Involved in abiotic stress signaling. Tethered to plasma membrane (PM) and probably bound to phosphatidylinositol 4,5-bisphosphate. Abiotic stresses (drought, salt, H(2)O(2)) trigger phospholipase C mediated PM dislogement and plastidial and nucleocytosolic relocation of TULP3. Phospholipase C activity mediates the release from the plasma membrane and the relocation to plastids, cytoplasm and nucleus. A number of isoforms are produced. According to EST sequences. Ubiquitous at low levels. Not detected in mature siliques. Down-regulated by H(2)O(2) treatment. Reduced colonization of the roots by the mutualistic fungus Piriformospora indica. Belongs to the TUB family.