A mutant of Arabidopsis thaliana, two hundred times more resistant to the imidazolinone herbicide imazapyr than wild-type plants, was isolated by direct selection of seedlings from a mutagenized population. Genetic analysis showed that resistance is due to a single dominant nuclear mutation that could not be separated by recombination from a mutation in the CSR1 gene encoding acetohydroxy acid ...

The increasing use of herbicides in recent years for improved crop yields requires a risk assessment. To assess their impact on soil, the an indicator named synthetic biological (ISB%) is proposed, which includes range biotic and enzymatic parameters derived from previous experiments. Three sulfonylurea were evaluated, chlorsulfuron, amidosulfuron, tifensulfuron. monitored using different herbi...