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http://dx.doi.org/10.5423/PPJ.2011.27.1.085

Outbreak of Powdery Mildew on Zinnia elegans by Golovinomyces cichoracearum in Korea, 2008-2010  

Park, Mi-Jeong (Division of Environmental Science and Ecological Engineering, Korea University)
Park, Ji-Hyun (Division of Environmental Science and Ecological Engineering, Korea University)
Kim, Hong-Gi (Department of Applied Biology, Chungnam National University)
Lee, Soon-Gu (Department of Plant Medicine, Andong National University)
Koh, Young-Jin (Department of Plant Medicine, Sunchon National University)
Kim, Byung-Sup (Department of Plant Science, Gangneung-Wonju National University)
Cha, Byeong-Jin (Department of Plant Medicine, Chungbuk National University)
Lee, Hyang-Burm (Division of Applied Bioscience and Biotechnology, Chonnam National University)
Shin, Hyeon-Dong (Division of Environmental Science and Ecological Engineering, Korea University)
Publication Information
The Plant Pathology Journal / v.27, no.1, 2011 , pp. 85-88 More about this Journal
Abstract
Podosphaera fusca (syn. Sphaerotheca fusca, S. fuliginea) is a causal agent of powdery mildew infections on Zinnia elegans, and has been documented in Korea since 1967. An outbreak involving about 1,000 plants in October 2008, in Yangpyeong, Korea, was caused by Golovinomyces cichoracearum. Further surveys of zinnia powdery mildew from 2008-2010 confirmed the widespread occurrence of Zinnia-Golovinomyces association in Korea. Chasmothecia of this fungus have not been found on Z. elegans in Korea. Analysis of internal transcribed spacer rDNA from five Korean collections confirmed the powdery mildew as G. cichoracearum. Comparison with the those from GenBank revealed 100% identity with sequences from zinnia powdery mildew, forming a monophyletic clade with 100% bootstrap support, and with those of G. cichoracearum parasitic on the hosts belonging to the tribe Heliantheae of the family Asteraceae.
Keywords
Heliantheae; ITS sequence; Podosphaera fusca; Reticuloidium;
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