Russian Journal of Biological Physics and Chemisrty Russian Journal of Biological Physics and Chemisrty АКТУАЛЬНЫЕ ВОПРОСЫ БИОЛОГИЧЕСКОЙ ФИЗИКИ И ХИМИИ 2499-9962 54348 ЭКОЛОГИЧЕСКАЯ БИОФИЗИКА ECOLOGICAL BIOPHYSICS ЭКОЛОГИЧЕСКАЯ БИОФИЗИКА EFFECTS OF CHRONIC IRRADIATION IN LOW DOSES ON ELECTROGENESIS AND PHOTOSYNTHETIC ACTIVITY OF PEA SEEDLINGS ВЛИЯНИЕ ХРОНИЧЕСКОГО ОБЛУЧЕНИЯ В МАЛЫХ ДОЗАХ НА ЭЛЕКТРОГЕНЕЗ И ФОТОСИНТЕТИЧЕСКУЮ АКТИВНОСТЬ ПРОРОСТКОВ ГОРОХА Гринберг М А Grinberg M A mag1355@yandex.ru Громова Е Н Gromova E N Гудков С В Gudkov S V Воденеев В А Vodeneev V A Нижегородский государственный университет им. Н.И. Лобачевского ru Lobachevsky State University of Nizhni Novgorod ru Нижегородский государственный университет им. Н.И. Лобачевского ru Lobachevsky State University of Nizhni Novgorod ru Нижегородский государственный университет им. Н.И. Лобачевского ru Lobachevsky State University of Nizhni Novgorod ru Нижегородский государственный университет им. Н.И. Лобачевского ru Lobachevsky State University of Nizhni Novgorod ru 25 09 2018 25 09 2018 3 3 680 685 20 09 2018 20 09 2018 https://rusjbpc.ru/en/nauka/article/54348/view

Изучение физиологических процессов растений и их адаптации к стресс-факторам в условиях постоянно действующего повышенного радиационного фона значимо в связи с наличием радиационных загрязнений, связанных с деятельностью человека. Целью работы является изучение влияния хронического облучения в малой дозе на электрогенез и фотосинтетическую активность проростков гороха. Объект исследований - 17-дневные проростки гороха посевного ( Pisum sativum L.). Источник ионизирующего излучения (ИИ) - система 90Sr-90Y с активностью 0,1 МБк. Суммарная накопленная доза составляла около 12,7 мГр. В ходе работы выполнены измерения активности фотосинтеза, параметров электрических сигналов и вызываемых ими ответов фотосинтеза. Обнаружен стимулирующий эффект ИИ на интенсивность ассимиляции (А) и максимальную эффективность фотосинтеза (Fv/Fm) при неизменных значениях квантовых выходов фотосистем I и II (Y(I) и Y(II)). Амплитуда электрических сигналов, а также интенсивность вызываемых ими ответов фотосинтеза демонстрировали тенденцию к снижению.

The study of the physiological processes of plants and their adaptation to stressors in a permanent high radiation background is significant due to the presence of radiation pollution associated with human activities. The aim of the work is to study the effect of chronic irradiation in a low dose on the electrogenesis and photosynthetic activity of pea seedlings. The object of research is 17-day-old seedlings of peas ( Pisum sativum L.). The source of ionizing radiation (IR) is a 90Sr-90Y system with an activity of 0.1 MBq. The total accumulated dose was about 12.7 mGy. In the work, measurements of the activity of photosynthesis, the parameters of electrical signals and the photosynthetic responses caused by them were performed. The stimulating effect of IR on the intensity of assimilation (A) and the maximum efficiency of photosynthesis (Fv/Fm) were found at constant values of the quantum yields of photosystems I and II (Y(I) and Y(II)). The amplitude of electrical signals, as well as the intensity of photosynthetic responses caused by them, showed a tendency to decrease.

 ионизирующее излучение малые дозы регуляция фотосинтеза электрические сигналы ionizing radiation low doses regulation of photosynthesis electrical signals

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