Resveratrol derivatives in four tissues of six wild Chinese grapevine species

Resveratrol is well known for its strong antioxidant properties. To accelerate research on resveratrol metabolism and to evaluate the genetic potential for breeding, the stilbenoid contents of four tissues (leaf and berry skin, flesh and seed) were examined in 21 accessions of six wild Chinese grapevine species ( Vitis quinquangularis , V. romanetii , V. piasezkii , V. shenxiensis , V. amurensis and V. davidii ). Resveratrol derivatives in V. quinquangularis , V. romanetii , V. piasezkii and V. shenxiensis are reported for the first time. Three kinds of stilbenoid ( trans ‐resveratrol, cis ‐piceid and trans ‐piceid) were detected in the berry skins, flesh, seeds and leaves but cis ‐resveratrol was found to be absent. Stilbenoid content was predominantly affected by genetic background and by tissue type. In most accessions, berry skins produced the highest total stilbenoid, followed by leaves, seeds and flesh. As a proportion, cis ‐piceid was the major stilbenoid component in berry skins, seeds and leaves, whereas trans ‐piceid was the major component in the flesh.