CAS OpenIR  > 中科院上海应用物理研究所2011-2019年
Coexistence of Fe(II)- and Mn(II)-oxidizing bacteria govern the formation of deep sea umber deposits
Peng, XT; Ta, KW; Chen, S; Zhang, LJ; Xu, HC; Peng, XT (reprint author), Chinese Acad Sci, Sanya Inst Deep Sea Sci & Engn, Deep Sea Sci Div, Sanya 572000, Hainan, Peoples R China.
2015
Source PublicationGEOCHIMICA ET COSMOCHIMICA ACTA
ISSN0016-7037
Volume169Pages:200—216
Subtype期刊文献
AbstractThe genesis of umber deposits has remained controversial for several decades. Recently, microbial Fe(II) oxidation associated with low-temperature diffuse venting has been identified as a key process for the formation of umber deposits, but the exact biogeochemical mechanisms involved to the precipitation of Mn oxides in umber deposits still remain unknown. Here, we used nano secondary ion mass spectrometer, synchrotron-based X-ray absorption spectroscopy, electron microscopy, and molecular techniques to demonstrate the coexistence of two types of metal-oxidizing bacteria within deep-sea hydrothermal umber deposits at the South Mid-Atlantic Ridge, where we found unique spheroids composed of biogenic Fe oxyhydroxides and Mn oxides in the deposits. Our data show that Fe oxyhydroxides and Mn oxides are metabolic by-products of lithotrophic Fe(II)-oxidizing bacteria and heterotrophic Mn(II)-oxidizing bacteria, respectively. The hydrothermal vents fuel lithotrophic microorganisms, which constitute a trophic base that might support the activities of heterogenic Mn(II)-oxidizing bacteria. The biological origin of umber deposits shed light on the importance of geomicrobiological interaction in triggering the formation of metalliferous deposits, with important implications for the generation of submarine Mn deposits and crusts. (C) 2015 Elsevier Ltd. All rights reserved.
KeywordNortheast Pacific-ocean Iron-oxidizing Bacteria Sp Strain Sg-1 Loihi Seamount Hydrothermal Vents Mn(Ii) Oxidation Low-temperature Fuca Ridge Off-axis Fe
Indexed BySCI
Language英语
WOS IDWOS:000362975700013
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/24885
Collection中科院上海应用物理研究所2011-2019年
Corresponding AuthorPeng, XT (reprint author), Chinese Acad Sci, Sanya Inst Deep Sea Sci & Engn, Deep Sea Sci Div, Sanya 572000, Hainan, Peoples R China.
Recommended Citation
GB/T 7714
Peng, XT,Ta, KW,Chen, S,et al. Coexistence of Fe(II)- and Mn(II)-oxidizing bacteria govern the formation of deep sea umber deposits[J]. GEOCHIMICA ET COSMOCHIMICA ACTA,2015,169:200—216.
APA Peng, XT,Ta, KW,Chen, S,Zhang, LJ,Xu, HC,&Peng, XT .(2015).Coexistence of Fe(II)- and Mn(II)-oxidizing bacteria govern the formation of deep sea umber deposits.GEOCHIMICA ET COSMOCHIMICA ACTA,169,200—216.
MLA Peng, XT,et al."Coexistence of Fe(II)- and Mn(II)-oxidizing bacteria govern the formation of deep sea umber deposits".GEOCHIMICA ET COSMOCHIMICA ACTA 169(2015):200—216.
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