doi: 10.4489/KJM.520411 Citation BibTeX RIS Mendeley

First Report of Powdery Mildew Caused by Golovinomyces ambrosiae on the Invasive Weed Symphyotrichum subulatum in Korea

First Report of Powdery Mildew Caused by Golovinomyces ambrosiae on the Invasive Weed Symphyotrichum subulatum in Korea

• Jun Hyuk Park (Department of Biological Science, Kunsan National University, Gunsan 54150, Korea)
• Young-Joon Choi (Department of Biological Science, Kunsan National University, Gunsan 54150, Korea)
• Hyeon-Dong Shin (Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Korea)

Since the 1980s, an invasive plant, Symphyotrichum subulatum, has become widely naturalized in Korea, competing with native plants and disrupting ecosystems. Since powdery mildew symptoms were initially observed on S. subulatum on a riverside in Busan in 2007, infected plants have been continuously observed. Morphological examination and phylogenetic analysis confirmed Golovinomyces ambrosiae as the causal agent. This study reports the first occurrence of powdery mildew caused by G. ambrosiae on S. subulatum in Korea. Given that this pathogen completes its life cycle by developing its sexual stage in Korea, it poses a potential threat to S. subulatum and other Asteraceae plants.