globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gbi.12266
Scopus记录号: 2-s2.0-85031508941
论文题名:
Microbial diversity and iron oxidation at Okuoku-hachikurou Onsen, a Japanese hot spring analog of Precambrian iron formations
作者: Ward L.M.; Idei A.; Terajima S.; Kakegawa T.; Fischer W.W.; McGlynn S.E.
刊名: Geobiology
ISSN: 1472-4677
EISSN: 1472-4669
出版年: 2017
卷: 15, 期:6
起始页码: 817
结束页码: 835
语种: 英语
英文关键词: banded iron formation ; Gallionella ; iron metabolism ; lithotrophy ; photoferrotrophy ; Proterozoic ; thermophile
Scopus关键词: aragonite ; banded iron formation ; cyanobacterium ; genetic analysis ; iron ; metabolism ; microbial community ; oxidation ; Precambrian ; precipitation (chemistry) ; Proterozoic ; species diversity ; thermal spring ; thermophily ; Akita ; Honshu ; Japan ; Tohoku ; Cyanobacteria ; Gallionella ; Gallionellaceae
Scopus学科分类: Earth and Planetary Sciences: General Earth and Planetary Sciences ; Environmental Science: General Environmental Science ; Agricultural and Biological Sciences: Ecology, Evolution, Behavior and Systematic
英文摘要: Banded iron formations (BIFs) are rock deposits common in the Archean and Paleoproterozoic (and regionally Neoproterozoic) sedimentary successions. Multiple hypotheses for their deposition exist, principally invoking the precipitation of iron via the metabolic activities of oxygenic, photoferrotrophic, and/or aerobic iron-oxidizing bacteria. Some isolated environments support chemistry and mineralogy analogous to processes involved in BIF deposition, and their study can aid in untangling the factors that lead to iron precipitation. One such process analog system occurs at Okuoku-hachikurou (OHK) Onsen in Akita Prefecture, Japan. OHK is an iron- and CO2-rich, circumneutral hot spring that produces a range of precipitated mineral textures containing fine laminae of aragonite and iron oxides that resemble BIF fabrics. Here, we have performed 16S rRNA gene amplicon sequencing of microbial communities across the range of microenvironments in OHK to describe the microbial diversity present and to gain insight into the cycling of iron, oxygen, and carbon in this ecosystem. These analyses suggest that productivity at OHK is based on aerobic iron-oxidizing Gallionellaceae. In contrast to other BIF analog sites, Cyanobacteria, anoxygenic phototrophs, and iron-reducing micro-organisms are present at only low abundances. These observations support a hypothesis where low growth yields and the high stoichiometry of iron oxidized per carbon fixed by aerobic iron-oxidizing chemoautotrophs like Gallionellaceae result in accumulation of iron oxide phases without stoichiometric buildup of organic matter. This system supports little dissimilatory iron reduction, further setting OHK apart from other process analog sites where iron oxidation is primarily driven by phototrophic organisms. This positions OHK as a study area where the controls on primary productivity in iron-rich environments can be further elucidated. When compared with geological data, the metabolisms and mineralogy at OHK are most similar to specific BIF occurrences deposited after the Great Oxygenation Event, and generally discordant with those that accumulated before it. © 2017 John Wiley & Sons Ltd
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/85037
Appears in Collections:影响、适应和脆弱性

Files in This Item:

There are no files associated with this item.


作者单位: Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, United States; Department of Biology, Tokyo Metropolitan University, Tokyo, Japan; Department of Geosciences, Tohoku University, Sendai City, Japan; Earth-Life Science Institute, Tokyo Institute of Technology, Tokyo, Japan; Blue Marble Space Institute of Science, Seattle, WA, United States

Recommended Citation:
Ward L.M.,Idei A.,Terajima S.,et al. Microbial diversity and iron oxidation at Okuoku-hachikurou Onsen, a Japanese hot spring analog of Precambrian iron formations[J]. Geobiology,2017-01-01,15(6)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Ward L.M.]'s Articles
[Idei A.]'s Articles
[Terajima S.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Ward L.M.]'s Articles
[Idei A.]'s Articles
[Terajima S.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Ward L.M.]‘s Articles
[Idei A.]‘s Articles
[Terajima S.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.