globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gbi.12200
Scopus记录号: 2-s2.0-84978191724
论文题名:
Crown group Oxyphotobacteria postdate the rise of oxygen
作者: Shih P.M.; Hemp J.; Ward L.M.; Matzke N.J.; Fischer W.W.
刊名: Geobiology
ISSN: 1472-4677
EISSN: 1472-4669
出版年: 2017
卷: 15, 期:1
起始页码: 19
结束页码: 29
语种: 英语
Scopus关键词: ancestry ; cyanobacterium ; divergence ; metabolism ; oxygen ; photosynthesis ; Cyanobacteria ; oxygen ; cyanobacterium ; evolution ; metabolism ; photosynthesis ; Biological Evolution ; Cyanobacteria ; Oxygen ; Photosynthesis
Scopus学科分类: Earth and Planetary Sciences: General Earth and Planetary Sciences ; Environmental Science: General Environmental Science ; Agricultural and Biological Sciences: Ecology, Evolution, Behavior and Systematic
英文摘要: The rise of oxygen ca. 2.3 billion years ago (Ga) is the most distinct environmental transition in Earth history. This event was enabled by the evolution of oxygenic photosynthesis in the ancestors of Cyanobacteria. However, long-standing questions concern the evolutionary timing of this metabolism, with conflicting answers spanning more than one billion years. Recently, knowledge of the Cyanobacteria phylum has expanded with the discovery of non-photosynthetic members, including a closely related sister group termed Melainabacteria, with the known oxygenic phototrophs restricted to a clade recently designated Oxyphotobacteria. By integrating genomic data from the Melainabacteria, cross-calibrated Bayesian relaxed molecular clock analyses show that crown group Oxyphotobacteria evolved ca. 2.0 billion years ago (Ga), well after the rise of atmospheric dioxygen. We further estimate the divergence between Oxyphotobacteria and Melainabacteria ca. 2.5–2.6 Ga, which—if oxygenic photosynthesis is an evolutionary synapomorphy of the Oxyphotobacteria—marks an upper limit for the origin of oxygenic photosynthesis. Together, these results are consistent with the hypothesis that oxygenic photosynthesis evolved relatively close in time to the rise of oxygen. © 2016 John Wiley & Sons Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/85078
Appears in Collections:影响、适应和脆弱性

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作者单位: Joint BioEnergy Institute, Emeryville, CA, United States; Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, United States; Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, United States; National Institute for Mathematical and Biological Synthesis, University of Tennessee, Knoxville, TN, United States

Recommended Citation:
Shih P.M.,Hemp J.,Ward L.M.,et al. Crown group Oxyphotobacteria postdate the rise of oxygen[J]. Geobiology,2017-01-01,15(1)
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