Journal
INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY
Volume 61, Issue -, Pages 1448-1453Publisher
SOC GENERAL MICROBIOLOGY
DOI: 10.1099/ijs.0.013482-0
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- Ministry of Education, Culture, Sports, Science and Technology, Japan
- Japan Society for the Promotion of Science
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Four gamma- and UV-radiation-resistant bacterial strains, designated TDMA-24(T), TDMA-24-2, TDMA-24-3 and TDMA-24-4, were isolated from a fresh-water sample collected at Misasa, Tottori, Japan. Cells of these strains were Gram-reaction-positive, non-motile, non-spore-forming, rod-shaped and formed red colonies. The genomic DNA G+C contents ranged from 70.5 to 70.6 mol%. Phylogenetic analysis based on 16S rRNA gene sequences indicated that the novel isolates belong to the genus Deinococcus, the highest sequence similarities being with Deinococcus aquaticus PB314(T) (98 WO and Deinococcus caeni Ho-08(T) (97 %). The polar lipid profile of strain TDMA-24(T) comprised three unidentified phosphoglycolipids, five unidentified glycolipids and seven unidentified polar lipids. MK-8 was the predominant respiratory quinone. Major fatty acids were iso-C(15:0), C(15:1)omega 6c, C(15:0), C(16:0) and summed feature 3 (iso-C(15:0) 2-OH and/or C(16:1)omega 7c). On the basis of their phylogenetic positions and chemotaxonomic and phenotypic characteristics, the novel isolates represent a novel species of the genus Deinococcus, for which the name Deinococcus depolymerans sp. nov. is proposed. The type strain is TDMA-24(T) (=JCM 14369(T) =NBRC 102115(T) =CCUG 53609(T)).
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