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Radiobiological experiments with plant seeds aboard the biosatellite Cosmos 1887The effects of spaceflight factors on the seeds of Arabidopsis thaliana and Crepis capillaris were studied. The seeds were located inside the satellite in an open space, protected with aluminum foil and also exposed without the foil cover. When the seeds were in open space without any protection, their viability was found to be suppressed; the survival rate and fertility of plants grown from these seeds were also diminished. An increase in the frequency of chromosome aberrations (CA) and in the number of multiple injuries was registered in this case. Experiments with the aluminum foil shielding showed a decrease in the suppression of the seeds' viability, but mutational changes were found to be even more increased, while the survival rate and fertility of the plants decreased. An increase in the thickness of shielding resulted in a decrease in the effects up to the level of the control, except for the effects connected with CA and fertility of the plants. Analysis of the results shows that these impairments can be ascribed to the action of single heavy charged particles (HCP). The seeds can thus be regarded as an integral biological 'dosimeter' which allows estimation of the total effects of radiation, ecological and biological factors.
Document ID
19950019513
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Benton, E. V.
(San Francisco Univ. CA, United States)
Anikeeva, I. D.
(Academy of Sciences USSR, Moscow, Ussr)
Akatov, Yu. A.
(Institute of Biomedical Problems Moscow, Ussr)
Vaulina, E. N.
(Academy of Sciences USSR, Moscow, Ussr)
Kostina, L. N.
(Academy of Sciences USSR, Moscow, Ussr)
Marenny, A.
(Institute of Biomedical Problems Moscow, Ussr)
Portman, A. I.
(Institute of Biomedical Problems Moscow, Ussr)
Rusin, S. V.
(Moscow Physical-Engineering Inst. Russia)
Date Acquired
September 6, 2013
Publication Date
March 1, 1995
Publication Information
Publication: High LET, Passive Space Radiation Dosimetry and Spectrometry
Subject Category
Life Sciences (General)
Accession Number
95N25933
Funding Number(s)
CONTRACT_GRANT: NCC2-521
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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