Deinococcus radioresistens sp. nov., a UV and gamma radiation-resistant bacterium isolated from mountain soil.
Antonie Van Leeuwenhoek
; 107(2): 539-45, 2015 Feb.
Article
in En
| MEDLINE
| ID: mdl-25515413
ABSTRACT
Two Gram-negative, non-motile, short rod-shaped bacterial strains, designated as 8A(T) and 28A, were isolated from Mount Deogyusan, Jeonbuk Province, South Korea. The isolates were analyzed by a polyphasic approach, revealing variations in their phenotypic characters but high DNA-DNA hybridisation values reciprocally, confirming that they belong to the same species. Both the isolates also showed a high resistance to UV compared with Deinococcus radiodurans, and a gamma-radiation resistance similar to other members of the genus Deinococcus. Phylogenetic analysis with the 16S rRNA gene sequences of closely related species indicated their similarities were below 97 %. Chemotaxonomic data showed the most abundant fatty acids to be C161ω7c and C160. The strains can be distinguished from closely related species by the production of esterase (C4) and α-galactosidase, and by their ability to assimilate L-alanine, L-histidine and N-acetyl-D-glucosamine. Based on the phenotypic, phylogenetic, and chemotaxonomic data, the isolates represent a novel species of the genus Deinococcus, for which the name Deinococcus radioresistens sp. nov. is proposed. The type strain is 8A(T) (KEMB 9004-109(T) = JCM 19777(T)), and a second strain is 28A (KEMB 9004-113 = JCM 19778).
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Soil Microbiology
/
Ultraviolet Rays
/
Deinococcus
/
Microbial Viability
/
Gamma Rays
Country/Region as subject:
Asia
Language:
En
Journal:
Antonie Van Leeuwenhoek
Year:
2015
Document type:
Article