The application provides application of a TGBp1
gene, or a
protein coded by the TGBp1
gene, or a recombinant carrier or host
bacteria containing a
coding region of the TGBp1
gene in down-regulating expression level of MeGRXC3. The application research finds that there is interaction between TGBp1 and MeGRXC3, the growth ability of
yeast in SD / -Leu / -Trp / -His / -Ade auxotrophic medium can be improved, the expression of MeGRXC3 can be down-regulated, the
active oxygen content of tobacco leaves co-expressing TGBp1 and MeGRXC3 is improved, and the growth ability of
yeast in SD / -Leu / -Trp / -His / -Ade auxotrophic medium is improved. The
research result lays a theoretical foundation for cassava common
mosaic virus disease-resistant breeding.