Enantioselective changes in oxidative stress and toxin release in Microcystis aeruginosa exposed to chiral herbicide diclofop acid

•The first study on enantioselective oxidative stress and toxin release from Microcystis aeruginosa.•Provide information for the R-enantiomer poses more oxidative stress than the S-enantiomer.•Lifecycle analysis of chiral pollutants needs more attention in environmental assessment.