The Korean Journal of Mycology (한국균학회지)

The Korean Society of Mycology (한국균학회)
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Leaf Blight Caused byCurvularia intermedia on the Invasive Weed Lactuca serriola in Korea

  • Jin A Lee (Department of Biological Science, Kunsan National University) ;
  • Seon Young Lee (Center for Convergent Agrobioengineering, Kunsan National University) ;
  • Young-Joon Choi (Department of Biological Science, Kunsan National University)
  • Received : 2023.07.19
  • Accepted : 2023.08.23
  • Published : 2023.09.30
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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 non-target effects.

Keywords

Acknowledgement

This work was supported by the National Academy of Agricultural Science grants (PJ014956011 and RS-2023-00261783) from the Rural Development Administration of Korea.

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