Journal
MUTATION RESEARCH-FUNDAMENTAL AND MOLECULAR MECHANISMS OF MUTAGENESIS
Volume 749, Issue 1-2, Pages 66-72Publisher
ELSEVIER
DOI: 10.1016/j.mrfmmm.2013.05.002
Keywords
Induced mutations; Nutritional quality; Gamma irradiation; Amino acid; Sorghum
Funding
- IAEA
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Physical and biochemical analysis of protein polymorphisms in seed storage proteins of a mutant population of sorghum revealed a mutant with redirected accumulation of kafirin proteins in the germ. The change in storage proteins was accompanied by an unusually high level accumulation of free lysine and other essential amino acids in the endosperm. This mutant further displayed a significant suppression in the synthesis and accumulation of the 27 kDa gamma-, 24 kDa alpha-A1 and the 22 kDa alpha-A2 kafirins in the endosperm. The suppression of kafirins was counteracted by an upsurge in the synthesis and accumulation of albumins, globulins and other proteins. The data collectively suggest that sorghum has huge genetic potential for nutritional biofortification and that induced mutations can be used as an effective tool in achieving premium nutrition in staple cereals. (C) 2013 Published by Elsevier B.V.
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