Anthracnose of black locust caused by Colletotrichum nymphaeae (Passerini) Aa

摘要

Brown spots were found on leaves of black locust (Robinia pseudoacacia L.) in Nagano Prefecture, Japan, in August 2011. A fungus isolated from the diseased leaves reproduced the symptoms after inoculation, and was re-isolated from the lesions. The pathogen was identified as Colletotrichum nymphaeae based on morphological and molecular analyses. This is the first report of C. nymphaeae as a pathogen of anthracnose of black locust in Japan.