RPL12A/B/C are SAUR62/75-interacting proteins. A, BiFC assays of SAUR62-YN (containing the N terminus of YFP) and/or SAUR75-YN with RPP2B-YC (containing the C terminus of YFP), RPL12A-YC, RPL12B-YC, RPL12C-YC, ACT7-YC, or LePRK1-YC in particle bombardment-transformed tobacco pollen tubes confirmed the interaction between SAUR62/75 and individual RPL12s. LePRK1-YC was used as a negative control. Bars = 10 μm. B, Y2H assays of SAUR62 and SAUR75 with RPP2B, RPL12A, RPL12B, RPL12C, ACT7, or AD on SD/-LW (synthetic dropout-Leu/-Trp) and SD/-LWAH (synthetic dropout-Leu/-Trp/-Ade/-His) medium were used to verify the interactions between SAUR62/75 and their interaction partners. Empty vector (AD, pGADT7) was used as a negative control.