Comparative radiomimetic effect of emulsin, cycasin, methylazoxymethanol and X-rays in Zamia Integrifolia
| Autor: | E.D. Porter, H.J. Teas |
|---|---|
| Rok vydání: | 1971 |
| Předmět: |
chemistry.chemical_classification
biology Zamia integrifolia food and beverages Glycoside Plant Science biology.organism_classification Plant cell chemistry.chemical_compound Zamia Aglycone chemistry Cycasin Botany Allium Chemical inhibition Agronomy and Crop Science Ecology Evolution Behavior and Systematics |
| Zdroj: | Radiation Botany. 11:21-26 |
| ISSN: | 0033-7560 |
| DOI: | 10.1016/s0033-7560(71)91295-6 |
| Popis: | Root tips of Zamia integrifolia were treated with cycasin (an azoxyglycoside), emulsin (β-glucosidase), an incubated mixture of cycasin and emulsin, methylazoxymethanol (the aglycone of cycasin) and X-rays. Tissues of Zamia contain both azoxyglycosides and emulsin. Allium cepa roots were treated and used as a non-cycad control. The incidence of anaphase bridges was utilized as an index for comparisons. Chemical and radiation treatments resulted in significant increases in the incidence of chromosome bridges in both Zamia and Allium. Certain differences in results between treatments and between Allium and Zamia indicate that in the intact Zamia the emulsin and cycasin are not active radiomimetically. However, both cycasin and emulsin as well as MAM produce significant damage in the intact root cells when treated. This indicates some protective mechanism, either compartmentalization or chemical inhibition, in the intact plant in normal conditions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|