气候变化领域集成服务门户(CCPortal): Eukaryogenesis and oxygen in Earth history

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DOI	10.1038/s41559-022-01733-y
	Eukaryogenesis and oxygen in Earth history
	Mills D.B.; Boyle R.A.; Daines S.J.; Sperling E.A.; Pisani D.; Donoghue P.C.J.; Lenton T.M.
发表日期	2022
ISSN	2397-334X
起始页码	520
结束页码	532
卷号	6 期号:5
英文摘要	The endosymbiotic origin of mitochondria during eukaryogenesis has long been viewed as an adaptive response to the oxygenation of Earth’s surface environment, presuming a fundamentally aerobic lifestyle for the free-living bacterial ancestors of mitochondria. This oxygen-centric view has been robustly challenged by recent advances in the Earth and life sciences. While the permanent oxygenation of the atmosphere above trace concentrations is now thought to have occurred 2.2 billion years ago, large parts of the deep ocean remained anoxic until less than 0.5 billion years ago. Neither fossils nor molecular clocks correlate the origin of mitochondria, or eukaryogenesis more broadly, to either of these planetary redox transitions. Instead, mitochondria-bearing eukaryotes are consistently dated to between these two oxygenation events, during an interval of pervasive deep-sea anoxia and variable surface-water oxygenation. The discovery and cultivation of the Asgard archaea has reinforced metabolic evidence that eukaryogenesis was initially mediated by syntrophic H2 exchange between an archaeal host and an α-proteobacterial symbiont living under anoxia. Together, these results temporally, spatially and metabolically decouple the earliest stages of eukaryogenesis from the oxygen content of the surface ocean and atmosphere. Rather than reflecting the ancestral metabolic state, obligate aerobiosis in eukaryotes is most probably derived, having only become globally widespread over the past 1 billion years as atmospheric oxygen approached modern levels. ? 2022, Springer Nature Limited.
语种	英语
scopus关键词	oxygen; archaeon; atmosphere; eukaryote; fossil; human; hypoxia; metabolism; Archaea; Atmosphere; Eukaryota; Fossils; Humans; Hypoxia; Oxygen
来源期刊	Nature Ecology & Evolution
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/257065
作者单位	Department of Geological Sciences, Stanford University, Stanford, CA, United States; Department of Biology, Portland State University, Portland, OR, United States; The Penn State Extraterrestrial Intelligence Center, The Pennsylvania State University, University Park, PA, United States; Global Systems Institute, University of Exeter, Exeter, United Kingdom; Bristol Palaeobiology Group, School of Earth Sciences, University of Bristol, Bristol, United Kingdom; School of Biological Sciences, University of Bristol, Bristol, United Kingdom
推荐引用方式 GB/T 7714	Mills D.B.,Boyle R.A.,Daines S.J.,et al. Eukaryogenesis and oxygen in Earth history[J],2022,6(5).
APA	Mills D.B..,Boyle R.A..,Daines S.J..,Sperling E.A..,Pisani D..,...&Lenton T.M..(2022).Eukaryogenesis and oxygen in Earth history.Nature Ecology & Evolution,6(5).
MLA	Mills D.B.,et al."Eukaryogenesis and oxygen in Earth history".Nature Ecology & Evolution 6.5(2022).