Effects of 60Co Gamma-Rays, Ultraviolet Light, and Mitomycin C on Halobacterium salinarium and Thiobacillus intermedius

Hamid Reza Shahmohammadi, Ezat Asgarani, Hiroaki Terato, Hiroshi Ide, Osamu Yamamoto

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Lethal effects of 60Co γ-rays, UV light, and mitomycin C on two kinds of bacteria, Halobacterium salinarium which grows in highly concentrated salt media and Thiobacillus intermedius which requires reduced sulfur compounds, were studied and compared with those on Escherichia coli B/r. D37 values for H. salinarium, T. intermedius and E. coli B/r were 393, 150, and 92 Gy, respectively, by exposure to 60Co γ-rays. They were 212, 38, and 10 J/m2, respectively, by exposure to UV light and 2.36, 0.25, and 0.53 μg/ml/h, respectively, by exposure to mitomycin C. Against these agents, H. salinarium was much more resistant than T. intermedius and E. coli B/r.

Original languageEnglish
Pages (from-to)37-43
Number of pages7
JournalJournal of Radiation Research
Issue number1
Publication statusPublished - Jan 1 1997
Externally publishedYes



  • Halobacterium
  • Mitomycin C
  • Thiobacillus
  • UV light
  • γ-rays

ASJC Scopus subject areas

  • Radiation
  • Radiology Nuclear Medicine and imaging
  • Health, Toxicology and Mutagenesis

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