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

Jimenez-Aleman, G. H., Almeida-Trapp, M., Fernández-Barbero, G., Gimenez-Ibanez, S., Reichelt, M., Vadassery, J., et al. (2019). Omega hydroxylated JA-Ile is an endogenous bioactive jasmonate that signals through the canonical jasmonate signaling pathway. Biochimica et Biophysica Acta, 1864(12): 158520. doi:10.1016/j.bbalip.2019.158520.

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Jimenez-Aleman, Guillermo Hugo1, Author              
Almeida-Trapp, Marilia2, Author              
Fernández-Barbero, Gemma, Author
Gimenez-Ibanez, Selena, Author
Reichelt, Michael3, Author              
Vadassery, Jyothilakshmi1, 4, Author              
Mithöfer, Axel2, Author              
Caballero, Julio, Author
Boland, Wilhelm1, Author              
Solano, Roberto, Author
Affiliations:
1Department of Bioorganic Chemistry, Prof. Dr. W. Boland, MPI for Chemical Ecology, Max Planck Society, ou_24028              
2Research Group Plant Defense Physiology, Dr. Axel Mithöfer, MPI for Chemical Ecology, Max Planck Society, ou_3022756              
3Department of Biochemistry, Prof. J. Gershenzon, MPI for Chemical Ecology, Max Planck Society, ou_421893              
4IMPRS on Ecological Interactions, MPI for Chemical Ecology, Max Planck Society, Jena, DE, ou_421900              

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 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.

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 Dates: 2019-08-262019-08-29
 Publication Status: Published online
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 Identifiers: Other: BOL719
DOI: 10.1016/j.bbalip.2019.158520
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Title: Biochimica et Biophysica Acta
Source Genre: Journal
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Publ. Info: Amsterdam [etc.] : Elsevier
Pages: - Volume / Issue: 1864 (12) Sequence Number: 158520 Start / End Page: - Identifier: ISSN: 0006-3002
CoNE: https://pure.mpg.de/cone/journals/resource/954925384085