Antifungal activity
Microbial strain
T. capitatus essential oil was tested against the soil-borne fungus Sclerotium cepivorum Berk. isolated from sclerotia produced on Tropea red onion showing symptoms of white rot. Surface disinfected sclerotia were plated on potato dextrose agar (PDA, Liofilchem, Italy) amended with antibiotics (streptomycin sulphate 50 μg mL-1, ampicillin sodium salt 50 μg mL-1, Sigma Aldrich). The plates were incubated at 24 °C in the dark for 10 days to allow the mycelial growth. Small agar blocks containing hyphal tips were cut from the colony margins and transferred to fresh PDA and incubate at 24 °C in the dark