Deletion of the single UreG urease activation gene in soybean NIL lines: characterization and pleiotropic effects

The soybean eu3-a mutant (formerly, eu3-e1) lacks all ureolytic activity. Eu3 encodes urease accessory (Ni insertion) protein, UreG. Eu3 (Glycine max v1.1 Glyma08g08970.1) is the only UreG-encoding gene in the soybean genome. Here we show that the eu3-a lesion is a 2.4 kb deletion, beginning 50 bp upstream of the transcription start, and covering 94 % of the deduced amino acid sequence of UreG, explaining the urease activity-null phenotype of...