title: Herbicide resistance and cross-resistance: changes at three distinct sites in the herbicide-binding protein.
abstract: Plants and algae resistant to the commonly used s-triazine herbicides display a wide spectrum of cross-resistance to other herbicides that act in a similar manner. Analysis of uniparental mutants of the green alga Chlamydomonas reinhardi showed that three different amino acid residues in the 32-kilodalton thylakoid membrane protein can be independently altered to produce three different patterns of resistance to s-triazine and urea-type herbicides. These results clarify the molecular basis for herbicide resistance and cross-resistance. Two of the mutations do not alter normal electron transport and thus may have applications of agronomic interest.
authors.forename: J M
authors.initials: JM
authors.lastname: Erickson
authors.forename: M
authors.initials: M
authors.lastname: Rahire
authors.forename: J D
authors.initials: JD
authors.lastname: Rochaix
authors.forename: L
authors.initials: L
authors.lastname: Mets