ArticleBMC plant biology2026
A herbivore-inducible CYP82 catalyzes DMNT formation in Idesia polycarpa leaves.
Article in BMC plant biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundHerbivore-induced volatile organic compounds (HIPVs) are important components of plant defense, but the molecular basis of their biosynthesis in woody plants remains poorly understood. Among HIPVs, the homoterpenes (3E)-4,8-dimethyl-1,3,7-nonatriene (DMNT) and (E,E)-4,8,12-trimethyl-1,3,7,11-tridecatetraene (TMTT) are well-characterized herbivore-induced volatiles in herbaceous plants, whereas their biosynthesis in woody species remains largely unexplored. Here, we characterized herbivore-induced volatile emissions from Japanese orange cherry (Idesia polycarpa) leaves following feeding by gypsy moth caterpillars (Lymantria dispar) and investigated the molecular basis of homoterpene HIPV biosynthesis in this perennial woody species.
resultsHerbivory substantially altered the volatile emission profile of I. polycarpa leaves, leading to strong induction of mono- and sesquiterpenes and particularly high emission of the C
conclusionsThese findings establish a likely jasmonate-associated DMNT biosynthetic pathway in I. polycarpa involving the coordinated activity of IpTPS15 and IpCYP82L45. This work advances the molecular understanding of herbivore-induced volatile biosynthesis in non-model woody species and provides new insights into terpene-mediated defense mechanisms in trees.
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