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KMID : 0880220120500061075
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Journal of Microbiology
2012 Volume.50 No. 6 p.1075 ~ p.1080
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Molecular phylogenetic status of korean strain of Podosphaera xanthii, a causal pathogen of powdery mildew on Japanese thistle (Cirsium japonicum) in Korea
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Lee Hyang-Burm
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Abstract
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Powdery mildew diseases are sensitive to climate change and spread can be favored by increased temperature and low moisture. During 2011 to 2012, a powdery mildew disease by a Podosphaera species was observed on the leaves of Japanese thistle (Cirsium japonicum) in Korea. The initial sign of this disease included scattered superficial white mycelia on leaves. As the disease progressed, abundant necrotic black spots exhibiting chasmothecia were formed on the leaves. rDNA ITS and 28S homologies of the fungus (EML-CSPW1) showed 100% identity values with those regions from many strains of P. xanthii (syn. P. fusca) via NCBI BLASTN search.
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KEYWORD
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Asteraceae, climate change disease, Japanese thistle, ITS and 28S rDNA sequences, powdery mildew
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