1887

Abstract

Two strains (JA746 and JA756) having yellowish brown-to-green pigment were isolated from a solar saltern and a pink pond, respectively. While both strains were non-motile and shared the presence of bacteriochlorophyll-, major cellular fatty acids (Cω7, C, C), quinone (Q-10), polar lipids and hopanoids, they differed from each other in their carotenoid composition. The G+C content of genomic DNA of strains JA746 and 756 was 62.4 and 63.3 mol%, respectively. The 16S rRNA gene-based EzTaxon-e search analysis of strains JA746 and 756 indicated highest sequence similarity with members of the genus in the family of the class . Strain JA746 has high sequence similarities with JA181 (97.3 %), A-20s (97.3 %), JA580 (97 %), MB-G2 (97 %) and other members of the genus (<97 %). Strain JA756 has high sequence similarities with JA181 (99.8 %), Hansen W4 (99.1 %), JA297 (97.9 %) and other members of the genus (<97 %). The sequence similarity between strains JA746 and JA756 was 97.5 %. However, these strains are not closely related to each other or to their phylogenetic neighbours since the DNA–DNA reassociation values were less than 56 %. The genomic information was also supported by phenotypic and chemotaxonomic results, leading us to classify strains JA746 ( = NBRC 108898 = KCTC 15180) and JA756 ( = NBRC 109122 = KCTC 15223) as the type strains of two novel species of the genus , for which the names sp. nov. and sp. nov. are proposed, respectively.

Funding
This study was supported by the:
  • Council of Scientific and Industrial Research (CSIR)
  • University Grants Commission (UGC)
  • Government of India
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2014-03-01
2021-10-21
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