Cryobacterium roopkundense sp. nov., a psychrophilic bacterium isolated from glacial soil

Reddy, G. S. N. ; Pradhan, Suman ; Manorama, Ruth ; Shivaji, S. (2010) Cryobacterium roopkundense sp. nov., a psychrophilic bacterium isolated from glacial soil International Journal of Systematic and Evolutionary Microbiology, 60 (4). pp. 866-870. ISSN 1466-5026

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Official URL: http://ijs.sgmjournals.org/content/60/4/866.abstra...

Related URL: http://dx.doi.org/10.1099/ijs.0.011775-0

Abstract

Strain RuGl7T was isolated from a soil sample collected at the periphery of the glacial Lake Roopkund in the Himalayan mountain range, India. Cells of RuGl7T were Gram-positive, aerobic, rod-shaped, motile and grew optimally between 15 and 18 °C. Cells of RuGl7T contained 2,4-diaminobutyric acid in the cell-wall peptidoglycan and the major menaquinones were MK-10, MK-11 and MK-12. The polar lipids present were diphosphatidylglycerol and phosphatidylglycerol and an unknown lipid and the major fatty acid was anteiso-C15:0. Based on the above characteristics, strain RuGl7T was assigned to the genus Cryobacterium. Strain RuGl7T shared a 16S rRNA gene sequence similarity of 97.0 and 99.0% with Cryobacterium psychrotolerans JCM 13925T and Cryobacterium psychrophilum JCM 1463T, respectively. However, DNA-DNA relatedness values between strain RuGl7T and C. psychrotolerans and C. psychrophilum were 28 and 23%, respectively. Furthermore, strain RuGl7T exhibited several phenotypic and genotypic differences when compared with C. psychrotolerans, C. psychrophilum and Cryobacterium mesophilum. Based on these differentiating characteristics, strain RuGl7T was identified as a novel species of the genus Cryobacterium for which the name Cryobacterium roopkundense sp. nov. is proposed. The type strain is RuGl7T (=DSM 21065T=JCM 15131T).

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Deposited On:07 Oct 2011 08:52
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