Comparison of microbial taxonomic and functional shift pattern along contamination gradient

文献类型： 外文期刊

第一作者： Niu, Jiaojiao

作者： Niu, Jiaojiao;Xiao, Yunhua;Zhang, Xian;Liang, Yili;Liu, Xueduan;Yin, Huaqun;Ren, Youhua;Niu, Jiaojiao;Xiao, Yunhua;Zhang, Xian;Liang, Yili;Liu, Xueduan;Yin, Huaqun;Ren, Youhua;Huang, Wenkun;Peng, Deliang

作者机构：

关键词： Heavy metal contamination;Microbial remediation;Taxonomic and functional composition;Null model test

期刊名称：BMC MICROBIOLOGY （ 影响因子：3.605； 五年影响因子：4.283 ）

ISSN： 1471-2180

年卷期： 2016 年 16 卷

页码：

收录情况： SCI

摘要： Background: The interaction mechanism between microbial communities and environment is a key issue in microbial ecology. Microbial communities usually change significantly under environmental stress, which has been studied both phylogenetically and functionally, however which method is more effective in assessing the relationship between microbial communities shift and environmental changes still remains controversial. Results: By comparing the microbial taxonomic and functional shift pattern along heavy metal contamination gradient, we found that both sedimentary composition and function shifted significantly along contamination gradient. For example, the relative abundance of Geobacter and Fusibacter decreased along contamination gradient (from high to low), while Janthinobacterium and Arthrobacter increased their abundances. Most genes involved in heavy metal resistance (e.g., metc, aoxb and mer) showed higher intensity in sites with higher concentration of heavy metals. Comparing the two shift patterns, there were correlations between them, because functional and phylogenetic beta-diversities were significantly correlated, and many heavy metal resistance genes were derived from Geobacter, explaining their high abundance in heavily contaminated sites. However, there was a stronger link between functional composition and environmental drivers, while stochasticity played an important role in formation and succession of phylogenetic composition demonstrated by null model test. Conclusions: Overall our research suggested that the responses of functional traits depended more on environmental changes, while stochasticity played an important role in formation and succession of phylogenetic composition for microbial communities. So profiling microbial functional composition seems more appropriate to study the relationship between microbial communities and environment, as well as explore the adaptation and remediation mechanism of microbial communities to heavy metal contamination.

分类号：

  • 相关文献

[1]Phytoremediation of Zn- and Cr-Contaminated Soil Using Two Promising Energy Grasses. Li, C.,Xiao, B.,Wang, Q. H.,Yao, S. H.,Wu, J. Y.,Xiao, B.. 2014

[2]The effect of heavy metal contamination on the bacterial community structure at Jiaozhou Bay, China. Yao, Xie-Feng,Guo, Jian-hua,Zhang, Jiu-ming,Tian, Li,Zhang, Jiu-ming,Tian, Li. 2017

[3]Simulation of changes in heavy metal contamination in farmland soils of a typical manufacturing center through logistic-based cellular automata modeling. Qiu, Menglong,Liu, Liming,Wang, Qi,Li, Fangbai,Chen, Junjian,Yang, Guoyi.

[4]Evaluation of semi-arid arable soil heavy metal pollution by magnetic susceptibility in the Linfen basin of China. Yang, Pingguo,Byrne, James M.,Li, Hongjun,Shao, Hong-Bo,Shao, Hong-Bo.

作者其他论文 更多>>

微信小程序