A transgenic food crop, which may help in solving the problem of...

Vitamin-A deficiency causes nightblindness among children. Vitamin-A deficiency often occurs, where rice is the staple food since, rice grain does not contain $\beta$-carotene. Three transgenes providing phytoene synthase, phytoene desaturase, $\beta$ carotene desaturase and lycopene cyclase activities were transferred into rice by Agrobacterium mediated transformation. The resulting transgenic rice popularly called Golden rice contains good quantities of $\beta$-carotene. Flavr savr is genetically modified tomato, which remains fresh and retains their flavour much longer than normal tomato due to blocking of synthesis of fruit softening enzyme polygalacturonase.