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^ШХР: 10-9685 2011 N 4
^АВТ: Удинцев С.Н.; Бурмистрова Т.Н. ; Заболотская А.В. ; Жилякова Т.П.
^ЗГЛ: Механизмы индукции резистентности растений к фитопатогенам гуминовыми веществами = The mechanisms of induction of plants resistance to phytopatogens with humic substances
^ВЫХ: Вестн. Том. гос. ун-та. Биология. Томск, 2011; N 4(16). - С. 100-107
^ДАТ: 2011
^ПРМ: Рез. англ..-Библиогр.:с.104-106
+Реферат:

^РЕФ: В обзоре представлены основные результаты экспериментальных исследований и практического применения гуминовых веществ (ГВ) в качестве индукторов резистентности растений к фитопатогенам. В качестве ведущего механизма действия ГВ обсуждается сигнальный путь, в котором принимают участие ауксин-индолил-3-уксусная кислота и фермент пероксидаза. Данные, представленные в настоящем обзоре, позволяют сформулировать научно обоснованный подход к разработке высокоэффективных препаратов - индукторов устойчивости растений на основе ГВ, источником которых является, в частности, торф, ресурсы которого в Томской области одни из самых крупных в мире.

aref2 2 The data of modern domestic and foreign scientific literature devoted to one of the most topical problems of agricultural science - the development of effective preparations of the new generation to struggle with phytopathogens - the inducers of plants resistance, is presented in a review. The effect of elicitors - the inductors of resistance which activates the net of signal ways, including auxin-indolil-3-acetic acid (IAA) and inducing the synthesis of pathogenesis-related proteins (PR-protein) is discussed as a basic mechanism of the following phenomenon. One of these mechanisms is examined - the increasing of reactive oxygen species formation, H2O2, in a first place with the participation of one of PR-proteins families - the cells peroxydases enzymes. The level of ones is known to be higher in cells of plants species resistant to pathogens, then in sensitive ones. The activity of plant peroxidases was shown to be increased at the abundance of IAA and this mechanism - AA-peroxydase signal way ‒ is discussed in a review. As one of the compounds which activate the following signal way, the humic (HS) substances are presented. The latter are known to possess the auxin-like effect connected with the presence of IAA in the structure and the possibility to induce the peroxydases formation in plants cells. The results of experimental and practical investigations of HS application confirming the ability of ones to induce the plants resistance to phytopathogens of Fusarium, Alternaria, Choanephora, Aspergillus, Rhizoctonia etc species are presented. The preparation on the basis of peat HA was shown to decrease the infection level of wheat root rots in the conditions of West Siberia. The mechanisms of these effects discussed from the point of view of HS participation in a IAA - peroxydase signal way. The dependence of this effect from IAA content in different fractions of HS, the molecular mass of ones, the presence of definite chemical groups and physico-chemical characteristics of HS source (soil, peat) discussed as well. The data, presented in a following review, allows to formulate the scientifically based approach to the development of highly effective preparations - inducers of plants resistance on the basis of HS of peat origin, in particular. The resource of this mineral raw material in Tomsk region are known to be one of the greatest in the world.

^TRN: 1257297
^ВИД: Статья из журнала
^ЯЗК: Русский
+Индексирование:

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