Hydrolyzes glycerol-phospholipids at the terminal phosphodiesteric bond to generate phosphatidic acids (PA). Plays an important role in various cellular processes, including phytohormone action, vesicular trafficking, secretion, cytoskeletal arrangement, meiosis, tumor promotion, pathogenesis, membrane deterioration and senescence. Can use phosphatidylserine but prefers ethanolamine-containing lipids as substrates. a 1,2-diacyl-sn-glycero-3-phosphocholine + H2O = a 1,2-diacyl-sn-glycero-3-phosphate + choline + H(+) Ca(2+). Requires micromolar level (PIP2-dependent). Inhibited by neomycin. Found mainly associated with intracellular membranes but also with mitochondrial membranes, nuclei and clathrin-coated vesicles. Not found in chloroplast. Highly expressed in inflorescences and old leaves, moderately in stems, roots, siliques and young leaves and low in flowers. Activated by wounding, heavy metal, methyl salicylate, osmotic and salt stresses. C2 domain is a calcium-binding fold, and the binding promotes the protein association with membranes. In PLD gamma, all the calcium-coordinating acidic amino acids are conserved. Presence of a putative myristoylation site MGXXXS (Gly-14). Belongs to the phospholipase D family. C2-PLD subfamily. It is uncertain whether the sequence from 46 to 76 is encoded by an intron as for PLDGAMMA2. It is uncertain whether Met-1 or Met-11 is the initiator.