曲媛媛

个人信息Personal Information

教授

博士生导师

硕士生导师

性别:女

毕业院校:大连理工大学

学位:博士

所在单位:环境学院

学科:环境工程. 环境科学

办公地点:环境学院B617室

联系方式:0411-84706250

电子邮箱:qyy@dlut.edu.cn

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

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论文类型:期刊论文

发表时间:2017-12-01

发表刊物:ISME JOURNAL

收录刊物:SCIE、PubMed、Scopus

卷号:11

期号:12

页面范围:2874-2878

ISSN号:1751-7362

摘要: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<0.008). This study quantifies how resource availability manipulations influence microbial community composition and supports the idea that rRNA operon copy number is an ecologically meaningful trait which reflects resource availability.