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- W777207771 abstract "Jasmonates are plant molecules playing essential roles in response to environmental stresses and in plant development. Jasmonoyl-Isoleucine (JA-Ile) is an active hormonal form of jasmonates so it is crucial for the plant to control its levels. Biochemical, genetic and metabolic studies showed that JA-Ile inactivation after wounding is controlled by two pathways, based on oxidations by cytochromes P450 of the CYP94 family and on cleavage by the amido-hydrolases IAR3 and ILL6. These enzymes also define a pathway for tuberonic acid (12OH-JA) production from JA. CYP94-catalyzed oxidations seem to be a general mechanism to control JA-Ile hormone turnover, jasmonate signaling and responses as it also occurs upon infection by the fungus Botrytis cinerea and in floral development. CYP94s oxidize also the Jasmonoyl-Phenylalanine (JA-Phe) conjugate accumulated in wounded leaves. CYP94s mediated JA-Ile and JA-Phe carboxylation includes an aldehyde intermediate, that of JA-Ile being accumulated in vivo.This work highlights the dynamic metabolism of jasmonate derivatives in a complex branched network involving the concerted action of two enzyme families." @default.
- W777207771 created "2016-06-24" @default.
- W777207771 creator A5038922381 @default.
- W777207771 date "2014-09-10" @default.
- W777207771 modified "2023-09-28" @default.
- W777207771 title "Analyse fonctionnelle de cytochromes P450 de la famille CYP94 et des amidohydrolases IAR3 et ILL6 dans le catabolisme hormonal des jasmonates chez Arabidopsis thaliana" @default.
- W777207771 hasPublicationYear "2014" @default.
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