A use of a tospoviral nucleic acid molecule of the sequence of nt (nucleotide) 3975-4928 in accordance with GenBank Accession No. AF133128 or a full complement thereof comprising the steps of: (a) obtaining at least one fragment made from the tospoviral nucleic acid molecule; (b) obtaining a transgene from the at least one fragment; (c) introducing the transgene into a plant to generate a transgenic plant; (d) culturing the transgenic plant; (e) selecting a transgenic plant with broad-spectrum resistance; and (f) obtaining the transgenic plant with broad-spectrum resistance.