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1. Microbes require a relatively long time to recover in natural succession restoration of degraded grassland ecosystems

Author:
Zhang, Qian; Liu, Kesi; Shao, Xinqing; Li, Hui; He, Yixuan; Sirimuji,; Wang, Baojie
Source:
Ecological indicators 2021 v.129 pp. 107881
ISSN:
1470-160X
Subject:
microbial activity,   etc   ; Bacteroidetes; grasslands; meta-analysis; soil depth;     Show all 5 Subjects
Abstract:
... Using natural succession to restore degraded grassland is mainly achieved by self-adjusting the structure and relationship of the internal components of grassland ecosystems. Microorganisms play an important role in the restoration of grassland ecosystems; however, there is no systematic research summary on how microbial communities respond to natural restoration succession in degraded grasslands. ...
DOI:
10.1016/j.ecolind.2021.107881

2. The dynamics of phosphorus fractions and the factors driving phosphorus cycle in Zoige Plateau peatland soil

Author:
Luo, Ling; Ye, Haoyang; Zhang, Danhua; Gu, Ji-Dong; Deng, Ouping
Source:
Chemosphere 2021 v.278 pp. 130501
ISSN:
0045-6535
Subject:
microbial activity,   etc   ; peatlands; phosphorus; plant growth; soil depth; China;     Show all 6 Subjects
Abstract:
... Phosphorus (P) is an essential nutrient, limiting plant growth and microbial activity in many ecosystems. However, a few studies have been conducted to investigate P dynamics and the factors driving P dynamics in peatland soils. Therefore, this study chose Zoige Plateau peatland (the largest peatland in China) to reveal P dynamics and the possible driving factors through fractionating soil P and i ...
DOI:
10.1016/j.chemosphere.2021.130501

3. Effects of microorganism-mediated inoculants on humification processes and phosphorus dynamics during the aerobic composting of swine manure

Author:
Zhang, Tao; Wu, Xiaosha; Shaheen, Sabry M.; Rinklebe, Jörg; Bolan, Nanthi S.; Ali, Esmat F.; Li, Guoxue; Tsang, Daniel C.W.
Source:
Journal of hazardous materials 2021 v.416 pp. 125738
ISSN:
0304-3894
Subject:
microbial activity,   etc   ; composts; fluorescence; humification; organic matter; phosphorus; pig manure;     Show all 7 Subjects
Abstract:
... There is significant interest in the treatment of swine manure, which is a hazardous biowaste and a source of pathogenic contamination. This work investigated the effects of microorganism-mediated inoculants (MMIs) on nutrient flows related to humification or phosphorus (P) dynamics during the aerobic composting of swine manure. The impact of MMIs on microbe succession was also evaluated. The addi ...
DOI:
10.1016/j.jhazmat.2021.125738

4. Non-biodegradable microplastics in soils: A brief review and challenge

Author:
Zhang, Shaoliang; Wang, Jiuqi; Yan, Pengke; Hao, Xinhua; Xu, Bing; Wang, Wan; Aurangzeib, Muhammad
Source:
Journal of hazardous materials 2021 v.409 pp. 124525
ISSN:
0304-3894
Subject:
microbial activity,   etc   ; analytical methods; color; microplastics; photooxidation; pollution; Asia; Europe;     Show all 8 Subjects
Abstract:
... Non-biodegradable microplastics (MPs) pollution long-termly existed in soils, and was only concerned in recent years. In order to better understand MP behavior in soils, the sources, migration, distribution, biological effects, degradation and analytical methodology of non-biodegradable MPs in soils were quantificationally summarized from 170 publications based on Web of Science in 1950–2020. From ...
DOI:
10.1016/j.jhazmat.2020.124525

5. First line of defence: Skin microbiota may protect anurans from infective larval lungworms

Author:
Christian, Keith; Shine, Richard; Day, Kimberley A.; Kaestli, Mirjam; Gibb, Karen; Shilton, Catherine M.; Brown, Gregory P.
Source:
International journal for parasitology 2021 v.14 pp. 185-189
ISSN:
2213-2244
Subject:
microbial activity,   etc   ; DNA; Rhinella marina; larvae; lungworms; parasitology;     Show all 6 Subjects
Abstract:
... Functional roles of the rich microbiota of the skin are not fully understood, but include protection against microbial diseases and other environmental challenges. In experimental studies, we show that reducing the microbiota from cane toad (Rhinella marina) skin by gently wiping with absorptive gauze resulted in threefold higher rates of infection by lungworms (Rhabdias pseudosphaerocephala) foll ...
DOI:
10.1016/j.ijppaw.2021.02.014

6. The connection between aeration regimes and EPS composition in nitritation biofilm

Author:
Wang, Junjie; Jiang, Zhuwu; Wang, Weigang; Wang, Han; Zhang, Yao; Wang, Yayi
Source:
Chemosphere 2021 v.265 pp. 129141
ISSN:
0045-6535
Subject:
microbial activity,   etc   ; aeration; anaerobic ammonium oxidation; biofilm; biomass; polysaccharides; sludge;     Show all 7 Subjects
Abstract:
... The effects of aeration regimes (intermittent and continuous aeration) on nitritation performance and biofilm EPS composition were evaluated in moving bed biofilm reactors (MBBRs), and a hypothesis that the aeration regimes affect EPS composition by affecting the microbial activity and sludge discharge content was proposed. The effluent NO₂⁻/NH₄⁺ ratio corresponded to that of an anammox reaction ( ...
DOI:
10.1016/j.chemosphere.2020.129141

7. Dynamic release and transformation of metallic copper colloids in flooded paddy soil: Role of soil reducible sulfate and temperature

Author:
Xu, Hang; Xia, Bing; He, Erkai; Qiu, Rongliang; Peijnenburg, Willie J.G.M.; Qiu, Hao; Zhao, Ling; Xu, Xiaoyun; Cao, Xinde
Source:
Journal of hazardous materials 2021 v.402 pp. 123462
ISSN:
0304-3894
Subject:
microbial activity,   etc   ; copper; paddies; paddy soils; sulfates; temperature;     Show all 6 Subjects
Abstract:
... Mobile metal Cu colloids can be formed in periodically flooded paddy soils, potentially aggravating the risks to rice cultivated in these soils. Here, we investigated the formation and fate of Cu colloids in flooded soil as influenced by soil reducible sulfate and temperature. In microcosms with different initial sulfate availability (1.30, 5.34, or 7.38 mmol/kg), we found the treatments with high ...
DOI:
10.1016/j.jhazmat.2020.123462

8. Degradation of sulfadiazine and electricity generation from wastewater using Bacillus subtilis EL06 integrated with an open circuit system

Author:
Al-Ansari, Mysoon M.; Benabdelkamel, Hicham; Al-Humaid, Latifah
Source:
Chemosphere 2021 v.276 pp. 130145
ISSN:
0045-6535
Subject:
microbial activity,   etc   ; Bacillus subtilis; antibiotics; bioremediation; chemical oxygen demand; electricity; electricity generation; sulfadiazine; total phosphorus; wastewater;     Show all 10 Subjects
Abstract:
... Antibiotics are one of the emerging pollutants that have drawn increased attention in recent years. In this study simultaneous production of electricity and bioremediation of sulfadiazine from the wastewater using microbial fuel cells (MFCs) and open circuit system were analyzed. LC-MS analysis revealed decreased sulfadiazine concentration in open circuit system and closed MFC chamber. In MFCs, 12 ...
DOI:
10.1016/j.chemosphere.2021.130145

9. Enhanced performance of sulfamethoxazole degradation using Achromobacter sp. JL9 with in-situ generated biogenic manganese oxides

Author:
Liang, Dong Hui; Hu, Yongyou; Cheng, Jianhua; Chen, Yuancai
Source:
Bioresource technology 2021 v.333 pp. 125089
ISSN:
0960-8524
Subject:
microbial activity,   etc   ; Achromobacter; biodegradation; bioremediation; ecotoxicology; manganese; metabolism; oxidation; sediments; sulfamethoxazole; technology; temperature;     Show all 12 Subjects
Abstract:
... Little information is known about the relationships of in-situ generated BioMnOx and sulfamethoxazole (SMX) degradation. In this study, a novel efficient bioremediation technology was presented for simultaneous remove the nitrogen-N, SMX, and Mn(II) from water. Mn(II) can be completely oxidized with a oxidized rate of 0.071 mg/(L·h), the SMX and nitrogen-N removal ratios were 97.43% and 85.61%, re ...
DOI:
10.1016/j.biortech.2021.125089

10. Remediation of saline-sodic soil by plant microbial desalination cell

Author:
Han, Xiaoyu; Qu, Youpeng; Li, Da; Qiu, Ye; Yu, Yanlig; Feng, Yujie
Source:
Chemosphere 2021 v.277 pp. 130275
ISSN:
0045-6535
Subject:
microbial activity,   etc   ; Geobacter; absorption; anodes; bioremediation; desalination; electric potential difference; electrochemistry; pH; saline sodic soils;     Show all 10 Subjects
Abstract:
... Saline-sodic soil is widely distributed around the world and has induced severe impacts on ecosystems and agriculture. Plant microbial desalination cell (PMDC) and soil microbial desalination cell (SMDC) were constructed to migrate excessive salt in the soil in this study. Compared with SMDC, PMDCs generated higher voltage ranging from 150 mV to 410 mV (500Ω) and the maximum power density reached ...
DOI:
10.1016/j.chemosphere.2021.130275

11. Short communication: Saliva and salivary components affect goat rumen fermentation in short-term batch incubations

Author:
Palma-Hidalgo, J.M.; Belanche, A.; Jiménez, E.; Martín-García, A.I.; Newbold, C.J.; Yáñez-Ruiz, D.R.
Source:
Animal 2021 v.15 no.7 pp. 100267
ISSN:
1751-7311
Subject:
microbial activity,   etc   ; autoclaving; bicarbonates; butyrates; fermentation; goats; metabolites; propionic acid; rumination; saliva;     Show all 10 Subjects
Abstract:
... The research about the role of saliva in ruminants has been mainly focused on its buffering capacity together with facilitation of the rumination process. However, the role of salivary bioactive components on modulating the activity of the rumen microbiota has been neglected until recently. This study developed an in vitro approach to assess the impact of different components in saliva on rumen mi ...
DOI:
10.1016/j.animal.2021.100267

12. The effects of biochar addition on soil physicochemical properties: A review

Author:
Zhang, Yafu; Wang, Jinman; Feng, Yu
Source:
Catena 2021 v.202 pp. 105284
ISSN:
0341-8162
Subject:
microbial activity,   etc   ; adsorbents; biochar; catalysts; catenas; energy; heavy metals; ion exchange; land use; pollution; soil amendments;     Show all 11 Subjects
Abstract:
... Excessive land use has a series consequences on the degradation of land function and exerts tremendous pressure on the ecological environment. Farming, mining, and heavy metal pollution have resulted in many negative effects on soils. Biochar has become a hot research topic in the fields of agriculture, environment, and energy as an environmentally friendly soil improver in recent years. The appli ...
DOI:
10.1016/j.catena.2021.105284

13. Hydrostatic pressure influence activity and assembly of bacterial communities in reservoir sediments

Author:
Wu, Hainan; Li, Yi; Zhang, Wenlong; Niu, Lihua; Gao, Yu; Hui, Cizhang; Bertilsson, Stefan
Source:
Freshwater biology 2021 v.66 no.6 pp. 1049-1059
ISSN:
0046-5070
Subject:
microbial activity,   etc   ; bioreactors; carbon dioxide; community structure; genes; hydrostatic pressure; limnology; metabolism; organic matter; sediments;     Show all 10 Subjects
Abstract:
... Reservoir sediments are subjected to highly variable hydrostatic pressures, but little is known about the direct impacts of this environmental variable on microbial communities and biogeochemical processes mediated by microbes in the numerous deep reservoirs (>100 m) scattered across our planet. To address this gap, the organic matter degradation and community assembly of sediment bacteria were st ...
DOI:
10.1111/fwb.13697

14. Promotion of polylactic acid biodegradation by a combined addition of PLA-degrading bacterium and nitrogen source under submerged and soil burial conditions

Author:
Boonluksiri, Yeiangchart; Prapagdee, Benjaphorn; Sombatsompop, Narongrit
Source:
Polymer degradation and stability 2021 v.188 pp. 109562
ISSN:
0141-3910
Subject:
microbial activity,   etc   ; Pseudomonas geniculata; bacteria; bioaugmentation; biodegradation; nitrogen; polylactic acid; sludge; soil; wastewater; weight loss;     Show all 11 Subjects
Abstract:
... This article investigated an efficient process for accelerating polylactic acid (PLA) biodegradation. A combined use of bioaugmentation and biostimulation to faster PLA biodegradation under submerged and soil burial conditions was studied. Under submerged condition, PLA films in basal salt medium were inoculated with either Pseudomonas geniculata WS3 (PLA-degrading bacterium), manure extract, or w ...
DOI:
10.1016/j.polymdegradstab.2021.109562

15. The role of bacterial communities in shaping Cd-induced hormesis in ‘living’ soil as a function of land-use change

Author:
Fan, Diwu; Wang, Shengyan; Guo, Yanhui; Liu, Jian; Agathokleous, Evgenios; Zhu, Yongli; Han, Jiangang
Source:
Journal of hazardous materials 2021 v.409 pp. 124996
ISSN:
0304-3894
Subject:
microbial activity,   etc   ; ; alkaline phosphatase; forest plantations; forests; grasslands; hormesis; land use change; plasticity; soil microorganisms; wheat;     Show all 11 Subjects
Abstract:
... Bacterial communities and soil physicochemical properties shape soil enzymes activities. However, how environmental factors and bacterial communities affect the relationship between increasing doses of soil pollutants and soil alkaline phosphatase (ALP), an index of soil microbiota activity, remains poorly understood. In this study, we investigated the response of soil ALP to 13 doses of Cd (0 and ...
DOI:
10.1016/j.jhazmat.2020.124996

16. Degradation of ofloxacin by a manganese-oxidizing bacterium Pseudomonas sp. F2 and its biogenic manganese oxides

Author:
Li, Kangjie; Xu, Anlin; Wu, Donghong; Zhao, Siyan; Meng, Tong; Zhang, Yongjun
Source:
Bioresource technology 2021 v.328 pp. 124826
ISSN:
0960-8524
Subject:
microbial activity,   etc   ; Pseudomonas; aquatic environment; bacteria; ethanol; heat; manganese; ofloxacin; technology; toxicity;     Show all 10 Subjects
Abstract:
... Fluoroquinolone antibiotics like ofloxacin (OFL) have been frequently detected in the aquatic environment. Recently manganese-oxidizing bacteria (MOB) have attracted research efforts on the degradation of recalcitrant pollutants with the aid of their biogenic manganese oxides (BioMnOx). Herein, the degradation of OFL with a strain of MOB (Pseudomonas sp. F2) was investigated for the first time. It ...
DOI:
10.1016/j.biortech.2021.124826

17. Ecological relevance of high and low nucleic acid content bacteria in a monsoon influenced tropical estuary: Implications on the β-Glucosidase activity

Author:
Eswaran, Ranjith; Khandeparker, Lidita
Source:
Acta oecologica 2021 v.110 pp. 103697
ISSN:
1146-609X
Subject:
microbial activity,   etc   ; ; carbohydrates; estuaries; fluorescence; monsoon season; nucleic acids; organic matter; phylogeny; plate count; rain; India;     Show all 12 Subjects
Abstract:
... Heterotrophic bacteria that differ in their nucleic acid content are frequently observed in aquatic environments. However, their relevance and roles in organic matter utilization in monsoon-influenced tropical estuaries have not been addressed. Transparent exopolymer particles (TEP) are one of the carbohydrate rich organic matter forms in aquatic environments, and their breakdown is mostly mediate ...
DOI:
10.1016/j.actao.2020.103697

18. Fungi are more sensitive than bacteria to drainage in the peatlands of the Zoige Plateau

Author:
Xue, Dan; Liu, Teng; Chen, Huai; Liu, Junxia; Hu, Ji; Liu, Liangfeng
Source:
Ecological indicators 2021 v.124 pp. 107367
ISSN:
1470-160X
Subject:
microbial activity,   etc   ; carbon; dissolved inorganic nitrogen; drainage; drawdown; ecosystems; fungi; peatlands; soil; water table;     Show all 10 Subjects
Abstract:
... The peatlands of the Zoige Plateau are an important global carbon source that is currently under threat as a result of drainage for grazing. How drainage affects the microbial diversity and activity in peatlands is unclear. This study examined the response of microbial communities at two sites to short-term drainage (3 years) and long-term drainage (48 years) in combination with three different wa ...
DOI:
10.1016/j.ecolind.2021.107367

19. Microbial activity and metamitron degrading microbial communities differ between soil and water-sediment systems

Author:
Wang, S.; Miltner, A.; Muskus, A.M.; Nowak, K.M.
Source:
Journal of hazardous materials 2021 v.408 pp. 124293
ISSN:
0304-3894
Subject:
microbial activity,   etc   ; Actinobacteria; biomarkers; metamitron; mineralization; necromass; phospholipid fatty acids; sediments; soil; soil respiration;     Show all 10 Subjects
Abstract:
... The herbicide metamitron is frequently detected in the environment, and its degradation in soil differs from that in aquatic sediments. In this study, we applied ¹³C₆-metamitron to investigate the differences in microbial activity, metamitron mineralization and metamitron degrading microbial communities between soil and water-sediment systems. Metamitron increased soil respiration, whereas it supp ...
DOI:
10.1016/j.jhazmat.2020.124293

20. Analysis of the biodegradation performance and biofouling in a halophilic MBBR-MBR to improve the treatment of disinfected saline wastewater

Author:
Xu, Mengchang; Zhou, Wenhu; Chen, Xuncai; Zhou, Ying; He, Binsheng; Tan, Songwen
Source:
Chemosphere 2021 v.269 pp. 128716
ISSN:
0045-6535
Subject:
microbial activity,   etc   ; bioactive properties; biodegradation; biofilm; biofouling; fluorescence emission spectroscopy; half life; membrane bioreactors; salinity; wastewater;     Show all 10 Subjects
Abstract:
... Disinfectant-containing wastewaters have been generated from many places, including marine industries. The synthetic NaClO-containing wastewaters have been effectively treated in a saline MBBR-MBR (moving bed biofilm reactor & membrane bioreactor) system containing marine microorganisms. A low concentration of NaCl (below 100 mg/L) is not enough to kill the microorganisms, but can affect their bio ...
DOI:
10.1016/j.chemosphere.2020.128716