Colletotrichum acutatum Simmonds ex Simmondsによる萎凋性のイチゴ炭疽病の発生

抄録

In 2006, crown rot of strawberry (Fragaria×ananassa Duchesne cv. Kentaro) was observed in production field in Hokkaido, Japan. The causal agent was identified as Colletotrichum acutatum Simmonds ex Simmonds, based on morphological characteristics, sensitivity to the fungicides benomyl and diethofencarb, and results of a polymerase chain reaction (PCR) using a specific primer. Inoculation tests with C. acutatum revealed that the fungus caused the same symptoms on strawberry plants and was reisolated from the symptoms. This is the first report of anthracnose crown rot on strawberry caused by C. acutatum in Japan.