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Registration Number

0216U010255, 0111U009455 , R & D reports

Title

Study of functions of signal messengers and bioregulators at formation of plants resistance to stressors influence

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Head

Kolupaev Yuriy Yevgenovich, Доктор біологічних наук

Registration Date

26-12-2016

Organization

V.V. Dokuchaev Kharkiv National Agrarian University

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It was found that formation of plant cross-resistance to osmotic shock and hyperthermia occurs with the participation of hydrogen peroxide produced by activation of NADPH oxidase and superoxide dismutase. The process involves increased activity of antioxidant enzymes, and changes in the content of low-molecular-weight protectors. In the formation of plant heat resistance after a short heat hardening nitric oxide along with the ROS is involved, herewith the inhibition of hydrogen peroxide formation by corresponding inhibitors reduces elevated levels of nitric oxide and vice versa. When plant heat resistance is induced by exogenous calcium, nitrogen oxide or hydrogen peroxide the functional interaction of endogenous Ca2+, NO and H2O2 is occurring. In the process of inducing resistance of plants to abiotic stressors by salicylic acid and its structural analogs and mimetics the ROS, produced by the activation of NADPH oxidase and extracellular peroxidase, are participating. The brassinosteroid signal transduction, leading to increased resistance of plants to stressors action, involves ROS and calcium ions coming into cytosol from different compartments. Exogenous jasmonic acid induces heat-resistance of seedlings and adult plants of millet, as well as their resistance to adverse soil conditions. The induction of resistance is manifested in a reduced accumulation of lipid peroxidation products in tissues of plants under stress conditions and increased chlorophyll content in them. Also, pre-sowing millet seeds treatment with JA increases grain plant productivity by 16-20%.

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Вайнер Андрій Олександрович
Карпець Юрій Вікторович
Лугова Ганна Арнольдівна
Обозний Олександр Іванович
Швиденко Микола Володимирович
Ястреб Тетяна Олегівна

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2020-04-02