increased phosphatidylinositol-4,5-bisphosphate level in plasma membrane increased phosphatidylinositol-4,5-bisphosphate level in the cell division site plasma membrane 2024-09-30T11:44:01Z increased cell sivision site plasma membrane PI(4,5)P2 level vw A cell phenotype observed in the vegetative growth phase of the life cycle in which the amount of phosphatidylinositol-4,5-bisphosphate measured in the cell division site plasma membrane is higher than normal.