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dc.contributor.authorNupur, P.
dc.contributor.authorSrinivas, T.N.R.
dc.contributor.authorTakaichi, S.
dc.contributor.authorAnilKumar, P.
dc.date.accessioned2015-11-06T05:48:07Z
dc.date.available2015-11-06T05:48:07Z
dc.date.issued2015
dc.identifier.citationInternational Journal of Systematic and Evolutionary Microbiology, vol.65; 2015; 2357-2364
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/4854
dc.description.abstractA novel brown-coloured, Gram-negative-staining, rod-shaped, motile, phototrophic, purple sulfur bacterium, designated strain AK40<sup>T</sup> , was isolated in pure culture from a sediment sample collected from Coringa mangrove forest, India. Strain AK40<sup>T</sup> contained bacteriochlorophyll a and carotenoids of the rhodopin series as major photosynthetic pigments. Strain AK40<sup>T</sup> was able to grow photoheterotrophically and could utilize a number of organic substrates. It was unable to grow photoautotrophically and did not utilize sulfide or thiosulfate as electron donors. Thiamine and riboflavin were required for growth. The dominant fatty acids were C<sub>12 : 0</sub>, C<sub>16 : 0</sub>, C<sub>18 : 1</sub>v7c and summed feature 3 (C16 : 1v7c and/or iso-C<sub>15 : 0</sub> 2-OH). The polar lipid profile of strain AK40<sup>T</sup> was found to contain diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol and eight unidentified lipids. Q-10 was the predominant respiratory quinone. The DNA G+C content of strain AK40<sup>T</sup> was 65.5 mol%. 16S rRNA gene sequence comparisons indicated that the isolate represented a member of the family Chromatiaceae within the class Gammaproteobacteria. 16S rRNA gene sequence analysis indicated that strain AK40<sup>T</sup> was closely related to Phaeochromatium fluminis, with 95.2 % pairwise sequence similarity to the type strain; sequence similarity to strains of other species of the family was 90.8–94.8 %. Based on the sequence comparison data, strain AK40<sup>T</sup> was positioned distinctly outside the group formed by the genera Phaeochromatium, Marichromatium, Halochromatium, Thiohalocapsa, Rhabdochromatium and Thiorhodovibrio. Distinct morphological, physiological and genotypic differences from previously described taxa supported the classification of this isolate as a representative of a novel species in a new genus, for which the name Phaeobacterium nitratireducens gen. nov., sp. nov. is proposed. The type strain of Phaeobacterium nitratireducens is AK40<sup>T</sup> (5JCM 19219<sup>T</sup> 5MTCC 11824<sup>T</sup> )
dc.language.isoen
dc.publisherInternational Union of Microbiological Societies
dc.rights© 2015 IUMS Printed in Great Britain. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
dc.subjectAQUATIC COMMUNITIES::Mangrove
dc.subjectGEOLOGY AND GEOPHYSICS::Sediments and sedimentation
dc.subjectMICROBIOLOGY::Taxonomy and morphology
dc.subjectMICROBIOLOGY::Genetics and evolution
dc.titlePhaeobacterium nitratireducens gen. nov., sp. nov., a phototrophic gammaproteobacterium isolated from a mangrove forest sediment sample
dc.typeJournal Article


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