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Diversity analysis of bacterial community compositions in sediments of urban lakes by terminal restriction fragment length polymorphism (T-RFLP).

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Zhao, Dayong Huang, Rui Zeng, Jin Yan, Wenming Wang, Jianqun Ma, Ting Wang, Meng Wu, Qinglong L.
Spatial Coverage	China
Description	Country affiliation: China Author Affiliation: Zhao D ( College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China. dyzhao@hhu.edu.cn)
Abstract	Bacteria are crucial components in lake sediments and play important role in various environmental processes. Urban lakes in the densely populated cities are often small, shallow, highly artificial and hypereutrophic compared to rural and natural lakes and have been overlooked for a long time. In the present study, bacterial community compositions in surface sediments of three urban lakes (Lake Mochou, Lake Qianhu and Lake Zixia) in Nanjing City, China, were investigated using the terminal restriction fragment length polymorphism (T-RFLP) of PCR-amplified 16S rRNA gene and clone libraries. Remarkable differences in the T-RFLP patterns were observed in different lakes or different sampling stations of the same lake. Canonical correspondence analysis indicated that total nitrogen (TN) had significant effects on bacterial community structure in the lake sediments. Chloroflexi were the most dominant bacterial group in the clone library from Lake Mochou (21.7 % of the total clones) which was partly associated with its higher TN and organic matters concentrations. However, Bacteroidetes appeared to be dominated colonizers in the sediments of Lake Zixia (20.4 % of the total clones). Our study gives a comprehensive insight into the structure of bacterial community of urban lake sediments, indicating that the environmental factors played a key role in influencing the bacterial community composition in the freshwater ecosystems.
File Format	HTM / HTML
ISSN	09593993
Issue Number	11
Volume Number	28
e-ISSN	15730972
Journal	World Journal of Microbiology and Biotechnology
Language	English
Publisher	Springer
Publisher Date	2012-11-01
Publisher Place	Germany
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Research Support, Non-u.s. Gov't Discipline Microbiology Microbiology Rna, Ribosomal, 16s Biota Molecular Sequence Data Sequence Analysis, Dna Journal Article Discipline Biotechnology Geologic Sediments Chemistry Dna, Ribosomal Polymorphism, Restriction Fragment Length Dna, Bacterial China Classification Lakes Bacteria Genetics Cities
Content Type	Text
Resource Type	Article
Subject	Physiology Medicine Applied Microbiology and Biotechnology Biotechnology

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