A New Ionizing-radiation Resistant Strain WGR702 Isolated,Identified, and Radioresistant Character
- VernacularTitle:一株新的耐辐射菌WGR702的分离鉴定及耐辐射特性
- Author:
Ji-Hua SUN
;
Pei-Hong SHEN
;
Bo WU
;
- Publication Type:Journal Article
- Keywords:
Radioresistant bacterium, WGR702, Serratia, Isolate and identify
- From:
Microbiology
2008;0(08):-
- CountryChina
- Language:Chinese
-
Abstract:
A new ionizing-radiation resistant strain WGR702 was isolated from arid soils which had been ra-diated. The strain WGR702 was Gram-positive and coccus, the diameter of the cell was 1.5 ?m～2.5?m.The strain WGR702 was pink-pigmented, motile, facultative anaerobe and non-spore forming. The range tem-perature and pH for strain WGR702 growth were 10℃～35℃ and pH 5.0～10.0 respectively. The strain WGR702 had a G+C content of 60.5 mol%. UV and gamma radiation survival curves showed the strain WGR702 had highly ionizing-radiation resistant. Phylogenetic analysis of the 16S rDNA gene sequences (EU315117) showed 94.79%～98.53% similarities with other recognized Serratia species. Primary charac-teristics that distinguish isolate WGR702 from the species of genus Serratia include the cells are spherical and Gram-positive. Based on the phenotypic, biochemical and physiological characteristics differences it is proposed that the new isolated strain WGR702 might be classified as a novel species of Serratia.
