Transgenic Plants in Maize - In maize, a reporter gene for neomycin phosphotransferase (NPT II) associated with 35S promotor region of the cauliflower mosaic virus (CMV) was used for production of transgenic plants.
At the enzyme level, these plants exhibited NPT II activity, and at the DNA level the presence of NPT II gene was demonstrated by Southern blot analysis.In USA, the biotechnology company, Monsanto recently produced insect resistant transgenic maize plants, using the Kurstaki gene derived from B. thuringiensis.

The gene was attached to CaMV 35 S promoter, which enhanced the production of toxin, 1000 times. When each transgenic plant was inoculated with 100 larvae of European corn borer, complete control of insect was observed. Transgenic rice plants, resistant to a certain virus, were also produced using coat protein (CP) gene from the virus.