Meaning of agricultural biotechnology its advantages and disadvantages.
Agricultural biotechnology is the manipulation of Crops and Animals or their parts for the production of value added goods and services for man use.
Insect resistant crops: These crops have been engineered to express a self-defense for insect pest so as to enhance productivity and reduce crop losses for e.g. Bt cotton (Bacillus thuringienesis). This cotton has DNA (genetic material) from the soil microbe Bacillus thuringienesis incorporated into its genome (Entire genetic make up) which enables it to express resistance for insect pest.
Herbicide tolerant crops: These are crops that have been engineered so that their growth and development is not significantly affected by herbicides used on the weeds growing around them. This will enhance crop yield, reduce wastage, reduce cost and as well help in maintaining biodiversity. Crops such as maize, wheat, sugar cane, rice, onions etc. have been genetically modified to express this trait.
Protein enhanced sweet potatoes: Sweet potatoes is known for its carbohydrate rich content, recently scientist have developed a protein rich sweet potatoes by isolating a gene AmA1 rich in lysine from the amaranth plant and incorporating it into the genome of sweet potatoes and it is well expressed. This protein AmA1 is not known to be an allergen.
Cheese Making: Because of the insufficiency in rennet production from animals, and other natural sources, rennet which is an enzyme which produces chymosin which curdles milk in cheese production is now been mass produced by isolating the gene for rennet production from animal stomach and insert them into certain bacteria, fungi to make them produce chymosin during fermentation. The genetically modified microorganism is killed after fermentation and chymosin is removed from the fermentation broth so that the fermentation produced chymosin does not contain any GM component or ingredient.
Due to empirical facts that biotechnology products are safe to use, and the promise biotechnology holds to bring more innovation to agriculture; producing more food to meet the growing demand while maintaining the biodiversity.