Exiguobacterium soli sp. nov., a psychrophilic bacterium from the McMurdo Dry Valleys, Antarctica

• Main Authors: Chaturvedi, Preeti, Prabahar, V., Manorama, R., Pindi, Pavan Kumar, Bhadra, Bhaskar, Begum, Zareena, Shivaji, S.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Society for General Microbiology 2008
• Subjects: QL Zoology; McMurdo Dry Valleys; Antarc*; Antarctica
• Online Access: http://repository.ias.ac.in/64268/; http://ijs.sgmjournals.org/content/58/10/2447.abstract?sid=80b2294d-2bd5-42d0-b3db-4e1e6d283a9c

A novel psychrophilic bacterium, designated strain DVS 3Y T , was isolated from a moraine sample from the McMurdo Dry Valleys, Antarctica. Phenotypic and chemotaxonomic characteristics and data from a phylogenetic analysis based on 16S rRNA gene sequences indicated that strain DVS 3Y T was related to the genus Exiguobacterium. Strain DVS 3Y T exhibited >97% gene sequence similarity with respect to Exiguobacterium acetylicum DSM 20416 T (97.4%), Exiguobacterium oxidotolerans DSM 17272 T (97.4%), Exiguobacterium indicum IAM 15368 T (97.6%), Exiguobacterium undae DSM 14481 T (98.2%), Exiguobacterium sibiricum DSM 17290 T (98.6%) and Exiguobacterium antarcticum DSM 14480 T (99.6%). However, the levels of DNA-DNA relatedness between strain DVS 3Y T and E. acetylicum DSM 20416 T , E. oxidotolerans JCM 12280 T , E. indicum IAM 15368T, E. undae DSM 14481 T , E. sibiricum DSM 17290 T and E. antarcticum DSM 14480 T were less than 70% (52, 25, 16, 33, 16 and 38?%, respectively). Strain DVS 3Y T also differed from these six closely related species in a number of phenotypic traits. Phenotypic, chemotaxonomic and phylogenetic data suggest that strain DVS 3Y T represents a novel species of the genus Exiguobacterium, for which the name Exiguobacterium soli sp. nov. is proposed. The type strain is DVS 3Y T (=MTCC 4816 T =JCM 14376 T ).