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http://dx.doi.org/10.5423/RPD.2012.18.1.045

Zonate Leaf Spot of Acer negundo Caused by Cristulariella moricola in Korea  

Cho, Sung-Eun (Division of Environmental Science and Ecological Engineering, Korea University)
Park, Ji-Hyun (Division of Environmental Science and Ecological Engineering, Korea University)
Lee, Sang-Hyun (Division of Forest Diseases and Insect Pests, Korea Forest Research Institute)
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
Research in Plant Disease / v.18, no.1, 2012 , pp. 45-48 More about this Journal
Abstract
In early August of 2011, following a prolonged period of cool and moist weather, several trees of boxelder maple (Acer negundo) planted in Mt. Soyo located in Dongducheon, Korea, were found to be heavily damaged by premature defoliation with zonate leaf spot symptoms. Numerous number of cone-shaped, white sporophores (conidia) were observed on lesions of the abaxial leaf surface. The morphological characteristics of conidia are of typical Cristulariella moricola, which was supported by analyzing sequences of internal transcribed spacer region of ribosomal DNA. Pathogenicity of the fungus was proved by artificial inoculation in the condition of relative humidity 100% and $18{\pm}2^{\circ}C$. This is the first report of the occurrence of zonate leaf spot caused by infection of C. moricola on A. negundo in Korea.
Keywords
Acer negundo; Boxelder maple; Cristulariella moricola; C. pyramidalis; Zonate leaf spot;
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