TRANVIA (TVA) facilitates cellulose synthase trafficking and delivery to the plasma membrane
Tamara Vellosillo, José R. Dinneny, Chris Somerville, David W. Ehrhardt
Abstract
mutant exhibits enhanced sensitivity to cellulose synthesis inhibitors; reduced cellulose content; and defective dynamics, density, and secretion of CSCs to the plasma membrane as compared to wild type. TVA is a plant-specific protein of unknown function that is detected in at least two different intracellular compartments: organelles labeled by markers for the TGN and smaller compartments that deliver CSCs to the plasma membrane. Together, our data suggest that TVA promotes trafficking of CSCs to the plasma membrane by facilitating exit from the TGN and/or interaction of CSC secretory vesicles with the plasma membrane.
Topics & Concepts
Golgi apparatusSecretionCell biologyCelluloseVesicleMembraneOrganelleSecretory pathwayIntracellularChemistryMutantCompartment (ship)BiochemistryBiologyCellGeneOceanographyGeologyPolysaccharides and Plant Cell WallsAdvanced Cellulose Research StudiesPlant nutrient uptake and metabolism