Improving the Sulfur-Containing Amino Acids of Soybean to Enhance its Nutritional Value in Animal Feed
Soybean [Glycine max (L.) Merr.] is an economical source of quality protein in the formulation of animal feeds. Domestic swine, poultry, beef, and dairy industries consume a total of 28 million megagrams of soybean meal annually. Though soybean is an excellent source of protein, increasing the quantity of sulfur-containing amino acids could further enhance their nutritive value. This chapter deals with recent developments in enhancing the levels of sulfur-containing amino acids and other essential amino acids in soybean. Introduction of methionine-rich heterologous proteins, elevating the expression of endogenous methionine-rich proteins, and expression of synthetic proteins containing a high percentage of essential amino acids are some of the approaches employed for improving the nutritional quality of the soybean seed. Though the prospects for increasing the sulfur-containing amino acid content of soybean appear promising, a thorough understanding of the intricacies of the sulfur assimilatory pathway and its regulation in soybean will aid in improving the quality of soybean seed protein.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
Copyright © 2008. American Society of Agronomy, Crop Science Society of America, Soil Science Society of America, 5585 Guilford Road, Madison, WI 53711-5801, USA. Sulfur: A Missing Link between Soils, Crops, and Nutrition. Agronomy Monograph 50.