Genetic basis for using Tradescantia clone 4430 as an environmental monitor of mutagens
The Tradescantia stamen hair system developed by the late Dr. Arnold H. Sparrow has been used in a wide variety of radiobiological studies, and more recently as an environmental monitor for assessing the potential genetic hazards of various gaseous chemicals of both industrial and natural origin. The use of this system as a genetic monitor necessitates a thorough genetic analysis of the marker employed to measure mutagenicity. The phenotypic change in color from blue to pink in either petal or stamen hair cells has been used as a genetic marker under the assumption that the petal and stamen hair cells are heterozygous for blue, and if the dominant allele for blue color mutates or is lost, the recessive allele determines that the daughter cells will be pink. It is the purpose of this communication to present the results of genetic tests by conventional breeding methods involving the pink locus in Tradescantia clone 4430, the diploid clone used exclusively in the Mobile Monitoring Vehicle at Brookhaven National Laboratory. Confirmation of a genetic, as opposed to a physiological, origin of the pink color in the petal and stamen hair cells of Tradescantia clone 4430 is essential to evaluating the validity of this test system.
- Research Organization:
- Brookhaven National Lab., Upton, NY
- OSTI ID:
- 5705274
- Journal Information:
- J. Hered.; (United States), Vol. 71
- Country of Publication:
- United States
- Language:
- English
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FLOWERS
GENETIC VARIABILITY
TRADESCANTIA
MUTAGEN SCREENING
CHROMOSOMES
CLONING
COMPARATIVE EVALUATIONS
GENES
GENETIC EFFECTS
MEASURING METHODS
MORPHOLOGY
MUTAGENS
MUTATION FREQUENCY
PHYSIOLOGY
BIOLOGICAL EFFECTS
BIOLOGICAL VARIABILITY
PLANTS
SCREENING
560303* - Chemicals Metabolism & Toxicology- Plants- (-1987)