Photosynthetic characteristics and molecular basis of resistance to atrazine in a Czech biotype of redroot pigweed

Abstract

A mutation in the psbA gene that coded for an amino acid substitution of glycine for serine at residue 264 of the D1 protein was identified in Amaranthus retroflexus. This mutation is the most likely cause for triazine resistance in this biotype.

Keywords

• Amaranthus retroflexus L.
• triazines
• herbicide resistance
• chlorophyll fluorescence
• Hill reaction activity
• psbA gene
• D1 protein
• target site