DOI: 10.1016/j.atmosenv.2015.05.019
Scopus记录号: 2-s2.0-84930660867
论文题名: A novel pathway of direct methane production and emission by eukaryotes including plants, animals and fungi: An overview
作者: Liu J ; , Chen H ; , Zhu Q ; , Shen Y ; , Wang X ; , Wang M ; , Peng C
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 115 起始页码: 26
结束页码: 35
语种: 英语
英文关键词: Climate change
; Greenhouse gas
; Methane budget
; Reactive oxygen species
Scopus关键词: Animals
; Budget control
; Carbon
; Carbon dioxide
; Catalyst activity
; Fungi
; Global warming
; Greenhouse gases
; Methane
; Anaerobic conditions
; Environmental stress
; Experimental evidence
; Global warming potential
; Interannual variability
; Intergovernmental panel on climate changes
; Methanogenic archaea
; Reactive oxygen species
; Climate change
; betaine
; carnitine
; cellulose
; choline
; lignin
; methane
; methionine
; pectin
; phosphatidylcholine
; reactive oxygen metabolite
; animal
; carbon dioxide
; environmental stress
; eukaryote
; fungus
; global warming
; greenhouse gas
; growth rate
; Intergovernmental Panel on Climate Change
; literature review
; methane
; oxygen
; plant
; animal
; atmospheric dispersion
; chemical structure
; decomposition
; endotoxemia
; environmental stress
; eukaryote
; fungus
; greenhouse effect
; greenhouse gas
; hypoxia
; injury
; methanogenic archaeon
; nonhuman
; plant
; precursor
; priority journal
; reperfusion injury
; Review
; temperature
; ultraviolet radiation
; Animalia
; Archaea
; Eukaryota
; Fungi
; Plantae
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: Methane (CH4 ) is a powerful greenhouse gas with a global warming potential 28 times that of carbon dioxide (CO2 ). CH4 is responsible for approximately 20% of the Earth's warming since pre-industrial times. Knowledge of the sources of CH4 is crucial due to the recent substantial interannual variability of growth rates and uncertainties regarding individual sources. The prevailing paradigm is that methanogenesis carried out by methanogenic archaea occurs primarily under strictly anaerobic conditions. However, in the past decade, studies have confirmed direct CH4 release from three important kingdoms of eukaryotes-Plantae, Animalia and Fungi-even in the presence of oxygen. This novel CH4 production pathway has been aptly termed "aerobic CH4 production" to distinguish it from the well-known anaerobic CH4 production pathway, which involves catalytic activity by methanogenic archaeal enzymes. In this review, we collated recent experimental evidence from the published literature and documented this novel pathway of direct CH4 production and emission by eukaryotes. The mechanisms involved in this pathway may be related to protective strategies of eukaryotes in response to changing environmental stresses, with CH4 a by-product or end-product during or at the end of the process(es) that originates from organic methyl-type compounds. Based on the existing, albeit uncertain estimates, plants seem to contribute less to the global CH4 budget (3-24%) compared to previous estimates (10-37%). We still lack estimates of CH4 emissions by animals and fungi. Overall, there is an urgent need to identify the precursors for this novel CH4 source and improve our understanding of the mechanisms of direct CH4 production and the impacts of environmental stresses. An estimate of this new CH4 source, which was not considered as a CH4 source by the Intergovernmental Panel on Climate Change (IPCC) (2013), could be useful for better quantitation of the global CH4 budget. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81693
Appears in Collections: 气候变化事实与影响
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作者单位: Laboratory for Ecological Forecasting and Global Change, College of Forestry, Northwest Agriculture and Forest University, Yangling, China; Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China; Faculty of Life Science and Technology, Central South University of Forestry and Technology, Changsha, Hunan, China; Reseach Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou, China; Institute of Environment Sciences, Department of Biology Sciences, University of Quebec at Montreal, Case Postale 8888, Succursale Centre-Ville, Montreal, Canada
Recommended Citation:
Liu J,, Chen H,, Zhu Q,et al. A novel pathway of direct methane production and emission by eukaryotes including plants, animals and fungi: An overview[J]. Atmospheric Environment,2015-01-01,115