1887

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Volume 67, Issue 7

Description of a phototrophic bacterium, sp. nov. Free

Abstract

Strain JA878 was purified from a photoheterotrophic enrichment obtained from a sediment sample of a brown pond near Nari Salt Pan, Bhavnagar, Gujarat, India. Cells of the isolate were coccoid, motile by means of single polar flagellum and Gram-stain-negative. The internal photosynthetic membrane architecture was vesicular. Strain JA878 contained bacteriochlorophyll and spirilloxanthin series of carotenoids with rhodopin (>85 %) as the major component. Strain JA878 grew optimally at pH 10–11, and had no requirement for NaCl (tolerated up to 6 %, w/v) or vitamins for growth. Cω7/C ω6, Cω7/C ω6 and C were identified as the major fatty acids (>10 %). Phosphatidylglycerol, phosphatidylethanolamine, aminophospholipid and an unknown polar lipid were identified. Q8 was the predominant quinone system in strain JA878. The DNA G+C content was 62.4 mol%. Highest 16S rRNA gene sequence similarity through EzTaxon-based analysis of strain JA878 was found with the type strains of (99 %) (98.6 %), (98.4 %), (97.3 %) and other members of the class (<97.3 %), revealing a close affiliation to the genera , and However, the phylogenetic treeing firmly placed the strain in the genus Phenotypic and chemotaxonomic evidence supported the affiliation of strain JA878 to the genus and not to , or other known genera of . Distinct physiological, genotypic and chemotaxonomic differences indicate that strain JA878 represents a novel species of the genus for which the name sp. nov. is proposed. The type strain is JA878 (=KCTC 15531=JCM 31245).

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  • Accepted:
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Keyword(s): new species , phototroph , proteobacteria and Thiorhodococcus
© 2017 IUMS
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2017-07-01
2024-04-25
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Description of a phototrophic bacterium, Thiorhodococcus alkaliphilus sp. nov.
Int J Syst Evol Microbiol 67, 2323 (2017); https://doi.org/10.1099/ijsem.0.001947
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