The small GTP-binding protein GhARAC3 is involved in cotton resistance to Verticillium dahliae by regulating lignin metabolism.
Plant Rho/ROP GTPases act as essential molecular switches in disease resistance. However, how their protein stability is regulated and integrated with lignin metabolism remains poorly understood. Here, we demonstrate that the cotton small GTPase GhARAC3 serves as a positive regulator of resistance against the vascular...