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

Conference · Sat Jan 01 04:00:00 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-
• Conference Information: Journal Name: Adv. Space Res.; (United States) Journal Volume: 3
• Country of Publication: United States
• Language: English

Related Subjects

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