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KMID : 1160220100380010078
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Mycobiology
2010 Volume.38 No. 1 p.78 ~ p.80
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Leaf Spot of Yam Caused by Pseudophloeosporella dioscoreae in Korea
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Hong Sung-Kee
Kim Wan-Gyu
Lee Young-Kee
Choi Hyo-Won
Choi Kyung-Jin
Lee Sang-Yeob
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Abstract
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Leaf spot symptoms were frequently observed on yam plants grown in the Yeoju area in Korea during a disease survey in 2008. A total of five isolates of Pseudophloeosporella sp. were obtained from the infected leaves of yam plants. All of the isolates were identified as Pseudophloeosporella dioscoreae based on their morphological and cultural characteristics. A phylogenetic tree derived from the internal transcribed spacer sequences of the fungal isolates showed that the fungus is distinctly separated from species in other related genera. P. dioscoreae isolates caused very tiny spots on leaves of yam plants two weeks after artificial inoculation which were similar to those observed in the field. This is the first report that Pseudophloeosporella dioscoreae causes leaf spot in yams in Korea.
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KEYWORD
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Leaf spot, Pseudophloeosporella dioscoreae, Yam
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