CFP and viral infectious disease: We observed colocalization between actin filaments stained by mTalin-CFP and the elongated tubular structure induced by 6K2-YFP (in the absence of viral infection; Fig. 2A, frames I–IV) or 6K2-GFP (in the presence of viral infection; Fig. 2A, frames V–VIII) at the junctions between adjacent chloroplasts in N. benthamiana leaf cells (Fig. 2A).