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Omega hydroxylated JA-Ile is an endogenous bioactive jasmonate that signals through the canonical jasmonate signaling pathway

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Title Omega hydroxylated JA-Ile is an endogenous bioactive jasmonate that signals through the canonical jasmonate signaling pathway
 
Creator Jimenez-Aleman, Guillermo H.
Almeida-Trapp, Marilia
Fernández-Barbero, Gemma
Gimenez-Ibanez, Selena
Reichelt, Michael
Vadassery, Jyothilakshmi
Mithöfer, Axel
Caballero, Julio
Boland, Wilhelm
Solano, Roberto
 
Subject Fatty acids
Oxylipin
Phytohormone
Jasmonate
ω-Hydroxylation
 
Description Accepted date: 26 August 2019
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.
We thank Andrea Lehr for technical assistance and the MPI-CE greenhouse team for cultivation of plants. The authors thank Prof. T. Heitz for providing the b1b3c1 mutant.
 
Date 2019-09-02T10:15:01Z
2019-09-02T10:15:01Z
2019
 
Type Article
 
Identifier Biochimica et Biophysica Acta (BBA) – Molecular and Cell Biology of Lipids, 1864(12): 158520
1388-1981
http://223.31.159.10:8080/jspui/handle/123456789/974
https://www.sciencedirect.com/science/article/pii/S138819811930160X
https://doi.org/10.1016/j.bbalip.2019.158520
 
Language en_US
 
Format application/pdf
 
Publisher Elsevier B.V.