ENDOGENOUS BRASSINOSTEROIDS ARE INVOLVED IN THE FORMATION OF SALT RESISTANCE OF PLANTS

L. V. Kolomeichuk; Коломейчук Л. В.; E. D. Danilova; Данилова Е. Д.; O. K. Murgan; Мурган О. К.; A. L. Sauchuk; Савчук А. Л.; R. P. Litvinovskaya; Литвиновская Р. П.; V. А. Khripach; Хрипач В. А.; V. V. Kuznetsov; Кузнецов В. В.; M. V. Efimova; Ефимова М. В.

doi:10.31857/S2686738923600164

ENDOGENOUS BRASSINOSTEROIDS ARE INVOLVED IN THE FORMATION OF SALT RESISTANCE OF PLANTS

Authors: Kolomeichuk L.V.¹, Danilova E.D.¹, Murgan O.K.¹, Sauchuk A.L.², Litvinovskaya R.P.², Khripach V.А.², Kuznetsov V.V.¹^,3, Efimova M.V.¹
Affiliations:
1. National research Tomsk State University
2. Institute of Bioorganic Chemistry, National Academy of Sciences of Belarus
3. Timiryazev Institute of Plant Physiology, Russian Academy of Sciences
Issue: Vol 511, No 1 (2023)
Pages: 365-370
Section: Articles
URL: https://rjmseer.com/2686-7389/article/view/651089
DOI: https://doi.org/10.31857/S2686738923600164
EDN: https://elibrary.ru/JDCWCH
ID: 651089

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Abstract

For the first time it was shown that potato plants responded to salt stress by changing the profile of endogenous brassinosteroids (BS). At the same time, a group of 6-keto-BS was identified, the content of which, unlike other analyzed groups of hormones, increased significantly during salinization. It was found that a 10-fold decrease in the level of endogenous BS in mutant Arabidopsis thaliana plants with impaired biosynthesis (det2) (or reception (bri1)) of phytosteroids leads to a decrease in their salt resistance, as evidenced by a decrease in the efficiency of photochemical processes of photosystem II (PSII) and inhibition of growth. The presented data confirm the idea of the involvement of endogenous BS in the formation of salt resistance of plants.

Keywords

brassinosteroids, chloride salinity, photosystem II, Arabidopsis thaliana, Solanum tuberosum

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