Jasmonate

Jasmonates are plant signaling compounds derived from jasmonic acid that regulate growth, development, and defenses against herbivores and pathogens.

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Jasmonoyl-isoleucine: A bioactive jasmonate conjugate that promotes jasmonate signaling by enabling the COI1 receptor complex to recognize JAZ repressors. This conjugate is the principal signal that activates canonical jasmonate responses.
Induced systemic resistance: A plant-wide state of enhanced defense triggered by beneficial microbes, often involving jasmonate and ethylene signaling. Jasmonate is a major signaling route through which beneficial microbes prime defenses.
Jasmonic acid: A cyclopentanone oxylipin that serves as a precursor to bioactive jasmonates and participates in plant signaling. Jasmonates are derived from this central compound in the pathway.
Growth–defense tradeoff: The allocation tradeoff in which resources used for defense can reduce investment in plant growth or reproduction. Jasmonate activation can redirect resources from growth toward defense.
Jasmonate–salicylic acid crosstalk: Interactions between jasmonate and salicylic acid signaling that can reinforce or suppress plant defense responses. The balance between these pathways helps determine which defenses jasmonate signaling activates.
COI1: An F-box protein that acts as a jasmonate co-receptor with JAZ proteins and directs their degradation. COI1 detects bioactive jasmonate and initiates the pathway's release of gene-expression brakes.
Plant defense against herbivory: The structural, chemical, and behavioral strategies plants use to reduce damage by herbivores. Jasmonate coordinates many of the chemical defenses deployed after herbivore attack.
Oxylipin: A family of oxygenated fatty-acid derivatives found in plants, animals, and other organisms. Jasmonates belong to this broad family of lipid-derived signaling molecules.
Herbivore-induced plant volatiles: Volatile compounds released by plants after herbivore damage that can attract predators or parasitoids of the herbivores. Jasmonate signaling contributes to the production of these indirect defenses.
Jasmonate signaling specificity: The mechanisms that make jasmonate responses differ among tissues, developmental stages, and environmental conditions. A shared hormone pathway produces distinct outcomes that remain incompletely explained.