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KMID : 0379120230510010063
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Korean Journal of Mycology
2023 Volume.51 No. 1 p.63 ~ p.68
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Incidence of Beet Leaf Spot Caused by Neocamarosporium betae in Korea
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Lee Gyo-Bin
Shim Hong-Sik
Cho Weon-Dae
Kim Wan-Gyu
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Abstract
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From June to August 2021, we surveyed diseases affecting beet (Beta vulgaris subsp.
vulgaris) plants in Cheolwon, Hoengseong, and Pyeongchang regions in Gangwon Province, Korea. We observed severe leaf spot symptoms, such as brown to dark circular or irregular spots on the leaves, in plants. Disease incidence in the plant leaves in the fields investigated at the three locations ranged from 1 to 80%. Five single-spore isolates of Phoma sp. were obtained from the diseased leaves and identified as Neocamarosporium betae based on their cultural, morphological, and molecular characteristics. Three isolates of N. betae were subsequently tested to confirm their pathogenicity in beet plants via artificial inoculation.
The tested isolates caused leaf spot symptoms in the inoculated plants, similar to those observed in the plants in the investigated fields. Therefore, our findings revealed N. betae as the pathogen causing beet leaf spot in Korea
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KEYWORD
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Beet, Beta vulgaris, Leaf spot, Neocamarosporium betae
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