Podosphaera clandestina causes powdery mildew on sour cherry in Iran

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• 作者：Mahdi Arzanlou ; Mohsen Torbati ; Abolfazl Narmani
• 关键词：Chasmothecia ; Fibrosin bodies ; ITS ; rDNA ; Prunus cerasus
• 刊名：Australasian Plant Disease Notes
• 出版年：2017
• 出版时间：June 2017
• 年：2017
• 卷：12
• 期：1
• 全文大小：1697KB
• 刊物主题：Plant Pathology; Plant Sciences; Agriculture; Entomology; Ecology;
• 出版者：Springer Netherlands
• ISSN：1833-928X
• 卷排序：12

文摘

During 2014–2016, symptoms and signs of a powdery mildew disease were observed on the leaves and twigs of sour cherry (Prunus cerasus) in orchards from Firouragh in the Khoy region (West Azarbaijan province) of Iran. Young leaves and twigs were covered with a powdery growth consisting of mycelium and the asexual reproductive structures of a powdery mildew species. Affected leaves were curled upward and smaller than uninfected leaves, while affected twigs were stunted and often defoliated. The fungus was identified as belonging in the genus Podosphaera, based on morphological characteristics of its asexual state. Chasmothecia were not observed. The PCR amplification and sequencing of its ITS-rDNA revealed that the causal agent was Podosphaera clandestina. This is the first record on the occurrence of P. clandestina on sour cherry in Iran.