1887

Abstract

Two strains (JA575 and JA576) of orange- to pink-pigmented, rod-shaped, motile and budding phototrophic bacteria were isolated from paddy soils. Both strains contained bacteriochlorophyll and carotenoids of spirilloxanthin series. Both strains had Cω7 as the major cellular fatty acid, ubiquinone-10 (Q) as the main quinone, and diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and phosphatidylcholine as polar lipids. Phylogenetic analysis on the basis of 16S rRNA gene sequences showed that both strains clustered with species of the genus in the class . Strains JA575 and JA576 were genotypically (<35 % DNA–DNA relatedness) and phenotypically distinct from each other. Further, both strains showed less than 48 % DNA–DNA relatedness with the type strains of all recognized species of the genus The molecular evidence is supported by phenotypic evidence. It is proposed that strains JA575 and JA576 be classified as representing two novel species of the genus with the species names sp. nov. and sp. nov., respectively. The type strains of the proposed novel species are JA575 ( = NBRC 108862 = KCTC15143) and JA576 ( = NBRC 108863 = KCTC 15144), respectively.

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2013-01-01
2019-12-05
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