Coexistence of Fe(II)- and Mn(II)-oxidizing bacteria govern the formation of deep sea umber deposits

doi:10.1016/j.gca.2015.09.011

	Coexistence of Fe(II)- and Mn(II)-oxidizing bacteria govern the formation of deep sea umber deposits
	Peng, Xiaotong1 ; Ta, Kaiwen1 ; Chen, Shun1 ; Zhang, Lijuan 2; Xu, Hengchao1
	2015-11-15
Source Publication	GEOCHIMICA ET COSMOCHIMICA ACTA
Volume	169 Pages:200-216
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.
Subtype	Article
WOS Headings	Science & Technology ; Physical Sciences
DOI	10.1016/j.gca.2015.09.011
Indexed By	SCI
Language	英语
WOS 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
WOS Subject	Geochemistry & Geophysics
WOS ID	WOS:000362975700013
Citation statistics	Cited Times:12[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://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
Affiliation	1.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.

Files in This Item:		Download All
File Name/Size	DocType	Version	Access	License
1-s2.0-S001670371500（8632KB）	期刊论文	作者接受稿	开放获取	CC BY-NC-SA	View Download

File name:	1-s2.0-S0016703715005402-main.pdf
Format:	Adobe PDF

If you have any objections to this item, please fill out the form below and the administrator will contact you as soon as possible.
Content:
Email：	*
Institution:
Verification Code:	Refresh

Any comments and suggestions are welcomed.
Title:	*
Content:
Email：	*
Verification Code:	Refresh

深海地质与地球化学研究室知识库