Akademika Zabolotnogo Str., Kyiv, Ukraine, 03680 ysheludko@ukr.net Our aim was to investigate the influence of some exogenous agents on the recombinant protein accumulation in plants via Agrobacterium-mediated transient expression. Methods. Agrobacterium-mediated transient expression method, spectrophotometric methods for protein analysis, statistical calculations. Results. It was shown that the tested compounds in different concentrations (namely, auxins, cytokinin, methyl jasmonate and

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... sors of jasmonate biosynthesis (phenidon and diethyldithiocarbamic acid)) added to the infiltration buffer did not influence either GFP transient expression nor total protein accumulation in plant tissue. Conclusions. The results suggest that the tested factors are not substantial for Agrobacterium-mediated transient expression.