Methanogenic pathways and methanogen communities in the sediments from Bohai Sea

XU Xiaoqing; CHEN Ye; ZHEN Yu; MI Tiezhu; LI Jing; LIU Changling

doi:10.16562/j.cnki.0256-1492.2021101901

2022 Vol. 42, No. 3

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Article navigation > Marine Geology & Quaternary Geology > 2022 > 42(3): 50-61

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XU Xiaoqing, CHEN Ye, ZHEN Yu, MI Tiezhu, LI Jing, LIU Changling. Methanogenic pathways and methanogen communities in the sediments from Bohai Sea[J]. Marine Geology & Quaternary Geology, 2022, 42(3): 50-61. doi: 10.16562/j.cnki.0256-1492.2021101901

Citation:

XU Xiaoqing, CHEN Ye, ZHEN Yu, MI Tiezhu, LI Jing, LIU Changling. Methanogenic pathways and methanogen communities in the sediments from Bohai Sea[J]. Marine Geology & Quaternary Geology, 2022, 42(3): 50-61. doi: 10.16562/j.cnki.0256-1492.2021101901

Methanogenic pathways and methanogen communities in the sediments from Bohai Sea

1.
Key Laboratory of Marine Environment and Ecology, Ministry of Education, Ocean University of China, Qingdao 266100, China
2.
Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
3.
College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
4.
Qingdao Institute of Marine Geology, China Geological Survey, Qingdao 266237, China

More Information

Corresponding author: ZHEN Yu, zhenyu@ouc.edu.cn

Received Date: 19 October 2021

Revised Date: 09 January 2022

Publish Date: 28 June 2022

Abstract

Abstract

Mostly, the global methane emission comes from the metabolic activities of methanogens, which occurs in anaerobic environment. Based on the samples collected from typical stations in the Bohai Sea, we measured the concentrations of methane and sulfate in the sediments. The methane concentration in each sample was analyzed with different methanogenic substrates cultivation. The methanogen communities were measured by high-throughput sequencing techniques. The results indicated that the mainly methylotrophic pathway is methylotrophic methanogenesis, along with the hydrogenotrophic methanogenesis. Methane production decreased gradually with the depth increasing at the same station, and methane production rate decreased correspondingly at the same time. The archaea communities were dominated by Crenarchaeota, Asgardaeota and Nanoarchaeota, and Ca. Methanofastidiosales was the dominated methanogens. The results provide useful information for understanding the methanogenesis of methanogens in marine ecosystem.
- methanogens /
- sediment /
- methylotrophic methanogenesis /
- hydrogenotrophic methanogenesis /
- Bohai Sea

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References

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