Function and Mechanism of Jasmonic Acid in Plant Responses to Abiotic and Biotic Stresses

Abstract

As sessile organisms, plants must tolerate various environmental stresses. Plant hormones play vital roles in plant responses to biotic and abiotic stresses. Among these hormones, jasmonic acid (JA) and its precursors and derivatives (jasmonates, JAs) play important roles in the mediation of plant responses and defenses to biotic and abiotic stresses and have received extensive research attention. Although some reviews of JAs are available, this review focuses on JAs in the regulation of plant stress responses, as well as JA synthesis, metabolism, and signaling pathways. We summarize recent progress in clarifying the functions and mechanisms of JAs in plant responses to abiotic stresses (drought, cold, salt, heat, and heavy metal toxicity) and biotic stresses (pathogen, insect, and herbivore). Meanwhile, the crosstalk of JA with various other plant hormones regulates the balance between plant growth and defense. Therefore, we review the crosstalk of JAs with other phytohormones, including auxin, gibberellic acid, salicylic acid, brassinosteroid, ethylene, and abscisic acid. Finally, we discuss current issues and future opportunities in research into JAs in plant stress responses.

Gibberellic Acid and Jasmonic Acid Improve Salt Tolerance in Summer Squash by Modulating Some Physiological Parameters Symptomatic for Oxidative Stress and Mineral Nutrition

“…It is fundamentally important to recognize how plants perceive stress signals and respond to various environmental stress factors [6]. Plant hormones are active members of the signal cascade involved in the generation of plant responses to stress conditions [7].…”

Identification, Analysis, and Confirmation of Seed Storability-Related Loci in Dongxiang Wild Rice (Oryza rufipogon Griff.)

“…An in-depth analysis of the biological process annotation of GO revealed that LOC_Os09g13610 was involved in the biological process of jasmonic acid (JA) mediated signalling pathway (GO:0009867). Previous studies had revealed that the hormone JA is a critical regulator of tolerance to abiotic stresses [47,48]. In addition, we found that two genes (LOC_Os04g32020 and LOC_Os09g14670) were involved in the tricarboxylic acid cycle process (GO:0006099), one gene (LOC_Os04g32070) was involved in the oxidation-reduction process (GO:0055114), and one gene (LOC_Os09g15670) was involved in the abiotic stress responses (GO:0009409, GO:0009414).…”

Physiological and Genetic Analysis of Leaves from the Resprouters of an Old Ginkgo biloba Tree

“…For example, under osmotic stress, the expression level of several ABA biosynthesis genes (such as ZEP, NCED) is upregulated [40]. In addition, JA and SA are involved in the defense response to biotic stress [41,42]. Under abiotic stress, the expression of LOX in the JA synthesis pathway is induced [42].…”

“…In addition, JA and SA are involved in the defense response to biotic stress [41,42]. Under abiotic stress, the expression of LOX in the JA synthesis pathway is induced [42]. To limit the growth of pathogens and their access to water and nutrients in plants, the activation of SA-dependent signaling pathways could lead to the expression of PRP [43].…”