Fig. 12From: Cloning and expression of BpMYC4 and BpbHLH9 genes and the role of BpbHLH9 in triterpenoid synthesis in birchSimplified working model of the role of BpbHLH9 in hormone-induced triterpenoid synthesis in Betula platyphylla. BpbHLH9 is induced by ABA/MeJA but repressed by ABA/ethylene. BpbHLH9 interacts with MYB to induce BpSS expression by binding the G-box cis-elements of the BpSS promoter, which subsequently regulates triterpenoid synthesisBack to article page