GSTDTAP  > 地球科学
DOI10.1038/s41586-019-1804-0
Light-driven anaerobic microbial oxidation of manganese
Mirna Daye; Vanja Klepac-Ceraj; Mihkel Pajusalu; Sophie Rowland; Anna Farrell-Sherman; Nicolas Beukes; Nobumichi Tamura; Gregory Fournier; Tanja Bosak
2019-12-04
发表期刊Nature
出版年2019
卷号576页码:311-314
文章类型Article
语种英语
英文摘要

Oxygenic photosynthesis supplies organic carbon to the modern biosphere, but it is uncertain when this metabolism originated. It has previously been proposed1,2 that photosynthetic reaction centres capable of splitting water arose by about 3聽billion years ago on the basis of the inferred presence of manganese oxides in Archaean sedimentary rocks. However, this assumes that manganese oxides can be produced only in the presence of molecular oxygen3, reactive oxygen species4,5 or by high-potential photosynthetic reaction centres6,7. Here we show that communities of anoxygenic photosynthetic microorganisms biomineralize manganese oxides in the absence of molecular oxygen and high-potential photosynthetic reaction centres. Microbial oxidation of Mn(ii) under strictly anaerobic conditions during the Archaean eon would have produced geochemical signals identical to those used to date the evolution of oxygenic photosynthesis before the Great Oxidation Event1,2. This light-dependent process may also produce manganese oxides in the photic zones of modern anoxic water bodies and sediments.

领域地球科学 ; 气候变化 ; 资源环境
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/231901
专题地球科学
资源环境科学
气候变化
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Mirna Daye,Vanja Klepac-Ceraj,Mihkel Pajusalu,et al. Light-driven anaerobic microbial oxidation of manganese[J]. Nature,2019,576:311-314.
APA Mirna Daye.,Vanja Klepac-Ceraj.,Mihkel Pajusalu.,Sophie Rowland.,Anna Farrell-Sherman.,...&Tanja Bosak.(2019).Light-driven anaerobic microbial oxidation of manganese.Nature,576,311-314.
MLA Mirna Daye,et al."Light-driven anaerobic microbial oxidation of manganese".Nature 576(2019):311-314.
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