NDLI: Characterization of the prokaryotic diversity through a stratigraphic permafrost core profile from the Qinghai-Tibet Plateau

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Characterization of the prokaryotic diversity through a stratigraphic permafrost core profile from the Qinghai-Tibet Plateau

Content Provider	Springer Nature Link
Author	Hu, Weigang Zhang, Qi Tian, Tian Li, Dingyao Cheng, Gang Mu, Jing Wu, Qingbai Niu, Fujun An, Lizhe Feng, Huyuan
Copyright Year	2016
Abstract	Permafrost on the Qinghai-Tibet Plateau is one of the most sensitive regions to climate warming, thus characterizing its microbial diversity and community composition may be important for understanding their potential responses to climate changes. Here, we investigated the prokaryotic diversity in a 10-m-long permafrost core from the Qinghai-Tibet Plateau by restriction fragment length polymorphism analysis targeting the 16S rRNA gene. We detected 191 and 17 bacterial and archaeal phylotypes representing 14 and 2 distinct phyla, respectively. Proteobacteria was the dominant bacterial phylum, while archaeal communities were characterized by a preponderance of Thaumarchaeota. Some of prokaryotic phylotypes were closely related to characterized species involved in carbon and nitrogen cycles, including nitrogen fixation, methane oxidation and nitrification. However, the majority of the phylotypes were only distantly related to known taxa at order or species level, suggesting the potential of novel diversity. Additionally, both bacterial α diversity and community composition changed significantly with sampling depth, where these communities mainly distributed according to core horizons. Arthrobacter-related phylotypes presented at high relative abundance in two active layer soils, while the deeper permafrost soils were dominated by Psychrobacter-related clones. Changes in bacterial community composition were correlated with most measured soil variables, such as carbon and nitrogen contents, pH, and conductivity.
Starting Page	337
Ending Page	349
Page Count	13
File Format	PDF
ISSN	14310651
Journal	Extremophiles
Volume Number	20
Issue Number	3
e-ISSN	14334909
Language	English
Publisher	Springer Japan
Publisher Date	2016-03-31
Publisher Place	Tokyo
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Permafrost Bacteria Archaea Prokaryotic diversity Community structure Qinghai-Tibet Plateau Microbiology Biotechnology Biochemistry Microbial Ecology
Content Type	Text
Resource Type	Article
Subject	Medicine Molecular Medicine Microbiology

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