Microbes and Environments
Online ISSN : 1347-4405
Print ISSN : 1342-6311
ISSN-L : 1342-6311

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Spatially Resolved Distribution of Fe Species around Microbes at the Submicron Scale in Natural Bacteriogenic Iron Oxides
Hiroki Suga, Sakiko Kikuchi, Yasuo Takeichi, Chihiro Miyamoto, Masaaki Miyahara, Satoshi Mitsunobu, Takuji Ohigashi, Kazuhiko Mase, Kanta Ono, Yoshio Takahashi
著者情報
キーワード: iron oxides, iron speciation, bacteriogenic/biogenic iron oxides (BIOS), scanning transmission X-ray microscopy (STXM), near edge X-ray absorption fine structure (NEXAFS)
ジャーナル フリー 早期公開

論文ID: ME17009

この記事には本公開記事があります。
The final version of this article is now available: Vol. 32 (2017), No. 3 pp. 283-287
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Natural bacteriogenic iron oxides (BIOS) were investigated using local-analyzable synchrotron-based scanning transmission X-ray microscopy (STXM) with a submicron-scale resolution. Cell, cell sheath interface (EPS), and sheath in the BIOS were clearly depicted using C-, N-, and O- near edge X-ray absorption fine structure (NEXAFS) obtained through STXM measurements. Fe-NEXAFS obtained from different regions of BIOS indicated that the most dominant iron mineral species was ferrihydrite. Fe(II)- and/or Fe(III)-acidic polysaccharides accompanied ferrihydrite near the cell and EPS regions. Our STXM/NEXAFS analysis showed that Fe species change continuously between the cell, EPS, and sheath under several 10-nm scales.

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© 2017 Japanese Society of Microbial Ecology / Japanese Society of Soil Microbiology / Taiwan Society of Microbial Ecology / Japanese Society of Plant and Microbe Interactions
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Bulletin of Japanese Society of Microbial Ecology（日本微生物生態学会報）

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