Effects of Ozone on the Sporulation, Germination, and Pathogenicity of Botrytis cinerea

KRAUSE, C. R. and T. C. WEIDENSAUL. 1978. Effects of ozone on the sporulation, germination, and pathogenicity of Botrytis cinerea. Phytopathology 68:195-198. Studies were made to determine if Botrytis cinerea conidia infection than non-ozonized conidia based on total lesion remain viable when grown in vivo and in vitro in the presence area. No Botrytis lesions were induced on detached leaves of ambient ozone levels and whether ozonized conidia retain inoculated with ozonized conidia. Results indicated that pathogenicity. Ozone at 599 Ag/m 3 (0.30 ppm) for two 6-hr ozonization of conidia produced in vivo and in vitro periods significantly inhibited B. cinerea sporulation and decreased germination of conidia, germ tube length, germination in vivo and in vitro. Conidia ozonized in vitro at pathogenicity, and/or virulence. 299 mg/m 3 (0.15 ppm) for two 6-hr periods caused less