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Ligand diversity contributes to the full activation of the jasmonate pathway in Marchantia polymorpha.

Kneeshaw, S., et al. · 2022 · PNAS   research

doi:10.1073/pnas.2202930119   PMID:36037336   PMC9457472

Linked genes (12)  5 core 7 peripheral

Gene ID Name Evidence / Role Function (this paper)
Mp2g26590 MpCOI1 experimental subject F-box protein component of the jasmonate coreceptor in M. polymorpha. Pull-down/binding assays showed that diverse ligands, including Δ4-dn-OPDA, facilitate the MpCOI1–MpJAZ interaction. Mpcoi1 mutants were tested in growth-inhibition assays to probe ligand activity.
Mp3g13250 MpDES5 experimental subject Desaturase converting eicosatetraenoic acid (ETA) into EPA. Mpdes5 mutants were analyzed for EPA/ETA production and downstream jasmonate biosynthesis.
Mp6g17330 MpDES6 experimental subject Δ6-desaturase in the EPA biosynthetic route. CRISPR Mpdes6 mutants (including double mutants) were analyzed for C20-OPDA and Δ4-dn-OPDA accumulation after wounding.
Mp3g10660 MpFAD5 experimental subject Fatty acid desaturase in jasmonate biosynthesis. CRISPR-generated Mpfad5 mutants were analyzed for PUFA and jasmonate content and challenged in herbivory and fungal assays to assess pathway contribution.
Mp6g06230 MpJAZ experimental subject Jasmonate-ZIM-domain protein forming the MpCOI1–MpJAZ coreceptor complex. Recombinant MpJAZ was used in pull-down assays to assess ligand-dependent coreceptor interaction.
Mp7g06530 missing experimental tool Aromatic L-amino acid/L-tryptophan decarboxylase gene tested by qPCR as a wound-responsive marker.
Mp3g25140 MpAPT experimental tool Reference gene (Mp3g25140) used for qPCR normalization of gene expression.
Mp2g10330 MpCYP94-like experimental tool Cytochrome P450 CYP94-like gene (Mp2g10330) measured by qPCR as a wound-responsive expression marker.
Mp3g23400 MpEF1 experimental tool Reference gene used to normalize DNA levels in qPCR-based fungal quantification.
Mp5g21680 MpLOX4 experimental tool Wound-responsive lipoxygenase gene (Mp5g21680) used as a marker in qPCR expression analyses.
Mp5g21760 MpPATATIN missing experimental tool Patatin-like phospholipase gene measured by qPCR as a wound-responsive marker.
Mp6g02350 MpELO1 citation background Δ6-elongase mentioned only as part of the described ALA-to-EPA biosynthetic pathway.