MECHANISMS OF PROTECTIVE ACTION OF WHEAT GERM AGGLUTININ ON CELL GROWTH IN WHEAT
SEEDLING ROOTS UNDER SALINITY
A. R. Kildibekova, M. V. Bezrukova, A. M. Avalbaev, R. A. Fatkhutdinova, F. M. Shakirova
Institute of Biochemistry and Genetics, Ufa Scientific Center of RAS, Ufa, Russia;
Effects of 20 nM wheat germ agglutinin (WGA) on relative growth rate, mitotic index (MI) and the cell area in the root
extension zone were investigated in seedling of Triticum aestivum L. under the influence of 2 % NaCl. It was elucidated that
pretreatment of wheat seedling with WGA prevented a salinity induced inhibition of root cell growth, and accelerated the restoration
of cell growth after stress removal. The protective WGA effect on root cell growth may be due, presumably, to reorganization of
phytohormone balance caused by WGA treatment, which could lead to accumulation of LAA and decrease in the ABA level.
Key words: mitotic index, phytohormones, salt stress, Triticum aestivum L., wheat germ
agglutinin
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