Open AccessThe variations of sensitivity to gamma radiation in different strains of Mycobacterium phlei
Author(s) -
KOLMAN ADA
Publication year - 1978
Publication title -
hereditas
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 50
eISSN - 1601-5223
pISSN - 0018-0661
DOI - 10.1111/j.1601-5223.1978.tb01596.x
Subject(s) - mycobacterium phlei , biology , radiation sensitivity , strain (injury) , mutant , radiation , sensitivity (control systems) , radiosensitivity , microbiology and biotechnology , mycobacterium , irradiation , biochemistry , bacteria , genetics , anatomy , gene , optics , physics , electronic engineering , nuclear physics , engineering
Strains of Mycobacterium phlei differ in sensitivity to γ‐radiation. The acid‐fast strain PA was 2.4 times more sensitive than the non‐acid‐fast strains PN and its morphological mutant PN‐bb. A higher sensitivity of the acid‐fast strain to γ‐radiation is in agreement with its sensitivity to UV‐radiation and chemical mutagens, described before in the literature. The new mutant PN‐bb, which was isolated after treatment of the strain PN with 60 Co γ‐radiation and ethyl methanesulfonate, shows an unusual morphological character of the colonies and was more resistant to γ‐radiation at higher doses, indicating that a certain fraction of the cells had a lower sensitivity to γ‐radiation.