ArticleMetabolites2026
Metabolomic Characterization Reveals Organ-Specific Accumulation of Secondary Metabolites in Petiole Glands of
Article in Metabolites, 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
BACKGROUND/
objectives
methodsA widely targeted metabolomics approach based on ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS) was applied to analyze petiole glands, leaves, and shoot tips collected from the same
resultsPetiole glands contained 700 detected metabolites, representing the highest metabolic diversity among the three examined organs, and 39 metabolites were exclusively detected in petiole glands. Principal component analysis clearly separated petiole glands from leaves and shoot tips, demonstrating their distinct metabolic profile. Compared with other organs, petiole glands showed preferential accumulation of several secondary metabolite classes, including flavonoids, tannins, alkaloids, and phenolic acids. The gland-exclusive metabolites included flavonoids such as kaempferide, kaempferitrin, and tectoridin, as well as diverse proanthocyanidins and phenolic acid derivatives.
conclusionsThis study provides the first systematic metabolomic characterization of
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