[Effect of methyljasmononate on induction of late-blight resistance of potatoes using arachidonic acid].
Methyl ester of jasmonic acid (Me-JA) influences the induced resistance of potato tubers to late blight caused by Phytophthora infestans. Treatment of potato tuber disk surface with Me-JA solution or exposure to an atmosphere containing Me-JA vapors (10(-6)-10(-5) M) increased the rate of rishitin biosynthesis induced by arachidonic acid or P. infestans. Methyl jasmonate increased the sensitivity of potato tissue to arachidonic acid. As a result, in the presence of Me-JA, the protective properties of arachidonic acid were observed at lower concentrations than in the absence of Me-JA. In addition, Me-JA reduced the adverse effects of lipoxygenase inhibitors (salicylhydroxamic acid and esculetin) on the induced resistance of potato tubers to late blight. Therefore, the synergistic interaction of Me-JA and biogenic elicitors can be regarded as part of a mechanism of potato defense against diseases.
Il'inskaia
L I
LI
Bach Institute of Biochemistry, Russian Academy of Sciences, Moscow, Russia.
Chalenko
G I
GI
Perekhod
E A
EA
Gerasimova
N G
NG
Ozeretskovskaia
O L
OL
D000085:Acetates / Q000494:pharmacology*; D016718:Arachidonic Acid / Q000494:pharmacology*; D003517:Cyclopentanes / Q000494:pharmacology*; D054883:Oxylipins; D010838:Phytophthora / Q000472:pathogenicity*; D010937:Plant Growth Regulators / Q000737:chemistry / Q000494:pharmacology*; D011198:Solanum tuberosum / Q000382:microbiology*
D000085:Acetates; D003517:Cyclopentanes; D054883:Oxylipins; D010937:Plant Growth Regulators; D016718:Arachidonic Acid; C072239:methyl jasmonate