Aspergillus terreus Thom a new pathogen that causes foliar blight of potato

摘要

Foliar blight of potato caused by Aspergillus terreus is reported for the first time. The blight is characterized by a brown leaf apex amounting to 35?65% of the total leaf surface. The pathogen was identified on the basis of morphological characters and ribosomal DNA sequence data. The fungus produced effuse white colonies, branched hyphae, broom-like conidiophores, and globose accessory conidia measuring 1.5?2.3 μm in diameter. Koch’s postulates were confirmed by performing pathogenicity test on healthy potato plants.