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Coexistence of Fe(II)- and Mn(II)-oxidizing bacteria govern the formation of deep sea umber deposits
Peng, Xiaotong1; Ta, Kaiwen1; Chen, Shun1; Zhang, Lijuan2; Xu, Hengchao1
2015-11-15
Source PublicationGEOCHIMICA ET COSMOCHIMICA ACTA
Volume169Pages:200-216
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.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.gca.2015.09.011
Indexed BySCI
Language英语
WOS KeywordNORTHEAST PACIFIC-OCEAN ; IRON-OXIDIZING BACTERIA ; SP STRAIN SG-1 ; LOIHI SEAMOUNT ; HYDROTHERMAL VENTS ; MN(II) OXIDATION ; LOW-TEMPERATURE ; FUCA RIDGE ; OFF-AXIS ; FE
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000362975700013
Citation statistics
Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.idsse.ac.cn/handle/183446/1207
Collection深海科学研究部_深海地质与地球化学研究室
Affiliation1.Chinese Acad Sci, Sanya Inst Deep Sea Sci & Engn, Deep Sea Sci Div, Sanya 572000, Hainan, Peoples R China
2.Chinese Acad Sci, Shanghai Synchrotron Radiat Facil, Shanghai Inst Appl Phys, Shanghai 219250, Peoples R China
Recommended Citation
GB/T 7714
Peng, Xiaotong,Ta, Kaiwen,Chen, Shun,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, Xiaotong,Ta, Kaiwen,Chen, Shun,Zhang, Lijuan,&Xu, Hengchao.(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, Xiaotong,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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