Exogenous superoxide dismutase may lose its antidotal ability on rice leaves

Leaf diffusates of the resistant rice (Oryza sativa L.) cultivars suppressed spore germination of blast fungus (Magnaporthe grisea (Hebert) Barr). Bovine Cu-Zn superoxide dismutase (SOD) added to the diffusate abolished its toxicity. However, the enzyme added to the inoculum did not affect the toxicity of the diffusate. Even the second SOD portion added to the diffusate was ineffective. As well, the enzyme exposed to leaves could not protect the fungus from artificially-generated superoxide. Presumably, SOD contacting with leaves induced an efflux of compound(s) inhibiting both portions of the enzyme. Evidence was obtained suggesting that neither enzymatic protein nor zinc of coenzyme but copper might be the inducer. A comparison of rice leaves and callus culture together with the effects of exogenous salicylic acid suggests that this compound may be the inhibitor liberating from leaves. It is not excluded that rice plants are capable of inactivation of antioxidant enzymes of pathogens and that this ability favors disease resistance. © 2013 Pleiades Publishing, Ltd.

Авторы
Aver'yanov A.A.1 , Zakharenkova T.S.1 , Lapikova V.P.1 , Pasechnik T.D.1 , Gaivoronskaya L.M. 2 , Baker C.J.3
Редакторы
-
Издательство
-
Номер выпуска
2
Язык
Английский
Страницы
270-278
Статус
Опубликовано
Подразделение
-
Номер
-
Том
60
Год
2013
Организации
  • 1 Research Institute of Phytopathology, Russian Academy of Agricultural Sciences, Bolshie Vyazemy, Moscow region, 143050, Russian Federation
  • 2 Faculty of Agriculture, Russian People's Friendship University, Moscow, 117198, Russian Federation
  • 3 Molecular Plant Pathology Laboratory, Agricultural Research Service USDA, Beltsville, MD, 20705, United States
Ключевые слова
fungitoxicity; leaf diffusates; Magnaporthe grisea; Oryza sativa; rice blast disease; superoxide dismutase
Дата создания
19.10.2018
Дата изменения
19.10.2018
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/2120/