Changes in uv-inactivation kinetics and division delay in Schizosaccharomyces pombe strains during different growth phases

Journal Article · Wed Dec 01 04:00:00 EST 1976 · Radiat. Res.; (United States)

DOI:https://doi.org/10.2307/3574328· OSTI ID:7321173

Hannan, M A; Miller, D R; Nasim, A

Logarithmic and stationary phase cultures of the wild type and a number of radiation-sensitive mutants of Schizosaccharomyces pombe were uv-irradiated and their survival curves as well as postirradiation division delay were studied. The mutants could be classified into two groups. One group showed a marked difference in the level of resistance as well as in the shape of survival curves due to a change in growth phase, while in the other group this difference was negligible. This differential response was found to be related to a variation in uv-induced division delay in the mutants in different phases of growth. The implication of division delay on cell survival and shapes of survival curves is discussed in relation to a recently proposed model of cellular inactivation.

• Research Organization: National Research Council of Canada, Ottawa
• OSTI ID: 7321173
• Journal Information: Radiat. Res.; (United States), Journal Name: Radiat. Res.; (United States) Vol. 68:3; ISSN RAREA
• Country of Publication: United States
• Language: English

Related Subjects

560131* -- Radiation Effects on Microorganisms-- Basic Studies-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIOMASS
CELL DIVISION
ELECTROMAGNETIC RADIATION
ENERGY SOURCES
FUNGI
IRRADIATION
MICROORGANISMS
MUTANTS
PLANTS
RADIATIONS
RADIOSENSITIVITY
RENEWABLE ENERGY SOURCES
SURVIVAL CURVES
ULTRAVIOLET RADIATION
YEASTS