The influence of kojic acid and donor NO on Triticum aestivum L. under biotic stress

  • I. V. Zhuk
  • O. P. Dmitriev
  • G. M. Lysova
  • L. O. Kucherova
DOI: https://doi.org/10.7124/FEEO.v25.1166

Abstract

Aim. The usage of biotic elicitors for elicitation of defense responses may induce plant disease resistance and prevent increased environmental pollution by pesticides. Hydrogen peroxide (HP) is a signal molecule for photosynthetic status and for stomatal movements, and systemic acquired resistance to pathogens in plants proposed to be dependent on H2O2. It is shown in our previous research that biotic elicitors influence on H2O2 content in plants. Kojic acid inhibits tyrosinase activity in melanin synthesis. In plant-pathogen interaction melanin plays role for filaments growth of fungal agent. The aim of research was to analyze in field trials effect of kojic acid with additional donor NO treatment of winter wheat under biotic stress. Methods. Content of endogenous H2O2 was measured in kojic acid and NO donor treated wheat plants (cv. Legenda Myronivska) during different ontogenesis phases. The extent of morphometric parameters and yield structure were analyzed. Results. The data obtained suggest that kojic acid and donor NO decreased the HP content in wheat leaves and increased the grain number and yield. Conclusions. Kojic acid with donor NO is effective combination and could be used as biotic elicitor.

Keywords: winter wheat, kojic acid, NO, biotic elicitors, induced resistance, Triticum aestivum L., Septoria tritici Rob.et Desm.

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