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Information × Registration Number 0315U005085, 0115U005596 , R & D reports Title To investigate the value of components of jasmonate and salicylate signaling in plant adaptation to abiotic stressors popup.stage_title Встановити роль компонентів жасмонатного і саліцилатного сигналінгу в адаптації рослин до дії абіотичних стресорів Head Kolupaev Yuriy Evgenovych, Доктор біологічних наук Registration Date 16-12-2015 Organization V.V.Dokuchaev Kharkiv national agrarian university popup.description2 The involvement of nitric oxide and hydrogen peroxide as the signal mediators in the processes of induction of heat resistance of wheat (Triticum aestivum L.) plants at early stages of development by the influence of exogenous jasmonic (JA) and salicylic (SA) acids have been investigated. The effect of transitional increase of nitric oxide content in roots of plantlets was established at their treatment with JA and SA, which one was removed by the action of antioxidant dimethylthiourea (DMTU) and consequently was dependent on the formation of reactive oxygen species. The effect of induction of plants resistance by JA and SA was levelled by the preliminary treatment with the antioxidant DMTU, scavenger of NO PTIO (2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) and inhibitor of NO-synthase L-NAME (NG-nitro-L-arginine methyl ester). Thus NO and hydrogen peroxide play the role in the processes of JA- and SA-induced development of heat resistance of wheat plantlets. The response of Arabidopsis plants (Arabidopsis thaliana L.) of wild type (Col-0), mutants on the jasmonate signalling (jin1) and transformants by the gene of bacterial salicylate hydroxylase (NahG), which one differs the low content of salicylic acid, to the salt stress (24 h, 200 mM NaCl) has been compared. Growth of wild type plants after the salt stress was moderately depressed, growth of mutants jin1 was suppressed more essentially, and the effect of NaCl on the growth of transformants NahG was poorly expressed. Thus there are the distinctions in contribution of low-molecular protective compounds (proline, carbohydrates, anthocyans and flavonoids) in the adaptation to salt stress of Arabidopsis plants of wild­type, mutants on the jasmonate signalling (jin1) and transformants by the gene of bacterial salicylate hydroxylase (NahG). The influence of spraying with solutions of JA on drought resistance of barley (Hordeum vulgare L.) plants in soil culture, their productivity in the conditions of model field experiment and the resistance to fungal infections have been investigated. The treatment of plants with JA partially removed the effect of growth inhibition, caused by the drought, and reduced the water deficiency. In the conditions of normal humidification the treatment with JA reduced the amount of plants, struck with pathogens of root rots. Under the influence of JA in optimum concentration in the conditions of field experiment the total biomass of above-ground part of plants and grain weight increased, the development of dark-brown spot was slowed down. Product Description popup.authors Карпець Юрій Вікторович Лугова Ганна Арнольдівна Обозний Олександр Іванович Фірсова Катерина Миколаївна Швиденко Микола Володимирович Ястреб Тетяна Олегівна popup.nrat_date 2020-04-02 Close