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KMID : 0379120230510030245
Korean Journal of Mycology
2023 Volume.51 No. 3 p.245 ~ p.249
Leaf Blight Caused by Curvularia intermedia on the Invasive Weed Lactuca serriola in Korea
Lee Jin-A

Lee Seon-Young
Choi Young-Joon
Abstract
Prickly lettuce (Lactuca serriola), an invasive annual plant, poses a significant threat to the agricultural systems of many countries, including Korea. In 2020, leaf blight symptoms were observed in the prickly lettuce populations of various farms across Korea. Detailed morphological and molecular sequence analyses revealed that the disease was caused
by the fungus, Curvularia intermedia. A pathogenicity test confirmed that the fungus can cause the same symptoms in healthy prickly lettuce, thereby fulfilling Koch¡¯s postulates. To the best of our knowledge, this is the first report of C. intermedia causing leaf blight on L. serriola in Korea, suggesting its potential as a biocontrol agent for this weed. However,
further investigations are necessary to determine its ecological impact to prevent any nontarget effects.
KEYWORD
Biological control, gpd (glyceraldehyde-3-phosphate dehydrogenase), Lactuca scariola, Prickly lettuce
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