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Diversity and Distribution of Archaea Community along a Stratigraphic Permafrost Profile from Qinghai-Tibetan Plateau, China
Joint Authors
Wei, Shiping
Cui, Hongpeng
He, Hao
Hu, Fei
Zhu, Youhai
Su, Xin
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-11-25
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Accompanying the thawing permafrost expected to result from the climate change, microbial decomposition of the massive amounts of frozen organic carbon stored in permafrost is a potential emission source of greenhouse gases, possibly leading to positive feedbacks to the greenhouse effect.
In this study, the community composition of archaea in stratigraphic soils from an alpine permafrost of Qinghai-Tibetan Plateau was investigated.
Phylogenic analysis of 16S rRNA sequences revealed that the community was predominantly constituted by Crenarchaeota and Euryarchaeota.
The active layer contained a proportion of Crenarchaeota at 51.2%, with the proportion of Euryarchaeota at 48.8%, whereas the permafrost contained 41.2% Crenarchaeota and 58.8% Euryarchaeota, based on 16S rRNA gene sequence analysis.
OTU1 and OTU11, affiliated to Group 1.3b/MCG-A within Crenarchaeota and the unclassified group within Euryarchaeota, respectively, were widely distributed in all sediment layers.
However, OTU5 affiliated to Group 1.3b/MCG-A was primarily distributed in the active layers.
Sequence analysis of the DGGE bands from the 16S rRNAs of methanogenic archaea showed that the majority of methanogens belonged to Methanosarcinales and Methanomicrobiales affiliated to Euryarchaeota and the uncultured ZC-I cluster affiliated to Methanosarcinales distributed in all the depths along the permafrost profile, which indicated a dominant group of methanogens occurring in the cold ecosystems.
American Psychological Association (APA)
Wei, Shiping& Cui, Hongpeng& He, Hao& Hu, Fei& Su, Xin& Zhu, Youhai. 2014. Diversity and Distribution of Archaea Community along a Stratigraphic Permafrost Profile from Qinghai-Tibetan Plateau, China. Archaea،Vol. 2014, no. 2014, pp.1-11.
https://search.emarefa.net/detail/BIM-1034362
Modern Language Association (MLA)
Wei, Shiping…[et al.]. Diversity and Distribution of Archaea Community along a Stratigraphic Permafrost Profile from Qinghai-Tibetan Plateau, China. Archaea No. 2014 (2014), pp.1-11.
https://search.emarefa.net/detail/BIM-1034362
American Medical Association (AMA)
Wei, Shiping& Cui, Hongpeng& He, Hao& Hu, Fei& Su, Xin& Zhu, Youhai. Diversity and Distribution of Archaea Community along a Stratigraphic Permafrost Profile from Qinghai-Tibetan Plateau, China. Archaea. 2014. Vol. 2014, no. 2014, pp.1-11.
https://search.emarefa.net/detail/BIM-1034362
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1034362