1887

Abstract

An anoxygenic, phototrophic gammaproteobacterium designated strain JA418 was isolated from a sediment sample collected from the Baitarani River, Orissa, India. The bacterium was a Gram-negative, motile rod with a single polar flagellum. Bacteriochlorophyll and rhodopin were the major photosynthetic pigments. The organism grew best at slightly alkaline pH (8–8.5) and lacked chemotrophic growth. The major fatty acids were C, C 7/C 6 and C 7. A phylogenetic tree based on 16S rRNA gene sequence analysis showed that strain JA418 clusters with species of the genus belonging to the class . The highest 16S rRNA gene sequence similarities of strain JA418 were found with the type strains of (95.9 %), (95.6 %), (95.5 %) and (95.6 %). The DNA base composition of strain JA418 was 71.4 mol% G+C (by HPLC). Based on the 16S rRNA gene sequence analysis and physiological and chemotaxonomic characteristics, strain JA418 is sufficiently different from other species to merit the description of a novel species, sp. nov., to accommodate it. The type strain is JA418 (=KCTC 5717 =NBRC 105221).

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2010-05-01
2021-10-28
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