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1. Microbial functional trait of rRNA operon copy numbers increases with organic levels in anaerobic digesters.

Author

Wu, Linwei, Yang, Yunfeng, Chen, Si, Jason Shi, Zhou, Zhao, Mengxin, Zhu, Zhenwei, Yang, Sihang, Qu, Yuanyuan, Ma, Qiao, He, Zhili, Zhou, Jizhong, and He, Qiang

Subjects
Bacteria, Ecology, Anaerobiosis, Gene Dosage, Phenotype, rRNA Operon, Microbiology, Biological Sciences, Technology, Environmental Sciences
Abstract

The ecological concept of the r-K life history strategy is widely applied in macro-ecology to characterize functional traits of taxa. However, its adoption in microbial communities is limited, owing to the lack of a measureable, convenient functional trait for classification. In this study, we performed an experiment of stepwise organic amendments in triplicate anaerobic digesters. We found that high resource availability significantly favored microbial r-strategists such as Bacillus spp. Incremental resource availability heightened average rRNA operon copy number of microbial community, resulting in a strong, positive correlation (r>0.74, P

Published
2017

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