Content and balance of endogenous brassinosteroids in potato microclones is determined by the organ specificity and term of ripening variety

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Abstract


The endogenous brassinosteroids content in the roots and shoots of early- and mid-season potato microclones was determined. Among the analyzed plant steroid hormones were representatives of brassinolide group, 24-epi- brassinolide group, 28-homobrassinolide group, B-lactones and B-ketons. The level of all brassinosteroids in plant roots exceeded significantly that in shoots, irrespective of the potato term of ripening. Of interest is the fact that in plant shoots there were no BS groups of 24-epibrassinolide. We have first found a relationship between the terms of potato ripening and endogenous content of different BS groups in the aerial and underground plant parts; we have also assessed the age-related changes in the content of BSs, as well as their ratio in the potato plants of the Red Scarlett variety.


About the authors

M. V. Efimova

Tomsk State University

Author for correspondence.
Email: stevmv555@gmail.com

Russian Federation, 34a, Lenina prospect, Tomsk, 634050

R. P. Litvinovskaya

The Institute of Bioorganic Chemistry of the National Academy of Sciences of Belarus

Email: stevmv555@gmail.com

Belarus, 5, block 2, Akademika V.Kuprevicha str., Minsk, 220141

Yu. V. Medvedeva

Tomsk State University

Email: stevmv555@gmail.com

Russian Federation, 34a, Lenina prospect, Tomsk, 634050

O. K. Murgan

Tomsk State University

Email: stevmv555@gmail.com

Russian Federation, 34a, Lenina prospect, Tomsk, 634050

A. L. Sauchuk

The Institute of Bioorganic Chemistry of the National Academy of Sciences of Belarus

Email: stevmv555@gmail.com

Belarus, 5, block 2, Akademika V.Kuprevicha str., Minsk, 220141

V. V. Kuznetsov

Tomsk State University; K.A. Timiryazev Institute of Plant Physiology of the Russian Academy of Sciences

Email: stevmv555@gmail.com

Russian Federation, 34a, Lenina prospect, Tomsk, 634050; 35, Botanicheskaya street, Moscow, 127276

Corresponding Member of the RAS

V. A. Khripach

Tomsk State University; The Institute of Bioorganic Chemistry of the National Academy of Sciences of Belarus

Email: stevmv555@gmail.com

Russian Federation, 34a, Lenina prospect, Tomsk, 634050; 5, block 2, Akademika V.Kuprevicha str., Minsk, 220141

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