Morphological and Molecular Characterization of Pseudocercospora chionanthi-retusi Causing Leaf Spot on Chionanthus retusus in Korea

Leaves of Chionanthus retusus were found to be damaged by leaf spot disease associated with a fungus in Iksan, Korea. Leaf spots were angular to irregular, vein-limited, scattered, 1–8 mm diameter, brownish-gray to dark brown when dry, with heavy fructification. The pathogen causes premature defolia...

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Published inSigmulbyeong yeon'gu Vol. 28; no. 2; pp. 57 - 60
Main Authors Choi, In-Young, Abasova, Lamiya, Choi, Joon-Ho, Shin, Hyeon-Dong
Format Journal Article
LanguageEnglish
Published 한국식물병리학회 01.06.2022
Hanrimwon Publishing Company
Subjects
cercosporoid fungi
chinese fringe tree
multi-locus dna sequencing
mycosphaerellaceae
plant pathogen
Multi-locus DNA sequencing
Cercosporoid fungi
Chinese fringe tree
Mycosphaerellaceae
Plantpathogen
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Summary:Leaves of Chionanthus retusus were found to be damaged by leaf spot disease associated with a fungus in Iksan, Korea. Leaf spots were angular to irregular, vein-limited, scattered, 1–8 mm diameter, brownish-gray to dark brown when dry, with heavy fructification. The pathogen causes premature defoliation of C. retusus plant and was identified as Pseudocercospora chionanthi-retusi based on morphological and molecular-phylogenetic analyses. The phylogenetic tree was constructed using multi-locus DNA sequence data of partial actin (actA), partial translation elongation factor 1-alfa (ef1A), partial DNA-directed RNA polymerase II second largest subunit (rpb2) genes, and internal transcribed spacer regions. Current study provides detail morphological description of P. chionanthi-retusi on C. retusus in Korea, with supports of phylogenetic analysis and pathogenicity test.
ISSN:1598-2262
2233-9191
DOI:10.5423/RPD.2022.28.2.57