Figure 1.

Field symptoms and pathogenicity of M. sextelata cobweb disease. (A–D) Field symptoms at different stages of the disease. (A): initial disease symptoms; (B,C): middle disease symptoms; (D): late disease symptoms. (E–H) Pathogenicity test where a spore suspension with a concentration of 5 × 10⁶ spores/mL was sprayed. (E): The symptoms of M. sextelata fruiting bodies 7 days after inoculation; (F): after 12 days of inoculation M. sextelata fruiting bodies stopped developing and suffered from soft rot; (G): after 15 d of inoculation, the fruiting bodies collapsed and died; (H): control, no disease symptoms appeared after 15 d of inoculation with sterile water.