Heterotrimeric G protein β subunit GPB1 and MAP kinase MPK1 regulate hyphal growth and female fertility in Fusarium sacchari

► Heterotrimeric G protein beta subunit, GPB1 was characterized from Fusarium sacchari. ► MAP kinase, MPK1, was characterized from F. sacchari. ► GPB1 and MPK1 were involved in hyphal formation and fertility. ► Decreased level of intracellular cAMP was observed in gpb1 disruptant.