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Anthocyanidin reductase (ANR) is an NADPH-/NADH-dependent enzyme that transfers two hydrides to anthocyanidins to produce three types of isomeric flavan-3-ols. This reductase forms the ANR pathway toward the biosynthesis of proanthocyanidins (PAs, which are also called condensed tannins). Here, we report cloning and functional characterization of an ANR (called VbANR) homolog from the leaves of Vitis bellula...
Physiological studies on aging in perennials are mainly focused either on the primary metabolism or the hormonal regulation of the process. However, to our knowledge, the involvement of the secondary metabolism in this process has not yet been explored. Cistus clusii, a Mediterranean sclerophyllous evergreen bush, shows considerable amounts of flavan-3-ols in leaves. In the present study, we aimed...
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