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EXPERIMENT INFORMATION

Determination of Influence of Zero Gravity on Mutation Process Using Controlled Gamma Ray Exposure (P-1123)
Principal Investigator
Research Area:
Plant biology
Radiation biology
Species Studied
Scientific Name: Tradescantia Species: Spider Wort Strain: Flowering

Description
Objectives:

The plant used in the experiment was a special clone of Tradescantia that was heterozygous for flower color and hence useful for easy detection of somatic mutations. These plants are characterized by twelve large somatic chromosomes that are well suited for detailed cytologic analysis. This experiment was to determine the effect of weightlessness and other spacecraft environmental conditions on spontaneous and radiation-induced somatic mutation rates and on selected cytologic changes.


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Publications
Marimuthu, K.M. et al.: The Cytological Effects of Spaceflight Factors, Vibration, Clinostat, and Radiation on the Root Tip Cells of Tradescantia. Radiation Research, vol. 42, 1970, pp. 105-119.

Marimuthu, K.M. et al.: The Effects of Spaceflight Factors and Gamma Radiation on Flower Production and Microspore Division and Development in Tradescantia. Radiation Botany, vol. 10, 1970, pp. 249-259.

Schairer, L.A. et al.: Radiobiological Studies of Plants Orbited in Biosatellite II. Life Sciences and Space Research: Proceedings of the 12th Plenary Meeting of COSPAR, Prague, Czechoslovakia, May 11-14, 1969, North Holland Publishing, 1970, pp. 19-24.

Sparrow, A.H. et al.: Genetic and Cytological Studies of Tradescantia Irradiated During Orbital Flight. Bioscience, Vol. 18 (No. 6):582-590, 1968.

Sparrow, A.H. et al.: Genetic and Cytological Studies of Tradescantia Irradiated During Orbital Flight. Japanese Journal of Genetics, vol. 43, 1968, pp. 470-471.

Sparrow, A.H. et al.: Radiobiologic Studies of Tradescantia Plants Orbited in Biosatellite II. Experiments of Biosatellite II, NASA SP-204, 1971, pp. 99-122.

Sparrow, A.H. et al.: Radiobiological Studies of Tradescantia Plants Orbited in Biosatellite II. BIOSPEX: Biological Space Experiments, NASA TM-58217, 1979, p. 152.

Sparrow, A.H. et al.: Radiobiological Studies of Tradescantia Plants Orbited in Biosatellite II. Radiation Research, vol. 35, 1968, p. 502.

Sparrow, A.H. et al.: Tradescantia Experiment in Biosatellite II. Proceedings of the Symposium on Radiation Biology and Space: International Congress of Radiation Research, Evian, France, 1970.

Keywords
Chromosome aberrations
Mitosis
Rotation
Vibration
Abnormalities, radiation-induced

Data Information
Data Availability
Archive is complete. No data sets are available for this experiment. Please Contact LSDA if you know of available data for this investigation.

Parameters
Cytogenesis
Damage, Chromosome, tradescantia (flowering plant), Microscopy, markers
Damage, Developmental abnormalities, tradescantia (flowering plant), Microscopy
Damage, Developmental abnormalities, wheat, plant, Microscopy
Humidity, ambient
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Mission/Study Information
Mission Launch/Start Date Landing/End Date Duration
Biosatellite II 09/07/1967 09/09/1967 2 days

Additional Information
Managing NASA Center
Ames Research Center (ARC)
Responsible NASA Representative
Ames Research Center LSDA Level 3
Project Manager: Helen Stewart
Institutional Support
National Aeronautics and Space Administration (NASA)
Alternate Experiment Name
BIO2-13
Protocol / Approach