Russian Journal of Biological Physics and Chemisrty Russian Journal of Biological Physics and Chemisrty АКТУАЛЬНЫЕ ВОПРОСЫ БИОЛОГИЧЕСКОЙ ФИЗИКИ И ХИМИИ 2499-9962 54316 Общая биофизика General biophysics Общая биофизика DYNAMICS OF GROWTH AND INTERCELLULAR WATER TRANSPORT IN INTACT ZEA MAIZE PLANTS UNDER CHANGE OF THE GAS COMPOSITION OF AIR ДИНАМИКА РОСТА И МЕЖКЛЕТОЧНОГО ВОДНОГО ПЕРЕНОСА В ИНТАКТНЫХ КОРНЯХ КУКУРУЗЫ ПРИ ИЗМЕНЕНИИ ГАЗОВОГО СОСТАВА АТМОСФЕРЫ Суслов М А Suslov M A makscom87@mail.ru Анисимов А. В. Anisimov A V. Казанский институт биохимии и биофизики - обособленное структурное подразделение ФГБУН "Федеральный исследовательский центр "Казанский научный центр Российской академии наук" ru Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS ru Казанский институт биохимии и биофизики, ФИЦ Казанский научный центр РАН Казань Россия Kazan Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS Kazan Russian Federation 25 09 2018 25 09 2018 3 3 489 494 20 09 2018 20 09 2018 https://rusjbpc.ru/en/nauka/article/54316/view

В данной работе с помощью спин-эхо метода ЯМР исследовано влияние газового состава атмосферного воздуха на динамику роста и межклеточного переноса воды в корнях интактных корней кукурузы. В работе использован оригинальный методический и технический подход, позволяющий проводить регистрацию параметров водного переноса и скорости роста растений непосредственно при изменении концентрации газов атмосферного воздуха. Было показано, что процессы транспорта воды и роста растений более чувствительны к снижению концентрации кислорода при его замещении азотом и углекислым газом. В условиях кислородного голодания происходило снижение как скорости роста, так и межклеточного переноса воды в корнях. При этом реакция водотранспортной системы растений на повышение концентрации СО2 имеет более выраженный характер по сравнению с повышением концентрации азота, что свидетельствует о преобладающей регуляторной роли углекислого газа в процессах газообмена и водообмена растений. Повышение концентрации кислорода в атмосфере до 60 % не приводило к заметным изменениям в скорости роста и межклеточного транспорта воды в корнях.

In this work the effect of the gas composition of the air on the dynamics of growth and intercellular transport of water in intact maize roots was studied using the spin-echo NMR method. The original methodical and technical approach, allowing to register the parameters of water transport and the growth rate in plants, directly under change of the concentration of air gases was used in the present work. It was shown that the processes of water transport and plant growth are more sensitive to decrease of oxygen concentration when it is replaced by nitrogen and carbon dioxide. Under conditions of oxygen deficiency both the growth rate and the intercellular transport of water in the roots was decreased. In this case the reaction of the water transport system of plant roots to elevated concentration of CO2 is more pronounced in comparison with the increase of the nitrogen concentration, which indicates the predominant regulatory role of carbon dioxide in the processes of gas exchange and water exchange in plants. An increase of the oxygen concentration in the atmosphere up to 60% did not lead to appreciable changes in the growth rate and intercellular transport of water in the roots.

 ядерно-магнитный резонанс межклеточный транспорт воды рост растений концентрация атмосферных газов nuclear magnetic resonance intercellular transport of water plant growth concentration of atmospheric gases

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