التفاصيل البيبلوغرافية
| العنوان: |
Priming of seeds with cyanobacteria improved tolerance in wheat (Triticum aestivum L.) during post-germinative drought stress. |
| المؤلفون: |
Sneha, G. R., Govindasamy, Venkadasamy, Singh, Pradeep Kumar, Kumar, Sarvendra, Abraham, Gerard |
| المصدر: |
Journal of Applied Phycology; Jun2024, Vol. 36 Issue 3, p1233-1246, 14p |
| مستخلص: |
Seed priming is beneficial in improving the germination and subsequent growth performance of seeds under normal as well as stressed conditions. Mostly, natural and chemical substances have been used for priming. Microbes are also used in priming to counter the negative effects of stress and to improve productivity. In this context, the potential of cyanobacteria to secrete growth-promoting substances makes them ideal candidates for seed priming. Therefore, in the present study, seed priming was carried out using cyanobacteria to investigate its role in imparting drought stress tolerance during post-germination stages in the drought-sensitive cultivar (HD-2967) of wheat. For this, the wheat seeds were subjected to priming with cyanobacteria and the plants germinated were subjected to drought stress during tillering stage. Plants exposed to drought stress showed significant reduction in growth, pigment content and photosynthetic activity. However, plants developed from seeds primed with cyanobacteria, upon drought stress maintained better growth rate, relative water content, chlorophyll, carotenoid and photosynthetic activity. Furthermore, the plants developed from primed seeds showed less accumulation of superoxides, peroxides and lipid peroxidation products and higher activity of ascorbate peroxidise, catalase and glutathione reductase. On the other hand, plants exposed to stress without priming showed enhanced accumulation of free radicals and lipid peroxidation products and lower activity of antioxidant enzymes. The results show that seed priming with cyanobacteria improved growth during post germination stages in wheat plants exposed to drought stress through modulation of physiological and biochemical responses. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
