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1. Algal treatment of wastewater generated during oil and gas production using hydraulic fracturing technology

Author:
Giovanni Antonio Lutzu; Nurhan Turgut Dunford
Source:
Environmental technology 2019 v.40 no.8 pp. 1027-1034
ISSN:
1479-487X
Subject:
Chlorophyta; Cyanobacteria; biobased products; biomass; boron; carbon; chemical composition; environmental impact; environmental technology; hydraulic fracturing; microalgae; natural gas; nitrates; oils; wastewater; wastewater treatment
Abstract:
... Hydraulic fracturing technology is widely used for recovering natural gas and oil from tight oil and gas reserves. Large volumes of wastewater, flowback water, are produced during the fracturing process. This study examines algal treatment of flowback water. Thirteen microalgae strains consisting of cyanobacteria and green algae were examined. Wastewater quality before and after algae treatment, a ...
DOI:
10.1080/09593330.2017.1415983

2. Amendments fail to hasten biocrust recovery or soil stability at a disturbed dryland sandy site

Author:
David G. Chandler; Natalie Day; Matthew D. Madsen; Jayne Belnap
Source:
Restoration ecology 2019 v.27 no.2 pp. 289-297
ISSN:
1061-2971
Subject:
Bryophyta; Chlorophyta; Cyanobacteria; aggregate stability; arid lands; biological soil crusts; biomass; ecological function; fungi; gels; gypsum; hydraulic conductivity; inoculum; lichens; nutrients; oils; polyacrylamide; sodium chloride; soil aggregates; soil amendments; soil strength
Abstract:
... In most drylands, biological soil crusts (biocrusts), an assemblage of lichens, bryophytes, fungi, green algae, and cyanobacteria, are critical to healthy ecosystem function. However, they are extremely sensitive to disturbance and attempts to facilitate their recovery have had variable success. In this study, we applied soil amendments designed to improve soil surface stability and accelerate bio ...
DOI:
10.1111/rec.12870

3. Approach deliberation for source identification of sedimentary organic matters via comparing freshwater lakes with multi-ecotypes

Author:
Xiaoguang Xu; Wei Li; Hui Deng; Megumu Fujibayashi; Munehiro Nomura; Osamu Nishimura; Guoxiang Wang
Source:
Science of the total environment 2019 v.649 pp. 327-334
ISSN:
0048-9697
Subject:
Bacillariophyceae; Chlorophyta; Cyanobacteria; Miozoa; Nelumbo; Nymphoides; Phragmites; Trapa; bacteria; biomarkers; ecotypes; eutrophication; fatty acid composition; fatty acids; freshwater ecosystems; freshwater lakes; microalgae; organic matter; plants (botany); sediments; stable isotopes; statistical models; China; Japan
Abstract:
... Despite of the importance of understanding the sediment quality for lacustrine management, the source evaluation of sedimentary organic matter (SOM) in freshwater lakes is still insufficient. In this study, two shallow eutrophic lakes of Lake Taihu, China and Lake Izunuma, Japan were systematically investigated. Results of fatty acid profiles demonstrated that a wide range of organic matters, vary ...
DOI:
10.1016/j.scitotenv.2018.08.236

4. Assessing aquatic ecosystem health through the analysis of plankton biodiversity

Author:
N. F. Shao; S. T. Yang; Y. Sun; Y. Gai; C. S. Zhao; F. Wang; X. Yin; B. Dong
Source:
Marine & freshwater research 2019 v.70 no.5 pp. 647-655
ISSN:
1323-1650
Subject:
Bacillariophyceae; Chlorophyta; Cladocera; Cyanobacteria; Protozoa; Rotifera; anthropogenic activities; autumn; biodiversity; cities; developing countries; ecological restoration; environmental health; food webs; freshwater; freshwater ecosystems; health effects assessments; health status; models; monitoring; phytoplankton; rivers; spring; summer; zooplankton; China
Abstract:
... Healthy plankton communities are the foundation of many freshwater food webs. Their biodiversity is often used to directly reflect the health of the rivers. Globally, river ecosystem restoration is a critical issue and many freshwater ecosystems, especially in cities, are degraded because of intensive human activities. This is true for Jinan, China’s first pilot city for the Water Ecological Civil ...
DOI:
10.1071/MF18342

5. Bacterial and microeukaryotic plankton communities in a semi-intensive aquaculture system of sea bass (Dicentrarchus labrax): A seasonal survey

Author:
Letícia N. Duarte; Francisco J.R.C. Coelho; Daniel F.R. Cleary; Daniel Bonifácio; Patrícia Martins; Newton C.M. Gomes
Source:
Aquaculture 2019 v.503 pp. 59-69
ISSN:
0044-8486
Subject:
Chlorophyta; Ciliophora; Dicentrarchus labrax; Ochrophyta; Sparus aurata; alpha-Proteobacteria; aquaculture systems; bacteria; bacterioplankton; bass; community structure; fish production; gamma-Proteobacteria; microbial communities; salinity; surveys; temperature
Abstract:
... The importance of microbial diversity and their role in the maintenance of fish health in aquaculture systems has been increasingly recognized in recent years. However, there is still a major knowledge gap regarding the ecology, composition and dynamics of microbial plankton assemblages during fish production. In this study, we aimed to investigate the seasonal dynamics and potential interactions ...
DOI:
10.1016/j.aquaculture.2018.12.066

6. Bacterial communities protect the alga Microchloropsis salina from grazing by the rotifer Brachionus plicatilis

Author:
Carolyn L. Fisher; Christopher S. Ward; Pamela D. Lane; Jeffrey A. Kimbrel; Kenneth L. Sale; Rhona K. Stuart; Xavier Mayali; Todd W. Lane
Source:
Algal research 2019 v.40 pp. 101500
ISSN:
2211-9264
Subject:
Brachionus plicatilis; Chlorophyta; Marinobacter; Methylophaga; Nannochloropsis salina; Pseudomonas; Rhodobacteraceae; algae culture; bacterial communities; biomass production; biotechnology; business enterprises; coculture; entrepreneurship; farmers; genes; grazing; microalgae; ponds; ribosomal RNA; risk reduction
Abstract:
... Open algal ponds are likely to succumb to unpredictable, devastating crashes by one or several deleterious species. Developing methodology to mitigate or prevent pond crashes will increase algal biomass production, drive down costs for algae farmers, and reduce the risk involved with algae cultivation, making it more favorable for investment by entrepreneurs and biotechnology companies. Here, we s ...
DOI:
10.1016/j.algal.2019.101500

7. Bacterioplankton community in response to biological filters (clam, biofilm, and macrophytes) in an integrated aquaculture wastewater bioremediation system

Author:
Betina Lukwambe; Li Zhao; Regan Nicholaus; Wen Yang; Jinyong Zhu; Zhongming Zheng
Source:
Environmental pollution 2019 v.254 pp. 113035
ISSN:
0269-7491
Subject:
Bacillales; Chlorophyta; Rhodobacteraceae; Spartina anglica; Tegillarca granosa; ammonification; aquaculture systems; bacterioplankton; biodegradability; biodegradation; biofilm; biofilters; biomarkers; biomass; biotic factors; chlorophyll; clams; denitrification; dissolved oxygen; ecological function; effluents; environmental factors; macrophytes; microorganisms; nitrate nitrogen; nitrates; nitrification; oxygen; particulate organic matter; phytoaccumulation; pollution load; total nitrogen; total phosphorus; wastewater; wastewater treatment; water temperature
Abstract:
... Integrated systems with appropriate bio-filters can be used to treat aquaculture effluents. However, the information on bio-filters that alters the ecological functions of the bacterioplankton community (BC) in biodegradation of the aquaculture effluents remains controversial. In this study, we implemented a comprehensive restoration technology combined with bio-filters [biofilm, clam (Tegillarca ...
DOI:
10.1016/j.envpol.2019.113035

8. Balancing protection and efficiency in the regulation of photosynthetic electron transport across plant evolution

Author:
Alessandro Alboresi; Mattia Storti; Tomas Morosinotto
Source:
new phytologist 2019 v.221 no.1 pp. 105-109
ISSN:
0028-646X
Subject:
Angiospermae; Chlorophyta; Cyanobacteria; autotrophs; electrons; eukaryotic cells; evolution; light intensity; mosses and liverworts; oxygen; photosynthetic electron transport; photosystem I; proteins
Abstract:
... Contents Summary 105 I. Introduction 105 II. Diversity of molecular mechanisms for regulation of photosynthetic electron transport 106 III. Role of FLVs in the regulation of photosynthesis in eukaryotes 107 IV. Why were FLVs lost in angiosperms? 108 V. Conclusions 108 Acknowledgements 109 References 109 SUMMARY: Photosynthetic electron transport requires continuous modulation to maintain the balan ...
DOI:
10.1111/nph.15372

9. Biodegradation of diuron by endophytic Bacillus licheniformis strain SDS12 and its application in reducing diuron toxicity for green algae

Author:
Anil Kumar Singh; Poonam Singla
Source:
Environmental science and pollution research 2019 v.26 no.26 pp. 26972-26981
ISSN:
0944-1344
Subject:
Bacillus licheniformis; Chlorophyta; Parthenium; algae; bacteria; biodegradation; chlorophyll; diuron; endophytes; host plants; photosynthesis; plant growth; soil; toxicity; weeds
Abstract:
... The endophytic bacteria live in close nuptial relationship with the host plant. The stress experienced by the plant is expected to be transferred to the endophytes. Thus, plants thriving at polluted sites are likely to harbor pollutant-degrading endophytes. The present study reports the isolation of phenylurea herbicides assimilating Bacillus sps. from Parthenium weed growing at diuron-contaminate ...
DOI:
10.1007/s11356-019-05922-4

10. Care and propagation of captive pupfish from the genus Cyprinodon: insight into conservation

Author:
George C. Burg; Jaimie Johnson; Savannah Spataro; Amelia O’Keefe; Natasha Urbina; Georgina Puentedura; Matt Heuton; Sean Harris; Stanley D. Hillyard; Frank van Breukelen
Source:
Environmental biology of fishes 2019 v.102 no.8 pp. 1015-1024
ISSN:
0378-1909
Subject:
Chlorophyta; Cyanobacteria; Cyprinodon diabolis; Cyprinodon nevadensis; algae; aquarium plants; breeding; cannibalism; climate change; eggs; fish; habitats; larvae; reproductive performance; survival rate; temperature
Abstract:
... We have maintained pupfish derived from a refuge population of the critically endangered Devils Hole pupfish (Cyprinodon diabolis) and the closely related and endangered Ash Meadows pupfish (C. nevadensis mionectes) in our laboratory for 9 years at the ecologically relevant temperatures of 28 and 33 °C. We asked if insights gained by our captive husbandry could inform on what pressures may be impa ...
DOI:
10.1007/s10641-019-00887-2

11. Chloroviruses

Author:
James L. Van Etten; Irina V. Agarkova; David D. Dunigan
Source:
Viruses 2019 v.12 no.1 pp. -
ISSN:
1999-4915
Subject:
Animalia; Chlorophyta; DNA; algae; biosynthesis; capsid; chitin; endosymbionts; enzymes; genes; glycoproteins; hyaluronic acid; ion channels; pathogenicity; polyamines; protists; transfer RNA; viral proteins; viruses
Abstract:
... Chloroviruses are large dsDNA, plaque-forming viruses that infect certain chlorella-like green algae; the algae are normally mutualistic endosymbionts of protists and metazoans and are often referred to as zoochlorellae. The viruses are ubiquitous in inland aqueous environments throughout the world and occasionally single types reach titers of thousands of plaque-forming units per ml of native wat ...
DOI:
10.3390/v12010020

12. Co-pyrolysis behavior of microalgae biomass and low-rank coal: Kinetic analysis of the main volatile products

Author:
Zhiqiang Wu; Yaowu Li; Bo Zhang; Wangcai Yang; Bolun Yang
Source:
Bioresource technology 2019 v.271 pp. 202-209
ISSN:
0960-8524
Subject:
Chlorophyta; activation energy; benzene; biomass; carbon dioxide; carbon monoxide; coal; hydrogen; kinetics; methane; microalgae; mixing; pyrolysis; synergism
Abstract:
... This work studied the kinetic characteristics of volatile products from co-pyrolysis of microalgae and low-rank coal. Iso-conversional method was applied to calculate the reaction order, activation energy and pre-exponential factor of gaseous products (H2, CO, CH4, and CO2) and benzene. The results indicated the activation energy of H2 generating from both individual and mixing samples was the hig ...
DOI:
10.1016/j.biortech.2018.09.076

13. Combined effects of elevated carbon dioxide and temperature on phytoplankton-zooplankton link: A multi-influence of climate change on freshwater planktonic communities

Author:
Wei Li; Xiaoguang Xu; Jingmei Yao; Nobuyuki Tanaka; Osamu Nishimura; Hua Ma
Source:
Science of the total environment 2019 v.658 pp. 1175-1185
ISSN:
0048-9697
Subject:
Bacillariophyceae; Chlorophyta; Cyanobacteria; Daphnia magna; algae; algae culture; biomass; carbon; carbon dioxide; carbon dioxide enrichment; climate change; fatty acid composition; freshwater; freshwater ecosystems; phosphorus; phytoplankton; polyunsaturated fatty acids; temperature; zooplankton
Abstract:
... It is essential to understand the combined effects of elevated CO₂ and temperature on phytoplankton-zooplankton link when attempting to predict climate change responses of freshwater ecosystems. Phytoplankton species differ in stoichiometric and fatty acids composition, and this may result in phytoplankton-mediated effect on zooplankton at elevated CO₂ and temperature. Beyond the isolated analysis ...
DOI:
10.1016/j.scitotenv.2018.12.180

14. Community Structures of Bacteria, Archaea, and Eukaryotic Microbes in the Freshwater Glacier Lake Yukidori-Ike in Langhovde, East Antarctica

Author:
Aoi Chaya; Norio Kurosawa; Akinori Kawamata; Makiko Kosugi; Satoshi Imura
Source:
Diversity 2019 v.11 no.7 pp. -
ISSN:
1424-2818
Subject:
Archaea; Bacillariophyta; Bacteroidetes; Chlorophyta; Ciliophora; Cyanobacteria; DNA; Firmicutes; bacteria; beta-Proteobacteria; biodiversity; clones; community structure; freshwater; glaciers; methanogens; microbial communities; ribosomal RNA; salinity; salt lakes; temperate zones; temperature; Antarctic region; Antarctica
Abstract:
... Since most studies about community structures of microorganisms in Antarctic terrestrial lakes using molecular biological tools are mainly focused on bacteria, limited information is available about archaeal and eukaryotic microbial diversity. In this study, the biodiversity of microorganisms belonging to all three domains in a typical Antarctic freshwater glacier lake (Yukidori-Ike) was revealed ...
DOI:
10.3390/d11070105

15. Comparative analysis of prebiotic effects of seaweed polysaccharides laminaran, porphyran, and ulvan using in vitro human fecal fermentation

Author:
Hyunbin Seong; Jae-Han Bae; Ji Sun Seo; Seul-Ah Kim; Tae-Jip Kim; Nam Soo Han
Source:
Journal of functional foods 2019 v.57 pp. 408-416
ISSN:
1756-4646
Subject:
Bacteroides; Bifidobacterium; Chlorophyta; Lactobacillus; acetates; bacteria; colon; fermentation; fructooligosaccharides; humans; in vitro studies; lactic acid; macroalgae; polysaccharides; prebiotics; propionic acid; short chain fatty acids
Abstract:
... Laminaran, porphyran, and ulvan are major seaweed polysaccharides in brown, red, and green algae, respectively. We compared their prebiotic effects using individual microbial fermentability test and in vitro fecal fermentation. The fermentability test showed that these polysaccharides were selectively utilized by Bifidobacteria, Lactobacilli, and Bacteroides (ΔOD580 nm, 0.2–1.0), while no growth o ...
DOI:
10.1016/j.jff.2019.04.014

16. Comparison of fluorometric and microscopical quantification of phytoplankton in a drinking water reservoir by a one-season monitoring program

Author:
A. Hartmann; H. Horn; I. Röske; K. Röske
Source:
Aquatic sciences 2019 v.81 no.1 pp. 19
ISSN:
1015-1621
Subject:
Bacillariophyceae; Chlorophyta; Cryptista; Microcystis; aquatic ecosystems; chlorophyll; drinking water; fluorescence; fluorometry; labor; microscopy; monitoring; phytoplankton; species diversity; surveys; water reservoirs
Abstract:
... Phytoplankton are key components in aquatic ecosystems and therefore an important target of monitoring analyses. Microscopical counting, although providing most detailed results, is time and labor intensive and requires highly skilled analysts. In situ spectral fluorescence measurements provide a much faster analysis with a higher spatiotemporal resolution. A one-season survey of phytoplankton ass ...
DOI:
10.1007/s00027-018-0608-x

17. Concentrations of various elements in seaweed and seawater from Shen'ao Bay, Nan'ao Island, Guangdong coast, China: Environmental monitoring and the bioremediation potential of the seaweed

Author:
Xian Sun; Zhiwei Liu; Qichen Jiang; Yufeng Yang
Source:
Science of the total environment 2019 v.659 pp. 632-639
ISSN:
0048-9697
Subject:
Chlorophyta; Phaeophyceae; Rhodophyta; bioaccumulation factor; bioremediation; cadmium; calcium; chromium; coasts; copper; environmental monitoring; indicator species; iron; lead; macroalgae; magnesium; manganese; nickel; seawater; selenium; sodium; zinc; China
Abstract:
... Seaweeds take up elements directly from seawater and have been widely employed in coastal field studies of trace element contamination. In our study, the contents of the elements, K, P, Ca, Mg, Na, Fe, Mn, Zn, Cu, B, Cd, Cr, Ni, Pb and Se, were determined from eight dominant seaweeds and the seawater from Shen'ao bay, Nan'ao Island. The levels of Cr, Ni, Mn, Zn, Cd and Pb in the seaweeds showed si ...
DOI:
10.1016/j.scitotenv.2018.12.364

18. Correlation between antibiotic-induced feeding depression and body size reduction in zooplankton (rotifer, Brachionus calyciflorus): Neural response and digestive enzyme inhibition

Author:
Zhengyu Yan; Qiulian Yang; Xiao Wang; Oscar Lopez Torres; Shengkai Tang; Shenghu Zhang; Ruixin Guo; Jianqiu Chen
Source:
Chemosphere 2019 v.218 pp. 376-383
ISSN:
0045-6535
Subject:
Brachionus calyciflorus; Chlorophyta; acetylcholinesterase; amylases; antibiotics; body size; digestive enzymes; enzyme activity; enzyme inhibition; exposure duration; feeding behavior; filtration; ingestion; neurophysiology; physiological response; reactive oxygen species; statistical analysis; sulfamethazine; toxicity; zooplankton
Abstract:
... The study analyzed the correlation between the antibiotic-induced feeding depression and body size reduction in rotifer, Brachionus calyciflorus, involving exposure, post-exposure and re-exposure periods. The filtration and ingestion rates of the rotifers were inhibited in these three exposure periods at any given concentration of the antibiotic sulfamethazine (SMZ). As food for rotifer, the cell ...
DOI:
10.1016/j.chemosphere.2018.11.067

19. Cytochrome c6 is the main respiratory and photosynthetic soluble electron donor in heterocysts of the cyanobacterium Anabaena sp. PCC 7120

Author:
Alejandro Torrado; Carmen Ramírez-Moncayo; José A. Navarro; Vicente Mariscal; Fernando P. Molina-Heredia
Source:
Biochimica et biophysica acta 2019 v.1860 no.1 pp. 60-68
ISSN:
0005-2728
Subject:
Anabaena; Chlorophyta; copper; cytochrome c; enzymes; mutants; nitrogen; photosystem I; plastocyanin; vegetative cells
Abstract:
... Cytochrome c6 is a soluble electron carrier, present in all known cyanobacteria, that has been replaced by plastocyanin in plants. Despite their high structural differences, both proteins have been reported to be isofunctional in cyanobacteria and green algae, acting as alternative electron carriers from the cytochrome b6-f complex to photosystem I or terminal oxidases. We have investigated the su ...
DOI:
10.1016/j.bbabio.2018.11.009

20. Detoxification of wastewater containing pharmaceuticals using horizontal flow bioelectrochemical filter

Author:
Álvaro Pun; Karina Boltes; Pedro Letón; Abraham Esteve-Nuñez
Source:
Bioresource technology reports 2019 v.7 pp. 100296
ISSN:
2589-014X
Subject:
Chlorophyta; algae; ammonium nitrogen; biofilters; carbon; drugs; ecotoxicology; effluents; organic matter; wastewater
Abstract:
... Removal of a mixture of 13 pharmaceutical compounds was investigated in this work in a horizontal subsurface flow electroconductive filter. Biofilter was constructed using electroconductive carbon with capacity for allowing the electron flow between microbial communities at different redox environments; under a configuration called snorkel. Stable operation was observed during 200days, with medium ...
DOI:
10.1016/j.biteb.2019.100296

21. Diatom genes originating from red and green algae: Implications for the secondary endosymbiosis models

Author:
A.A. Morozov; Yuri P. Galachyants
Source:
Marine genomics 2019 v.45 pp. 72-78
ISSN:
1874-7787
Subject:
Bacillariophyceae; Chlorophyta; algae; ancestry; data collection; endosymbionts; genes; models; photosynthesis; proteome; symbiosis
Abstract:
... Previous phylogenomic analyses of diatoms have discovered some plastid-targeted genes apparently coming from green algae. Number of these genes varied from less than a half of EGT-compatible genes to an overwhelming majority, and their presence was treated as an evidence of cryptic green plastid. We have performed such an analysis with a novel weighted approach on an extended dataset of diatom gen ...
DOI:
10.1016/j.margen.2019.02.003

22. Distribution of epipelic algae and related environmental nutrients in Taihu Lake, revealed by HPLC analysis

Author:
Yuzhi Song; Yan Xue; Yongxia Gao; Yan Jin
Source:
Marine & freshwater research 2019 v.70 no.6 pp. 849-856
ISSN:
1323-1650
Subject:
Bacillariophyceae; Chlorophyta; Cyanobacteria; algae; biomass; chlorophyll; environmental factors; epiphytes; eutrophication; freshwater lakes; high performance liquid chromatography; nutrients; sediments; total nitrogen; total phosphorus; zeaxanthin; China
Abstract:
... Epipelic algal biomass and composition (determined by HPLC pigment analysis) and related environmental nutrients were investigated in a phytoplankton-dominated area (Meiliang Bay), a macrophyte-dominated area (East Taihu Lake) and a transition zones (Gonghu Bay) in a shallow eutrophic freshwater lake (Taihu Lake, eastern China). Surface sediment samples were collected at 11 sampling sites in April ...
DOI:
10.1071/MF17318

23. Diversity and annual variation of phytoplankton community in Yesso scallop (Patinopecten yessoensis) farming waters of North Yellow Sea of China

Author:
Zichao Yu; Chao Liu; Feifei Wang; Zhuang Xue; Anguo Zhang; Guangxia Lu; Lingling Wang; Linsheng Song
Source:
Aquaculture 2019 pp. 734266
ISSN:
0044-8486
Subject:
Bacillariophyceae; Chlorophyta; Chrysophyceae; Dinophyceae; Mizuhopecten yessoensis; Noctilucales; algae; community structure; dissolved oxygen; energy; farming systems; grazing intensity; high-throughput nucleotide sequencing; mollusc culture; mortality; phytoplankton; ribosomal DNA; scallops; seawater; silicates; summer; temperature; China; Japan; Yellow Sea
Abstract:
... Yesso scallop (Patinopecten yessoensis) is one of the most important maricultured scallops in northern China, which was first introduced from Japan in 1980s. However, with the rapid development of aquaculture, the frequent occurrence of Yesso scallop's high mortality in summer has led to huge production losses. In the present study, seawater samples were collected from Yesso scallop farming waters ...
DOI:
10.1016/j.aquaculture.2019.734266

24. Dynamics of Species and Size Structures of Phytoplankton at Different Levels of Bottom-Up and Top-Down Effects in Experimental Conditions

Author:
E. G. Sakharova; I. Yu. Feniova; Z. I. Gorelysheva; M. Rzepecki; I. Kostshevska-Shlakovska; A. V. Krylov; N. S. Zilitinkevicz
Source:
Contemporary problems of ecology 2019 v.12 no.3 pp. 245-253
ISSN:
1995-4255
Subject:
Bacillariophyceae; Chlorophyta; Cyanobacteria; Miozoa; algae; eutrophication; fish; phytoplankton; zooplankton
Abstract:
... An experimental study of the impacts of trophic conditions and the activity of zooplankton and fish on the phytoplankton structure has shown that, at the beginning of the experiment, the species and size structures of algae were dependent on the N : P ratio. This parameter causes the differences in phytoplankton structures between mesotrophic and eutrophic conditions so that, in mesotrophic condit ...
DOI:
10.1134/S1995425519030119

25. Ecosystem history of a tropical reservoir revealed by metals, nutrients and photosynthetic pigments preserved in sediments

Author:
Juliana de Oliveira Soares Silva Mizael; Sheila Cardoso-Silva; Daniele Frascareli; Marcelo Luiz Martins Pompêo; Viviane Moschini-Carlos
Source:
Catena 2019 pp. -
ISSN:
0341-8162
Subject:
Chlorophyta; Cyanobacteria; aluminum; beta-carotene; chlorophyll; chromium; copper; dams (hydrology); ecosystems; eutrophication; iron; land use; lead; lutein; manganese; nickel; nutrients; organic matter; photosynthesis; principal component analysis; sand; sedimentation rate; surface water; total nitrogen; total phosphorus; trophic levels; watersheds; zeaxanthin; zinc; Brazil
Abstract:
... Many studies have found evidence of processes of eutrophication and contamination by metals in reservoirs worldwide. The present work discusses the history of changes associated with anthropic impacts in a tropical reservoir (São Paulo, Brazil), using the analysis of metals, nutrients, and pigments in sediment cores. Three cores were obtained in the dam area of the reservoir. One was used for dete ...
DOI:
10.1016/j.catena.2019.104242

26. Evaluating the enantiospecific differences of non-steroidal anti-inflammatory drugs (NSAIDs) using an ecotoxicity bioassay test battery

Author:
Peta A. Neale; Amos Branch; Stuart J. Khan; Frederic D.L. Leusch
Source:
Science of the total environment 2019 v.694 pp. 133659
ISSN:
0048-9697
Subject:
Chlorophyta; algae; aquatic environment; bacteria; bioassays; ecotoxicology; enantiomers; environmental assessment; enzymes; fish; ibuprofen; ketoprofen; median effective concentration; nontarget organisms; photosystem II; risk; risk assessment; toxicity; wastewater treatment
Abstract:
... Wastewater treatment plants are a major pathway for pharmaceuticals to the aquatic environment. Many pharmaceuticals, including non-steroidal anti-inflammatory drugs (NSAIDs), are chiral chemicals and the biological activity of their enantiomers can differ. Few studies have assessed the effects of different NSAID enantiomers on non-target organisms. However, this information is important for envir ...
DOI:
10.1016/j.scitotenv.2019.133659

27. An Evaluation of the Nutritional Composition of Seaweeds as Potential Source of Food and Feed

Author:
Megha Barot; J. I. Nirmal Kumar; Rita N. Kumar
Source:
National Academy science letters 2019 v.42 no.6 pp. 459-464
ISSN:
0250-541X
Subject:
Chlorophyta; Phaeophyceae; Rhodophyta; ash content; calcium; carbohydrate content; coasts; free amino acids; lipids; mineral content; nutrient content; potassium; India
Abstract:
... A systematic investigation was carried out to assess the nutritional composition of 18 different seaweeds belonging to Chlorophyta, Rhodophyta and Phaeophyta collected from Okha coast of Gujarat, India. The results showed that the carbohydrate content ranged from 0.50 ± 0.01 to 34.89 ± 0.02%, protein from 0.429 ± 0.7 to 20.2 ± 0.1%, lipid from 1.0 ± 0.05 to 4.8 ± 0.2% and ash content was in the ra ...
DOI:
10.1007/s40009-019-0783-x

28. External carbon addition for enhancing denitrification modifies bacterial community composition and affects CH4 and N2O production in sub-arctic mining pond sediments

Author:
Maria Hellman; Germán Bonilla-Rosso; Anders Widerlund; Jaanis Juhanson; Sara Hallin
Source:
Water research 2019 v.158 pp. 22-33
ISSN:
0043-1354
Subject:
Bacteroidia; Chlorophyta; acetates; algae; ammonium; anaerobic ammonium oxidation; bacteria; bacterial communities; carbon; cellulose; community structure; denitrification; denitrifying microorganisms; explosives; fermenters; genes; greenhouse gas emissions; methane; mine tailings; mining; nitrate reduction; nitrates; nitrogen; nitrous oxide; nitrous oxide production; ponds; sediments; sulfates
Abstract:
... Explosives used in mining operations release reactive nitrogen (N) that discharge into surrounding waters. Existing pond systems at mine sites could be used for N removal through denitrification and we investigated capacity in tailings and clarification pond sediments at an iron-ore mine site. Despite differences in microbial community structure in the two ponds, the potential denitrification rate ...
DOI:
10.1016/j.watres.2019.04.007

29. Fatty acid profile and energy efficiency of biodiesel production from an alkaliphilic algae grown in the photobioreactor

Author:
Raja Chowdhury; Patricia L. Keen; Wendong Tao
Source:
Bioresource technology reports 2019 v.6 pp. 229-236
ISSN:
2589-014X
Subject:
Chlorophyta; algae; biodiesel; biomass production; cis-trans isomers; drying; energy efficiency; eukaryotic cells; fatty acid composition; fuel production; heat; photobioreactors; specific growth rate; transesterification
Abstract:
... In order to gain insight into biodiesel production, suitability of an alkaliphilic green algae (Chlorellla vulgaris) was evaluated experimentally and by conducting an energy analysis. Biomass productivity was 28–31 mg-L−1- d−1 and lipid production reached the maximum of 38% of the algal biomass. At a low light intensity (60–90 μmol/m2/s), the specific growth rate showed a cyclic behavior. At a hig ...
DOI:
10.1016/j.biteb.2019.03.010

30. Genome-wide analysis reveals the evolution and structural features of WRINKLED1 in plants

Author:
Tong Tang; Chang Du; Huan Song; Usman Aziz; Lili Wang; Cuizhu Zhao; Meng Zhang
Source:
Molecular genetics and genomics 2019 v.294 no.2 pp. 329-341
ISSN:
1617-4615
Subject:
Angiospermae; Chlorophyta; DNA-binding domains; acidity; alkalinity; biosynthesis; exons; fatty acids; genome-wide association study; messenger RNA; non-vascular plants; oils; phosphorylation; phylogeny; transcription factors; transcriptional activation; vascular plants
Abstract:
... WRINKLED1 (WRI1), an AP2/ERE transcription factor, is one of the most important regulators of oil accumulation. It has been extensively studied in angiosperms, but its evolution and overview features in plants remain unknown. In this study, WRI1s, as well as WRI1-likes in non-WRI1 species, were investigated in 64 genome-sequenced plants. Their origin, distribution, duplication, evolution, function ...
DOI:
10.1007/s00438-018-1512-8

31. Green algal molecular responses to temperature stress

Author:
B. Barati; S.-Y. Gan; P.-E. Lim; J. Beardall; S.-M. Phang
Source:
Acta physiologiae plantarum 2019 v.41 no.2 pp. 26
ISSN:
0137-5881
Subject:
Chlorophyta; acclimation; algae; aquatic ecosystems; carbohydrates; carbon; cell death; energy; enzymes; fatty acid composition; fuel production; genes; genetic improvement; global warming; heat stress; membrane fluidity; models; molecular chaperones; photosynthesis; solutes; temperature; ubiquitin; wastewater treatment
Abstract:
... Global warming is a critical issue and has great impact on all living organisms, including algae. Generally, algae play significant roles in aquatic ecosystems and employ diverse strategies to survive under abiotic stress. For example, heat stress affects membrane fluidity, and algae, in response, can modify their membrane fatty acid composition to maintain homoeostasis. Moreover, they protect the ...
DOI:
10.1007/s11738-019-2813-1

32. Habitat preferences of Micrasterias arcuata (Desmidiales, Viridiplantae) in wetlands from central Brazil: an allometric study

Author:
Bárbara Medeiros Fonseca; Lidia Mendes Feijó; Jiří Neustupa
Source:
Hydrobiologia 2019 v.842 no.1 pp. 143-156
ISSN:
0018-8158
Subject:
Chlorophyta; Micrasterias; allometry; cell structures; data collection; environmental factors; grasslands; habitat preferences; habitats; models; morphs; periphyton; ponds; wetlands; Brazil
Abstract:
... The green alga Micrasterias arcuata is commonly found in the periphyton of slightly acidic ponds and wet grasslands of central Brazil. We used M. arcuata complex as a model system for evaluation of the following questions: (a) Is there any relation between morphological characteristics of M. arcuata populations and ecological features of the sites? (b) Can the observed plasticity be explained by a ...
DOI:
10.1007/s10750-019-04032-z

33. Histologic Findings in Captive American Horseshoe Crabs (Limulus polyphemus)

Author:
Elise E. B. LaDouceur; Lisa Mangus; Michael M. Garner; Andrew N. Cartoceti
Source:
Veterinary pathology 2019 v.56 no.6 pp. 932-939
ISSN:
1544-2217
Subject:
Chlorophyta; Cyanobacteria; Fusarium; Limulus polyphemus; animal pathology; bacteria; biofilm; brain; chitin; coagulum; compound eyes; dermis; fungal culture; fungal morphology; fungi; gills; gonads; heart; hemocytes; hepatopancreas; histology; histopathology; inflammation; integument; nutritional status; pathogens; skeletal muscle
Abstract:
... Histopathology of 61 captive American horseshoe crabs (HSCs; Limulus polyphemus) is reviewed. HSC organs evaluated histologically included body wall (chitin, epidermis, dermis, and skeletal muscle), hepatopancreas, gut, gonads, book gills, eyes, heart, brain, and coxal gland. In descending order, lesions were most frequently identified in compound eye, body wall, book gills, hepatopancreas, chitin ...
DOI:
10.1177/0300985819859877

34. Hydroperoxides derived from marine sources: origin and biological activities

Author:
Vera A. Vil; Tatyana A. Gloriozova; Alexander O. Terent’ev; Nick Savidov; Valery M. Dembitsky
Source:
Applied microbiology and biotechnology 2019 v.103 no.4 pp. 1627-1642
ISSN:
0175-7598
Subject:
Chlorophyta; Plasmodium; algae; antiprotozoal properties; bacteria; corals; fungi; hydroperoxides; metabolites; molluscs
Abstract:
... Hydroperoxides are a small and interesting group of biologically active natural marine compounds. All these metabolites contain a group (R-O-O-H). In this mini-review, studies of more than 80 hydroperoxides isolated from bacteria, fungi, algae, and marine invertebrates are described. Hydroperoxides from the red, brown, and green algae exhibit high antineoplastic, anti-inflammatory, and antiprotozo ...
DOI:
10.1007/s00253-018-9560-x

35. Identification, classification, and evolution of putative xylosyltransferases from algae

Author:
Wentao Han; Xiao Fan; Linhong Teng; Michelle Joyce Slade Kaczurowski; Xiaowen Zhang; Dong Xu; Yanbin Yin; Naihao Ye
Source:
Protoplasma 2019 v.256 no.4 pp. 1119-1132
ISSN:
0033-183X
Subject:
Bacillariophyceae; Charophyta; Chlorophyta; Choanoflagellatea; Cryptista; Echinodermata; Eustigmatophyceae; Pelagophyceae; Phaeophyceae; Rhodophyta; algae; ancestry; biosynthesis; endosymbionts; fucoidan; fucose; genes; phylogeny; sequence analysis; transferases; xylan; xyloglucans; xylose
Abstract:
... Xylosyltransferases (XylTs) play key roles in the biosynthesis of many different polysaccharides. These enzymes transfer D-xylose from UDP-xylose to substrate acceptors. In this study, we identified 30 XylTs from primary endosymbionts (green algae, red algae, and glaucophytes) and secondary or higher endosymbionts (brown algae, diatoms, Eustigmatophyceae, Pelagophyceae, and Cryptophyta). We perfor ...
DOI:
10.1007/s00709-019-01358-2

36. Independent evolution of complex development in animals and plants: deep homology and lateral gene transfer

Author:
Aurora M. Nedelcu
Source:
Development genes and evolution 2019 v.229 no.1 pp. 25-34
ISSN:
0949-944X
Subject:
Animalia; Chlorophyta; DNA-binding domains; animals; cell proliferation; horizontal gene transfer; parallel evolution; phenotype
Abstract:
... The evolution of multicellularity is a premier example of phenotypic convergence: simple multicellularity evolved independently many times, and complex multicellular phenotypes are found in several distant groups. Furthermore, both animal and plant lineages have independently reached extreme levels of morphological, functional, and developmental complexity. This study explores the genetic basis fo ...
DOI:
10.1007/s00427-019-00626-8

37. Inventory and Historical Changes in the Marine Flora of Tomioka Peninsula (Amakusa Island), Japan

Author:
Eduard A. Titlyanov; Tamara V. Titlyanova; Mutsunori Tokeshi; Xiubao Li
Source:
Diversity 2019 v.11 no.9 pp. -
ISSN:
1424-2818
Subject:
Chlorophyta; Phaeophyceae; Rhodophyta; benthic organisms; flora; geographical distribution; global warming; inventories; latitude; macroalgae; species diversity; subtropics; tropics; water; East China Sea; Japan; South East Asia
Abstract:
... Intensive algal sampling was conducted from 2012 to 2017 in the Tomioka Peninsula, Amakusa-Shimoshima Island (the East China Sea, Japan), yielding a total of 293 benthic macroalgal taxa, of which 63% were red algae, 16% were brown algae, and 19% were green algae. The majority (69%) of species were previously recorded only for the tropics and/or subtropics, whereas 31% of species were recorded for ...
DOI:
10.3390/d11090158

38. Light-adaptive state transitions in the Ross Sea haptophyte Phaeocystis antarctica and in dinoflagellate cells hosting kleptoplasts derived from it

Author:
Kostas Stamatakis; Panayiotis-Ilias Broussos; Angeliki Panagiotopoulou; Rebecca J. Gast; Maria Pelecanou; George C. Papageorgiou
Source:
Biochimica et biophysica acta 2019 v.1860 no.1 pp. 102-110
ISSN:
0005-2728
Subject:
Bacillariophyceae; Chlorophyta; Cyanobacteria; Miozoa; Phaeocystis; Rhodophyta; absorption; algae; amino acids; autotrophs; chlorophyll; circular dichroism spectroscopy; fluorescence; kleptoplasts; photosynthesis; ultraviolet radiation; Antarctica
Abstract:
... Light state transitions (STs) is a reversible physiological process that oxygenic photosynthetic organisms use in order to minimize imbalances in the electronic excitation delivery to the reaction centers of Photosystems I and II, and thus to optimize photosynthesis. STs have been studied extensively in plants, green algae, red algae and cyanobacteria, but sparsely in algae with secondary red alga ...
DOI:
10.1016/j.bbabio.2018.11.016

39. Long‐term change of phytoplankton in Lake Kivu: The rise of the greens

Author:
Edouard Rugema; François Darchambeau; Hugo Sarmento; Maya Stoyneva‐Gärtner; Maria Leitao; Wim Thiery; Adrien Latli; Jean‐Pierre Descy
Source:
Freshwater biology 2019 v.64 no.11 pp. 1940-1955
ISSN:
0046-5070
Subject:
Bacillariophyceae; Chlorophyta; Cosmarium; Cyanobacteria; anthropogenic activities; biomass; chlorophyll; climate; community structure; euphotic zone; lakes; latitude; nitrogen; phosphorus; phytoplankton; seasonal variation; temperature profiles; time series analysis; Eastern Africa; Indian Ocean
Abstract:
... Phytoplankton time‐series enable the observation of recurrent seasonal patterns on community composition, but drastic shifts in community structure are rarely observed, unless linked to anthropogenic impacts (e.g. changes in nutrient inputs). Here, we report a unique case of non‐seasonal, multiannual regime shift of phytoplankton community structure in Lake Kivu, East Africa, and explore the possi ...
DOI:
10.1111/fwb.13383

40. Macroalgal resource use differences across age and size classes in the dominant temperate herbivorous fish Aplodactylus lophodon (Aplodactylidae)

Author:
B. A. Yiu; D. J. Booth; A. M. Fowler; D. A. Feary
Source:
Marine & freshwater research 2019 v.70 no.4 pp. 531-540
ISSN:
1323-1650
Subject:
Aplodactylus; Chlorophyta; Fucales; Rhodophyta; adults; biodiversity; diet; fish communities; foraging; forests; gastrointestinal system; herbivorous fish; juveniles; macroalgae; ontogeny; prediction; reefs; Australia
Abstract:
... Herbivorous fishes comprise a substantial proportion of temperate fish communities, although there is little understanding of their trophic resource use and whether this changes throughout post-settlement ontogeny. With increasing loss of macroalgal forests, understanding how temperate fishes use macroalgae will be vital in predicting future effects on temperate fish biodiversity. The Australian r ...
DOI:
10.1071/MF18086

41. Macrostructure of benthos along a salinity gradient: The case of Sivash Bay (the Sea of Azov), the largest hypersaline lagoon worldwide

Author:
Nickolai Shadrin; Elena Kolesnikova; Tatiana Revkova; Alexander Latushkin; Anna Chepyzhenko; Nikolay Dyakov; Elena Anufriieva
Source:
Journal of sea research 2019 v.154 pp. 101811
ISSN:
1385-1101
Subject:
Chironomidae; Chlorophyta; algae; benthic organisms; dissolved organic matter; ecosystems; hypersalinity; total suspended solids
Abstract:
... In 2018, total suspended solids (TSS) and dissolved organic matter (DOM) were studied as well as macrostructure of the macro- and meiobenthos (by sampling soft-sediments and algal mats) along a spatial salinity gradient from 30 to 88 g l−1 in Sivash Bay. The main goals of the study were to evaluate current ecosystem state, analyze long-term trends and verify the suggestions made previously. There ...
DOI:
10.1016/j.seares.2019.101811

42. Micro-elemental retention in rotifers and their trophic transfer to marine fish larvae: Influences of green algae enrichment

Author:
Jian Wang; Xugang Shu; Wen-Xiong Wang
Source:
Aquaculture 2019 v.499 pp. 374-380
ISSN:
0044-8486
Subject:
Chlorophyta; Rotifera; algae; cobalt; copper; digestive system; fish culture; fish larvae; iron; manganese; marine fish; nutrition; zinc
Abstract:
... Application of “green water” has been widely practiced in larval fish aquaculture, whereas their impacts on micro-elemental nutrition of rotifers and marine fish larvae have been seldom investigated. In the present study, we evaluated the impacts of “green water” and “clean water” on the micro-elemental changes and profiles in rotifers (both S- and L- types), and their subsequent impacts on marine ...
DOI:
10.1016/j.aquaculture.2018.09.066

43. Modulating the Effect of Iron and Total Organic Carbon on the Efficiency of a Hydrogen Peroxide-Based Algaecide for Suppressing Cyanobacteria

Author:
Elizabeth A. Crafton; Teresa J. Cutright; West M. Bishop; Donald W. Ott
Source:
Water, air, and soil pollution 2019 v.230 no.3 pp. 56
ISSN:
0049-6979
Subject:
Chlorophyta; Cyanobacteria; algae; algal blooms; environmental factors; iron; microcystins; sodium carbonate; total organic carbon
Abstract:
... The intensity and frequency of cyanobacteria-dominated harmful algal blooms (cHABs) has been increasing. A key issue associated with cHABs is the potential to release cyanotoxins, such as microcystin. One of the primary methods for addressing cHABs in a reservoir is the application of algaecides. This research evaluated the impact of common environmental factors (i.e., Fe, total organic carbon) on ...
DOI:
10.1007/s11270-019-4112-2

44. Multiple Applications of Enzymes Induced by Algal Biomasses from a New Bacillus Isolate to Saccharify Algae and Degrade Chemical Dyes

Author:
Yanwen Wu; Haipeng Guo; Jinchi Zhang; Xuantong Chen; Mingjiang Wu; Wensheng Qin
Source:
Waste and biomass valorization 2019 v.10 no.9 pp. 2517-2526
ISSN:
1877-2641
Subject:
Bacillus (bacteria); Chlorophyta; Sargassum fusiforme; algae; biomass; carbon; carboxymethylcellulose; decolorization; dyes; endo-1,4-beta-glucanase; enzyme activity; laccase; lignocellulases; pH; pulp and paper mills; reducing sugars; temperature; triazoles; wastewater; xylanases
Abstract:
... To find a multifunctional lignocellulolytic enzyme-producing strain, ten bacterial isolates from paper mill wastewater were tested for their carboxymethyl cellulose (CMC) hydrolytic ability. Bacillus sp. TPF-1, which exhibits the highest hydrolytic ability, was selected to produce lignocellulolytic enzymes using various biomass types as carbon sources. The highest CMCase (9.12 U/mL) and xylanase ( ...
DOI:
10.1007/s12649-018-0277-y

45. Network analysis to inform invasive species spread among lakes

Author:
Luis E. Escobar; Daniel Romero-Alvarez; Daniel J. Larkin; Nicholas B. D. Phelps
Source:
Journal of oceanology and limnology 2019 v.37 no.3 pp. 1037-1041
ISSN:
2096-5508
Subject:
Chlorophyta; algae; biodiversity; boats; data collection; ecosystems; humans; invasive species; lakes; risk; social networks; surveys; Canada; Great Lakes region; Minnesota
Abstract:
... Often facilitated by human-mediated pathways, aquatic invasive species are a threat to the health and biodiversity of global ecosystems. We present a novel approach incorporating survey data of watercraft movement in a social network analysis to reconstruct potential pathways of aquatic invasive species spread between lakes. As an example, we use the green alga Nitellopsis obtusa, also known as st ...
DOI:
10.1007/s00343-019-7208-z

46. Nitrogen-fixer enhances lipid yields in algal polycultures

Author:
Maria Stockenreiter; Elena Litchman
Source:
Algal research 2019 v.44 pp. 101676
ISSN:
2211-9264
Subject:
Chlorophyta; Cyanobacteria; algae culture; biomass production; functional diversity; lipids; microalgae; nitrogen; nitrogen-fixing cyanobacteria; nutrient requirements; species diversity
Abstract:
... Current algal biomass research still focuses mainly on identifying and growing monocultures that produce high amounts of lipids or other target compounds. However, monocultures might have a lower efficiency of utilizing resources, due to their limited physiological resource use possibilities, compared to algal polycultures. Recent studies showed that species diversity enhances the lipid production ...
DOI:
10.1016/j.algal.2019.101676

47. Nutritional and toxicity constraints of phytoplankton from a Brazilian reservoir to the fitness of cladoceran species

Author:
Aloysio da S. Ferrão-Filho; Tatiane M. Dias; Uanderson J. Pereira; José Augusto A. dos Santos; Betina Kozlowsky-Suzuki
Source:
Environmental science and pollution research international 2019 v.26 no.13 pp. 12881-12893
ISSN:
0944-1344
Subject:
Aulacoseira; Bacillariophyceae; Chlorophyta; Cladocera; Cylindrospermopsis raciborskii; clones; eutrophication; fecundity; life tables; neonates; phytoplankton; progeny; seston; survival rate; toxicity; Brazil
Abstract:
... Camorim is a small, eutrophic reservoir in Rio de Janeiro, Brazil, with a phytoplankton community dominated most of the year by the filamentous diatom Aulacoseira spp. and the toxic cyanobacterium Cylindrospermopsis raciborskii. As filamentous species can be a poor food for grazers, we hypothesize that phytoplankton from this reservoir would constrain cladoceran fitness due to nutritional limitati ...
DOI:
10.1007/s11356-019-04851-6

48. Optimizing turbidostatic microalgal biomass productivity: A combined experimental and coarse-grained modelling approach

Author:
T. Weise; J.M. Reinecke; S. Schuster; M. Pfaff
Source:
Algal research 2019 v.39 pp. 101439
ISSN:
2211-9264
Subject:
Chlorophyta; Nannochloropsis; biomass production; bioprocessing; light intensity; microalgae; model validation; models; photons; specific growth rate
Abstract:
... A combined, iterative experimental and model-based approach towards the optimization of microalgal biomass productivity has been conducted based on five long-term turbidostatic experiments using a strain of the unicellular green algae Nannochloropsis granulata. A coarse-grained model has been developed to describe and predict light-limited steady-state biomass productivity and dilution rate under ...
DOI:
10.1016/j.algal.2019.101439

49. Ozonation of pentabromophenol in aqueous basic medium: Kinetics, pathways, mechanism, dimerization and toxicity assessment

Author:
Afzal Ahmed Dar; Xinghao Wang; Siyuan Wang; Jiali Ge; Asam Shad; Fuxun Ai; Zunyao Wang
Source:
Chemosphere 2019 v.220 pp. 546-555
ISSN:
0045-6535
Subject:
Chlorophyta; Daphnia; acute toxicity; air; anions; bicarbonates; chlorides; dimerization; fish; humic acids; isomers; lethal concentration 50; median effective concentration; nitrates; ozonation; ozone; pH; phenolic compounds; phosphates; reaction kinetics; structure-activity relationships; sulfates
Abstract:
... Ozonation has been identified effective technique to degrade phenolic compounds, and production of intermediate dimers are major threat. In this study, we systematically investigated the degradation of Pentabromophenol (PBP) in an aqueous medium by using two different ozone generators (sources: air and water). We studied various factors that influenced the degradation kinetics of PBP, including th ...
DOI:
10.1016/j.chemosphere.2018.12.154

50. Phytoplankton as an Indicator of Ecological State of the Neva River Estuary for 2011–2015

Author:
V. N. Nikulina
Source:
Contemporary problems of ecology 2019 v.12 no.3 pp. 275-279
ISSN:
1995-4255
Subject:
Chlorophyta; algae; biomass; coasts; estuaries; eutrophication; phytoplankton; rivers; species diversity; summer; Gulf of Finland
Abstract:
... During the study period, the general pattern of distribution, species composition, and abundance of phytoplankton differed from those recorded previously. The greatest changes are observed in the central part of the northern coast of Neva Bay. As previously, the phytoplankton biomass is about 1 mg L⁻¹ in the Neva Bay near eastern station 7 on the northern coast, while it is 2–3 times higher than t ...
DOI:
10.1134/S1995425519030089

51. Phytoplankton communities in the crater lakes of western Uganda, and their indicator species in relation to lake trophic status

Author:
Angela Nankabirwa; Wannes De Crop; Thijs Van der Meeren; Christine Cocquyt; Pierre-Denis Plisnier; John Balirwa; Dirk Verschuren
Source:
Ecological indicators 2019 pp. 105563
ISSN:
1470-160X
Subject:
Bacillariophyceae; Chlorophyta; Microcystis aeruginosa; Miozoa; anthropogenic activities; biomass; chlorophyll; cluster analysis; ecosystem services; environmental indicators; eutrophication; freshwater; indicator species; lakes; land use; nutrient availability; nutrient content; phytoplankton; primary productivity; rural communities; seasonal variation; surveys; temperate zones; trophic levels; watersheds; wet season; Uganda
Abstract:
... The freshwater crater lakes of western Uganda represent an important natural resource for the region’s rural communities, but their capacity to provide drinking-quality water and other ecosystem services is being threatened by rapidly intensifying human activity within their catchments. This study investigated the relationship between the composition of pelagic phytoplankton communities in these l ...
DOI:
10.1016/j.ecolind.2019.105563

52. Phytoplankton community structure and diversity in the indoor industrial aquaculture system for Litopenaeus vannamei revealed by high‐throughput sequencing and morphological identification

Author:
Ling Qiao; Zhiqiang Chang; Jian Li; Zhao Chen; Ligan Yang; Qiang Luo
Source:
Aquaculture research 2019 v.50 no.9 pp. 2563-2576
ISSN:
1355-557X
Subject:
Bacillariophyceae; Chlorophyta; Cyclotella; Litopenaeus vannamei; Synechococcus; ammonium; community structure; environmental impact; eutrophication; high-throughput nucleotide sequencing; microscopy; nitrates; phytoplankton; shrimp; shrimp culture; toxicity
Abstract:
... The explosive multiplication of phytoplankton caused by water eutrophication often occur in the intensive shrimp aquaculture. To comprehensively assess the diversity and community structure of phytoplankton in the waters of typical indoor industrial aquaculture system for Litopenaeus vannamei, a combination of high‐throughput sequencing and morphological identification methods were used in the pre ...
DOI:
10.1111/are.14213

53. Phytoplankton community structure in relation to environmental factors and ecological assessment of water quality in the upper reaches of the Genhe River in the Greater Hinggan Mountains

Author:
Xiaoyu Li; Hongxian Yu; Huibo Wang; Chengxue Ma
Source:
Environmental science and pollution research 2019 v.26 no.17 pp. 17512-17519
ISSN:
0944-1344
Subject:
Bacillariophyta; Chlorophyta; Chrysophyceae; Cryptista; Cyanobacteria; autumn; biodiversity; biomass; cold; cold zones; community structure; copper; correspondence analysis; dominant species; environmental factors; iron; mountains; pH; phytoplankton; rivers; seasonal variation; spring; summer; surveys; water quality; water temperature
Abstract:
... Phytoplankton assemblages were investigated in 2015 along the seasonal changes of the Genhe River in the Greater Hinggan Mountains. The survey was performed in June (spring), August (summer), and October (autumn) at nine sampling stations to study the community composition, abundance, and biodiversity. The results showed that 61 species belonging to 16 genera were identified, including Bacillariop ...
DOI:
10.1007/s11356-019-05200-3

54. Phytoplankton response to climate changes and anthropogenic activities recorded by sedimentary pigments in a shallow eutrophied lake

Author:
Hanxiao Zhang; Shouliang Huo; Kevin M. Yeager; Zhuoshi He; Beidou Xi; Xiaochuang Li; Chunzi Ma; Fengchang Wu
Source:
Science of the total environment 2019 v.647 pp. 1398-1409
ISSN:
0048-9697
Subject:
Bacillariophyceae; Chlorophyta; Cyanobacteria; Miozoa; air temperature; algae; anthropogenic activities; chlorophyll; climate; climate change; lakes; models; phosphorus; phytoplankton; pigments; primary productivity; sediments; variance; China
Abstract:
... Studies that address the potential effects of climate and anthropogenic activities on lacustrine phytoplankton succession are scarce in the shallow lakes. In the present work, the succession of phytoplankton community inferred from sedimentary pigments has been investigated; the impacts of climate and anthropogenic activities on the succession have been evaluated by the generalized additive models ...
DOI:
10.1016/j.scitotenv.2018.08.081

55. Plant genome sequences: past, present, future

Author:
Paul Julian Kersey
Source:
Current opinion in plant biology 2019 v.48 pp. 1-8
ISSN:
1369-5266
Subject:
Chlorophyta; bioinformatics; crops; embryophytes; feeds; fuels; genome; medicine; nutrition; photosynthesis; primary productivity; sequence analysis; technology
Abstract:
... The green plants (Viridiplantae) are an essential kingdom of life, responsible via photosynthesis for the majority of global primary production, and directly utilized by humankind for nutrition, animal feed, fuel, clothing, medicine and other purposes. There are an estimated 391 000 species of land plants, in addition to 8000 species of green algae. Their genomes are unusually diverse compared to ...
DOI:
10.1016/j.pbi.2018.11.001

56. Proliferation of filamentous green algae along with submerged macrophytes planting, and the role of microbe

Author:
Weizhen Zhang; Li Wang; Liang Chen; Hong Shen; Jun Chen
Source:
Ecological engineering 2019 pp. -
ISSN:
0925-8574
Subject:
Chlorophyta; Gemmatimonadales; Nitrosomonadales; Potamogeton; Rhodobacterales; Vallisneria; algae; aquariums; bacteria; chlorophyll; epiphytes; grasses; lakes; leaves; macrophytes; microhabitats; photosynthesis; planting; remediation
Abstract:
... Excessive proliferation of filamentous green algae (FGA) is a problem that commonly occurs following the remediation of submerged macrophytes during lake restoration. Cultivation of submerged macrophytes changes the physical structure and micro-habitats for survival and growth of FGA. However, effects of submerged macrophytes on FGA and the mechanisms are largely unknown. In this study, artificial ...
DOI:
10.1016/j.ecoleng.2019.07.040

57. Reducing the Phytoplankton Biomass to Promote the Growth of Submerged Macrophytes by Introducing Artificial Aquatic Plants in Shallow Eutrophic Waters

Author:
Yue Wu; Licheng Huang; Yalin Wang; Lin Li; Genbao Li; Bangding Xiao; Lirong Song
Source:
Water 2019 v.11 no.7 pp. -
ISSN:
2073-4441
Subject:
Chlorophyta; Cyanobacteria; Elodea nuttallii; absorption; adsorption; algae; bacterial communities; biodiversity; biofilm; biomass; eutrophication; lakes; nutrient content; nutrients; periphyton; phosphorus; phytoplankton; submerged aquatic plants; total nitrogen; turbidity
Abstract:
... Harmful cyanobacterial blooms frequently occur in shallow eutrophic lakes and usually cause the decline of submerged vegetation. Therefore, artificial aquatic plants (AAPs) were introduced into enclosures in the eutrophic Dianchi Lake to investigate whether or not they could reduce cyanobacterial blooms and promote the growth of submerged macrophytes. On the 60th day after the AAPs were installed, ...
DOI:
10.3390/w11071370

58. Regulation of PSII function in Cyanothece sp. ATCC 51142 during a light–dark cycle

Author:
Cosmin Ionel Sicora; Iuliana Chiș; Ciprian Chiș; Oana Sicora
Source:
Photosynthesis research 2019 v.139 no.1-3 pp. 461-473
ISSN:
0166-8595
Subject:
Chlorophyta; Cyanothece; D1 protein; dissociation; enzyme activity; genes; nitrogen; nitrogenase; oxidation; photoperiod; photosystem II; protein synthesis
Abstract:
... Cyanobacteria, as well as green algae and higher plants, have highly conserved photosynthetic machinery. Cyanothece sp. ATCC 51142 is a unicellular, aerobic, diazotrophic cyanobacterium that fixes N₂ in the dark. In Cyanothece, the psbA gene family is composed of five members, encoding different isoforms of the D1 protein. A new D1 protein has been postulated in the literature, which blocks PSII d ...
DOI:
10.1007/s11120-018-0598-5

59. Relationship between seasonal variations of primary production, abiotic factors and phytoplankton composition in the coastal zone of the south-eastern part of the Baltic Sea

Author:
Elena Kudryavtseva; Sergey Aleksandrov; Tatiana Bukanova; Olga Dmitrieva; Igor Rusanov
Source:
Regional studies in marine science 2019 v.32 pp. 100862
ISSN:
2352-4855
Subject:
Bacillariophyceae; Chlorophyta; Cyanobacteria; Miozoa; ammonium nitrogen; biomass; coasts; environmental factors; eutrophication; latitude; nitrates; nutrients; organic matter; phosphates; photosynthesis; phytoplankton; primary productivity; runoff; seasonal variation; spring; summer; Baltic Sea
Abstract:
... Seasonal variations in marine primary production (PP) in the coastal zone of the south-eastern part of the Baltic Sea were studied between April 2008 and April 2009. The spring PP maximum was observed to be limited by the concentration of nitrates. Following a decrease in photosynthetic consumption of nutrients, an increase in ammoniacal nitrogen due to the decomposition of organic matter and conc ...
DOI:
10.1016/j.rsma.2019.100862

60. Remotely-Observed Early Spring Warming in the Southwestern Yellow Sea Due to Weakened Winter Monsoon

Author:
Xiangbai Wu; Qing Xu; Gen Li; Yuei-An Liou; Bin Wang; Huan Mei; Kai Tong
Source:
Remote Sensing 2019 v.11 no.21 pp. -
ISSN:
2072-4292
Subject:
Chlorophyta; advanced very high resolution radiometer; algal blooms; early development; estuaries; moderate resolution imaging spectroradiometer; monsoon season; remote sensing; satellites; seawater; spring; summer; surface water temperature; wind direction; winter; Taiwan; Yellow Sea
Abstract:
... The seasonal warming over the southwestern Yellow Sea (YS) in the spring is of vital importance to the local ecologic environment, especially to the massive green algae blooms of the YS in late spring and early summer. Based on daily optimum interpolation sea surface temperature (SST) data consisting of satellite derived SST from Advanced Very High Resolution Radiometer (AVHRR) and in situ measure ...
DOI:
10.3390/rs11212478

61. Response surface analysis of temperature-salinity interaction effects on water quality, growth and survival of shrimp Penaeus vannamei postlarvae raised in biofloc intensive nursery production

Author:
Jesus T. Ponce-Palafox; Ángel Alcalá Pavia; Dalia G. Mendoza López; José Luis Arredondo-Figueroa; Fabiola Lango-Reynoso; María del Refugio Castañeda-Chávez; Hector Esparza-Leal; Arturo Ruiz-Luna; Federico Páez-Ozuna; Sergio G. Castillo-Vargasmachuca; Viridiana Peraza-Gómez
Source:
Aquaculture 2019 v.503 pp. 312-321
ISSN:
0044-8486
Subject:
Chlorophyta; Litopenaeus vannamei; Rotifera; ammonium nitrogen; biofloc technology; body weight; dissolved oxygen; feed conversion; juveniles; nitrates; nitrites; phytoplankton; postlarvae; response surface methodology; salinity; shrimp; specific growth rate; surface area; temperature; total suspended solids; water quality; zooplankton
Abstract:
... This study aimed to evaluate the effect of temperature-salinity interaction on physico-chemical parameters, plankton composition, performance growth, and survival of shrimp Penaeus vannamei raised in intensive nursery production with biofloc system and zero-water exchange, by means of the response surfaces analysis. A 3 × 3 factorial experiment was conducted to determine the effects of temperature ...
DOI:
10.1016/j.aquaculture.2019.01.020

62. Responses of freshwater algal cell density to hydrochemical variables in an urban aquatic ecosystem, northern China

Author:
Jing Yang; Fei Wang; Junping Lv; Qi Liu; Fangru Nan; Shulian Xie; Jia Feng
Source:
Environmental monitoring and assessment 2019 v.191 no.1 pp. 29
ISSN:
0167-6369
Subject:
Bacillariophyceae; Chlorophyta; Cyanobacteria; algae; ammonium nitrogen; aquatic ecosystems; biological resources; chemical oxygen demand; chlorophyll; cluster analysis; environmental management; freshwater; multidimensional scaling; oxygen; pH; rivers; summer; sustainable development; total nitrogen; total phosphorus; water quality; water temperature; wet season; China
Abstract:
... In this paper, the algal cell density of cyanobacteria, green algae, and diatoms and their responses to the hydrochemical factors were analyzed to reveal the structural characteristics of water quality in an urban river. A total of nine sampling sites from upstream to downstream was explored in our study. At each site, the density of algae was identified every week during the wet season (June–Octo ...
DOI:
10.1007/s10661-018-7177-2

63. Revisiting the Origin of Plant NBS-LRR Genes

Author:
Zhu-Qing Shao; Jia-Yu Xue; Qiang Wang; Bin Wang; Jian-Qun Chen
Source:
Trends in plant science 2019 v.24 no.1 pp. 9-12
ISSN:
1360-1385
Subject:
Chlorophyta; ancestry; disease resistance; genes; pathogens
Abstract:
... The NBS-LRR genes are functionally responsible for plant resistance to alien pathogens. Here, we show that NBS-LRR genes originated in the common ancestor of the whole green lineage, and have rapidly diverged into three subclasses with different domain combinations (TNL, CNL, and RNL) before the split of green algae. ...
DOI:
10.1016/j.tplants.2018.10.015

64. Seasonal and successional patterns of phytoplankton in Epe Lagoon, Lagos, Nigeria

Author:
OA Kunrunmi; TA Adesalu
Source:
African journal of aquatic science 2019 v.44 no.4 pp. 349-360
ISSN:
1727-9364
Subject:
Aulacoseira; Chlorophyta; Cyanobacteria; Euglenozoa; Melosira; Mougeotia; biomass; calcium; correspondence analysis; dry season; light microscopy; oils; phytoplankton; public health; rain; salinity; silicates; species abundance; surface water; turbidity; wet season; Nigeria
Abstract:
... Variations in phytoplankton species abundance and composition are regulated by changes in physico-chemical factors. A study of biodiversity and successional sequences was carried out monthly from November 2012 to April 2014 to determine the environmental factors controlling phytoplankton assemblages in Epe Lagoon, Lagos, Nigeria. Surface water and phytoplankton samples were collected from 12 stati ...
DOI:
10.2989/16085914.2019.1650000

65. Simulating seasonal variability of phytoplankton in stream water using the modified SWAT model

Author:
JongCheol Pyo; Yakov A. Pachepsky; Minjeong Kim; Sang-Soo Baek; Hyuk Lee; YoonKyung Cha; Yongeun Park; Kyung Hwa Cho
Source:
Environmental modelling & software 2019 v.122 pp. 104073
ISSN:
1364-8152
Subject:
Bacillariophyceae; Chlorophyta; Cyanobacteria; Soil and Water Assessment Tool model; algae; algal blooms; best management practices; biomass; computer software; die-off; multipliers; nutrients; phytoplankton; prediction; seasonal variation; streams; temperature; watersheds
Abstract:
... The ability to simulate algal systems is critical for watershed-scale models. The objective of this study was to develop and evaluate a modified algal module that simulates the dynamics of three major algal groups (cyanobacteria, green algae, and diatoms) in a stream using variables available in the Soil and Water Assessment Tool. The proposed module 1) models the dynamics of the three algal group ...
DOI:
10.1016/j.envsoft.2017.11.005

66. Small heat shock protein genes of the green algae Closterium ehrenbergii: Cloning and differential expression under heat and heavy metal stresses

Author:
Sofia Abassi; Hui Wang; Thangaraj Ponmani; Jang‐Seu Ki
Source:
Environmental toxicology 2019 v.34 no.9 pp. 1013-1024
ISSN:
1520-4081
Subject:
Chlorophyta; Closterium; amino acids; biomarkers; chaperonins; chloroplasts; complementary DNA; dose response; freshwater; gene expression regulation; genes; heat; heat shock proteins; heat stress; heavy metals; models; open reading frames; reactive oxygen species; stress response; toxic substances; toxicity; transcription (genetics)
Abstract:
... The freshwater green algae Closterium ehrenbergii has been considered as a model for eco‐toxicological assessment in aquatic systems. Heat shock proteins (HSPs) are a class of highly conserved proteins produced in all living organisms, which participate in environmental stress responses. In the present study, we determined the cDNA sequences of small heat shock protein 10 (sHSP10) and sHSP17.1 fro ...
DOI:
10.1002/tox.22772

67. Spatial and temporal variations in composition of algae assemblages with environmental variables in an urban stream (Ankara, Turkey)

Author:
Tülay Özer; İlkay Açıkgöz Erkaya; Mehmet Ali T. Koçer; Abel U. Udoh; Dilek Yalçın Duygu
Source:
Environmental monitoring and assessment 2019 v.191 no.6 pp. 387
ISSN:
0167-6369
Subject:
Bacillariophyta; Charophyta; Chlorophyta; Cyanobacteria; Euglenozoa; Ochrophyta; algae; ammonia; aquatic ecosystems; cluster analysis; correspondence analysis; dissolved oxygen; environmental factors; indicator species; nutrients; phytoplankton; rivers; spatial variation; species diversity; stream flow; streams; temporal variation; water pollution; water quality; watersheds; Turkey (country)
Abstract:
... Phytoplankton and epipelon assemblages form the main constituents, and they are producers in aquatic ecosystems, such as streams and rivers. This study was carried out between May 2008 and April 2009 to determine the impacts of polluted water on species variations, compositions, and community metrics in phytoplankton and epipelon at six stations on Ankara Stream. A total of 231 taxa were recorded ...
DOI:
10.1007/s10661-019-7527-8

68. Spatial distribution, seasonal variation and risks of legacy and emerging per- and polyfluoroalkyl substances in urban surface water in Beijing, China

Author:
Yuan Wang; Yali Shi; Yaqi Cai
Source:
Science of the total environment 2019 v.673 pp. 177-183
ISSN:
0048-9697
Subject:
risk; rivers; Daphnia; lakes; winter; Chlorophyta; aquatic environment; risk assessment; seasonal variation; sulfonic acids; fish; summer; surface water; China
Abstract:
... In the current study, we investigated the occurrence, spatial distribution and seasonal variation of per- and polyfluoroalkyl substances (PFASs), including one group of emerging PFASs, the chlorinated polyfluoroalkyl ether sulfonic acids (Cl-PFESAs), in urban surface water (river and lake) samples from October 2013 to September 2014 (except during the frozen period) in Beijing, China. Perfluorobut ...
DOI:
10.1016/j.scitotenv.2019.04.067

69. Species diversity of resident green algae slows the establishment and proliferation of the cyanobacterium Microcystis aeruginosa

Author:
Madeline P. Nolan; Bradley J. Cardinale
Source:
Limnologica 2019 v.74 pp. 23-27
ISSN:
0075-9511
Subject:
Chlorophyta; Microcystis aeruginosa; algal blooms; biocenosis; biomass; environmental factors; laboratory experimentation; nutrients; phytoplankton; species richness
Abstract:
... As harmful algal blooms (HABs) have expanded in size and become more frequent, there have been increased efforts to predict when and why blooms occur, as well as to identify the ecological factors that limit their formation. Here we report the results of a laboratory experiment in which we examined how the establishment and proliferation of Microcystis aeruginosa, a common HAB species, was influen ...
DOI:
10.1016/j.limno.2018.09.002

70. Stress-induced changes in the ultrastructure of the photosynthetic apparatus of green microalgae

Author:
Olga Gorelova; Olga Baulina; Tatiana Ismagulova; Kamilya Kokabi; Elena Lobakova; Irina Selyakh; Larisa Semenova; Olga Chivkunova; Olga Karpova; Pavel Scherbakov; Inna Khozin-Goldberg; Alexei Solovchenko
Source:
Protoplasma 2019 v.256 no.1 pp. 261-277
ISSN:
0033-183X
Subject:
Chlorophyta; acclimation; autotrophs; chloroplast membranes; microalgae; phenotype; photolysis; photosynthesis; risk; starvation; stress response; thylakoids; transmission electron microscopy; ultrastructure
Abstract:
... In photosynthetic organisms including unicellular algae, acclimation to and damage by environmental stresses are readily apparent at the level of the photosynthetic apparatus. Phenotypic manifestations of the stress responses include rapid and dramatic reduction of photosynthetic activity and pigment content aimed at mitigating the risk of photooxidative damage. Although the physiological and mole ...
DOI:
10.1007/s00709-018-1294-1

71. Structural and functional differentiation of the light‐harvesting protein Lhcb4 during land plant diversification

Author:
Pascal Albanese; Marcello Manfredi; Emilio Marengo; Guido Saracco; Cristina Pagliano
Source:
Physiologia plantarum 2019 v.166 no.1 pp. 336-350
ISSN:
0031-9317
Subject:
Chlorophyta; Pisum sativum; absorption; biomass; energy transfer; light harvesting complex; models; photosystem II; phylogeny; proteomics; solar radiation; thylakoids; trophic relationships; vascular plants
Abstract:
... About 475 million years ago, plants originated from an ancestral green alga and evolved first as non‐vascular and later as vascular plants, becoming the primary producers of biomass on lands. During that time, the light‐harvesting complex II (LHCII), responsible for sunlight absorption and excitation energy transfer to the photosystem II (PSII) core, underwent extensive differentiation. Lhcb4 is a ...
DOI:
10.1111/ppl.12964

72. There to stay: invasive filamentous green alga Mougeotia in Lake Kinneret, Israel

Author:
Tamar Zohary; Alla Alster; Ora Hadas; Ulrike Obertegger
Source:
Hydrobiologia 2019 v.831 no.1 pp. 87-100
ISSN:
0018-8158
Subject:
Chlorophyta; Mougeotia; algae; biomass; cryptic species; environmental factors; lakes; models; niches; nutrient content; nutrients; pH; plankton; plasticity; regression analysis; solar radiation; spring; temporal variation; winter; Israel
Abstract:
... Mougeotia (Zygnematales, Charophyta) first appeared in the plankton of Lake Kinneret in 1998. While initially rare, from 2004 onwards it was present in the plankton continuously, forming massive blooms in spring (2005, 2006, 2012) or in winter (2010), occasionally appearing in different morphological and life cycle forms. Mougeotia maintained its population under a wide range of water temperatures ...
DOI:
10.1007/s10750-018-3522-2

73. To measure chlorophyll or phytoplankton biovolume: an aquatic conundrum with implications for the management of lakes

Author:
Daniel E. Canfield; Roger W. Bachmann; Mark V. Hoyer; Liselotte S. Johansson; Martin Søndergaard; Erik Jeppesen
Source:
Lake and reservoir management 2019 v.35 no.2 pp. 181-192
ISSN:
2151-5530
Subject:
Bacillariophyceae; Chlorophyta; Cyanobacteria; algae; biomass; chlorophyll; confidence interval; lakes; monitoring; nutrients; odors; phytoplankton; population dynamics; taste; total nitrogen; total phosphorus; turbidity; variance; Denmark; Florida
Abstract:
... Canfield DE, Jr., Bachmann RW, Hoyer MV, Johansson LS, Søndergaard M, and Jeppesen E. 2018. To measure chlorophyl or phytoplankton biovolume: an aquatic conundrum with implications for the management of lakes. Lake Reserv Manage. 35:181–192. The log₁₀-transformed relationship between measured phytoplankton biovolumes and chlorophyll concentrations, surrogates for algal biomass, was examined using ...
DOI:
10.1080/10402381.2019.1607958

74. Transcriptome Profiling of Bigelowiella natans in Response to Light Stress

Author:
Pattarasiri Rangsrikitphoti; Dion G. Durnford
Source:
journal of eukaryotic microbiology 2019 v.66 no.2 pp. 316-333
ISSN:
1066-5234
Subject:
Chlorophyta; abiotic stress; biochemical pathways; endosymbionts; energy; evolution; free radical scavengers; genes; light intensity; photooxidation; photosystem II; reactive oxygen species; reducing agents; sequence analysis; symbiosis; transcription (genetics); transcriptomics
Abstract:
... Bigelowiella natans is a marine chlorarachniophyte whose plastid was acquired secondarily via endosymbiosis with a green alga. During plastid evolution, the photosynthetic endosymbiont would have integrated with the host metabolic pathways. This would require the evolution and coordination of strategies to cope with changes in light intensity that includes changes in the expression of both endosym ...
DOI:
10.1111/jeu.12672

75. Ulvan, a bioactive marine sulphated polysaccharide as a key constituent of hybrid biomaterials: A review

Author:
Leto-Aikaterini Tziveleka; Efstathia Ioannou; Vassilios Roussis
Source:
Carbohydrate polymers 2019 v.218 pp. 355-370
ISSN:
0144-8617
Subject:
Chlorophyta; bioactive properties; biocompatible materials; bones; cell walls; chondroitin sulfate; drugs; hyaluronic acid; hydrogels; nanofibers; physicochemical properties; tissue engineering
Abstract:
... Ulvan, a sulphated polysaccharide located in the cell walls of green algae that possesses unique structural properties albeit its repeating unit shares chemical affinity with glycosoaminoglycans, such as hyaluronan and chondroitin sulphate, has been increasingly studied over the years for applications in the pharmaceutical field. The increasing knowledge on ulvan’s chemical properties and biologic ...
DOI:
10.1016/j.carbpol.2019.04.074

76. Unity and diversity among viral kinases

Author:
Chintalapati Janaki; Manoharan Malini; Nidhi Tyagi; Narayanaswamy Srinivasan
Source:
Gene 2019 pp. -
ISSN:
0378-1119
Subject:
Chlorophyta; DNA; Herpesvirales; Phycodnaviridae; RNA; Retroviridae; active sites; data collection; genomics; host specificity; humans; literature; oncogenes; protein kinases; protein phosphorylation; sequence homology; serine; threonine; tyrosine; virulence; viruses
Abstract:
... Viral kinases are known to undergo autophosphorylation and also phosphorylate viral and host substrates. Viral kinases have been implicated in various diseases and are also known to acquire host kinases for mimicking cellular functions and exhibit virulence. Although substantial analyses have been reported in the literature on diversity of viral kinases, there is a gap in the understanding of sequ ...
DOI:
10.1016/j.gene.2019.144134

77. Water-level fluctuations are key for phytoplankton taxonomic communities and functional groups in Poyang Lake

Author:
Jinfu Liu; Yuwei Chen; Mingjia Li; Baogui Liu; Xia Liu; Zhaoshi Wu; Yongjiu Cai; Jinying Xu; Jianjun Wang
Source:
Ecological indicators 2019 pp. -
ISSN:
1470-160X
Subject:
Aulacoseira; Bacillariophyceae; Chlorophyta; Cyanobacteria; biomass; environmental factors; environmental indicators; floodplains; lakes; mixing; physicochemical properties; phytoplankton; seasonal variation
Abstract:
... Biological species can be assembled into functional groups based on functional traits, which are keys to understanding the response of phytoplankton to environmental factors, such as the physical and chemical characteristics of aquatic systems. Here, we studied the taxonomic and functional communities of phytoplankton over three years in Poyang Lake and further examined the effect of water-level o ...
DOI:
10.1016/j.ecolind.2019.05.021

78. Whole-Ecosystem Experiments Reveal Varying Responses of Phytoplankton Functional Groups to Epilimnetic Mixing in a Eutrophic Reservoir

Author:
Mary E. Lofton; Ryan P. McClure; Shengyang Chen; John C. Little; Cayelan C. Carey
Source:
Water 2019 v.11 no.2 pp. -
ISSN:
2073-4441
Subject:
Bacillariophyceae; Chlorophyta; Cyanobacteria; biomass; community structure; drinking water; ecosystems; eutrophication; lakes; mixers; mixing; moieties; phytoplankton; prediction; sediments; total phosphorus; water reservoirs
Abstract:
... Water column mixing can influence community composition of pelagic phytoplankton in lakes and reservoirs. Previous studies suggest that low mixing favors cyanobacteria, while increased mixing favors green algae and diatoms. However, this shift in community dominance is not consistently achieved when epilimnetic mixers are activated at the whole-ecosystem scale, possibly because phytoplankton commu ...
DOI:
10.3390/w11020222

79. A comparison of microeukaryote communities inhabiting sponges and seawater in a Taiwanese coral reef system

Author:
Daniel Francis Richard Cleary
Source:
Annals of microbiology 2019 v.69 no.8 pp. 861-866
ISSN:
1590-4261
Subject:
Animalia; Chlorophyta; Dinophyceae; Metamonada; biotopes; community structure; coral reefs; prokaryotic cells; seawater; sequence homology; Taiwan
Abstract:
... PURPOSE: Assess microeukaryote community composition in seawater and sponge samples from Taiwanese coral reefs. METHODS: In the present study, we used Illumina sequencing to explore the microeukaryote communities of seven biotopes (six sponge species and seawater) sampled in the Penghu archipelago of Taiwan. RESULT: Microeukaryote communities were dominated by Dinoflagellates with Dinophyceae and ...
DOI:
10.1007/s13213-019-01476-5

80. The evolution of the plastid phosphate translocator family

Author:
Mathias Bockwoldt; Ines Heiland; Karsten Fischer
Source:
Planta 2019 v.250 no.1 pp. 245-261
ISSN:
0032-0935
Subject:
Angiospermae; Chlorophyta; algae; crops; cytosol; gene duplication; grasses; introns; metabolites; phosphates; phylogeny; substrate specificity; transporters
Abstract:
... MAIN CONCLUSION: The plastid phosphate translocators evolved in algae but diversified into several groups, which adopted different physiological functions by extensive gene duplications and losses in Streptophyta. The plastid phosphate translocators (pPT) are a family of transporters involved in the exchange of metabolites and inorganic phosphate between stroma and cytosol. Based on their substrat ...
DOI:
10.1007/s00425-019-03161-y

81. A multi-proxy palaeolimnological record of the last 16,600 years from coastal Lake Kushu in northern Japan

Author:
Mareike Schmidt; Christian Leipe; Fabian Becker; Tomasz Goslar; Philipp Hoelzmann; Jens Mingram; Stefanie Müller; Rik Tjallingii; Mayke Wagner; Pavel E. Tarasov
Source:
Palaeogeography, palaeoclimatology, palaeoecology 2019 v.514 pp. 613-626
ISSN:
0031-0182
Subject:
Aulacoseira; Bacillariophyceae; Chlorophyta; X-ray fluorescence spectroscopy; cooling; eutrophication; freshwater; freshwater lakes; pollen; sea level; sediments; transgressive segregation; watersheds; Japan
Abstract:
... Based on diatom, aquatic pollen and non-pollen palynomorph (NPP), lake sediment microfacies, and X-ray fluorescence (XRF) analyses we define three main phases of lake basin development including a marshy phase (ca. 16,600–9400 cal. yr BP), lagoon phase (ca. 9400–5900 cal. yr BP) and freshwater lake phase (since ca. 5900 cal. yr BP). Marine influence on the lake system linked to global sea-level ri ...
DOI:
10.1016/j.palaeo.2018.11.010

82. Algae community response to climate change and nutrient loading recorded by sedimentary phytoplankton pigments in the Changtan Reservoir, China

Author:
Shouliang Huo; Hanxiao Zhang; Chunzi Ma; Beidou Xi; Jingtian Zhang; Zhuoshi He; Xiaochuang Li; Fengchang Wu
Source:
Journal of hydrology 2019 v.571 pp. 311-321
ISSN:
0022-1694
Subject:
Bacillariophyceae; Chlorophyta; Cyanobacteria; air temperature; algae; biomass; global warming; hydrology; models; phosphorus; phytoplankton; pigments; pollution load; water quality; China
Abstract:
... Climate change is likely to stimulate variations in phytoplankton composition and production in gradually eutrophicating water, with negative consequences for the water quality of many reservoirs. This study analyzed the effects of climate warming and increased nutrient loading on algae communities recorded by sedimentary pigments in the Changtan Reservoir of southeastern China from 1985 to 2015. ...
DOI:
10.1016/j.jhydrol.2019.02.005

83. The Arabidopsis chloroplast RNase J displays both exo- and robust endonucleolytic activities

Author:
Michal Halpert; Varda Liveanu; Fabian Glaser; Gadi Schuster
Source:
Plant molecular biology 2019 v.99 no.1-2 pp. 17-29
ISSN:
0167-4412
Subject:
Arabidopsis; Archaea; Bacillus subtilis; Chlorophyta; DNA-binding domains; RNA-binding proteins; amino acids; bacteria; catalytic activity; chloroplast genes; chloroplasts; enzyme activity; gene expression; messenger RNA; mutation; ribonucleases; transcription factors
Abstract:
... KEY MESSAGE: Arabidopsis chloroplast RNase J displaces both exo- and endo-ribonucleolytic activities and contains a unique GT-1 DNA binding domain. Control of chloroplast gene expression is predominantly at the post-transcriptional level via the coordinated action of nuclear encoded ribonucleases and RNA-binding proteins. The 5′ end maturation of mRNAs ascribed to the combined action of 5′→3′ exor ...
DOI:
10.1007/s11103-018-0799-5

84. Assemblage of encrusting organisms on floating anthropogenic debris along the northern coast of the Persian Gulf

Author:
Fatemeh Shabani; Ali Nasrolahi; Martin Thiel
Source:
Environmental pollution 2019 v.254 pp. 112979
ISSN:
0269-7491
Subject:
Balanus amphitrite; Bryozoa; Chlorophyta; Polychaeta; Saccostrea cucullata; cans; coasts; corals; glass; invasive species; marine debris; monitoring; oceans; oysters; plastics; risk; species richness; surface water; wood; Persian Gulf
Abstract:
... Global concern about floating marine debris and its fundamental role in shaping coastal biodiversity is growing, yet there is very little knowledge about debris-associated rafting communities in many areas of the world's oceans. In the present study, we examined the encrusting assemblage on different types of stranded debris (wood, plastic, glass, and metal cans) along the Iranian coast of the Per ...
DOI:
10.1016/j.envpol.2019.112979

85. Bio-optical and physiological patterns in Antarctic seaweeds: A functional trait based approach to characterize vertical zonation

Author:
Iván Gómez; Nelso P. Navarro; Pirjo Huovinen
Source:
Progress in oceanography 2019 v.174 pp. 17-27
ISSN:
0079-6611
Subject:
Chlorophyta; Phaeophyceae; Rhodophyta; absorption; biogeochemistry; coastal ecosystems; ecosystem services; geographical distribution; littoral zone; macroalgae; morphs; photosynthesis; spatial distribution; stress tolerance; temperature; thallus; ultraviolet radiation; wavelengths; Antarctic region
Abstract:
... A suite of photosynthetic and bio-optical properties of 29 Antarctic seaweeds from Fildes Bay, King George Island, were studied in order to address the question whether their different functional traits, grouped according to gross morphology, bathymetric distribution, taxonomic category and biogeographic affinity, can explain the observed patterns of vertical distribution and relevant ecosystems s ...
DOI:
10.1016/j.pocean.2018.03.013

86. Bio-removal of Zn from contaminated water by using green algae isolates

Author:
Azam Heidarpour; Nasser Aliasgharzad; Elaheh Khoshmanzar; Bahman khoshru; Behnam Asgari Lajayer
Source:
Environmental technology & innovation 2019 pp. -
ISSN:
2352-1864
Subject:
Chlorophyta; absorption; algae; heavy metals; municipal wastewater; pH; pollution control; sewage; toxic substances; water pollution; water resources; zinc; Iran
Abstract:
... Wastewater is one of the main sources of the heavy metals. These hazardous compounds find their way through water resources and consequently threaten human being’s life and other living organisms. Several solutions have been proposed to address this issue. Nowadays, using algae to eliminate these elements is the most effective method in terms of cost and time in comparison with other biological an ...
DOI:
10.1016/j.eti.2019.100464

87. Bioethanol production from microalgae polysaccharides

Author:
Gergely Ernő Lakatos; Karolína Ranglová; João Câmara Manoel; Tomáš Grivalský; Jiří Kopecký; Jiří Masojídek
Source:
Folia microbiologica 2019 v.64 no.5 pp. 627-644
ISSN:
0015-5632
Subject:
Chlorophyta; Cyanobacteria; biodiesel; bioethanol; biogas; biomass; carbohydrate content; carbon dioxide; energy; ethanol production; feedstocks; fermentation; fuel production; glycogen; lipids; markets; microalgae; production technology; starch
Abstract:
... The worldwide growing demand for energy permanently increases the pressure on industrial and scientific community to introduce new alternative biofuels on the global energy market. Besides the leading role of biodiesel and biogas, bioethanol receives more and more attention as first- and second-generation biofuel in the sustainable energy industry. Lately, microalgae (green algae and cyanobacteria ...
DOI:
10.1007/s12223-019-00732-0

88. Comparative analysis of strategies to prepare electron sinks in aquatic photoautotrophs

Author:
Ginga Shimakawa; Akio Murakami; Kyosuke Niwa; Yusuke Matsuda; Ayumi Wada; Chikahiro Miyake
Source:
Photosynthesis research 2019 v.139 no.1-3 pp. 401-411
ISSN:
0166-8595
Subject:
Angiospermae; Chlorophyta; Cryptista; Cyanobacteria; Haptophyta; Rhodophyta; algae; autotrophs; chlorophyll; electrons; embryophytes; genes; lighting; oxidation; oxygen; photorespiration; photosystem I; proteins; reactive oxygen species; risk
Abstract:
... While subject to illumination, photosystem I (PSI) has the potential to produce reactive oxygen species (ROS) that can cause photo-oxidative damage in oxygenic photoautotrophs. The reaction center chlorophyll in PSI (P700) is kept oxidized in excess light conditions to limit over-excitation of PSI and alleviate the production of ROS. Oxidation of P700 requires a sufficient electron sink for PSI, w ...
DOI:
10.1007/s11120-018-0522-z

89. Different ecological mechanisms lead to similar grazer controls on the functioning of periphyton Antarctic and sub-Antarctic communities

Author:
Nelson Valdivia; Luis M. Pardo; Erasmo C. Macaya; Pirjo Huovinen; Iván Gómez
Source:
Progress in oceanography 2019 v.174 pp. 7-16
ISSN:
0079-6611
Subject:
Bacillariophyceae; Chlorophyta; Cyanobacteria; Fissurellidae; Miozoa; Phaeophyceae; biocenosis; chlorophyll; ecosystems; grazing; habitats; herbivores; littoral zone; models; periphyton; primary productivity; Antarctic region; Antarctica; Argentina
Abstract:
... The processes underpinning the differences between Antarctic and sub-Antarctic ecological communities are still unclear. Dispersal, drift, speciation, and abiotic environmental filtering have been considered to explain these differences; biotic interactions, however, have received less attention. Antarctic intertidal assemblages of macrobenthic grazers are characterised by numerically abundant pop ...
DOI:
10.1016/j.pocean.2018.01.008

90. Drivers and ecological consequences of dominance in periurban phytoplankton communities using networks approaches

Author:
Arthur Escalas; Arnaud Catherine; Selma Maloufi; Maria Cellamare; Sahima Hamlaoui; Claude Yéprémian; Clarisse Louvard; Marc Troussellier; Cécile Bernard
Source:
Water research 2019 v.163 pp. 114893
ISSN:
0043-1354
Subject:
Chlorophyta; Cyanobacteria; biodiversity; biomass; cohesion; ecological footprint; ecosystems; environmental impact; environmental quality; human population; phytoplankton; regression analysis; summer; surface water; total nitrogen; urban areas; water temperature; France
Abstract:
... Evaluating the causes and consequences of dominance by a limited number of taxa in phytoplankton communities is of huge importance in the current context of increasing anthropogenic pressures on natural ecosystems. This is of particular concern in densely populated urban areas where usages and impacts of human populations on water ecosystems are strongly interconnected. Microbial biodiversity is c ...
DOI:
10.1016/j.watres.2019.114893

91. Effects of arginine on Polytomella parva growth, PII protein levels and lipid body formation

Author:
Tatiana V. Lapina; Lidiya Yu. Kochemasova; Karl Forchhammer; Elena V. Ermilova
Source:
Planta 2019 v.250 no.4 pp. 1379-1385
ISSN:
0032-0935
Subject:
Chlorophyta; acetates; algae; ammonium; arginine; biosynthesis; carbon; droplets; enzymes; ethanol; lipid bodies; models; nitrogen; ornithine; protein content; starvation; triacylglycerols
Abstract:
... MAIN CONCLUSION: L-Arginine supports growth and resulted in increased PII signaling protein levels and lipid droplet accumulation in the colorless green alga Polytomella parva. Polytomella parva, a model system for nonphotosynthetic green algae, utilizes ammonium and several carbon sources, including ethanol and acetate. We previously reported that P. parva accumulates high amounts of arginine wit ...
DOI:
10.1007/s00425-019-03249-5

92. Effects of photochemical and microbiological changes in terrestrial dissolved organic matter on its chemical characteristics and phytotoxicity towards cyanobacteria

Author:
Amanda D. Neilen; Anthony R. Carroll; Darryl W. Hawker; Katherine R. O'Brien; Michele A. Burford
Source:
Science of the total environment 2019 v.695 pp. 133901
ISSN:
0048-9697
Subject:
Casuarina cunninghamiana; Chlorophyta; Eucalyptus tereticornis; Raphidiopsis; absorbance; bioassays; carbon nitrogen ratio; color; dissolved organic matter; experimental design; glucose; laboratory experimentation; leachates; leaves; models; molecular weight; nitrogen content; nuclear magnetic resonance spectroscopy; phenol; photochemistry; photosynthesis; phytotoxicity; plants (botany); reactive oxygen species; solar radiation
Abstract:
... Previous studies have shown that under laboratory conditions, dissolved organic matter (DOM) leached from plants can be differentially more phytotoxic to cyanobacteria, compared to green algae. This study examined how DOM source and transformation processes (microbial and photochemical) affect its chemical composition and phytotoxicity towards a cultured species of cyanobacteria (Raphidiopsis raci ...
DOI:
10.1016/j.scitotenv.2019.133901

93. Electrochemical degradation of sunscreen agent benzophenone-3 and its metabolite by Ti/SnO2-Sb/Ce-PbO2 anode: Kinetics, mechanism, toxicity and energy consumption

Author:
Chengzhi Zhou; Yanping Wang; Jie Chen; Junfeng Niu
Source:
Science of the total environment 2019 v.688 pp. 75-82
ISSN:
0048-9697
Subject:
Chlorophyta; Daphnia; anodes; aromatic compounds; benzophenones; carboxylation; chlorides; electrochemistry; energy; fish; hydroxylation; metabolites; models; moieties; pH; quantitative structure-activity relationships; risk; sunscreens; toxicity; wastewater
Abstract:
... Electrochemical degradation of sunscreen agent benzophenone-3 (BP-3) and its metabolite 4-hydroxybenzophenone (4-OH-BP) was investigated by using a Ti/SnO2-Sb/Ce-PbO2 anode. Results showed that the degradation of BP-3 and 4-OH-BP followed pseudo-first-order kinetics, and the rate constants were 0.083 and 0.113 min−1 at a current density of 25 mA cm−2, respectively. The electrochemical degradation ...
DOI:
10.1016/j.scitotenv.2019.06.197

94. An Enhanced System with Macrophytes and Polyurethane Sponge as an Eco-Technology for Restoring Eutrophic Water: A Pilot Test

Author:
Yijie Wang; Xinan Yin; Yanpeng Cai; Zhifeng Yang
Source:
Water 2019 v.11 no.9 pp. -
ISSN:
2073-4441
Subject:
Bacillariophyceae; Chlorophyta; Cyanobacteria; ammonium nitrogen; biofilm; biological treatment; chemical oxygen demand; dominant species; ecological restoration; equipment; eutrophication; lakes; macrophytes; nitrogen; nutrients; phosphorus; phytoplankton; polyurethanes; ponds; remediation; total nitrogen; total phosphorus; trophic relationships; water quality
Abstract:
... Water eutrophication is one of the most serious environmental problems in urban lakes and ponds due to the excessive nutrients. To deal with this problem, the development of methods for supporting ecological rehabilitation has been undertaken. Meanwhile, the trophic interactions during rehabilitation also have been analyzed. In this study, a new technique was employed to solve the water eutrophica ...
DOI:
10.3390/w11091828

95. Enhanced real-time cyanobacterial fluorescence monitoring through chlorophyll-a interference compensation corrections

Author:
F. Choo; A. Zamyadi; R.M. Stuetz; G. Newcombe; K. Newton; R.K. Henderson
Source:
Water research 2019 v.148 pp. 86-96
ISSN:
0043-1354
Subject:
Chlorophyta; Cyanobacteria; chlorophyll; drinking; fluorescence; monitoring; phycocyanin
Abstract:
... In situ fluorometers can be used as a real-time cyanobacteria detection tool to maintain safe drinking and recreational water standards. However, previous studies into fluorometers have established issues arising mainly from measurement inaccuracies due to green algae interference. Therefore, this study focusses on developing correction factors from a systematic study on the impact of green algae ...
DOI:
10.1016/j.watres.2018.10.034

96. Evolutionary origin of O‐acetyltransferases responsible for glucomannan acetylation in land plants

Author:
Ruiqin Zhong; Dongtao Cui; Zheng‐Hua Ye
Source:
new phytologist 2019 v.224 no.1 pp. 466-479
ISSN:
0028-646X
Subject:
Amorphophallus; Arabidopsis; Bryophyta; Chlorophyta; Klebsormidium; Picea; Populus; Selaginella; acetylation; acetyltransferases; algae; cell walls; embryophytes; enzyme activity; genes; glucomannans; mosses and liverworts; phylogeny; recombinant proteins; rice; vascular plants
Abstract:
... Mannans are an abundant cell wall polysaccharide in bryophytes, seedless vascular plants and gymnosperms. A previous study has shown that mannan acetylation in Arabidopsis and konjac is mediated by mannan O‐acetyltransferases belonging to the Domain of Unknown Function (DUF) 231 family. However, little is known about the acetylation patterns of mannans in bryophytes and seedless vascular plants, a ...
DOI:
10.1111/nph.15988

97. Feasibility of carbon-doped BN nanosheets as photocatalyst for degradation of 4-chloroguaiacol and ecotoxicity fate during indirect photochemical transformation

Author:
Bo Wei; Jianfei Sun; Qiong Mei; Zexiu An; Xueyu Wang; Haijie Cao; Dandan Han; Maoxia He
Source:
Journal of catalysis 2019 v.379 pp. 10-17
ISSN:
0021-9517
Subject:
Chlorophyta; Daphnia; adsorption; carbon; catalytic activity; ecotoxicology; energy; fish; hydroxyl radicals; nanosheets; photocatalysts; photochemistry; pollutants; toxicity; trophic levels
Abstract:
... Although carbon-doped BN nanosheet (BCN) has been successfully synthesized and used, it has not been reported as a photocatalyst for the degradation of organic pollutants. In this study, 4-chloroguaiacol (4-CG) was selected as a representative substance to investigate the potential of utilizing BCN as photocatalyst for organic removal by use of computational simulation. The adsorption mechanisms, ...
DOI:
10.1016/j.jcat.2019.09.017

98. Feeding by two closely related species of Chironomus (Diptera: Chironomidae) in south Baltic lagoons, with implications for competitive interactions and resource partitioning

Author:
Ryszard Kornijów; Marina Markiyanova; Evgenia Lange
Source:
Aquatic ecology 2019 v.53 no.3 pp. 315-324
ISSN:
1386-2588
Subject:
Bacillariophyceae; Chironomus plumosus; Chlorophyta; Cyanobacteria; Oligochaeta; Rotifera; animals; conidia; deglutition; detritus; digestive system; eutrophication; feeding behavior; fungi; insect larvae; interspecific competition; pollen; salinity
Abstract:
... Four major categories of food items were determined in the gut content of chironomid larvae collected in the Curonian and Vistula Lagoons in the spring–summer period of 2009–2011. These were detritus (range from 88 to 92% of the gut content, by volume), matter of plant (2–7%) and animal origin (0.2–0.5%), and mineral particles (3–7%). Plant matter comprised pine pollen, conidia of fungi, cyanobact ...
DOI:
10.1007/s10452-019-09691-7

99. Food and feeding habits of some Nile River fish and their relationship to the availability of natural food resources

Author:
Hussein A. El-Naggar; Hassan M.M. Khalaf Allah; Mostafa F. Masood; Walaa M. Shaban; Mansour A.E. Bashar
Source:
Egyptian Journal of Aquatic Research (Online) 2019 v.45 no.3 pp. 273-280
ISSN:
2090-3278
Subject:
Alestes; Bacillariophyta; Chlorophyta; Cladocera; Copepoda; Cyanobacteria; Decapoda; Dinophyceae; Insecta; Labeo niloticus; Lates niloticus; Mollusca; Mormyrus; Oreochromis niloticus; Polychaeta; Protozoa; Retaria; Rotifera; benthic organisms; carnivores; fish; food availability; forage; herbivores; immatures; omnivores; phytoplankton; spring; stomach; zooplankton; Nile River
Abstract:
... The present work aims to investigate the food items and the feeding habits of some Nile fish namely; Alestes baremoze, Labeo niloticus, Mormyrus kannume and Oreochromis niloticus that were collected from El-Qanater Al-Khairia during spring 2018 as well as to study their correlation with live food. The examination of the plankton samples revealed that there were 25 phytoplankton species belonging t ...
DOI:
10.1016/j.ejar.2019.08.004

100. Formation of a PSI–PSII megacomplex containing LHCSR and PsbS in the moss Physcomitrella patens

Author:
Ryo Furukawa; Michiki Aso; Tomomichi Fujita; Seiji Akimoto; Ryouichi Tanaka; Ayumi Tanaka; Makio Yokono; Atsushi Takabayashi
Source:
Journal of plant research 2019 v.132 no.6 pp. 867-880
ISSN:
0918-9440
Subject:
Arabidopsis; Chlorophyta; Physcomitrella patens; chlorophyll; embryophytes; fluorescence; freshwater; light harvesting complex; light intensity; models; mosses and liverworts; pH; photosystem II; polyacrylamide gel electrophoresis; solar radiation; thermal energy; zeaxanthin
Abstract:
... Mosses are one of the earliest land plants that diverged from fresh-water green algae. They are considered to have acquired a higher capacity for thermal energy dissipation to cope with dynamically changing solar irradiance by utilizing both the “algal-type” light-harvesting complex stress-related (LHCSR)-dependent and the “plant-type” PsbS-dependent mechanisms. It is hypothesized that the formati ...
DOI:
10.1007/s10265-019-01138-2