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Information × Registration Number 0216U009208, 0115U003617 , R & D reports Title Cellular and molecular mechanisms of regulation of photosynthesis in biotechnological plants resistant to abiotic stresses popup.stage_title Head Stasik Oleg, Registration Date 04-01-2017 Organization Institute of Plant Physiology and Genetics NASU popup.description2 The peculiarities of reaction of photosynthetic apparatus and its regulatory systems on soil drought and high temperature stress in maize plants of the inbred line L370 and forms with reduced expression of gene of proline dehydrogenase ProDH obtained by Agrobacterium-mediated genetic transformation were studied. It is found that the soil drought equally inhibited the rate of photosynthesis in both forms, but water use efficiency in the transformed plants declined less and was 46% higher than the original line. The intensity of dark respiration significantly decreased in both forms, but was approximately 2 times higher in plants with reduced expression of proline dehydrogenase, which indicates better preservation of energy and plastic metabolism of leaves cells. Water stress caused a significant increase in antioxidant enzyme activity in leaves of wild-type plants, however in transformed plants, the activity of superoxide dismutase increased only. The increase in leaf temperature decreased less the rate of photosynthesis in the leaves of transformed plants than the original lines. Thus, the adaptive capacity of the photosynthetic apparatus of plants with reduced expression of proline dehydrogenase was improved comparing to the original form due to increased activities of respiration and chloroplast's antioxidant system. Product Description popup.authors Кірізій Дмитро Анатолійович Міхно Алла Іванівна Осипова Оксана Леонідівна Поліщук Ганна Іванівна Прядкіна Галина Олексіївна Рижикова Поліна Львівна Ситник Сергій Костянтинович Соколовська-Сергієнко Оксана Григорівна popup.nrat_date 2020-04-02 Close