Moreover, the fibrillar structures of YFP-CP were associated with PD-localized structures of mRFP-CI in the presence of P3N-PIPO during virus infection (Figure 5, panel IV), consistent with published results that the CP of Pea seed-borne mosaic virus (PSbMV) is present in the CI conical structures adjacent to PD [27], [28] and that TEV CP is required for cell-to-cell movement [25], [26]. Here, CP is linked to viral infectious disease.