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5. Rhodovulum aestuarii sp. nov., isolated from a brackish water body

Author

Divyasree, B., Ramana, Ch. V., Sasikala, Ch., Lakshmi, K. V. N. S., Bharti, Dave, Divyasree, B., Ramana, Ch. V., Sasikala, Ch., Lakshmi, K. V. N. S., and Bharti, Dave

Abstract

A yellowish brown, phototrophic, purple non-sulfur bacterium, strain JA924r, was isolated in pure culture from a brackish water sample collected from an estuary. Single cells were oval to rod-shaped, non-motile and Gram-stain-negative and had a vesicu!ar architecture of intracellular photosynthetic membranes. Bacteriochlorophyll-a and carotenoids of the spheroidene series were present as photosynthetic pigments. Photolithoautotrophy, chemo-organoheterotrophy and photo-organoheterotrophy were the growth modes observed. Strain JA924T had complex growth requ1rements. Strain JA924 T was mesophilic and moderate!y halophilic. The DNA G -t- C content was 64 mal% (HPLC). The major cellular fatty acids were C18 1f·)7c/C 18 : 11·)6c, Ct 6 0 and C 18 . 0 . The major quinone was ubiquinone-1 0 (0-1 0). Phosphatidylg!ycerol, phosphatidylethanolamine, sulfolipid and an aminolipid were the main polar Iipids of strain JA924r. EzTaxon-e BLAST searches based on the 168 rRNA gene sequence of JA924T revealed highest similarity with Rhodovulum mangrovi AK41 T (98.19 %) and other members of the genus Rhodovulum (<95.71 %). Strain JA924T was further identified tobe distantly related to Rhodovulum mangrovi AK41 T ( <29% based on ONA-DNA hybridization and t1 Tm (>5 oc). Phenotypic, chemotaxonomic and molecular differences indicate that strain JA924 T represents a novel species of the genus Rhodovulum, for which the name Rhodovulum aestuarii sp. nov. is proposed. The type strain is JA924 T ( = LMG 29031 T = KCTC 15485 T).

Published
2016
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14. Reclassification of Rhodospirillum photometricum Molisch 1907, Rhodospirillum sulfurexigens Anil Kumar et al. 2008 and Rhodospirillum oryzae Lakshmi et al. 2013 in a new genus, Pararhodospirillum gen. nov., as Pararhodospirillum photometricum comb. nov., Pararhodospirillum sulfurexigens comb. nov. and Pararhodospirillum oryzae comb. nov., respectively, and emended description of the genus Rhodospirillum

Author

Lakshmi, K. V. N. S., primary, Divyasree, B., additional, Ramprasad, E. V. V., additional, Sasikala, Ch., additional, and Ramana, Ch. V., additional

Published
2014
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