Russian Journal of Biological Physics and Chemisrty Russian Journal of Biological Physics and Chemisrty АКТУАЛЬНЫЕ ВОПРОСЫ БИОЛОГИЧЕСКОЙ ФИЗИКИ И ХИМИИ 2499-9962 83361 10.29039/rusjbpc.2023.0618 ОБЩАЯ И МОЛЕКУЛЯРНАЯ БИОФИЗИКА GENERAL AND MOLECULAR BIOPHYSICS ОБЩАЯ И МОЛЕКУЛЯРНАЯ БИОФИЗИКА IDENTIFICATION OF POTENTIAL-GENERATING IONS IN THE NUTRIENT SOLUTION OF BIOELECTROCHEMICAL SYSTEM ПОИСК ПОТЕНЦИАЛОБРАЗУЮЩИХ ИОНОВ В ПИТАТЕЛЬНОМ РАСТВОРЕ БИОЭЛЕКТРОХИМИЧЕСКОЙ СИСТЕМЫ Кулешова Т. Э. Kuleshova T. E. kuleshova@agrophys.ru Желначева П. В. Zhelnacheva P. V. Гасиева З. А. Gasieva Z. A. Галушко А. С. Galushko A. S. Панова Г. Г. Panova G. G. gaiane@inbox.ru Агрофизический научно-исследовательский институт Санкт-Петербург Россия Agrophysical Research Institute Saint Petersburg Russian Federation Институт аналитического приборостроения РАН Санкт-Петербург Россия Institute for Analytical Instrumentation, Russian Academy of Sciences Saint Petersburg Russian Federation Агрофизический научно-исследовательский институт Санкт-Петербург Россия Agrophysical Research Institute Saint Petersburg Russian Federation Агрофизический научно-исследовательский институт Санкт-Петербург Россия Agrophysical Research Institute Saint Petersburg Russian Federation Агрофизический научно-исследовательский институт Санкт-Петербург Россия Agrophysical Research Institute Saint Petersburg Russian Federation Агрофизический научно-исследовательский институт Санкт-Петербург Россия Agrophysical Research Institute Saint Petersburg Russian Federation 27 05 2024 27 05 2024 8 3 258 264 20 07 2023 https://rusjbpc.ru/en/nauka/article/83361/view

В работе рассмотрено влияния состава питательного раствора на формирование разности потенциалов в корнеобитаемой среде и проведен поиск возможных потенциалобразующих ионов в биоэлектрохимических системах, основанных на электроактивных растительно-микробных взаимодействиях. Измерена разность потенциалов в корнеобитаемой среде при выращивании растений салата по технологии панопоники с использованием питательных растворов с увеличенным в два раза содержанием сульфата магния, хлорида калия и дигидроортофосфата калия. Проанализированы изменения электропроводности питательных растворов в процессе вегетационного периода и различия в водородных показателях и концентрациях ионов кальция, калия, аммония, нитрата в верхней и нижней приэлектродных областях биоэлектрохимических систем. Увеличение концентрации хлорида калия и дигидроортофосфата калия в питательном растворе привело к снижению и биомассы и среднего значения напряжения до 221 мВ и 188 мВ, соответственно, относительно характерной для контрольного варианта с классическим раствором Кнопа разности потенциалов составляющей 213 мВ. Удвоение концентрации сульфата магния, наоборот, вызвало повышение разности потенциалов до среднего значения 263 мВ и увеличения биомассы более чем на 30% относительно контроля. Вероятно, сульфат магния играет потенциалобразующую роль в формировании электрогенных реакций в системе корнеобитаемая среда-растения.

The work considers the effect of the nutrient solution composition on the potential difference formation in the root environment. Identification of possible potential-generating ions in bioelectrochemical systems based on electactive plant and microbial interactions was carried out. The electropotential difference in the root environment was measured when growing lettuce with a nutrient solution with a double increased content of magnesium sulfate, potassium chloride and potassium dihydortophosphate. Changes in the electrical conductivity of nutrient solutions in the process of lettuce growing and the differences in the pH and concentrations of calcium, potassium, ammonium, nitrate ions in the upper and lower electrode areas of bioelectrochemical systems are analyzed. An increase in the concentration of potassium chloride and potassium dihydortophosphate in a nutrient solution led to a decrease in both biomass and the average voltage value to 221 mV and 188 mV, respectively, relatively characteristic of the control option with a classic solution of the potential difference 213 mV. The doubling of the magnesium sulfate concentration, on the contrary, caused an increase in the potential difference to an average value of 263 mV and an increase in biomass by more than 30% relative to control. Probably, magnesium sulfate plays a potential role in the formation of electogenic reactions in the root environment.

 растительно-микробный топливный элемент панопоника углеродный войлок салат plant-microdal fuel cell panoponica carbon felt lettuce Работа выполнена при финансовой поддержке гранта Президента Российской Федерации (МК-4397.2022.5).

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