Dysgonomonas oryzarvi sp. nov., isolated from a microbial fuel cell
2012
Kodama, Yumiko | Shimoyama, Takefumi | Watanabe, Kazuya
A Gram-stain-negative, non-motile and coccoid- to short-rod-shaped bacterium, designated strain Dy73T, was isolated from a microbial fuel cell that had been inoculated with rice paddy field soil and fed starch, peptone and fish extract as fuels. On the basis of 16S rRNA gene sequence phylogeny, strain Dy73T was affiliated with the genus Dysgonomonas in the phylum Bacteroidetes, and most closely related to Dysgonomonas mossii CCUG 43457T with a 16S rRNA gene sequence similarity value of 99.7 %. However, the DNA–DNA relatedness value between strain Dy73T and Dysgonomonas mossii CCUG 43457T was 34.8 %. In addition, strain Dy73T was found to be different from other recognized species of the genus Dysgonomonas in taxonomically important traits, including habitat, DNA G+C content, bile resistance and fatty-acid composition. Based on these characteristics, strain Dy73T represents a novel species of the genus Dysgonomonas for which the name Dysgonomonas oryzarvi sp. nov. is proposed. The type strain is Dy73T ( = JCM 16859T = KCTC 5936T).
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