Visn. Hark. nac. agrar. univ., Ser. Biol., 2017, Issue 2 (41), с. 68-77


І. V. Zhuk1, G. M. Lisova2, A. P. Dmitriev1

1Institute of Cell Biology and Genetic Engineering
of National Academy of Science of Ukraine
(Kyiv, Ukraine)
2Institute of Plant Protection National Academy
of Agrarian Science of Ukraine
(Kyiv, Ukraine)

The effects of the elicitor (oxalic acid) in combination with the signaling molecule NO donor (sodium nitroprusside) on wheat (Triticum aestivum) resistance to septoria leaf blotch (Septoria tritici) and leaf rust (Puccinia recondita) infections were studied. It is shown in field trials that pre-treatment of two soft wheat varieties (Poliska 90 and Stolitsna) with the combination of elicitor + signaling molecule induced their disease resistance. Cultivar-specific character of hydrogen peroxide content changes after artificial inoculation with the causative agents’ spores was revealed. Some specific features of immunomodulators effects on wheat morphogenesis were studied at different stages of disease development. We noted the enhanced stems and leaves growth, increasing the grain number in the ear and total productivity. It is concluded that the usage of immunomodulator compositions to induce systemic acquired resistance is an effective and promising method for wheat plants protection, including at the simultaneous inoculation with a few pathogenic fungi of different nutrition method.

Key words: Triticum aestivum, Septoria tritici, Puccinia reconditа, plant defense responses, oxalic acid, nitric oxide



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