ERN1 and infection: Almost all the determinants characterized in the model legumes M. truncatula and L. japonicus are also present in their genome, notably the Nod-factor perception genes NFP/NFR5 and LYK3/NFR1, symbiotic signaling genes SYMRK, POLLUX, CCAMK, CYCLOPS, NIN, NSP2, and CRE1/LHK1, and infection-related genes RINRK1, VPY, NPL, ERN1, and CBS1 (Roy et al., 2020; Krönuer and Radutoiu, 2021; Figure 2).