Deinococcus psychrotolerans sp. nov., isolated from soil on the South Shetland Islands, Antarctica

Autor: Zuobing Liu, Yiming Zhao, Ping Liu, Fang Peng, Guoxin Zhu, Yingchao Geng, Liqiu Wang, Jin Tian, Ruichen Zheng, Jian Yang
Rok vydání: 2019
Předmět:
Zdroj: International Journal of Systematic and Evolutionary Microbiology. 69:3696-3701
ISSN: 1466-5034
1466-5026
DOI: 10.1099/ijsem.0.003484
Popis: A Gram-stain-negative, non-motile, strictly aerobic, coccus-shaped bacterium, designated S14-83T, was isolated from a soil sample collected from the South Shetland Islands of Antarctica. Phylogenetic analysis based on 16S rRNA gene sequences indicated that the strain is a novel member of the genus Deinococcus , with Deinococcus alpinitundrae as its closest relative (96.1 % similarity). The DNA G+C content of the strain was 61.1 mol% and the major respiratory quinone was MK-8. Major cellular fatty acids were summed feature 3 (C16 : 1ω7c/C16 : 1ω6c) and C16 : 0. As well as containing glycophospholipid, aminophospholipids and glycolipid as major polar lipids, there were also some unknown polar lipids. The diagnostic diamino acid in the cell-wall peptidoglycan was ornithine, corroborating the assignment of the strain to the genus Deinococcus . Strain S14-83T was shown to be extremely resistant to gamma radiation (>10 kGy) and UV light (460 Jm−2). On the basis of phylogenetic, chemotaxonomic and phenotypic data presented here, strain S14-83T represents a novel species of the genus Deinococcus , for which the name Deinococcus psychrotolerans sp. nov. is proposed. The type strain is S14-83T (=CCTCC AB 2015449T= DSM 105285 T).
Databáze: OpenAIRE