Regulates spindle pole duplication in meiosis I, but not in mitosis. Required for meiosis I, meiosis II chromosome segregation and spore formation. Binds phosphatidylinositol (4)P mono- and polyphosphates. Interacts with SPO23. Induced early in sporulation. Not detected during vegetative growth. Glycosylated. Belongs to the lysophospholipase family.