Abstract
Jasmonates are fatty acid derivatives that control several plant processes including growth, development and defense. Despite the chemical diversity of jasmonates, only jasmonoyl-L-isoleucine (JA-Ile) has been clearly characterized as the endogenous ligand of the jasmonate co-receptors (COI1-JAZs) in higher plants. Currently, it is accepted that ω-hydroxylation of JA-Ile leads to inactivation of the molecule. This study shows that ω-hydroxylated JA-Ile (12-OH-JA-Ile) retains bioactivity and signals through the canonical JA-pathway. The results suggest that 12-OH-JA-Ile differentially activates a subset of JA-Ile co-receptors that may control and/or modulate particular jasmonate dependent responses. It is proposed that after a strong immune response mediated by JA-Ile, the ω-hydroxylated form modulates JA-Ile activated processes thereby improving plant resilience.
| Original language | English (US) |
|---|---|
| Article number | 158520 |
| Journal | Biochimica et Biophysica Acta - Molecular and Cell Biology of Lipids |
| Volume | 1864 |
| Issue number | 12 |
| DOIs | |
| State | Published - Dec 2019 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Molecular Biology
- Cell Biology
Keywords
- Fatty acids
- Jasmonate
- Oxylipin
- Phytohormone
- ω-Hydroxylation
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