DOI: 10.1016/j.scitotenv.2019.135383
论文题名: Methylobacter accounts for strong aerobic methane oxidation in the Yellow River Delta with characteristics of a methane sink during the dry season
作者: Hao Q. ; Liu F. ; Zhang Y. ; Wang O. ; Xiao L.
刊名: Science of the Total Environment
ISSN: 489697
出版年: 2020
卷: 704 语种: 英语
英文关键词: Aerobic methane oxidation
; Anaerobic oxidation of methane
; Coastal wetland
; Methane sink
; Methylobacter
Scopus关键词: Atmospheric chemistry
; Drought
; Microorganisms
; Oxidation
; Wetlands
; Anaerobic oxidation of methanes
; Atmospheric methanes
; Coastal wetlands
; Methane oxidation
; Methylobacter
; Microbial community analysis
; Microbial community structures
; Representative strain
; Methane
; methane
; methane
; anoxic conditions
; atmospheric sink
; coastal wetland
; community structure
; dry season
; methane
; methanogenic bacterium
; oxic conditions
; oxidation
; anaerobic metabolism
; Article
; bacterial strain
; community structure
; controlled study
; methanotrophic bacterium
; Methylobacter
; Methylomicrobium
; microbial community
; nonhuman
; oxidation
; priority journal
; river ecosystem
; wetland
; aerobic metabolism
; bioremediation
; chemistry
; China
; metabolism
; Methylococcaceae
; microbiology
; river
; water pollutant
; China
; Shandong
; Yellow River Delta
; Methylobacter
; Methylomicrobium
; Aerobiosis
; Biodegradation, Environmental
; China
; Methane
; Methylococcaceae
; Rivers
; Water Microbiology
; Water Pollutants, Chemical
英文摘要: Recent investigations demonstrate that some coastal wetlands are atmospheric methane sinks, but the regulatory mechanisms are not clear. Here, the main pathway and operator of methane oxidation in the Yellow River Delta (YRD) wetland, a methane source in the wet season but a methane sink in the dry season, were investigated. The anaerobic oxidation of methane (AOM) and aerobic methane oxidation (AMO) abilities of wetland soil were measured, and the microbial community structure was analyzed. The experimental results showed that AMO was active throughout the year. In contrast, AOM was weak and even undetected. The microbial community analysis indicated that Methylomicrobium and Methylobacter potentially scavenged methane in oxic environments. A representative strain of Methylobacter, which was isolated from the soil, presented a strong AMO ability at high concentrations of methane and air. Overall, this study showed that active AMO performing by Methylobacter may account for methane sink in the YRD wetland during the dry season. Our research not only has determined the way in which methane sinks are formed but also identified the potential functional microbes. In particular, we confirmed the function of potential methanotroph by pure culture. Our research provides biological evidence for why some wetlands have methane sink characteristics, which may help to understand the global methane change mechanism. © 2019 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/159234
Appears in Collections: 气候变化与战略
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作者单位: Key Laboratory of Coastal Biology and Biological Resources Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266237, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Binzhou Medical University, Yantai, 264003, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China
Recommended Citation:
Hao Q.,Liu F.,Zhang Y.,et al. Methylobacter accounts for strong aerobic methane oxidation in the Yellow River Delta with characteristics of a methane sink during the dry season[J]. Science of the Total Environment,2020-01-01,704