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

CORC > 深海科学与工程研究所 > 中国科学院深海科学与工程研究所 > 专家咨询委员会

	Coexistence of Fe(II)- and Mn(II)-oxidizing bacteria govern the formation of deep sea umber deposits
	Peng, Xiaotong1 ; Xu, Hengchao1 ; Zhang, Lijuan 2; Chen, Shun1 ; Ta, Kaiwen1
刊名	GEOCHIMICA ET COSMOCHIMICA ACTA
	2015-11-15
卷号	169 页码:200-216
DOI	10.1016/j.gca.2015.09.011
文献子类	Article
英文摘要	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.
WOS关键词	NORTHEAST PACIFIC-OCEAN ; IRON-OXIDIZING BACTERIA ; SP STRAIN SG-1 ; LOIHI SEAMOUNT ; HYDROTHERMAL VENTS ; MN(II) OXIDATION ; LOW-TEMPERATURE ; FUCA RIDGE ; OFF-AXIS ; FE
语种	英语
WOS记录号	WOS:000362975700013
内容类型	期刊论文
源URL	[http://ir.idsse.ac.cn/handle/183446/1207]
专题	专家咨询委员会深海科学研究部_深海地质与地球化学研究室
作者单位	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
推荐引用方式 GB/T 7714	Peng, Xiaotong,Xu, Hengchao,Zhang, Lijuan,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,Xu, Hengchao,Zhang, Lijuan,Chen, Shun,&Ta, Kaiwen.(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.