Candidate genes involved in the biosynthesis of triterpenoid saponins in Platycodon grandiflorum identified by transcriptome analysis
Background: Platycodon grandiflorum is the only species in the genus Walking Sticks Platycodon of the family Campanulaceae, which has been traditionally used as a medicinal plant for its lung-heat-clearing, antitussive, and expectorant properties in China, Japanese and Korean.Oleanane-type triterpenoid saponins were the main chemical components of