The wound hormone jasmonate

• Published in: Phytochemistry (Oxford) Vol. 70; no. 13; pp. 1571 - 1580
• Main Authors: Koo, Abraham J.K., Howe, Gregg A.
• Format: Journal Article
• Language: English
• Published: England Elsevier Ltd 01.09.2009
• Subjects: Arabidopsis Proteins - genetics; Arabidopsis Proteins - metabolism; biochemical pathways; COI1; Cyclopentanes - chemistry; Cyclopentanes - metabolism; fatty acid hydroperoxides; Gene Expression Regulation, Plant - genetics; Gene Expression Regulation, Plant - physiology; hydroperoxides; Isoleucine - analogs & derivatives; Isoleucine - chemistry; Isoleucine - metabolism; Isoleucine - physiology; Jasmonate; jasmonate receptors; jasmonate-ZIM domain protein; jasmonic acid; JAZ; literature reviews; Models, Biological; Molecular Structure; oxylipins; Oxylipins - chemistry; Oxylipins - metabolism; plant biochemistry; plant damage; Plant defense; plant hormones; signal transduction; Signal Transduction - genetics; Signal Transduction - physiology; Systemic signaling; Wound response; JAZ; Systemic signaling; COI1; Jasmonate; Plant defense; Wound response
• ISSN: 0031-9422; 1873-3700
• DOI: 10.1016/j.phytochem.2009.07.018

Recent advances in understanding the molecular mechanism of jasmonate signaling provide a framework for understanding how plants recognize and respond to tissue injury. Plant tissues are highly vulnerable to injury by herbivores, pathogens, mechanical stress, and other environmental insults. Optimal plant fitness in the face of these threats relies on complex signal transduction networks that link damage-associated signals to appropriate changes in metabolism, growth, and development. Many of these wound-induced adaptive responses are triggered by de novo synthesis of the plant hormone jasmonate (JA). Recent studies provide evidence that JA mediates systemic wound responses through distinct cell autonomous and non-autonomous pathways. In both pathways, bioactive JAs are recognized by an F-box protein-based receptor system that couples hormone binding to ubiquitin-dependent degradation of transcriptional repressor proteins. These results provide a framework for understanding how plants recognize and respond to tissue injury.