Carbohydrates are not the sole factor determining desiccation tolerance in seeds of Ambidopsis thaliana
| Autor: | Jeroen A. Wilmer, Cees M. Karssen, Jaap J. J. Ooms |
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| Rok vydání: | 1994 |
| Předmět: |
Arabidopsis thaliana
desiccation tolerance Physiology Mutant carbohydrates Plant Science Desiccation tolerance chemistry.chemical_compound Arabidopsis Botany Genetics medicine Laboratorium voor Plantenfysiologie Dehydration Raffinose Abscisic acid biology fungi food and beverages Cell Biology General Medicine biology.organism_classification medicine.disease ABA chemistry Biochemistry EPS Desiccation Laboratory of Plant Physiology |
| Zdroj: | Physiologia Plantarum, 90, 431-436 Physiologia Plantarum 90 (1994) |
| ISSN: | 1399-3054 0031-9317 |
| DOI: | 10.1111/j.1399-3054.1994.tb08798.x |
| Popis: | ABA-dcficient (aba-1) and ABA-insensitive (abi3–1) double mutant seeds of Arabidopsis thaliana are desiccation-intolerant. Carbohydrates are supposed to fulfill a role in membrane protection during dehydration. Desiccation tolerance can be induced in douhle mutant seeds in vivo by supplying the ABA-analog LAB 173 711 to the plant root system. However. this does not lead to significant changes in the carbohydrate composition, in contrast, in vitro incubation of dissected immature seeds with ABA induced desiccation tolerance concomitant with an increase in the seed raffinose content. Thus, different desiccation tolerance-inducing treatments show contradictory effects on seed carbohydrate composition and accumulation. It is concluded that. although carbohydrates might be invohed in membrane protection or glass formation during dehydration, it is unlikely that they are the sole factor determining desiccation tolerance in Arabidopsis seeds |
| Databáze: | OpenAIRE |
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