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Western red cedar (Thuja plicata) heartwood contains abundant amounts of structurally complex plicatic acid-derived lignans that help confer protective properties and longevity to this tissue type. Although the lignan biochemical entry point is dirigent protein-mediated, the formation of heartwood and its associated lignans in some species remains poorly understood due to technical difficulties of...
Vascular plants have evolved with remarkable ways to form and protect the vasculature apparatus. In certain woody shrubs, the secondary xylem can have within its center a hollowed pith surrounded by secondary xylem, whereas in most trees there is a solid core of heartwood. Both types of woody systems have, however, the commonality of accumulating so-called 'secondary' metabolites, albeit to different...
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