The present invention is directed to a transgenic plant wherein at least a
part of said plant includes a recombinant nucleic acid with a promoter
active in the part operably linked to a nucleic acid encoding a
thioredoxin polypeptide wherein the promoter is a seed or grain
maturation-specific promoter and the thioredoxin polypeptide includes the
amino acid sequence WCGPC. The present invention is further directed to
transgenic plants that overexpress thioredoxin in seed wherein the
overexpression of thioredoxin h effects a significant increase in the
reduction of proteins (--SH as compared to S--S) of the albumin fraction
of the seed.