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Glycolysis is required for the association of the REN1 RopGAP with exocytic vesicles. REN1 RopGAP negatively regulates the Rho GTPase signaling, which coordinates pollen tube growth by coordinating actin dynamics and exocytosis. The mechanisms linking glycolysis with cell polarity remains elusive, which are possibly energization of unclear vesicle trafficking, or HXK signaling.
