UV-inducible DNA repair in the cyanobacteria Anabaena spp

Journal Article · Tue Sep 01 00:00:00 EDT 1987 · J. Bacteriol.; (United States)

OSTI ID:6069361

Levine, E; Thiel, T

Strains of the filamentous cyanobacteria Anabaena spp. were capable of very efficient photoreactivation of UV irradiation-induced damage to DNA. Cells were resistant to several hundred joules of UV irradiation per square meter under conditions that allowed photoreactivation, and they also photoreactivated UV-damaged cyanophage efficiently. Reactivation of UV-irradiated cyanophage (Weigle reactivation) also occurred; UV irradiation of host cells greatly enhanced the plaque-forming ability of irradiated phage under nonphotoreactivating conditions. Postirradiation incubation of the host cells under conditions that allowed photoreactivation abolished the ability of the cells to perform Weigle reactivation of cyanophage N-1. Mitomycin C also induced Weigle reactivation of cyanophage N-1, but nalidixic acid did not. The inducible repair system (defined as the ability to perform Weigle reactivation of cyanophages) was relatively slow and inefficient compared with photoreactivation.

• Research Organization: Univ. of Missouri-St. Louis
• OSTI ID: 6069361
• Journal Information: J. Bacteriol.; (United States), Vol. 169:9
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
CYANOBACTERIA
DNA REPAIR
GENETIC RADIATION EFFECTS
MITOMYCIN
PHOTOREACTIVATION
ULTRAVIOLET RADIATION
VIRUSES
ANTI-INFECTIVE AGENTS
ANTIBIOTICS
ANTIMITOTIC DRUGS
ANTINEOPLASTIC DRUGS
BIOLOGICAL EFFECTS
BIOLOGICAL RADIATION EFFECTS
BIOLOGICAL RECOVERY
BIOLOGICAL REPAIR
DRUGS
ELECTROMAGNETIC RADIATION
GENETIC EFFECTS
MICROORGANISMS
PARASITES
RADIATION EFFECTS
RADIATIONS
RECOVERY
REPAIR
560130* - Radiation Effects on Microorganisms