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KMID : 1160220200480010070
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Mycobiology
2020 Volume.48 No. 1 p.70 ~ p.74
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Identification and Characterization of Gonatobotryum apiculatum Causing Leaf Spot and Blight on Sinowilsonia henryi
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Gao Ying
Liu Hai Feng
Song Zheng Xing
Du Xiao Ying
Deng Jian Xin
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Abstract
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Sinowilsonia henryi is a rare and endangered plant, as well as an endemic species in China. In July 2018, leaf spot and blight disease was observed on S. henryi in Yichang, Hubei, China. A fungus isolated from disease tissues was identified as Gonatobotryum apiculatum based on morphology and sequence analyses of ITS and LSU regions. Phylogenetic analyses indicated that the species belongs to Dothioraceae (Dothideales). Morphologically, the species produced two distinct types of conidia from authentic media, both conidia were described here. Pathogenicity tests showed that the fungus is a pathogen causing leaf spots on S. henryi. This is the first report of leaf spot and blight disease on S. henryi caused by G. apiculatum in China.
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KEYWORD
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Gonatobotryum, Dothioraceae, morphology, phylogeny, pathogenicity
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