Open AccessRoseomonas radiodurans sp. nov., a gamma-radiation-resistant bacterium isolated from gamma ray-irradiated soil
Author(s) -
JuYoung Kim,
Donguk Kim,
Myung-Suk Kang,
Jun Hwee Jang,
Su Jeong Kim,
Min Ji Kim,
Ju Yeon Lee,
Yoon Seo Lee,
Jing Zhang,
Sangyong Lim,
Myung Kyum Kim
Publication year - 2018
Publication title -
international journal of systematic and evolutionary microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.925
H-Index - 173
eISSN - 1466-5034
pISSN - 1466-5026
DOI - 10.1099/ijsem.0.002852
Subject(s) - biology , 16s ribosomal rna , microbiology and biotechnology , bacteria , strain (injury) , phosphatidylglycerol , alphaproteobacteria , phylogenetic tree , genomic dna , gene , phosphatidylcholine , genetics , phospholipid , anatomy , membrane
A bacterial strain, designated 17Sr1-1 T , was isolated from gamma ray-irradiated soil. Cells of this strain were Gram-stain-negative, strictly aerobic, motile and non-spore-forming rods. Growth occurred at 18-42 ˚C and pH 6.0-8.0, but no growth occurred at 2 % NaCl concentration. The major fatty acids of strain 17Sr1-1 T were summed feature 8 (C18 : 1ω7c and/or C18 : 1ω6c), iso-C17 : 1ω5c and C16 : 0. The polar lipid profile contained diphosphatidylglycerol, glycolipid, phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol and four unidentified lipids. The G+C content of the genomic DNA of 17Sr1-1 T was 71.9 mol%. The 16S rRNA gene sequence analysis showed that strain 17Sr1-1 T was phylogenetically related to Roseomonas pecuniae N75 T and Roseomonas rosea 173-96 T (96.6 and 96.3 % sequence similarity, respectively). The genotypic and phenotypic data showed that strain 17Sr1-1 T could be distinguished from its phylogenetically related species, and that this strain represented a novel species within the genus Roseomonas, for which the name Roseomonas radiodurans sp. nov. (type strain 17Sr1-1 T =KCTC 52899 T =NBRC 112872 T ) is proposed as the first reported gamma ray-resistant Roseomonas species.