Although resistance in weeds to the fops and dims readily occurs and is attributed to an altered target site, enhanced metabolism and possibly altered membrane electrochemical properties, no crops with tolerance to this group of herbicides have yet been produced by
O CCOOH CH2
HO CH COOH O
CH2COOH a-Ketoglutarate Succinate Figure 13.8 The detoxification of 2,4-D by 2,4-D dioxygenase.
GM methods. A few have been produced by non-GM means and are discussed in section 13.12.
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