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Abstract <p>The effect of a new receptor-specific synthetic cytokinin <i>S-</i>CMBA, an agonist of the Arabidopsis AHK3 receptor, on the biochemical and physiological parameters of commercial potato (<i>Solanum tuberosum</i> L.) varieties grown under drought conditions was tested. Untreated plants and plants treated with the widely used cytokinin <i>N</i><sup>6</sup>-benzyladenine (BA) were used as controls. Treatment with both cytokinins under drought conditions resulted in a decrease in the intensity of water deficit symptoms in all varieties compared to the untreated control. At the same time, treatment of plants with <i>S-</i>CMBA reduced tuber yield losses by 1.5–2 times compared to the control, and treatment with BA by no more than 10%. It is assumed that <i>S-</i>CMBA and similar receptor-specific cytokinins can be used as protective bioregulators to increase the resistance of potato plants to water deficit.</p>

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Receptor-Specific Synthetic Cytokinin S-CMBA Enhances Drought Tolerance in Commercial Varieties of Solanum tuberosum L.

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  • 发表日期：

    2025年4月1日

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  • O. O. Kolachevskaya,
  • E. M. Savelieva,
  • Y. V. Ivanov,
  • Y. A. Myakushina,
  • S. V. Deigraf,
  • G. A. Romanov

摘要

Abstract

The effect of a new receptor-specific synthetic cytokinin S-CMBA, an agonist of the Arabidopsis AHK3 receptor, on the biochemical and physiological parameters of commercial potato (Solanum tuberosum L.) varieties grown under drought conditions was tested. Untreated plants and plants treated with the widely used cytokinin N6-benzyladenine (BA) were used as controls. Treatment with both cytokinins under drought conditions resulted in a decrease in the intensity of water deficit symptoms in all varieties compared to the untreated control. At the same time, treatment of plants with S-CMBA reduced tuber yield losses by 1.5–2 times compared to the control, and treatment with BA by no more than 10%. It is assumed that S-CMBA and similar receptor-specific cytokinins can be used as protective bioregulators to increase the resistance of potato plants to water deficit.