Jasmonate Signaling and Plant Adaptation to Abiotic Stressors (Review)

The role of jasmonic acid (JA) and jasmonate signaling in the regulation of plant adaptive responses to the action of stressors is reviewed. The synthesis of JA in plants and the main pathway for the transduction of jasmonate signals are briefly described. The effect of JA on the content of other signaling mediators (calcium ions, reactive oxygen species, nitric oxide, hydrogen sulfide, and carbon monoxide) in cells is surveyed. Data on the involvement of jasmonate signaling components (in particular, COI1 and JIN1/MYC2 proteins) in the physiological effects of signaling mediator gasotransmitters are summarized. Data on changes in the endogenous content of JA under the action of stressors and information on the effect of exogenous JA and its derivatives on the plant resistance are given. The spectrum of jasmonate-dependent defense responses of plants and the mechanisms of their induction are analyzed. Particular attention is given to the role of JA in the activation of the antioxidant system and the regulation of stomata under stress conditions.