NDLI: Fine-scale vertical distribution of bacteria in the East Pacific deep-sea sediments determined via 16S rRNA gene T-RFLP and clone library analyses

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Fine-scale vertical distribution of bacteria in the East Pacific deep-sea sediments determined via 16S rRNA gene T-RFLP and clone library analyses

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Fine-scale vertical distribution of bacteria in the East Pacific deep-sea sediments determined via 16S rRNA gene T-RFLP and clone library analyses

Content Provider	Springer Nature Link
Author	Dang, Hongyue Li, Jing Chen, Mingna Li, Tiegang Zeng, Zhigang Yin, Xuebo
Copyright Year	2008
Abstract	Although the deep-sea sediments harbor diverse and novel bacteria with important ecological and environmental functions, a comprehensive view of their community characteristics is still lacking, considering the vast area and volume of the deep-sea sedimentary environments. Sediment bacteria vertical distribution and community structure were studied of the E272 site in the East Pacific Ocean with the molecular methods of 16S rRNA gene T-RFLP (terminal restriction fragment length polymorphism) and clone library analyses. Layered distribution of the bacterial assemblages was detected by both methods, indicating that the shallow sediments (40 cm in depth) harbored a diverse and distinct bacterial composition with fine-scale spatial heterogeneity. Substantial bacterial diversity was detected and nine major bacterial lineages were obtained, including Acidobacteria, Actinobacteria, Bacteroidetes, Chloroflexi, Nitrospirae, Planctomycetes, Proteobacteria, and the candidate divisions OP8 and TM6. Three subdivisions of the Proteobacteria presented in our libraries, including the α-, γ- and δ-Proteobacteria. Most of our sequences have low similarity with known bacterial 16S rRNA genes, indicating that these sequences may represent as-yet-uncultivated novel bacteria. Most of our sequences were related to the GenBank nearest neighboring sequences retrieved from marine sediments, especially from deep-sea methane seep, gas hydrate or mud volcano environments. Several sequences were related to the sequences recovered from the deep-sea hydrothermal vent or basalt glasses-bearing sediments, indicating that our deep-sea sampling site might be influenced to certain degree by the nearby hydrothermal field of the East Pacific Rise at 13°N.
Starting Page	179
Ending Page	188
Page Count	10
File Format	PDF
ISSN	09593993
Journal	World Journal of Microbiology and Biotechnology
Volume Number	25
Issue Number	2
e-ISSN	15730972
Language	English
Publisher	Springer Netherlands
Publisher Date	2008-10-14
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Deep-sea sediment bacteria Vertical distribution 16S rRNA gene T-RFLP ARDRA East Pacific Rise Hydrothermal vent Microbiology Environmental Engineering/Biotechnology Applied Microbiology Biochemistry Biotechnology
Content Type	Text
Resource Type	Article
Subject	Physiology Medicine Applied Microbiology and Biotechnology Biotechnology

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