Diversity, abundance and distribution of amoA-encoding archaea in deep-sea methane seep sediments of the Okhotsk Sea

Hongyue Dang; Xi-Wu Luan; Ruipeng Chen; Xiaoxia Zhang; Lizhong Guo; Martin G Klotz

doi:10.1111/j.1574-6941.2010.00870.x

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Diversity, abundance and distribution of amoA-encoding archaea in deep-sea methane seep sediments of the Okhotsk Sea

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Diversity, abundance and distribution of amoA-encoding archaea in deep-sea methane seep sediments of the Okhotsk Sea

Hongyue Dang, Xi-Wu Luan, Ruipeng Chen, Xiaoxia Zhang, Lizhong Guo and Martin G Klotz

FEMS microbiology ecology, Vol.72(3), pp.370-385

06/01/2010

DOI: https://doi.org/10.1111/j.1574-6941.2010.00870.x

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https://hdl.handle.net/2376/109775

PMID: 20402778

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Abstract

Okhotsk Sea

gas hydrate

methane seep

encoding archaea

deep-sea sediment

ammonia-oxidizing archaea

Abstract The ecological characteristics of amoA-encoding archaea (AEA) in deep-sea sediments are largely unsolved. This paper aimed to study the diversity, structure, distribution and abundance of the archaeal community and especially its AEA components in the cold seep surface sediments of the Okhotsk Sea, a marginal sea harboring one of the largest methane hydrate reservoirs in the world. Diverse archaeal 16S rRNA gene sequences were identified, with the majority being related to sequences from other cold seep and methane-rich sediment environments. However, the AEA diversity and abundance were quite low as revealed by amoA gene analyses. Correlation analysis indicates that the abundance of the archaeal amoA genes was correlated with the sediment organic matter content. Thus, it is possible that the amoA-carrying archaea here might utilize organic matter for a living. The affiliation of certain archaeal amoA sequences to the GenBank sequences originally obtained from deep-sea hydrothermal vent environments indicated that the related AEA either have a wide range of temperature adaptation or they have a thermophilic evolutionary history in the modern cold deep-sea sediments of the Okhotsk Sea. The dominance of ammonia-oxidizing bacteria over AEA may indicate that bacteria play a significant role in nitrification in the Okhotsk Sea cold seep sediments.

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Title: Diversity, abundance and distribution of amoA-encoding archaea in deep-sea methane seep sediments of the Okhotsk Sea
Creators: Hongyue Dang - State Key Laboratory of Heavy Oil Processing and Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, China
Xi-Wu Luan - Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
Ruipeng Chen - State Key Laboratory of Heavy Oil Processing and Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, China
Xiaoxia Zhang - State Key Laboratory of Heavy Oil Processing and Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, China
Lizhong Guo - College of Life Sciences, Qingdao Agricultural University, Qingdao, China
Martin G Klotz - State Key Laboratory of Heavy Oil Processing and Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, China
Publication Details: FEMS microbiology ecology, Vol.72(3), pp.370-385
Academic Unit: Molecular Biosciences, School of
Publisher: Blackwell Publishing Ltd; Oxford, UK
Identifiers: 99900547200301842
Language: English
Resource Type: Journal article