Abscisic acid and osmotic stress or slow drying independently induce desiccation tolerance in mutant seeds of Arabidopsis thaliana
| Autor: | Cees M. Karssen, Renske van der Veen, Jaap J. J. Ooms |
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| Rok vydání: | 1994 |
| Předmět: |
Osmotic shock
biology Physiology organic chemicals fungi Mutant food and beverages Endogeny Cell Biology Plant Science General Medicine medicine.disease biology.organism_classification Cell biology Desiccation tolerance chemistry.chemical_compound chemistry Arabidopsis Botany medicine Genetics Arabidopsis thaliana Dehydration Abscisic acid |
| Zdroj: | Physiologia Plantarum. 92:506-510 |
| ISSN: | 1399-3054 0031-9317 |
| DOI: | 10.1034/j.1399-3054.1994.920321.x |
| Popis: | Action of endogenous abscisic acid (ABA) is absent in the ABA-deficient and -insensitive double mutant (aba-1abi3–1) seeds of Arabidopsis thaliana. Thus, responses to osmotic stress and dehydration can be studied without interference of endogenous ABA. Seeds of this double mutunt are viable hut desiceation-intolerant. However, desiccation tolerance can he induced by either (1) slow dehydration of immature seeds; (2) treatment of immature seeds with osmotica or; (31 due to the leakiness of the ABA-insensitivty mutation, by application of exogenous ABA. Consequently it is concluded that either ABA or osmotic- or dehydration-stress and related gene expression meets the minimal requirements for acquisition of desiccation tolerance in seeds of Arabidopsis thalianna. |
| Databáze: | OpenAIRE |
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