Glyphosate tolerant plants

A glyphosate tolerant plant having inserted into its genome a recombinant, double-stranded DNA molecule comprising in sequence:

• a) a promoter region which functions in plants to cause the production of an RNA sequence, operatively linked to;
• b) a structural DNA sequence that causes the production of an RNA sequence which encodes a glyphosate oxidoreductase enzyme having the sequence of SEQ ID NO:
• 5, operatively linked to;
• c) a 3' non-translated region which functions in plants to cause the addition of polyadenylated nucleotides to the 3' end of the RNA sequence;
• where the promoter region is heterologous with respect to the structural DNA sequence and causes sufficient expression of said enzyme in plant tissue to enhance the glyphosate tolerance of a plant transformed with said gene.

A method for selectively controlling weeds in a field containing a crop of planted crop seeds or plants which method comprises the steps of:

• a) planting said crop seeds or plants which are glyphosate resistant as a result of a chimeric gene being inserted into said crop seed or plant, said chimeric gene having
• i) a promoter region which functions in plants to cause the production of an RNA sequence, operatively linked to;
• ii) a structural DNA sequence that causes the production of an RNA sequence which encodes a glyphosate oxidoreductase enzyme having the sequence of SEQ ID NO:
• 5, operatively linked to;
• iii) a 3' non-translated region which functions in plants to cause the addition of polyadenylated nucleotides to the 3' end of the RNA sequence;
• where the promoter region is heterologous with respect to the structural DNA sequence and causes sufficient expression of said enzyme in plant tissue to enhance the glyphosate tolerance of a plant transformed with said gene;
• and
• b) applying to said crop and weeds in said field a sufficient amount of glyphosate to control said weeds without significantly affecting said crop.