1887

Abstract

Three Gram-negative, non-motile, non-spore-forming short rods (strains PB56, PB180, PB229) were isolated from soil in South Korea. Cells were orange–red in colour. Strains PB180 and PB229 contained small amounts of bacteriochlorophyll , which was not detected in strain PB56. However, all three isolates contained the genes for the photosynthetic type II reaction centre, . They contained Q-10 as the dominant quinone and C as the dominant fatty acid. The highest 16S rRNA gene sequence similarities were found to JCM 12082 (95.8 %), KCTC 2882 (95.1 %), IFO 15500 (95.1 %), DSM 14747 (94.8 %), IFO 15498 (94.7 %) and KCTC 2881 (94.6 %), as well as to Y2 and 3-2W4 (95.0–95.2 %). Phylogenetic analyses supported the assignment of strains PB56, PB180, PB229 to the genus . The novel isolates differ from all established species of the genus by their higher G+C content and the absence of straight-chain 2-hydroxy fatty acids. Based on the phylogenetic distances from species with validly published names and their phenotypic properties, the strains constitute a separate species, for which the name sp. nov. is proposed. The type strain is PB56 (=KCTC 12334=DSM 16846).

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2007-07-01
2021-04-16
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