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Volume 70, Issue 4

sp. nov., a gamma radiation-resistant bacterium isolated from gamma ray-irradiated soil Free

Abstract

A gamma radiation-resistant and pink-pigmented bacterial strain, designated as 17Sr1-39, was isolated from a gamma ray-irradiated soil sample collected in the Republic of Korea. Cells were Gram-stain-negative, strictly aerobic, flagellated, asporogenous, rod-shaped and methylotrophic. Results of 16S rRNA gene sequence analysis showed that strain 17Sr1-39 was phylogenetically related to PR1016A (97.3 %), DSM 16371 (97.2 %), PMB02 (97.0 %), IER25-16 (96.6 %), 17Sr1-28 (96.6 %) and JCM 2833 (93.4 %). The G+C content calculated based on the genome sequence was 70.4 mol%. The average nucleotide identity and DNA–DNA hybridization values between strain 17Sr1-39 and , , , , and were 77.3–89.9 and 22–38.2 %, respectively. The predominant fatty acids were summed feature 8 (Cω7 and/or Cω6) and summed feature 3 (Cω7 and/or Cω6). The predominant quinone was ubiquinone 10 and the major polar lipids were diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine. Based on the data from phenotypic tests and genotypic differences between strain 17Sr1-39 and its close phylogenetic relatives, strain 17Sr1-39 represented a new species belonging to the genus , for which the name sp. nov. (=KACC 52905=NBRC 112874) is proposed.

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  • Accepted:
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  • Published Online:
Keyword(s): gamma ray resistance , Methylobacterium terricola , methylotrophic metabolism and polyphasic taxonomy
© 2020 The Authors
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2020-02-25
2024-04-27
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Methylobacterium terricola sp. nov., a gamma radiation-resistant bacterium isolated from gamma ray-irradiated soil
Int J Syst Evol Microbiol 70, 2449 (2020); https://doi.org/10.1099/ijsem.0.004054
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