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Volume 63, Issue Pt_8

gen. nov., sp. nov., a ferric iron- and nitrate-reducing bacterium of the phylum ‘’ isolated from an iron-rich coastal hydrothermal field, and description of classis nov. Free

Abstract

A novel thermophilic, chemoheterotrophic, Gram-negative-staining, multicellular filamentous bacterium, designated strain 110S, was isolated from an iron-rich coastal hydrothermal field in Japan. The isolate is facultatively aerobic and chemoheterotrophic. Phylogenetic analysis using 16S rRNA gene sequences nested strain 110S in a novel class-level clone cluster of the phylum ‘’. The isolate grows by dissimilatory iron- and nitrate-reduction under anaerobic conditions, which is the first report of these abilities in the phylum ‘’. The organism is capable of growth with oxygen, ferric iron and nitrate as a possible electron acceptor, has a wide range of growth temperatures, and tolerates higher NaCl concentrations for growth compared to the other isolates in the phylum. Using phenotypic and phylogenetic data, strain 110S ( = JCM 17282 = NBRC 107679 = DSM 23922 = KCTC 23289 = ATCC BAA-2145) is proposed as the type strain of a novel species in a new genus, gen. nov., sp. nov. In addition, as strain 110S apparently constitutes a new class of the phylum ‘’ with other related uncultivated clone sequences, we propose classis nov. and the subordinate taxa ord. nov. and fam. nov.

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Funding
This study was supported by the:
  • JSPS for Young Scientists (Award 210528 and 203694)
  • The Ministry of Education, Culture, Sports, Science and Technology (Award 20248023)
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2013-08-01
2023-09-25
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Ardenticatena maritima gen. nov., sp. nov., a ferric iron- and nitrate-reducing bacterium of the phylum ‘Chloroflexi’ isolated from an iron-rich coastal hydrothermal field, and description of Ardenticatenia classis nov.
Int J Syst Evol Microbiol 63, 2992 (2013); https://doi.org/10.1099/ijs.0.046532-0
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