Original line is Toride 1 (Japonica). DQ352040(Piz-t). BGIOSGA022714 (indica). The resistance gene in Toride 1 was allelic to Pi-z and designated as Pi-zt (Yokoo & Kiyosawa 1970). Pi2/9 homolog. GO:0031342: negative regulation of cell killing. NLR receptor. Pi9 in Yu et al. 2018.