THE INFLUENCE OF CARBON DIOXIDE ON TRADESCANTIA CHROMOSOME ABERRATIONS INDUCED BY RADIATIONS OF DIFFERENT ION DENSITIES
The influence of carbon dioxide on chromosome aberrations induced by gamma rays, x rays, 14.1-Mev neutrons, and fission neutrons was studied in Tradescantia. The addition of CO/sub 2/ to air caused a significant increase in the yield of x- and gamma -ray-induced chromosome exchanges and interstitial deletions. When l4.1-Mev neutrons are used, carbon dioxide has a slight but significant effect. With fission neutrons C0/sup 2/ had no effect. The hypothesis is made that carbon dioxide increases aberration frequency in irradiated material by decreasing viscosity, a known effect, and this promoting chromosome movement thereby favoring new reunions over restitution. Carbon dioxide need not be present during the irradiation to be effective provided that the irradiation in air immediately follows the pretreatment. (auth)
- Research Organization:
- Brookhaven National Lab., Upton, N.Y.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-15-002458
- OSTI ID:
- 4126938
- Journal Information:
- Exptl. Cell Research, Journal Name: Exptl. Cell Research Vol. Vol: 20
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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