Research in Plant Disease 2010;16(1):97-100.
Published online April 30, 2010.
Xanthomonas fragariae에 의한 딸기 세균성모무늬병
권진혁, 윤혜숙, 김정순, 심창기, 남명현
 
Angular Leaf Spot of Strawberry Caused by Xanthomonas fragariae
Jin Hyeuk Kwon, Hae Suk Yoon, Jeong Soon Kim, Chang Ki Shim, Myeong Hyeon Nam
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.
Key Words: Angular Leaf spot, Strawberry, Xanthomonas fragariae


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