Furthermore, bacterial communities encoded with alpha-amylase (α-amylase) dominated during the initial phytoremediation stage however, bacterial communities encoded with hemicellulase and peroxidase gradually dominated as phytoremediation progressed. Heavy metal can influence the degradation of litters by altering the composition of the microbial community. Total litter carbon and total nitrogen were the key factors that influenced bacterial community structure. The alpha diversity (α-diversity) of litter bacterial community increased over as phytoremediation progressed, while total soil carbon and total litter carbon content were positively correlated to bacterial α-diversity. The Actinobacteria, Gammaproteobacteria and Alphaproteobacteria were the dominant bacteria found in the litter of the different sub-dams. We found significant differences in physical and chemical properties of soil and litter in the different sub-dams investigated. This study analyzed Imperata cylindrica litter to determine variation in bacterial community composition and function along with enzyme activity as phytoremediation progresses.
Bacterial community characteristics and enzyme activities in Imperata cylindrica litter as phytoremediation progresses in a copper tailings dam. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited. Licence This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. Shanxi Key Laboratory of Ecological Restoration on Loess Plateau, Institute of Loess Plateau, Shanxi University, Taiyuan, China DOI 10.7717/peerj.9612 Published Accepted Received Academic Editor Young-Chae Song Subject Areas Ecology, Microbiology, Environmental Contamination and Remediation Keywords Imperata cylindrica, Litter, Bacterial community, Enzyme activity, Copper tailings dam Copyright © 2020 Jia et al.
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