Precise guided pollen tube growth by the female gametophyte is a prerequisite for successful sexual reproduction in flowering plants. Cysteine-rich proteins (CRPs) secreted from the embryo sac are known pollen tube attractants perceived by pollen tube receptor-like kinases. How pre-mRNA splicing facilitates this cell-to-cell communication is not understood. Here, we report a novel function of Pre-mRNA PROCESSING factor 8 paralogs, PRP8A and PRP8B, as regulators of pollen tube attraction. Double mutant
