Preliminary Treatment by Exogenous 24-Epibrassinolide Influences Burning-Induced Electrical Signals and Following Photosynthetic Responses in Pea (<i>Pisum sativum</i> L.)
Long-distance electrical signals (ESs) are an important mechanism of induction of systemic adaptive changes in plants under local action of stressors. ES-induced changes in photosynthesis and transpiration play a key role in these responses increasing plant tolerance to action of adverse factors. As...
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2024-11-01
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| author | Ekaterina Sukhova Lyubov Yudina Elizaveta Kozlova Vladimir Sukhov |
| author_facet | Ekaterina Sukhova Lyubov Yudina Elizaveta Kozlova Vladimir Sukhov |
| author_sort | Ekaterina Sukhova |
| collection | DOAJ |
| description | Long-distance electrical signals (ESs) are an important mechanism of induction of systemic adaptive changes in plants under local action of stressors. ES-induced changes in photosynthesis and transpiration play a key role in these responses increasing plant tolerance to action of adverse factors. As a result, investigating ways of regulating electrical signaling and ES-induced physiological responses is a perspective problem of plant electrophysiology. The current work was devoted to the analysis of the influence of preliminary treatment (spraying) by exogenous 24-epibrassinolide (EBL) on burning-induced ESs and following photosynthetic and transpiratory responses in pea (<i>Pisum sativum</i> L.). It was shown that preliminary treatment by 1 µM EBL (1 day before the experiment) increased the amplitude of burning-induced ESs (variation potentials) in leaves and decreased the time of propagation of these signals from the stem to the leaf. The EBL treatment weakly influenced the magnitudes of burning-induced decreasing the photosynthetic linear electron flow and CO<sub>2</sub> assimilation, but these changes were accelerated. Burning-induced changes in the cyclic electron flow around photosystem I were also affected by the EBL treatment. The influence of the EBL treatment on burning-induced changes in the stomatal water conductance was not observed. Our results show that preliminary treatment by EBL can be used for the modification of electrical signals and following photosynthetic responses in plants. |
| format | Article |
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| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
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| series | Plants |
| spelling | doaj-art-4a3c7060a22c48e4916224dba1e43fc82025-08-20T01:55:28ZengMDPI AGPlants2223-77472024-11-011323329210.3390/plants13233292Preliminary Treatment by Exogenous 24-Epibrassinolide Influences Burning-Induced Electrical Signals and Following Photosynthetic Responses in Pea (<i>Pisum sativum</i> L.)Ekaterina Sukhova0Lyubov Yudina1Elizaveta Kozlova2Vladimir Sukhov3Department of Biophysics, N.I. Lobachevsky State University of Nizhny Novgorod, 603950 Nizhny Novgorod, RussiaDepartment of Biophysics, N.I. Lobachevsky State University of Nizhny Novgorod, 603950 Nizhny Novgorod, RussiaDepartment of Biophysics, N.I. Lobachevsky State University of Nizhny Novgorod, 603950 Nizhny Novgorod, RussiaDepartment of Biophysics, N.I. Lobachevsky State University of Nizhny Novgorod, 603950 Nizhny Novgorod, RussiaLong-distance electrical signals (ESs) are an important mechanism of induction of systemic adaptive changes in plants under local action of stressors. ES-induced changes in photosynthesis and transpiration play a key role in these responses increasing plant tolerance to action of adverse factors. As a result, investigating ways of regulating electrical signaling and ES-induced physiological responses is a perspective problem of plant electrophysiology. The current work was devoted to the analysis of the influence of preliminary treatment (spraying) by exogenous 24-epibrassinolide (EBL) on burning-induced ESs and following photosynthetic and transpiratory responses in pea (<i>Pisum sativum</i> L.). It was shown that preliminary treatment by 1 µM EBL (1 day before the experiment) increased the amplitude of burning-induced ESs (variation potentials) in leaves and decreased the time of propagation of these signals from the stem to the leaf. The EBL treatment weakly influenced the magnitudes of burning-induced decreasing the photosynthetic linear electron flow and CO<sub>2</sub> assimilation, but these changes were accelerated. Burning-induced changes in the cyclic electron flow around photosystem I were also affected by the EBL treatment. The influence of the EBL treatment on burning-induced changes in the stomatal water conductance was not observed. Our results show that preliminary treatment by EBL can be used for the modification of electrical signals and following photosynthetic responses in plants.https://www.mdpi.com/2223-7747/13/23/329224-epibrassinolideelectrical signalsvariation potentialphotosynthesistranspirationpea |
| spellingShingle | Ekaterina Sukhova Lyubov Yudina Elizaveta Kozlova Vladimir Sukhov Preliminary Treatment by Exogenous 24-Epibrassinolide Influences Burning-Induced Electrical Signals and Following Photosynthetic Responses in Pea (<i>Pisum sativum</i> L.) Plants 24-epibrassinolide electrical signals variation potential photosynthesis transpiration pea |
| title | Preliminary Treatment by Exogenous 24-Epibrassinolide Influences Burning-Induced Electrical Signals and Following Photosynthetic Responses in Pea (<i>Pisum sativum</i> L.) |
| title_full | Preliminary Treatment by Exogenous 24-Epibrassinolide Influences Burning-Induced Electrical Signals and Following Photosynthetic Responses in Pea (<i>Pisum sativum</i> L.) |
| title_fullStr | Preliminary Treatment by Exogenous 24-Epibrassinolide Influences Burning-Induced Electrical Signals and Following Photosynthetic Responses in Pea (<i>Pisum sativum</i> L.) |
| title_full_unstemmed | Preliminary Treatment by Exogenous 24-Epibrassinolide Influences Burning-Induced Electrical Signals and Following Photosynthetic Responses in Pea (<i>Pisum sativum</i> L.) |
| title_short | Preliminary Treatment by Exogenous 24-Epibrassinolide Influences Burning-Induced Electrical Signals and Following Photosynthetic Responses in Pea (<i>Pisum sativum</i> L.) |
| title_sort | preliminary treatment by exogenous 24 epibrassinolide influences burning induced electrical signals and following photosynthetic responses in pea i pisum sativum i l |
| topic | 24-epibrassinolide electrical signals variation potential photosynthesis transpiration pea |
| url | https://www.mdpi.com/2223-7747/13/23/3292 |
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