@article{oai:repo.qst.go.jp:00085285,
 author = {Izumi, Kouki and Katsuya, Sato and Yutaka, Ono and Narumi, Issay and Katsuya, Sato and Yutaka, Ono},
 journal = {QST Takasaki Annual Report 2020},
 month = {Mar},
 note = {Rubrobacter belong to the phylum “Actinobacteria” while Deinococcus that are well known as the radioresistant bacteria belong to the distinct phylum “Deinococcus-Thermus”. To date, 11 species of Rubrobacter have been reported, and radiation resistance data are described for 3 species, namely Rubrobacter radiotolerans, Rubrobacter xylanophilus and Rubrobacter taiwanensis. The strain AA3-22 isolated from Arima Onsen is a moderate thermophile with an optimum growth temperature of 58 ˚C, and it has been reported from genome sequence analysis that it is most related to R. xylanophilus. In this study, we compared the survival curves of the strain AA3-22, the R. radiotolerans and R. xylanophilus type strains in order to clarify the resistance to gamma- and ultraviolet-rays. AA3-22 showed the lowest resistance to gamma-rays among the three strains tested. The survival curve of AA3-22 resembled that of the wild-type strain of Deinococcus radiodurans. The gamma-ray resistance of R. radiotolerans JCM 2153 was in good agreement with the previous literature value. On the other hand, the gamma-ray resistance of R. xylanophilus JCM 11954 was lower than the previous literature value, which seemes to be due to the difference in cell density subjected to irradiation. Regarding ultraviolet resistance, AA3-22 exhibited the highest resistance among the three strains tested, and R. xylanophilus JCM 1195 unexpectedly showed significant sensitivity to ultraviolet-rays},
 title = {Resistance to gamma- and ultraviolet-rays of Rubrobacter sp. AA3-22},
 volume = {QST-M-33},
 year = {2022}
}