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Information × Registration Number 0224U001177, 0119U100251 , R & D reports Title Hormonal regulation of cereals growth and development affected by negative climatic factors popup.stage_title Head Kosakivska Iryna V., Доктор біологічних наук Registration Date 18-01-2024 Organization M.G. Kholodny Institute of Botany, NAS of Ukraine popup.description2  The adaptability of winter wheat, spelt, and rye to varying temperature conditions and moderate soil drought was assessed based on key phenotypic indicators of metabolic processes. Moderate soil drought exhibited more pronounced and prolonged negative effects. A comprehensive investigation of the balance of five classes of endogenous phytohormones, including abscisic, indole-3-acetic, salicylic acid, gibberellins, and cytokinins, was conducted using the HPLC-MS method in the organs of control plants, post-stress plants, and those in the recovery phase. This study unveiled common characteristics as well as organ- and species-specific traits in the reorganization of hormonal balance at different stages of stress and during the recovery period. As a result, an original model explaining the role of phytohormones in shaping the stress resistance of cultivated cereals was developed. The study confirmed that priming seeds with a 10-6M ABA solution can induce resistance to heat stress and moderate soil drought in winter wheat and spelt while expediting post-stress recovery. Furthermore, priming rye grains with a 10-6M zeatin solution was found to support plant growth and alleviate the adverse effects on the equilibrium of endogenous cytokinins during exposure to heat and cold temperature stresses. These findings provide the groundwork for creating an environmentally-friendly method for enhancing the resistance of cereal crops.The research included a range of structural and functional studies, uncovering specific features related to stress-induced accumulation of free amino acids, phenols, and flavonoids. It investigated the content and proportions of photosynthetic pigments, lipoxygenase activity, and the ultrastructural characteristics of leaf mesophyll cells. The study observed that the accumulation of proline was a universal response to all abiotic stresses. The pigment complex of winter wheat demonstrated the highest resilience to heat stress and moderate soil drought. Product Description popup.authors Babenko Lidiia Mykhailivna Vasyuk Valentina Anatolievna Vedenichova Nina Petrivna Voytenko Lesya Vasylivna Romanenko Kateryna Oleksandrivna Futornа Oksаnа Andrievna Shcherbatiuk Mykola M. popup.nrat_date 2024-01-18 Close