Ardenticatena maritima gen. nov., sp nov., a ferric iron- and nitrate-reducing bacterium of the phylum %26apos;Chloroflexi%26apos; isolated from an iron-rich coastal hydrothermal field, and description of Ardenticatenia classis nov.

作者：Kawaichi Satoshi; Ito Norihiro; Kamikawa Ryoma; Sugawara Tatsuya; Yoshida Takashi; Sako Yoshihiko^*

来源：International Journal of Systematic and Evolutionary Microbiology, 2013, 63: 2992-3002.

DOI：10.1099/ijs.0.046532-0

A novel thermophilic, chemoheterotrophic, Gram-negative-staining, multicellular filamentous bacterium, designated strain 110S(T), 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(T) in a novel class-level clone cluster of the phylum %26apos;Chloroflexi%26apos; The isolate grows by dissimilatory iron- and nitrate-reduction under anaerobic conditions, which is the first report of these abilities in the phylum %26apos;Chloroflexi%26apos; 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 NaCI concentrations for growth compared to the other isolates in the phylum. Using phenotypic and phylogenetic data, strain 110S(T) (=JCM 17282(T)=NBRC 107679(T)=DSM 23922(T)=KCIC 23289(T)=ATCC BAA-2145(T)) is proposed as the type strain of a novel species in a new genus, Ardenticatena maritima gen. nov., sp. nov. In addition, as strain 110S(T) apparently constitutes a new class of the phylum %26apos;Chloroflexi%26apos; with other related uncultivated clone sequences, we propose Ardenticatenia classic nov. and the subordinate taxa Ardenticatenales ord. nov. and Ardenticatenaceae fam. nov.

• 出版日期2013-8