TY - JOUR AU - Molodchenkova, O. O. AU - Lytvynenko, M. A. AU - Mishchenko, L. T. AU - Ryshchakova, O. V. AU - Bezkrovna, L. Ya. AU - Fanin, Ya. S. AU - Tikhonov, P. S. PY - 2022/08/01 Y2 - 2024/03/28 TI - Oxidizing and antioxidant processes in wheat plants infected by Septoria tritici Rob JF - Plant varieties studying and protection JA - PVSandP VL - 18 IS - 2 SE - PLANT PHYSIOLOGY DO - 10.21498/2518-1017.18.2.2022.265176 UR - https://journal.sops.gov.ua/article/view/265176 SP - 90-97 AB - <p class="a"><strong><span lang="EN-US">Purpose.</span></strong><span lang="EN-US"> Based on the study of oxidative and antioxidant processes in wheat plants (<em>Triticum aestivum</em> L.) in the earing phase at the infection by <em>Septoria tritici</em> Rob., identify the varietal features of changes in the level of hydrogen peroxide, the intensity of lipid peroxidation and the activi­ty of antioxidant enzymes for development of biochemical methods for selection of disease-resistant plants. </span></p><p class="a"><span lang="EN-US"><strong>Methods.</strong> Field, spectrophotometric methods of biochemical characteristic determination, comparison, generalization. Statistical analysis of research results was carried out using the program Libre Office Calc (GNU Lesser General Public Licensev3). </span></p><p class="a"><span lang="EN-US"><strong>Results. </strong>Changes in the content of hydrogen peroxide, malondialdehyde and the activity of catalase, superoxide dismutase, peroxidase in wheat plants infected by <em>S. tritici</em> at the earing phase were determined. The presence of varietal features of changes in the oxidative and antioxidant processes of wheat plant cells upon <em>S. tritici </em>infection were detected. It was shown that plant response to <em>S. tritici</em> damage in more disease-resistant wheat varieties were characterized by increased or unchanged relative to the control the content of malondialdehyde and peroxidase activity. </span></p><p class="a"><span lang="EN-US"><strong>Conclusions. </strong>The obtained results will expand the knowledge about the mechanisms of maintaining ROS homeostasis in wheat plants infected by <em>S. tritici</em> and allow to identify biochemical reactions of wheat plants in response to infection, which can be used in the future for the development of biochemical methods for identification of <em><span style="font-style: normal;">disease</span></em>-<em><span style="font-style: normal;">resistant</span></em> varieties.</span></p> ER -