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http://dx.doi.org/10.5423/RPD.2010.16.1.097

Angular Leaf Spot of Strawberry Caused by Xanthomonas fragariae  

Kwon, Jin-Hyeuk (Gyeongsangnam-do Agricultural Research and Extension Services)
Yoon, Hae-Suk (Gyeongsangnam-do Agricultural Research and Extension Services)
Kim, Jeong-Soon (National Agrobiodiversity Center, National Academy of Agricultural Science, RDA)
Shim, Chang-Ki (National Agrobiodiversity Center, National Academy of Agricultural Science, RDA)
Nam, Myeong-Hyeon (Nonsan Strawberry Experiment Station, Chungcheongnam-do Agricultural Research and Extension Services)
Publication Information
Research in Plant Disease / v.16, no.1, 2010 , pp. 97-100 More about this Journal
Abstract
Angular leaf spot of strawberry caused by Xanthomonas fragariae occurred sporadically in the farmers open field at Sugok-myon, Jinju city, and greenhouse at Okjong-myon, Hadong-gun, Gyeongnam province, Korea. Typical symptoms of angular leaf spot initially appeared as a minute, water-soaked, rotted lesion on the lower leaf surface and the minute spots expanded to form angular leaf spots, usually delimited by small veins. The lesion was translucent under the transmitted light and dark green under reflected light. The slow growing pathogen was a gram-negative, motile bacterium with single polar flagellum, and producing yellowish orange pigment on YDC medium. It showed very strong pathogenicity on the leaves of strawberry. On the basis of biological characteristics and pathogenicity test on host plants, the bacteria was identified as a Xanthomonas fragariae. This is the first report on angular leaf spot of strawberry caused by X. fragariae in Korea.
Keywords
Angular leaf spot; Strawberry; Xanthomonas fragariae;
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