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1. Soil microbiome of the postmining areas in polar ecosystems in surroundings of Nadym, Western Siberia, Russia

Author:
Gladkov, Grigory; Kimeklis, Anastasiia; Zverev, Alexei; Pershina, Elizaveta; Ivanova, Ekaterina; Kichko, Arina; Andronov, Evgeny; Abakumov, Evgeny
Source:
Open Agriculture 2019 v.4 no.1 pp. 684-696
ISSN:
2391-9531
Subject:
Acidobacteria; Actinobacteria; Bacteroidetes; Chloroflexi; Cyanobacteria; Firmicutes; Planctomycetes; Proteobacteria; Verrucomicrobia; bacteria; disturbed soils; dry environmental conditions; ecosystems; forest soils; forests; frigid soils; genomic libraries; microbiome; nutrient availability; nutrient uptake; quarries; ribosomal RNA; soil microorganisms; vegetation cover; Siberia
Abstract:
... Localization of agriculture with the aim of local food support has become a very urgent topic for Yamal region. The most fertile soils of this region are sandy textured anthropogenically affected soils. Microbiomes from disturbed soils of the Nadym region were studied using analysis of 16S rRNA metagenomic libraries. It was shown that plant cover is a driving force of microbiome composition. Fores ...
DOI:
10.1515/opag-2019-0070

2. New Benthic Cyanobacteria from Guadeloupe Mangroves as Producers of Antimicrobials

Author:
Duperron, Sébastien; Beniddir, Mehdi A.; Durand, Sylvain; Longeon, Arlette; Duval, Charlotte; Gros, Olivier; Bernard, Cécile; Bourguet-Kondracki, Marie-Lise
Source:
Marine drugs 2019 v.18 no.1
ISSN:
1660-3397
Subject:
Cyanobacteria; anti-infective agents; antimicrobial properties; benthic organisms; liquid chromatography; metabolites; new species; pathogens; phylogeny; tandem mass spectrometry; Guadeloupe
Abstract:
... Benthic cyanobacteria strains from Guadeloupe have been investigated for the first time by combining phylogenetic, chemical and biological studies in order to better understand the taxonomic and chemical diversity as well as the biological activities of these cyanobacteria through the effect of their specialized metabolites. Therefore, in addition to the construction of the phylogenetic tree, indi ...
DOI:
10.3390/md18010016

3. Variability in cyanobacteria sensitivity to antibiotics and implications for environmental risk assessment

Author:
Le Page, Gareth; Gunnarsson, Lina; Trznadel, Maciej; Wedgwood, Kyle C.A.; Baudrot, Virgile; Snape, Jason; Tyler, Charles R.
Source:
The Science of the total environment 2019 v.695 pp. 133804
ISSN:
0048-9697
Subject:
Cyanobacteria; ampicillin; antibiotic resistance; azithromycin; bacteria; bacterial communities; bacterial growth; cefazolin; cefotaxime; community structure; ecological function; environmental assessment; environmental impact; mechanism of action; probability analysis; risk; risk assessment; sulfadiazine; toxicity
Abstract:
... Once released into the environment antibiotics can kill or inhibit the growth of bacteria, and in turn potentially have effects on bacterial community structure and ecosystem function. Environmental risk assessment (ERA) seeks to establish protection limits to minimise chemical impacts on the environment, but recent evidence suggests that the current regulatory approaches for ERA for antibiotics m ...
DOI:
10.1016/j.scitotenv.2019.133804

4. Tolyporphins L–R: Unusual Tetrapyrroles from a Brasilonema sp. of Cyanobacterium

Author:
Gurr, Joshua R.; Dai, Jingqiu; Philbin, Casey S.; Sartain, Hope T.; O’Donnell, Timothy J.; Yoshida, Wesley Y.; Rheingold, Arnold L.; Williams, Philip G.
Source:
Journal of organic chemistry 2019 v.85 no.2 pp. 318-326
ISSN:
1520-6904
Subject:
Cyanobacteria; X-radiation; constitutional isomers; organic chemistry; organic compounds; oxidation; stereochemistry
Abstract:
... Tolyporphins L–R (2–8) have been isolated from a mixed cyanobacterium-microbial culture. The structures of tolyporphins L and M have been revised to four constitutional isomers, isolated as two mixtures of dioxobacteriochlorins (2/3 and 4/5). In contrast, tolyporphin P (6) is a fully oxidized tetrapyrrole, while tolyporphins Q and R (7 and 8) are oxochlorins. X-ray structures are reported for the ...
DOI:
10.1021/acs.joc.9b01928
PubMed:
31815480
PubMed Central:
PMC6980383

5. EU Project of LIFE Programme ‘Algae Service for LIFE’ Develops Ecologicaly Sustainable Bioproducts from Freshwater Cyanobacteria and Macroalgae Biomas

Author:
Koreivienė, Judita; Karosienė, Jūratė; Kasperovičienė, Jūratė; Paškauskas, Ričardas; Łęska, Bogusława; Pankiewicz, Radosław; Juškaitė, Loreta; Zagorskis, Alvydas; Wilk-Woźniak, Elźbieta; Valskys, Vaidotas; Gulbinas, Zenonas; Walusiak, Edward; Krzton, Wojciech; Morudov, Dmitrij; Radzevičius, Kostas; Treska, Ewa; Tabisz, Łukasz; Papsdorf, Monika; Piotrowicz, Zuzanna; Messyasz, Beata
Source:
Botanica 2019 v.25 no.2 pp. 176-185
ISSN:
2538-8657
Subject:
Cyanobacteria; European Union; biobased products; biomass; circular economy; freshwater; harvesting; macroalgae; prototypes; recycling; socioeconomics; surveys; wastes
Abstract:
... ‘Algae Service for LIFE’, the project supported by the European Union, seeks to promote best practices in ecological service and the circular economy by implementing innovative complex system of three interlinked elements: i) prototypes for harvesting of cyanobacteria and macroalgae biomass; ii) distant methods for surveying of the blooms and defining hot-spots of algal agglomerations; and iii) re ...
DOI:
10.2478/botlit-2019-0019

6. Metataxonomic and metagenomic analysis of mangrove microbiomes reveals community patterns driven by salinity and pH gradients in Paranaguá Bay, Brazil

Author:
Ceccon, Denny Marcel; Faoro, Helisson; Lana, Paulo da Cunha; Souza, Emanuel Maltempi de; Pedrosa, Fábio de Oliveira
Source:
The Science of the total environment 2019 v.694 pp. 133609
ISSN:
0048-9697
Subject:
Acidobacteria; Actinobacteria; Avicennia; Bacteroidetes; Chloroflexi; Cyanobacteria; Laguncularia racemosa; Proteobacteria; Rhizophora mangle; Spartina alterniflora; biochemical pathways; chemical composition; community structure; ecosystems; estuaries; mangrove soils; metagenomics; microbial communities; microbiome; pH; ribosomal RNA; salinity; sediments; sequence analysis; Brazil
Abstract:
... While environmental drivers regulate the structure of mangrove microbial communities, their exact nature and the extent of their influence require further elucidation. By means of 16S rRNA gene-based sequencing, we determined the microbial taxonomic profiles of mangroves in the subtropical Paranaguá Bay, Brazil, considering as potential drivers: salinity, as represented by two sectors in the extre ...
DOI:
10.1016/j.scitotenv.2019.133609

7. Antibiotic resistance and microbiota in the gut of Chinese four major freshwater carp from retail markets

Author:
Yuan, Li; Wang, Li; Li, Zheng-Hao; Zhang, Ming-Qi; Shao, Wei; Sheng, Guo-Ping
Source:
Environmental pollution 2019 v.255 pp. 113327
ISSN:
0269-7491
Subject:
Acidobacteria; Bacteroidetes; Carassius; Chloroflexi; Ctenopharyngodon idella; Cyanobacteria; Firmicutes; Hypophthalmichthys molitrix; Hypophthalmichthys nobilis; Proteobacteria; antibiotic resistance; antibiotic resistance genes; carp; digestive system; food chain; food retailing; hosts; human health; humans; integrases; mercury; microorganisms; retail marketing; ribosomal RNA; risk; silver
Abstract:
... Fish-associated antibiotic resistance genes (ARGs) have attracted increasing attention due to their potential risks to human beings via the food chain. However, data are scarce regarding the antibiotic resistance in fish themselves. Herein, the antibiotic resistance genes (ARGs) were assessed in the gut of four major Chinese freshwater carp (i.e., silver carp, grass carp, bighead carp, and crucian ...
DOI:
10.1016/j.envpol.2019.113327

8. Biodegradation kinetics of microcystins-LR crude extract by Lysinibacillus boronitolerans strain CQ5

Author:
Shen, Rongyan; Chen, Zehui; Dong, Xiaona; Shen, Hongchi; Su, Peng; Mao, Linqiang; Zhang, Wenyi
Source:
Annals of microbiology 2019 v.69 no.12 pp. 1259-1266
ISSN:
1590-4261
Subject:
Cyanobacteria; Lysinibacillus; biodegradation; carbon; cell growth; cost effectiveness; engineering; equations; growth curves; growth models; kinetics; logit analysis; mathematical models; microcystin-LR; nitrogen; nucleotide sequences; pH; phylogeny; ribosomal DNA; sequence analysis
Abstract:
... PURPOSE: As the most common variant of microcystins (MCs), microcystin-LR (MCLR) is a kind of toxins produced by some species of harmful cyanobacteria and more and more attention has been paid to it. Biodegradation has been extensively investigated and recognized to be a cost-efficient and environmentally benign method for MC clean-up. In order to further research the growth characteristics of str ...
DOI:
10.1007/s13213-019-01510-6

9. Browning reduces the availability—but not the transfer—of essential fatty acids in temperate lakes

Author:
Senar, Oscar E.; Creed, Irena F.; Strandberg, Ursula; Arts, Michael T.
Source:
Freshwater biology 2019 v.64 no.12 pp. 2107-2119
ISSN:
0046-5070
Subject:
Ciliophora; Cladocera; Copepoda; Cyanobacteria; biomass; community structure; dissolved organic carbon; docosahexaenoic acid; eicosapentaenoic acid; essential fatty acids; food webs; lakes; nutrient requirements; nutrients; phytoplankton; primary productivity; seston; total phosphorus; zooplankton; Ontario
Abstract:
... Atmospheric changes are leading to the browning of northern lakes (i.e. increases in catchment‐derived dissolved organic matter [DOM]), consequently altering phytoplankton biomass and community composition. We hypothesised that lake browning and the concurrent increase in nutrients drive a shift towards greater cyanobacteria biomass. We further hypothesised that, as a consequence of this shift in ...
DOI:
10.1111/fwb.13399

10. Comparative studies of phytoplankton compositions as a response of water quality at North El-Manzala Lake, Egypt

Author:
Deyab, M. A.; Abu Ahmed, S. E.; Ward, F. M. E.
Source:
International journal of environmental science and technology 2019 v.16 no.12 pp. 8557-8572
ISSN:
1735-1472
Subject:
Bacillariophyta; Cyanobacteria; alkalinity; ammonia; biomass; comparative study; fish; lakes; nitrates; pH; phytoplankton; plant density; silica; summer; surface water; water quality; water temperature; winter; Egypt
Abstract:
... El-Manzala Lake represents one of the most economical and valuable fish sources lakes in Egypt. This study aims to study the impact of physical and chemical properties of water on phytoplankton communities in North El-Manzala Lake. The number and biomass of phytoplankton, as well as physicochemical characteristics of surface water at the seven sites (Al-Baghdadi, Shatta, El-Deiba, Abo El-Ross, El ...
DOI:
10.1007/s13762-019-02409-0

11. Continuous nanosecond pulsed electric field treatments foster the upstream performance of Chlorella vulgaris-based biorefinery concepts

Author:
Haberkorn, Iris; Buchmann, Leandro; Hiestand, Michèle; Mathys, Alexander
Source:
Bioresource technology 2019 v.293 pp. 122029
ISSN:
0960-8524
Subject:
Chlorella vulgaris; Cyanobacteria; biomass production; biorefining; carbon; cell proliferation; developmental stages; industry; microalgae; prokaryotic cells; protein content; pulsed electric fields; raw materials; supply chain
Abstract:
... Nanosecond pulsed electric field treatment (nsPEF) is an innovative, technology-driven, and resource-efficient approach to foster the upstream performance of microalgae-based biorefinery concepts to transform microalgae into economic more viable raw materials for the biobased industry. A processing window applying three treatments of 100 ns, 5 Hz, and 10 kV cm⁻¹ to industrially relevant phototroph ...
DOI:
10.1016/j.biortech.2019.122029

12. Effects of an aluminum-based chemical remediator on the cyanobacteria population: a study in the northeast of Brazil

Author:
Guimarães Neto, José Osmar Andrade; Luz, Lafayette Dantas; Aguiar Junior, Terencio Rebello
Source:
Environmental monitoring and assessment 2019 v.191 no.12 pp. 743
ISSN:
0167-6369
Subject:
Cyanobacteria; flowering; microcystins; monitoring; phosphorus; pollution; rivers; sanitation; saxitoxins; statistical analysis; Brazil
Abstract:
... Water sources destined to human supply are increasingly threatened worldwide due to various sources of pollution, either point or diffuse. In this sense, the objective of this work was to evaluate the efficiency of an aluminum-based chemical remediator in the Joanes River. An statistical analysis of physical, chemical, biological, and hydraulic monitoring data was performed relying on a 2013–2018 ...
DOI:
10.1007/s10661-019-7926-x

13. Far-red light acclimation in diverse oxygenic photosynthetic organisms

Author:
Wolf, Benjamin M.; Blankenship, Robert E.
Source:
Photosynthesis research 2019 v.142 no.3 pp. 349-359
ISSN:
0166-8595
Subject:
Cyanobacteria; acclimation; algae; autotrophs; chlorophyll; crop yield; crops; eukaryotic cells; far-red light; leaves; photons; photosynthesis; phycobilisome; pigments; prokaryotic cells; wavelengths
Abstract:
... Oxygenic photosynthesis has historically been considered limited to be driven by the wavelengths of visible light. However, in the last few decades, various adaptations have been discovered that allow algae, cyanobacteria, and even plants to utilize longer wavelength light in the far-red spectral range. These adaptations provide distinct advantages to the species possessing them, allowing the effe ...
DOI:
10.1007/s11120-019-00653-6

14. Fatty Acids to Quantify Phytoplankton Functional Groups and Their Spatiotemporal Dynamics in a Highly Turbid Estuary

Author:
Cañavate, José-Pedro; van Bergeijk, Stefanie; Giráldez, Inmaculada; González-Ortegón, Enrique; Vílas, César
Source:
Estuaries and coasts 2019 v.42 no.8 pp. 1971-1990
ISSN:
1559-2723
Subject:
Bacillariophyceae; Cyanobacteria; community structure; data collection; estuaries; factor analysis; fatty acids; light intensity; moieties; multivariate analysis; nutrients; phytoplankton; pigments; river flow; rivers; salinity; seston; water temperature
Abstract:
... Phytoplankton community composition expresses estuarine functionality and its assessment can be improved by implementing novel quantitative fatty acid–based procedures. Fatty acids have similar potential to pigments for quantifying phytoplankton functional groups but have been far less applied. A recently created dataset containing vast information on fatty acids of phytoplankton taxonomic groups ...
DOI:
10.1007/s12237-019-00629-8

15. Gut microbiome composition in the Hispanic Community Health Study/Study of Latinos is shaped by geographic relocation, environmental factors, and obesity

Author:
Kaplan, Robert C.; Wang, Zheng; Usyk, Mykhaylo; Sotres-Alvarez, Daniela; Daviglus, Martha L.; Schneiderman, Neil; Talavera, Gregory A.; Gellman, Marc D.; Thyagarajan, Bharat; Moon, Jee-Young; Vázquez-Baeza, Yoshiki; McDonald, Daniel; Williams-Nguyen, Jessica S.; Wu, Michael C.; North, Kari E.; Shaffer, Justin; Sollecito, Christopher C.; Qi, Qibin; Isasi, Carmen R.; Wang, Tao; Knight, Rob; Burk, Robert D.
Source:
Genome biology 2019 v.20 no.1 pp. 219
ISSN:
1474-760X
Subject:
Acidaminococcus; Bacteroides; Coriobacteriaceae; Cyanobacteria; Hispanics; Latinos; Megasphaera; Oscillospira; Prevotella; Victivallaceae; bacteria; childhood; community health; cross-sectional studies; environmental factors; feces; fungi; genes; internal transcribed spacers; intestinal microorganisms; lifestyle; microbiome; obesity; ribosomal DNA; ribosomal RNA; sequence analysis; species diversity; Latin America; United States
Abstract:
... BACKGROUND: Hispanics living in the USA may have unrecognized potential birthplace and lifestyle influences on the gut microbiome. We report a cross-sectional analysis of 1674 participants from four centers of the Hispanic Community Health Study/Study of Latinos (HCHS/SOL), aged 18 to 74 years old at recruitment. RESULTS: Amplicon sequencing of 16S rRNA gene V4 and fungal ITS1 fragments from self- ...
DOI:
10.1186/s13059-019-1831-z

16. High heavy metal load does not inhibit nitrogen fixation in moss-cyanobacteria associations

Author:
Akther, Hasna; Rousk, Kathrin
Source:
Ecotoxicology 2019 v.28 no.10 pp. 1169-1176
ISSN:
0963-9292
Subject:
Cyanobacteria; Pleurozium schreberi; boreal forests; copper; ecological function; ecosystems; heavy metals; iron; lead; mosses and liverworts; nitrogen; nitrogen fixation; physiology; pollution; smelters; tundra; zinc; Sweden
Abstract:
... Nitrogen (N₂) fixation by moss-associated cyanobacteria is one of the main sources of new N input in pristine ecosystems such as boreal forests and arctic tundra. Given the non-vascular physiology of mosses, they are especially sensitive to e.g. increased N input and heavy metal deposition. While the effects of increased N input on moss-associated N₂ fixation has been comprehensively assessed, har ...
DOI:
10.1007/s10646-019-02127-w

17. Hydrothermal pretreatment of salvaged cyanobacteria and use of pretreated medium for cultivating Scenedesmus obliquus

Author:
Wang, Ruochen; Zhu, Wei; Hu, Siyuan; Feng, Ganyu; Xue, Zongpu; Chen, Huaimin
Source:
Bioresource technology 2019 v.294 pp. 122120
ISSN:
0960-8524
Subject:
Cyanobacteria; Scenedesmus obliquus; culture media; hot water treatment; microalgae; oils; oxidation; slurries
Abstract:
... This work studied the hydrothermal Pretreatment of Salvaged Cyanobacteria and used the pretreated slurry as medium for cultivating Scenedesmus obliquus. The cyanobacterial slurry was pretreated by chemical oxidation, hydrothermal treatment and hydrothermal oxidation, and then the cultivation experiment of oil-producing microalgae (Scenedesmus obliquus) was carried out. The results showed that hydr ...
DOI:
10.1016/j.biortech.2019.122120

18. Implementation of the Water Framework Directive: Lessons Learned and Future Perspectives for an Ecologically Meaningful Classification Based on Phytoplankton of the Status of Greek Lakes, Mediterranean Region

Author:
Moustaka-Gouni, Maria; Sommer, Ulrich; Economou-Amilli, Athena; Arhonditsis, George B.; Katsiapi, Matina; Papastergiadou, Eva; Kormas, Konstantinos A.; Vardaka, Elisabeth; Karayanni, Hera; Papadimitriou, Theodoti
Source:
Environmental management 2019 v.64 no.6 pp. 675-688
ISSN:
0364-152X
Subject:
Cyanobacteria; ancient lakes; compliance; normal values; phytoplankton; water quality; Cyprus; Greece; Mediterranean region; Portugal; Spain
Abstract:
... The enactment of the Water Framework Directive (WFD) initiated scientific efforts to develop reliable methods for comparing prevailing lake conditions against reference (or nonimpaired) states, using the state of a set biological elements. Drawing a distinction between impaired and natural conditions can be a challenging exercise. Another important aspect is to ensure that water quality assessment ...
DOI:
10.1007/s00267-019-01226-y

19. Is Karenia brevis really a low-light-adapted species?

Author:
Tilney, Charles L.; Shankar, Sugandha; Hubbard, Katherine A.; Corcoran, Alina A.
Source:
Harmful algae 2019 v.90 pp. 101709
ISSN:
1568-9883
Subject:
Bacillariophyceae; Cyanobacteria; Karenia brevis; case studies; models; neurotoxicity; photons; photosynthesis; phytoplankton; poisonous algae; prediction; summer; water temperature; winter; Florida; Gulf of Mexico
Abstract:
... Despite nearly annual blooms of the neurotoxic dinoflagellate Karenia brevis (Davis) G. Hansen and Moestrup in the Gulf of Mexico, defining the suite of biological traits that explain its proliferation has remained challenging. Studies have described K. brevis as a low-light-adapted species, incapable of sustaining growth under high light, which is at odds with observed surface aggregations someti ...
DOI:
10.1016/j.hal.2019.101709

20. Microbial communities involved in the methane cycle in the near-bottom water layer and sediments of the meromictic subarctic Lake Svetloe

Author:
Kadnikov, Vitaly V.; Savvichev, Alexander S.; Mardanov, Andrey V.; Beletsky, Alexey V.; Merkel, Alexander Y.; Ravin, Nikolai V.; Pimenov, Nikolai V.
Source:
Antonie van Leeuwenhoek 2019 v.112 no.12 pp. 1801-1814
ISSN:
0003-6072
Subject:
Chlorobi; Chloroflexi; Cyanobacteria; Methanomicrobiales; Methanosaetaceae; autotrophs; coenzyme-B sulfoethylthiotransferase; delta-Proteobacteria; genes; high-throughput nucleotide sequencing; lakes; melting; methane; methanogens; methanotrophs; microbial communities; mineralization; organic matter; oxidation; permafrost; ribosomal RNA; sediments; Arctic region
Abstract:
... Although arctic and subarctic lakes are important sources of methane, the emission of which will increase due to the melting of permafrost, the processes related to the methane cycle in such environments are far from being comprehensively understood. Here we studied the microbial communities in the near-bottom water layer and sediments of the meromictic subarctic Lake Svetloe using high-throughput ...
DOI:
10.1007/s10482-019-01308-1