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Role of jasmonic acid in plants: the molecular point of view

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Recent updates in JA biosynthesis, signaling pathways and the crosstalk between JA and others phytohormones in relation with plant responses to different stresses.

Abstract

In plants, the roles of phytohormone jasmonic acid (JA), amino acid conjugate (e.g., JA-Ile) and their derivative emerged in last decades as crucial signaling compounds implicated in stress defense and development in plants. JA has raised a great interest, and the number of researches on JA has increased rapidly highlighting the importance of this phytohormone in plant life. First, JA was considered as a stress hormone implicated in plant response to biotic stress (pathogens and herbivores) which confers resistance to biotrophic and hemibiotrophic pathogens contrarily to salicylic acid (SA) which is implicated in plant response to necrotrophic pathogens. JA is also implicated in plant responses to abiotic stress (such as soil salinity, wounding and UV). Moreover, some researchers have recently revealed that JA controls several physiological processes like root growth, growth of reproductive organs and, finally, plant senescence. JA is also involved in the biosynthesis of various metabolites (e.g., phytoalexins and terpenoids). In plants, JA signaling pathways are well studied in few plants essentially Arabidopsis thaliana, Nicotiana benthamiana, and Oryza sativa L. confirming the crucial role of this hormone in plants. In this review, we highlight the last foundlings about JA biosynthesis, JA signaling pathways and its implication in plant maturation and response to environmental constraints.

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MG and FB wrote the manuscript. AS and ML read and revised the manuscript. All the authors approved the final version of the manuscript.

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Correspondence to Marco Landi.

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The authors declare no conflicts of interest.

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This review does not contain any studies with human participants or animals performed by any of the authors.

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Communicated by Aryadeep Roychoudhury.

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Ghorbel, M., Brini, F., Sharma, A. et al. Role of jasmonic acid in plants: the molecular point of view. Plant Cell Rep 40, 1471–1494 (2021). https://doi.org/10.1007/s00299-021-02687-4

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  • DOI: https://doi.org/10.1007/s00299-021-02687-4

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