1887

Abstract

A Gram-stain-negative, rod-shaped, phototrophic bacterium, strain JA793, was isolated from rhizosphere soil of paddy. The strain was capable of growing phototrophically and chemotrophically. Bacteriochlorophyll- and carotenoids of the spirilloxanthin series were present as photosynthetic pigments. The major fatty acid of strain JA793 was Cω7/Cω6 (>65.7 %), with minor amounts of C, Cω7/Cω6, Cω6,9, C 3-OH, C and C also present. Ubiquinone-10 and rhodoquinone-10 were present as primary quinones. Phosphatidylglycerol, phosphatidylethanolamine and phosphatidylcholine were the major polar lipids, while minor amounts of amino lipids and unidentified lipids were also present. The G+C content of genomic DNA of strain JA793 was 68.7 mol%. 16S rRNA gene-based EzTaxon-e search analysis of strain JA793 indicated highest sequence similarity with members of the genus in the family of the class . Strain JA793 had high sequence similarity with AS130 (98.6 %), 941 (98 %), JA415 (97.5 %) and JA266 (97.3 %) and other members of the genus (<97 %). However, strain JA266 was related by <59 % (based on DNA–DNA hybridization) to DSM 11907 ( = AS130), DSM 5909 ( = 941), JA415 and JA266. The genomic information was well supported by phenotypic and chemotaxonomic data to classify strain JA793 as a representative of a novel species in the genus , for which the name sp. nov. is proposed. The type strain is JA793 ( = NBRC 109406 = KCTC 15260).

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2014-07-01
2020-10-31
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