Moreover, Suzaki et al. [26] described detailed patterns of auxin accumulation during early nodule development in stable transformants of L. japonicus bearing green fluorescent protein (GFP) under the control of a highly active synthetic auxin-responsive promoter DR5. In that study, auxin accumulated in pre-primordial cortical cells adjoining curled root hair with infection thread and in the divided cortical cells at the site of infection [26]. Here, TNFRSF10B is linked to infection.