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Identification and Characterization of Gonatobotryum apiculatum Causing Leaf Spot and Blight on Sinowilsonia henryi

Mycobiology 2020년 48권 1호 p.70 ~ 74
 ( Gao Ying ) - Yangtze University College of Agriculture Department of Plant Protection

 ( Liu Hai Feng ) - Yangtze University College of Agriculture Department of Plant Protection
 ( Song Zheng Xing ) - Chungnam National University College of Agriculture and Life Sciences Department of Applied Biology
 ( Du Xiao Ying ) - Yangtze University College of Agriculture Department of Plant Protection
 ( Deng Jian Xin ) - Yangtze University College of Agriculture Department of Plant Protection

Abstract


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.

키워드

Gonatobotryum; Dothioraceae; morphology; phylogeny; pathogenicity
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