Responsiveness to abscisic acid of embryos of dormant oat (Avena sativa) seeds. Involvement of ABA-inducible proteins
| العنوان: | Responsiveness to abscisic acid of embryos of dormant oat (Avena sativa) seeds. Involvement of ABA-inducible proteins |
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| المؤلفون: | Françoise Corbineau, D. Come, Alexandra Poljakoff-Mayber |
| المصدر: | Physiologia Plantarum. 83:1-6 |
| بيانات النشر: | Wiley, 1991. |
| سنة النشر: | 1991 |
| مصطلحات موضوعية: | food.ingredient, Molecular mass, Physiology, organic chemicals, fungi, food and beverages, Cell Biology, Plant Science, General Medicine, Biology, Caryopsis, chemistry.chemical_compound, Avena, food, chemistry, Biochemistry, Germination, Genetics, Protein biosynthesis, Dormancy, Imbibition, Abscisic acid |
| الوصف: | Abscisic acid (ABA) inhibited the germination of embryos isolated from oat (Avena sativa L.) dormant seeds. The inhibition increased with ABA concentration. The embryos were 1 000 times more responsive to ABA at 30°C than at 10°C (30°C being the temperature at which dormancy is expressed). Exposure of embryos to 0.5 μM ABA for less than 8 h did not affect subsequent germination in water, and did not induce synthesis of new proteins. Exposure for at least 14 h was necessary to induce subsequent inhibition of germination. Such long exposure to ABA also affected protein synthesis. The molecular weights of the main ABA-inducible proteins were in the range between 44 and 24 kDa. Synthesis of small polypeptides, around 10 and 6 kDa was also induced. Synthesis of most of these ABA-inducible proteins disappeared when embryos were transferred to water. The general results suggest that the presence of ABA was necessary to maintain the synthesis of ABA-inducible proteins; on removal of ABA their synthesis ceased. No apparent correlation between these proteins and germination was revealed. However, a 26 kDa band was observed in the extract of control embryos imbibed for 24 h in water: this band was not present after 8 or 16 h imbibition and was also absent in extracts of ABA treated embryos. |
| تدمد: | 1399-3054 0031-9317 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ca9129305b621d87e3d0467677bb025 https://doi.org/10.1111/j.1399-3054.1991.tb01273.x |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....3ca9129305b621d87e3d0467677bb025 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 13993054 00319317 |
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