(i) Pyrroline-5 Carboxylase Synthase gene isolated from soybean and inserted into tobacco plant was found to grow ten times more in saline soil.
(ii) Cold tolerant AF gene isolated from arctic fish (Flounder) and introduced into crop plants to create cold tolerant crops. For example, tomatoes, round potatoes etc.
(iii) Drought resistant Bhutra has been developed by introducing csPB gene from Bacillus subtilis bacterium into Bhutra plant.
(iv) Introgression of the At NHXI gene from Arabidopsis into peanut plants has resulted in salted peanuts.
(v) Genes resistant to stresses such as heat, cold, heavy metals, phytohormones etc. have been identified in natural environment. All these genes are trying to enter the plant body.