H3-4 and Nematoda infectious disease: While the genes of TIR (Csa7G393970) and GH3 (Csa6G125240, Csa3G198490, Csa6G492310, Csa4G007100) were upregulation in Q24 after nematode infection, indicating that the IAA signal was transduced and affected the GC formation in Q24.