| 摘要 |
The invention provides a DNA molecule, a DNA construct, a transgenic plant and a transgenic plant part comprising a synthetic DNA sequence. The synthetic DNA sequence encodes an enzyme that degrades 2,4-dichlorophenoxyacetic acid (2,4-D) to dichlorophenol. The synthetic DNA sequence comprises a natural microbial sequence that encodes the enzyme in which at least a plurality of the codons of the natural microbial sequence have been replaced by codons more preferred by a plant. The invention also provides a method of controlling weeds in a field containing transgenic plants according to the invention by applying an auxin herbicide, such as 2,4-D, to the field. The invention further provides methods of selecting plants and plant cells that have been transformed with a DNA construct according to the invention using an auxin herbicide.
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