气候变化领域集成服务门户(CCPortal): The evolving redox chemistry and bioavailability of vanadium in deep time

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DOI	10.1111/gbi.12375
	The evolving redox chemistry and bioavailability of vanadium in deep time
	Moore E.K.; Hao J.; Spielman S.J.; Yee N.
发表日期	2020
ISSN	14724677
起始页码	127
结束页码	138
卷号	18 期号:2
英文摘要	The incorporation of metal cofactors into protein active sites and/or active regions expanded the network of microbial metabolism during the Archean eon. The bioavailability of crucial metal cofactors is largely influenced by earth surface redox state, which impacted the timing of metabolic evolution. Vanadium (V) is a unique element in geo–bio-coevolution due to its complex redox chemistry and specific biological functions. Thus, the extent of microbial V utilization potentially represents an important link between the geo- and biospheres in deep time. In this study, we used geochemical modeling and network analysis to investigate the availability and chemical speciation of V in the environment, and the emergence and changing chemistry of V-containing minerals throughout earth history. The redox state of V shifted from a more reduced V(III) state in Archean aqueous geochemistry and mineralogy to more oxidized V(IV) and V(V) states in the Proterozoic and Phanerozoic. The weathering of vanadium sulfides, vanadium alkali metal minerals, and vanadium alkaline earth metal minerals were potential sources of V to the environment and microbial utilization. Community detection analysis of the expanding V mineral network indicates tectonic and redox influence on the distribution of V mineral-forming elements. In reducing environments, energetic drivers existed for V to potentially be involved in early nitrogen fixation, while in oxidizing environments vanadate ((Formula presented.)) could have acted as a metabolic electron acceptor and phosphate mimicking enzyme inhibitor. The coevolving chemical speciation and biological functions of V due to earth's changing surface redox conditions demonstrate the crucial links between the geosphere and biosphere in the evolution of metabolic electron transfer pathways and biogeochemical cycles from the Archean to Phanerozoic. © 2020 John Wiley & Sons Ltd
关键词	alkali metal alkaline earth metal bioactivity enzyme enzyme activity inhibitor metabolism microbial activity network analysis phosphate protein redox conditions reduction speciation (chemistry)vanadium
语种	英语
来源机构	Geobiology
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/133193
推荐引用方式 GB/T 7714	Moore E.K.,Hao J.,Spielman S.J.,et al. The evolving redox chemistry and bioavailability of vanadium in deep time[J]. Geobiology,2020,18(2).
APA	Moore E.K.,Hao J.,Spielman S.J.,&Yee N..(2020).The evolving redox chemistry and bioavailability of vanadium in deep time.,18(2).
MLA	Moore E.K.,et al."The evolving redox chemistry and bioavailability of vanadium in deep time".18.2(2020).