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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
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.