The regulating effect of RGS and RGS‐like proteins on the differentiation of infection structures and pathogenicity has been elucidated in various fungi such as M. oryzae (Zhang et al. 2011; Liu et al. 2007), C. gloeosporioides (Liu et al. 2018), Fusarium verticillioides (Mukherjee et al. 2011) and Gibberella zeae (Park et al. 2012). Here, PITX2 is linked to infection.