Growth of pollen tubes of Papaver rhoeas is regulated by a slow-moving calcium wave propagated by inositol 1,4,5-trisphosphate. - Franklin-Tong, ,V..E.,.; Drøbak, ,B..K.,.; Allan, ,A..C.,.; Watkins, ,P..A. C.,.; and Trewavas, ,A..J.. (Plant Cell, 1996)