Dothiorella canker is caused by fungi in which genera?

Dothiorella canker is caused by fungi in which genera?

• A. Botryosphaeria and Fusicoccum
• B. Dothiorella and Fusicoccum
• C. Botrytis and Fusarium
• D. Botryosphaeria and Phytophthora

Answer: (A)

Dothiorella canker is caused by fungi in the Botryosphaeriaceae group, and in this group the same organisms are described under two different names depending on their life stage. The sexual form is placed in Botryosphaeria, while the asexual form is placed in Fusicoccum. Because these pathogens cause the same disease complex across life stages, the genera Botryosphaeria and Fusicoccum are the best way to refer to them. The other fungi listed are associated with different diseases or groups and don’t describe this canker complex.

Dothiorella canker is caused by fungi in the Botryosphaeriaceae group, and in this group the same organisms are described under two different names depending on their life stage. The sexual form is placed in Botryosphaeria, while the asexual form is placed in Fusicoccum. Because these pathogens cause the same disease complex across life stages, the genera Botryosphaeria and Fusicoccum are the best way to refer to them. The other fungi listed are associated with different diseases or groups and don’t describe this canker complex.