Assessing Sensitivity to Antifungal Plant Compounds or Agrochemicals.

Botrytis cinerea, a major fungal pathogen of crops, has been extensively studied for its resistance to antifungal plant metabolites and agrochemicals. Evaluating the sensitivity of B. cinerea to these compounds is crucial for understanding its pathogenicity and for developing effective plant protection strategies. This study describes two methods for antifungal sensitivity assessment: the spot assay, which visualizes fungal growth on agar medium supplemented with antifungal compounds, and the resazurin assay, which quantifies fungal metabolic activity in liquid culture. Using saponins as antifungal compounds, we demonstrate the utility of these methods on B. cinerea. These methods provide simple, reliable, and reproducible protocols to assess the sensitivity of antifungal compounds on B. cinerea.