Fig. 7
From: LcMPK3 and LcMPK6 positively regulate fruitlet abscission in litchi
Proposed model of LcMPK3/6-mediated signaling pathway in litchi fruit abscission. Upon abscission induction, core downstream components in the MAPK cascade, LcMPK3 and LcMPK6, are activated. LcMPK3/6 facilitate fruit abscission, likely through interacting and phosphorylating various proteins such as LcBZR1/2, LcPIP2;5, LcTIP1;1, LcNAC72, among others, to enhance ethylene production, ROS production, and cell turgor pressure, etc. These actions, in turn, promote cell separation in the abscission zone