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http://dx.doi.org/10.4489/KJM.2016.44.3.201

Occurrence of Leaf Spot Caused by Stemphylium lycopersici on Cirsium setidens in Korea  

Choi, Hyo-Won (Crop Protection Division, National Institute of Agricultural Sciences)
Kim, Seok Gu (Yeongwol Agricultural Technology Center)
Hong, Sung Kee (Microbial Safety Team, National Institute of Agricultural Sciences)
Lee, Young Kee (Crop Protection Division, National Institute of Agricultural Sciences)
Lee, Jae Guem (Crop Protection Division, National Institute of Agricultural Sciences)
Kim, Hyo Won (Crop Protection Division, National Institute of Agricultural Sciences)
Lee, Eun Hyeong (Crop Protection Division, National Institute of Agricultural Sciences)
Publication Information
The Korean Journal of Mycology / v.44, no.3, 2016 , pp. 201-205 More about this Journal
Abstract
In August 2015, leaf spot symptoms were observed on Korean gondre thistle (Cirsium setidens) in Youngwol, Korea. During the early stage, the symptoms appeared as one or more small gray-brown to brown spots on plant leaves. The spots showed extensive enlargement over time and eventually became large dark brown to black lesions on the whole leaf. Stemphylium species were consistently isolated from affected leaves. All isolates were identified as S. lycopersici, S. solani, or S. xanthosomatis based on morphological and cultural characteristics. The isolates were confirmed as S. lycopersici based on a multilocus sequence analysis using the ribosomal internal transcribed spacer (ITS) region, elongation factor 1, GAPDH (glyceraldehyde-3-phosphate dehydrogenase), and the noncoding region between the vacuolar membrane ATPase catalytic subunit A gene and a gene involved in vacuolar biogenesis. Pathogenicity was tested by spore suspension inoculation on wounded or unwounded gondre leaves. The lesions were observed on inoculated leaves within 3 days after inoculation, regardless of wound. To our knowledge, this is the first report of the leaf spot on gondre thistle caused by S. lycopersici in Korea or elsewhere.
Keywords
Gondre; Leaf spot; Stemphylium lycopersici;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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