Jasmonate: the Swiss army knife in the plant’s pocket

Abstract

Jasmonate is a well-known defence hormone for plants, but it is also necessary for growth and development. Indeed, the identification of the COI1 receptor was based on the jasmonate-triggered response of root growth inhibition. In this special issue, a collection of review papers and two research papers discuss the current state of progress in this field, covering areas from seed germination and flowering to the Jasminum sambac genome.

Jasmonic acid signalling is targeted by a smut fungal Tin2-fold effector

“…When plants detect a fungal invasion, they activate the JA pathway, leading to activation of defence gene expression and to the synthesis of defence-related compounds. Perception of JA is mediated by the receptor COI1, an E3 ligase targeting the JAZ repressors for degradation (Li et al, 2021;Zhu, 2023). Interestingly, several bacterial effectors are known that specifically target this receptor complex and thereby interfere with JAdependent defence signalling (Tanaka et al, 2015).…”

Recent Progress Regarding Jasmonates in Tea Plants: Biosynthesis, Signaling, and Function in Stress Responses

“…Among these, fatty-acid-derived jasmonates, including jasmonic acid (JA) and its various derivatives, have attracted much attention for mediating plant responses to both abiotic and biotic stress [3][4][5]. Over the past two decades, there has been significant progress in understanding the molecular mechanisms underlying JA biosynthesis and signaling, especially in model plants such as Arabidopsis (Arabidopsis thaliana) and tomato (Solanum lycopersicum) [1,[6][7][8]. In addition, JA interacts with different hormone signaling pathways to mediate diverse plant defense responses and various developmental processes in plants, such as salicylic acid (SA), gibberellic acid (GA), ethylene (ET), and abscisic acid (ABA) [1,4,6].…”