Health & Environmental Research Online (HERO)


Print Feedback Export to File
7230074 
Journal Article 
Jasmonates 
Zhai, Q; Yan, C; Li, Lin; Xie, D; Li, C; , 
2017 
ACADEMIC PRESS LTD-ELSEVIER SCIENCE LTD 
LONDON 
HORMONE METABOLISM AND SIGNALING IN PLANTS 
243-272 
As a major immunity hormone, the jasmonate family of oxylipins promote plant defense to mechanical wounding, chewing insects, and necrotrophic pathogens. In addition, jasmonates generally repress vegetative growth while promoting reproductive development. Molecular genetic studies, mainly conducted in the model systems of Arabidopsis (Arabidopsis thaliana) and tomato (Solanum lycopersicum), have significantly improved our understanding of the molecular mechanisms underlying jasmonate biosynthesis and signaling. Genes encoding nearly all enzymes involved in the octadecanoid pathway for jasmonate biosynthesis have been identified. Recent discoveries have illustrated a core jasmonate signaling module consisting of the F-box protein CORONATINE INSENSITIVE 1 (COI1) that forms a Skp-Cullin-F-box (SCF) E3 ubiquitin ligase complex, a group of jasmonate-ZIM domain (JAZ) proteins that function as transcriptional repressors, and various transcription factors that differentially regulate diverse aspects of JA responses. The COI1 protein serves as the jasmonate receptor to perceive the bioactive hormone jasmonoyl-isoleucine (JA-Ile) and recruit JAZ repressors for degradation, which leads to activation of JAZ-repressed transcription factors that regulate their -corresponding jasmonate-responsive genes. Accumulating evidence shows that jasmonates also interact with other hormonal signals to regulate diverse plant defense responses and various developmental processes. 
978-0-12-811562-6