Results on artemia cysts, lettuce and tobacco seeds in the Biobloc 4 experiment flown aboard the Soviet biosatellite Cosmos 1129

Conference · Sat Jan 01 00:00:00 EST 1983 · Adv. Space Res.; (United States)

OSTI ID:6131637

Gaubin, Y; Planel, H; Gasset, G; Pianezzi, B

The effects of space flight factors, in particular the heavy ion component of cosmic rays, on dormant stages of life forms were investigated as part of the Biobloc 4 experiment flown aboard the Cosmos 1129 biosatellite. Artemia cysts and seeds of tobacco and lettuce plants were placed in tubes and in monolayers sandwiched between layers of visual particle track detectors. Although Artemia cysts exposed in the dry state did not differ from ground controls, hydrated cysts exhibited a slight decrease in hatchability and reduced (C-14)O2 incorporation and protein and nucleic acid synthesis. For cysts held in the monolayers, hits by HZE particles were observed to stimulate emergence, hatching and survival. Higher proportions of chromosomal aberrations were found in lettuce seeds hit by HZE particles, while space flight produced a stimulatory effect on both germination rate and abnormality frequency in both hit and nonhit tobacco seeds. 9 references.

• Research Organization: Toulouse III Universite, France
• OSTI ID: 6131637
• Report Number(s): CONF-820582-
• Journal Information: Adv. Space Res.; (United States), Vol. 3; Conference: 24. COSPAR meeting (Committee on Space Research), Ottawa, Canada, 17 May 1982
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ARTEMIA
BIOLOGICAL RADIATION EFFECTS
COSMIC NUCLEI
SEEDS
BIOLOGICAL EFFECTS
CHROMOSOMES
HEAVY IONS
NICOTIANA
RADIATION EFFECTS
SPACE FLIGHT
ANIMALS
AQUATIC ORGANISMS
ARTHROPODS
BRANCHIOPODS
CHARGED PARTICLES
COSMIC RADIATION
CRUSTACEANS
INVERTEBRATES
IONIZING RADIATIONS
IONS
NUCLEI
PLANTS
RADIATIONS
560140* - Radiation Effects on Plants
560153 - Radiation Effects on Animals- Invertebrates- (-1987)