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| 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 Publication | GEOCHIMICA ET COSMOCHIMICA ACTA
 |
| ISSN | 0016-7037 |
| Volume | 169Pages:200—216 |
| Subtype | 期刊文献 |
| Abstract | The 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. |
| Keyword | Northeast Pacific-ocean Iron-oxidizing Bacteria Sp Strain Sg-1 Loihi Seamount Hydrothermal Vents Mn(Ii) Oxidation Low-temperature Fuca Ridge Off-axis Fe |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000362975700013 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/24885 |
| Collection | 中科院上海应用物理研究所2011-2020年 |
| Corresponding Author | Peng, 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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| Coexistence of Fe(II（8632KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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