The wound hormone jasmonate.
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.
Koo
Abraham J K
AJ
Department of Energy Plant Research Laboratory, Michigan State University, East Lansing, MI 48824, United States.
Howe
Gregg A
GA
D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism; D003517:Cyclopentanes / Q000737:chemistry / Q000378:metabolism*; D018506:Gene Expression Regulation, Plant / Q000235:genetics / Q000502:physiology; D007532:Isoleucine / Q000031:analogs & derivatives / Q000737:chemistry / Q000378:metabolism / Q000502:physiology; D008954:Models, Biological; D015394:Molecular Structure; D054883:Oxylipins / Q000737:chemistry / Q000378:metabolism*; D015398:Signal Transduction / Q000235:genetics / Q000502:physiology
D029681:Arabidopsis Proteins; D003517:Cyclopentanes; D054883:Oxylipins; C532883:jasmonoyl-isoleucine; D007532:Isoleucine; C011006:jasmonic acid
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