• 한국균학회지
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• 제49권4호
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• pp.539-545
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• 2021

한국의 무화과나무 모무늬잎마름 증상에 관여하는 한 균주의 Cercospora류 곰팡이가 형태적으로는 Passalora속에 속하지만 계통학적으로는 Pseudocercospora속에 속한다고 알려져 있다. 이 문제를 해결하기 위하여, 6점의 시료를 현미경으로 검경하였으며 두 균주를 염기서열 분석하였다. 그 결과, 이들 시료의 곰팡이는 형태적으로는Passalora bolleana와 일치하였다. ITS와 LSU 염기서열을 분자계통학적으로 분석한 결과 이들 두 균주가 Pseudocercospora속 집락에 위치하였다. 결과적으로, 한국 유래의 세 균주(본 연구의 두 균주와 이전의 한 균주)와 루마니아 유래의 한 균주는 모두 Pseucocercospora bolleana로 동정되었다. 추가적으로, 대만과 한국에서 무화과나무 점무늬병균으로 알려진 Pseudocercospora fici-caricae와도 비교하고 토의하였다.

• Mycobiology
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• 제48권5호
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• pp.418-422
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• 2020

In 2016, a cercosporoid fungus was found from leaf spot symptoms on melon in Korea. The fungus isolated from the plant was identified based on morphological characteristics and sequence analyses of five genes (ITS rDNA, translation elongation factor 1-α, actin, calmodulin, and histone H3). The fungal isolate was found to be pathogenic to melon. The results confirm that the fungus associated with leaf spot on melon was Cercospora cf. flagellaris. This is the first report of Cercospora cf. flagellaris causing Cercospora leaf spot on melon in Korea.

• 식물병연구
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• 제28권2호
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• pp.57-60
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• 2022

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 (tef1), 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.