Genetic effects of cosmic radiation on bacteriophage T4Br+ (on materials of biological experiment "Soyuz-Apollo").
During the experiment "Spore-ring Forming Fungi Biorhythm" of the Apollo-Soyuz test project the Rhythm-1 apparatus contained a dried film culture of bacteriophage T4Br+, growing cultures of Actinomyces and plastic nuclear particle detectors. The following were studied: the frequency of induction of r mutations in the bacteriophage film per 2 X 10(4) surviving particles, the spectrum of mutant types obtained (rI, rII, rIII), and the possible molecular mechanisms for the occurrence of rII mutants with due regard to the registered tracks of heavy nuclear particles. The studies showed that the local radiation due to heavy nuclear particle tracks plays a major role in space radiation damage.
Yurov
S S
SS
Institute of Biological Physics of the Academy of Sciences of the USSR, Pushchino, Moscow Region, USSR.
Akoev
I G
IG
Akhmadieva
A K
AK
Livanova
I A
IA
Leont'eva
G A
GA
Marennyi
A M
AM
Popov
V I
VI
D017122:Bacteriophage T4 / Q000235:genetics* / Q000528:radiation effects*; D003101:Collodion; D003359:Cosmic Radiation; D004249:DNA Damage; D004279:DNA, Viral / Q000187:drug effects / Q000235:genetics; D016296:Mutagenesis; D009153:Mutagens / Q000494:pharmacology; D009154:Mutation; D011108:Polymers; D011834:Radiation Monitoring / Q000295:instrumentation; D011874:Radiometry; D013026:Space Flight
D004279:DNA, Viral; D009153:Mutagens; D011108:Polymers; C017902:lexan; D003101:Collodion