obsolete contractile vacuole tethering involved in discharge https://github.com/geneontology/go-ontology/issues/31870 true GO:0140025 OBSOLETE. The initial, indirect interaction between a contractile vacuole membrane and a site of discharge in the plasma membrane. This interaction is mediated by tethering factors (or complexes), which interact with both membranes. Interaction can occur via direct binding to membrane phospholipids or membrane proteins, or via binding to vesicle coat proteins. This process is distinct from and prior to docking and fusion. Obsoleted because this term describes a molecular function (tethering activity) rather than a biological process. Replaced by the molecular_function term GO:7770067 contractile vacuole-plasma membrane tether activity. biological_process contractile vacuole-plasma membrane tether activity