Fuente: WIPO "tomato" The disclosure relates to DNA polymerase delta subunit 1 (POLD1) polypeptides that mediate resistance to geminiviruses in plants. Also disclosed are plants comprising polynucleotides encoding the POLD1 polypeptides along with related methods of using polynucleotides that encode the POLD1 polypeptides to enhance resistance of a plant to infection by a geminivirus.