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[APPLIED SOIL ECOLOGY],卷: 146,文献号: UNSP 103365
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作者:Wang, WH (Wang, Wenhui) ; Luo, X (Luo, Xue) ; Ye, XF (Ye, Xianfeng) ; Chen, Y (Chen, Yang) ; Wang, H (Wang, Hui) ; Wang, L (Wang, Lei) ; Wang, YB (Wang, Yunbin) ; Yang, YY (Yang, Yunya) ; Li, ZK (Li, Zhoukun) ; Cao, H (Cao, Hui) 

 

题目:Predatory Myxococcales are widely distributed in and closely correlated with the bacterial community structure of agricultural land

 

刊物:APPLIED SOIL ECOLOGY,卷: 146,文献号: UNSP 103365

DOI: 10.1016/j.apsoil.2019.103365

出版年: FEB 2020

 

摘要:

Predation is commonly considered a key factor in regulating community structure or function. Although predation has been extensively explored in animals and microbial eukaryotes, predation by bacteria in agricultural land is poorly understood. Therefore, the objective was explored the community structure and abundance of predatory bacteria and their potential effects on other bacteria in agricultural land. Accordingly, six paired organic and conventional management crop soils were collected to compare typical predatory bacteria abundance information using the 16S rRNA gene high-throughput sequencing. The results revealed that 10 groups of predatory bacterial species accounted for 0.53-16.27% of the soil bacterial community. Soil pH was positively correlated with more than half of the predatory bacteria (P < 0.05, including Myxococcales). Myxococcales exhibited high abundance and widespread distribution in all of the soil samples, with a relatively uniform distribution in the three soil types. Myxococcales were significantly positively correlated with eight other predatory bacteria and with bacterial community Shannon and Abundance-based and Coverage Estimator (ACE) indices. Network analysis indicated that predatory bacteria, especially Myxococcales, co-occur with other nutrition-related bacteria. Under organic conditions, the abundance of Myxococcales significantly increased. Considering that Myxococcales have a higher adaptive potential and broader prey spectrum, we conclude that members of this bacterial order are important and active predators regulating bacterial communities in agricultural land. However, additional direct evidence is required to illustrate how Myxococcales alter bacterial community structure.

 

 

 

 

 

 

 

 


 

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