干旱区生态环境知识资源中心(Arid): Resilience of methane cycle and microbial functional genes to drought and flood in an alkaline wetland: A metagenomic analysis

Arid

DOI	10.1016/j.chemosphere.2020.129034
	Resilience of methane cycle and microbial functional genes to drought and flood in an alkaline wetland: A metagenomic analysis
	Liu, Fengqin; Zhang, Yupeng; Liang, Hong; Gao, Dawen
通讯作者	Liang, H ; Gao, DW (corresponding author), Beijing Univ Civil Engn & Architecture, Ctr Urban Environm Remedeat, Beijing 100044, Peoples R China.
来源期刊	CHEMOSPHERE
ISSN	0045-6535
EISSN	1879-1298
出版年	2021
卷号	265
英文摘要	Alkaline wetlands distributed in arid or semi-arid areas are hotspots of methane (CH4) emissions. Periods of drought and flood, although regular, are stressful events encountered by methanogenic anaerobes in alkaline wetlands. To investigate the response of the CH4 cycle of alkaline wetlands to such stresses, we take Zhalong wetland as an example, then determined the CH4 flux and soil microbiomes in the wetland during wet, dry, and flooded periods. The in-situ CH4 flux in the wet period was 9.55-17.29 mg.m(-2).h(-1), but sharply degraded to 3.37-6.61 mg.m(-2).h(-1) in the dry period. It resumed to 4.51-20.80 mg.m(-2).h(-1) when the wetland was flooded again, which indicated that methanogenesis is quite resilient to drought. Syntrophic acetogenesis, and subsequently aceticlastic methanogenesis, were the dominant methanogenic pathways and resisted drought. Members belonging to Syntrophobacterales were the dominant syntrophic acetogens. They enter a viable but non-culturable (VBNC) state to resist drought. The dominant Methanosarcinales have the ability to repair reactive oxygen species damage during dry periods. The community of CH4 sink was governed by anaerobic methanotrophs, which entered a VBNC state or used repair systems to survive dry periods. This study revealed the responses of the CH4 cycle and microbial functional genes to drought and flood in alkaline wetlands. (C) 2020 Elsevier Ltd. All rights reserved.
英文关键词	Alkaline wetlands Drought Metagenomics Methane cycle Methanogenic anaerobes Oxidative stress
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000603465000030
WOS关键词	NONCULTURABLE STATE ; ANAEROBIC OXIDATION ; OXYGEN EXPOSURE ; CARBON-DIOXIDE ; MCRA GENES ; COMMUNITIES ; RESPONSES ; ARCHAEA ; NITRITE ; METHANOTROPHS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347793
作者单位	[Liu, Fengqin; Zhang, Yupeng; Gao, Dawen] Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin, Peoples R China; [Liang, Hong; Gao, Dawen] Beijing Univ Civil Engn & Architecture, Ctr Urban Environm Remedeat, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	Liu, Fengqin,Zhang, Yupeng,Liang, Hong,et al. Resilience of methane cycle and microbial functional genes to drought and flood in an alkaline wetland: A metagenomic analysis[J],2021,265.
APA	Liu, Fengqin,Zhang, Yupeng,Liang, Hong,&Gao, Dawen.(2021).Resilience of methane cycle and microbial functional genes to drought and flood in an alkaline wetland: A metagenomic analysis.CHEMOSPHERE,265.
MLA	Liu, Fengqin,et al."Resilience of methane cycle and microbial functional genes to drought and flood in an alkaline wetland: A metagenomic analysis".CHEMOSPHERE 265(2021).