Academic Journal
The crucial role of gibberellic acid on germination of drought-resistant upland rice
| العنوان: | The crucial role of gibberellic acid on germination of drought-resistant upland rice |
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| المؤلفون: | J.-Z. LI, M.-Q. LI, Y.-C. HAN, H.-Z. SUN, Y.-X. DU, Q.-Z. ZHAO |
| المصدر: | Biologia Plantarum, Vol 63, Iss 1, Pp 529-535 (2019) |
| بيانات النشر: | Institute of Experimental Botany of the Czech Academy of Sciences, 2019. |
| سنة النشر: | 2019 |
| المجموعة: | LCC:Biology (General) LCC:Plant ecology |
| مصطلحات موضوعية: | abscisic acid, α-amylase, expansin, oryza sativa, polyethylne glycol, rna sequencing, Biology (General), QH301-705.5, Plant ecology, QK900-989 |
| الوصف: | Drought is one of the main factors restricting seed germination. In order to reveal the physiological and molecular mechanisms of improved germination ability in upland rice under drought stress, we investigated the seed germination characteristics and the expression of genes related to gibberellic acid (GA3), α-amylase, and expansin of upland rice cultivar IRAT109 and lowland rice cultivar Yuefu under drought stress induced by 15 % (m/v) polyethylene glycol (PEG) and GA3 application. Seed germination decreased in upland rice and lowland rice under PEG-induced stress; upland rice was less affected than lowland rice. The germination vigour, root length, and shoot length were significantly higher in upland rice than in lowland rice under PEG stress. The GA3/abscisic acid ratio, α-amylase activity, and soluble sugar content in the germinated seeds were higher in upland rice. An RNA sequencing analysis revealed that 14 genes related to gibberellins, α-amylase, and expansin had a significantly higher expression in upland rice than in lowland rice. On the other hand, application of GA3 significantly increased the germination vigour, shoot length, root length, α-amylase activity, and soluble sugar content in upland rice. It also induced higher expressions of α-amylase and expansin related genes in upland rice. The results indicate that GA3 plays an important role in promoting seed germination in upland rice under drought stress by increasing the expressions of α-amylase and expansin genes. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1573-8264 |
| Relation: | https://bp.ueb.cas.cz/artkey/bpl-201901-0090_the-crucial-role-of-gibberellic-acid-on-germination-of-drought-resistant-upland-rice.php; https://doaj.org/toc/1573-8264 |
| DOI: | 10.32615/bp.2019.049 |
| URL الوصول: | https://doaj.org/article/d69b3ec200ad48d5b2008d7c8eee6011 |
| رقم الانضمام: | edsdoj.69b3ec200ad48d5b2008d7c8eee6011 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 15738264 |
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| DOI: | 10.32615/bp.2019.049 |