| Literature DB >> 26748373 |
Azamat Avalbaev1, Ruslan Yuldashev1, Kristina Fedorova1, Kirill Somov1, Lidiya Vysotskaya2, Chulpan Allagulova1, Farida Shakirova3.
Abstract
The treatment of 4-days-old wheat seedlings with methyl jasmonate (MeJA) in concentration optimal for their growth (0.1 μM) resulted in a rapid transient almost two-fold increase in the level of cytokinins (CKs). MeJA-induced accumulation of CKs was due to inhibition of both cytokinin oxidase (CKX) (cytokinin oxidase/dehydrogenase, EC 1.5.99.12) gene expression and activity of this enzyme. Pretreatment of wheat seedlings with MeJA decreased the growth-retarding effect of sodium chloride salinity and accelerated growth recovery after withdrawal of NaCl from the incubation medium. We speculate that this protective effect of the hormone might be due to MeJA's ability to prevent the salinity-induced decline in CK concentration that was caused by inhibition of gene expression and activity of CKX in wheat seedlings. The data might indicate an important role for endogenous cytokinins in the implementation of growth-promoting and protective effects of exogenous MeJA application on wheat plants.Entities:
Keywords: Cytokinin; Cytokinin oxidase; Methyl jasmonate; Salinity; Triticum aestivum L.
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Year: 2015 PMID： 26748373 DOI： 10.1016/j.jplph.2015.11.013
Source DB: PubMed Journal: J Plant Physiol ISSN： 0176-1617 Impact factor: 3.549