scholarly journals The spatial scale dependence of diazotrophic and bacterial community assembly in paddy soil

2019 ◽  
Author(s):  
Qun Gao ◽  
Yunfeng Yang ◽  
Jiajie Feng ◽  
Renmao Tian ◽  
Xue Guo ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Spatial Scale ◽  
Community Assembly ◽  
Paddy Soil ◽  
Scale Dependence

Responses of paddy soil bacterial community assembly to different long-term fertilizations in southeast China

2019 ◽  
Vol 656 ◽  
pp. 625-633 ◽  
Author(s):  
Yongjie Yu ◽  
Meng Wu ◽  
Evangelos Petropoulos ◽  
Jianwei Zhang ◽  
Jun Nie ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Community Assembly ◽  
Paddy Soil ◽  
Soil Bacterial Community ◽  
Southeast China ◽  
Soil Bacterial

scholarly journals The capacity of wastewater treatment plants drives bacterial community structure and its assembly

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Young Kyung Kim ◽  
Keunje Yoo ◽  
Min Sung Kim ◽  
Il Han ◽  
Minjoo Lee ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Community Structure ◽  
Bacterial Community ◽  
Activated Sludge ◽  
Community Assembly ◽  
Bacterial Communities ◽  
Wastewater Treatment Plants ◽  
High Capacity ◽  
Operating Conditions ◽  
Rrna Gene

Abstract Bacterial communities in wastewater treatment plants (WWTPs) affect plant functionality through their role in the removal of pollutants from wastewater. Bacterial communities vary extensively based on plant operating conditions and influent characteristics. The capacity of WWTPs can also affect the bacterial community via variations in the organic or nutrient composition of the influent. Despite the importance considering capacity, the characteristics that control bacterial community assembly are largely unknown. In this study, we discovered that bacterial communities in WWTPs in Korea and Vietnam, which differ remarkably in capacity, exhibit unique structures and interactions that are governed mainly by the capacity of WWTPs. Bacterial communities were analysed using 16S rRNA gene sequencing and exhibited clear differences between the two regions, with these differences being most pronounced in activated sludge. We found that capacity contributed the most to bacterial interactions and community structure, whereas other factors had less impact. Co-occurrence network analysis showed that microorganisms from high-capacity WWTPs are more interrelated than those from low-capacity WWTPs, which corresponds to the tighter clustering of bacterial communities in Korea. These results will contribute to the understanding of bacterial community assembly in activated sludge processing.

Responses of nitrification and bacterial community in three size aggregates of paddy soil to both of initial fertility and biochar addition

2021 ◽  
Vol 166 ◽  
pp. 104004
Author(s):  
Qiong Hou ◽  
Ting Zuo ◽  
Jian Wang ◽  
Shan Huang ◽  
Xiaojun Wang ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Paddy Soil

Response of activity, abundance, and composition of anammox bacterial community to different fertilization in a paddy soil

2018 ◽  
Vol 54 (8) ◽  
pp. 977-984 ◽  
Author(s):  
San’an Nie ◽  
Xiumei Lei ◽  
Lixia Zhao ◽  
Yi Wang ◽  
Fei Wang ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Paddy Soil

scholarly journals Phyllosphere community assembly and response to drought stress on common tropical and temperate forage grasses

2021 ◽  
Author(s):  
Emily K. Bechtold ◽  
Stephanie Ryan ◽  
Sarah E. Moughan ◽  
Ravi Ranjan ◽  
Klaus Nüsslein
Keyword(s):  
Microbial Community ◽  
Drought Stress ◽  
Bacterial Community ◽  
Community Assembly ◽  
Community Diversity ◽  
Grass Species ◽  
Severe Drought ◽  
Hormone Production ◽  
Plant Host ◽  
Bacterial Community Diversity

Grasslands represent a critical ecosystem important for global food production, soil carbon storage, and water regulation. Current intensification and expansion practices add to the degradation of grasslands and dramatically increase greenhouse gas emissions and pollution. Thus, new ways to sustain and improve their productivity are needed. Research efforts focus on the plant-leaf microbiome, or phyllosphere, because its microbial members impact ecosystem function by influencing pathogen resistance, plant hormone production, and nutrient availability through processes including nitrogen fixation. However, little is known about grassland phyllospheres and their response to environmental stress. In this study, globally dominant temperate and tropical forage grass species were grown in a greenhouse under current climate conditions and drought conditions that mimic future climate predictions to understand if (i) plant host taxa influence microbial community assembly, (ii) microbial communities respond to drought stress, and (iii) phyllosphere community changes correlate to changes in plant host traits and stress-response strategies. Community analysis using high resolution sequencing revealed Gammaproteobacteria as the dominant bacterial class, which increased under severe drought stress on both temperate and tropical grasses while overall bacterial community diversity declined. Bacterial community diversity, structure, and response to drought were significantly different between grass species. This community dependence on plant host species correlated with differences in grass species traits, which became more defined under drought stress conditions, suggesting symbiotic evolutionary relationships between plant hosts and their associated microbial community. Further understanding these strategies and the functions microbes provide to plants will help us utilize microbes to promote agricultural and ecosystem productivity in the future.

scholarly journals Bacterial community assembly from cow teat skin to ripened cheeses is influenced by grazing systems

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Marie Frétin ◽  
Bruno Martin ◽  
Etienne Rifa ◽  
Verdier-Metz Isabelle ◽  
Dominique Pomiès ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Community Assembly ◽  
Grazing Systems
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