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Title: Detection of anaerobic carbon monoxide-oxidizing thermophiles in hydrothermal environments.
Authors: Yoneda, Yasuko
Kano, Sanae I
Yoshida, Takashi  kyouindb  KAKEN_id
Ikeda, Eitaro
Fukuyama, Yuto
Omae, Kimiho
Kimura-Sakai, Shigeko
Daifuku, Takashi
Watanabe, Tetsuhiro  kyouindb  KAKEN_id  orcid (unconfirmed)
Sako, Yoshihiko  kyouindb  KAKEN_id
Author's alias: 左子, 芳彦
Keywords: carboxydotroph
carbon monoxide
carbon monoxide dehydrogenase
hot spring
Issue Date: Sep-2015
Publisher: Oxford University Press
Journal title: FEMS microbiology ecology
Volume: 91
Issue: 9
Thesis number: fiv093
Abstract: Carboxydotrophic anaerobic thermophiles have been isolated from various hydrothermal environments and are considered to be important carbon monoxide (CO) scavengers or primary producers. However, the ecological factors that influence the distribution, abundance and CO-oxidizing activities of these bacteria are poorly understood. A previous study detected the carboxydotrophic bacteria Carboxydothermus spp. in a hot spring sample and found that they constituted up to 10% of the total bacterial cells. In this study, we investigated environmental features, potential microbial CO-oxidation activities and the abundance of Carboxydothermus spp. in various hot springs to determine environmental factors that affect CO oxidizers and to see whether Carboxydothermus spp. are common in these environments. We detected potential microbial CO-oxidation activities in samples that showed relatively high values of total organic carbon, total nitrogen, oxidation-reduction potential and soil-water content. The abundance of Carboxydothermus spp. did not correlate with the presence of potential microbial CO-oxidation activities; however, Carboxydothermus spp. were detected in a wide range of environments, suggesting that these bacteria are widely distributed in spite of the relatively low population size. This study implies that thermophilic CO oxidizers occur in a wide range of environments and oxidize CO in somewhat oxidative environments rich in organic matter.
Rights: This is a pre-copyedited, author-produced PDF of an article accepted for publication in 'FEMS microbiology ecology' following peer review. The version of record [Yasuko Yoneda, Sanae I. Kano, Takashi Yoshida, Eitaro Ikeda, Yuto Fukuyama, Kimiho Omae, Shigeko Kimura-Sakai, Takashi Daifuku, Tetsuhiro Watanabe, Yoshihiko Sako. Detection of anaerobic carbon monoxide-oxidizing thermophiles in hydrothermal environments. Volume 91, Issue 9, fiv093, September 2015] is available online at:
The full-text file will be made open to the public on 28 July 2016 in accordance with publisher's 'Terms and Conditions for Self-Archiving'.
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
DOI(Published Version): 10.1093/femsec/fiv093
PubMed ID: 26223231
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