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0410U005865,
к.б.н.
25-10-2010
o
Protective reactions of wheat sorts of different resistance to Pseudocercosporella herpotrichoides
Belava Viktoriia Nazarivna,
popup.head Taran Nataliya Yuriivna
popup.opponent Лісовий Михайло Павлович
popup.opponent Чугункова Тетяна Володимирівна
Дисертація присвячена дослідженню захисних реакцій рослин озимої пшениці за інфікування збудником прикореневої гнилі Pseudocercosporella herpotrichoides (Fron) Deighton. У роботі представлено нову модельну систему інфікування рослин озимої пшениці збудником церкоспорельозу - інфікування насіння суспензією конідій Р. herpotrichoides на стадії проростання. Виявлено специфіку вмісту кінцевих продуктів пероксидного окиснення ліпідів (ТБК-активних продуктів) в здорових та інфікованих проростках різних за стійкістю сортів. Показано відмінності динаміки лектинової активності проростків різних за стійкістю сортів на ранніх етапах патогенезу за наявності та відсутності передпосівної обробки пероксидом водню. Досліджено й описано особливості передінфекційної та післяінфекційної динаміки експресії генів (за кількістю мРНК) захисних білків - лектинів та дефенсинів для різних за стійкістю сортів пшениці. З'ясовано, що запасний пул мРНК лектину в тканинах проростків відносно резистентного сорту набагато масивніший, що, ймовірно, є однією з основ стійкості сорту до даного патогену. Вважаємо, що здатність рослинного організму за патогенезу нормалізовувати рівень мРНК захисних сполук сприяє резистентності сорту.
2010-10-25
2020-04-04
Updated: 2025-12-07
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