The role of post-Golgi transport pathways and sorting motifs in the plasmodesmal targeting of the movement protein (MP) of Ourmia melon virus (OuMV)

Natali Ozber; Paolo Margaria; Charles T. Anderson; Massimo Turina; Cristina Rosa

Delivery of cargo proteins between distinct locations in the endomembrane system depends on vesicle trafficking. The plant endomembrane system has unique players controlling trafficking pathways to modulate plant-specific cellular functions and environmental responses (reviewed by Fujimoto and Ueda, 2012) . The trans-Golgi network (TGN) acts as an early endosome (EE) and a major sorting platform where secretory, endocytic, and vacuolar pathways merge (Viotti et al., 2010) . Endocytosed cargoes are received by the TGN and these cargoes are either returned to the plasma membrane or sent to multivesicular bodies (MVBs)/prevacuolar compartments (PVCs), which in plant cells serve as late endosomes (LEs), for vacuolar degradation (reviewed by Fujimoto and Ueda, 2012; Cui et al., 2016) .