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Rhodobacter changlensis sp. nov., a psychrotolerant, phototrophic alphaproteobacterium from the Himalayas of India

¹ Bacterial Discovery Laboratory, Centre for Environment, Institute of Science and Technology, J. N. T. University, Kukatpally, Hyderabad 500 085, India
² Department of Plant Sciences, School of Life Sciences, University of Hyderabad, PO Central University, Hyderabad 500 046, India

Correspondence
Ch. V. Ramana
r449{at}sify.com
or
sasi449{at}yahoo.ie

A Gram-negative, non-motile, oval to rod-shaped, psychrotolerant, phototrophic, purple non-sulfur bacterium (designated strain JA139^T) was isolated from a snow sample from Changla Pass in the Indian Himalayas. Strain JA139^T had vesicular-type intracytoplasmic membrane structures and contained bacteriochlorophyll a and most probably spheroidene-like carotenoids. Biotin, niacin and thiamine were required for growth of strain JA139^T. Phylogenetic analysis on the basis of 16S rRNA gene sequences showed that the strain clustered with species of the genus Rhodobacter but was distinctly separate from all recognized members of the family Rhodobacteraceae. Based on the genotypic and phenotypic differences observed between strain JA139^T and recognized Rhodobacter species, strain JA139^T is considered to represent a novel species of the genus, for which the name Rhodobacter changlensis sp. nov. is proposed. The type strain is JA139^T (=DSM 18774^T =CCUG 53722^T =JCM 14338^T).

A photograph showing the yellowish-brown-coloured snow sample collected from Changla Pass, Indian Himalayas, from where strain JA139^T was isolated, a phase-contrast micrograph of cells of strain JA139^T and the whole-cell absorption spectrum of strain JA139^T are available as supplementary material with the online version of this paper.

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