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Rapid and widespread evolution of multiple herbicide resistance in global weed species endowed by increased capacity to metabolize (degrade) herbicides (metabolic resistance) is a great threat to herbicide sustainability and global food production. Metabolic resistance in the economically damaging crop weed species Lolium rigidum is well known but a molecular understanding has been lacking. We purified...
BackgroundThe auxinic herbicide 2,4‐D amine is known, in vitro, as a cytochrome P450 inducer. The current study uses 2,4‐D pre‐treatment, at the whole plant level, to study mechanism(s) of non‐target site based herbicide resistance to the ACCase‐inhibiting herbicide diclofop‐methyl in Lolium rigidum.
ResultsThe 2,4‐D pre‐treatment caused up to 10‐fold shift in LD50 and GR50 in dose–response to subsequently...
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