First Report of Fusarium subglutinans Causing Leaf Spot Disease on Cymbidium Orchids in Korea
2015
Han, K.S., National Institute of Horticultural and Herbal Science, RDA, Wanju, Republic of Korea | Park, J.H., National Institute of Horticultural and Herbal Science, RDA, Wanju, Republic of Korea | Back, C.G., National Institute of Horticultural and Herbal Science, RDA, Wanju, Republic of Korea | Park, M.J., National Institute of Horticultural and Herbal Science, RDA, Wanju, Republic of Korea
In 2006~2010, leaf spot symptoms, that is, small, yellow spots that turned into dark brown-to-black lesions surrounded by a yellow halo, were observed on Cymbidium spp. in Gongju, Taean, and Gapyeong in Korea. A Fusarium species was continuously isolated from symptomatic leaves; in pathogenicity testing, isolates caused leaf spot symptoms consisting of sunken, dark brown lesions similar to the original ones. The causal pathogen was identified as Fusarium subglutinans based on morphological and translation elongation factor 1-alpha sequence analyses. This is the first report of F. subglutinans as the cause of leaf spot disease in Cymbidium spp. in Korea.
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