Rhizoctonia blight of turnip green caused by Rhizoctonia solani AG-4 HG-III
2015
Sekiguchi, H. (Western Region Agricultural Research Center, National Agriculture and Food Research Organization, Fukuyama (Japan)) | Toda, T. | Sato, E. | Tomioka, K. | Murakami, H. | Amemiya, R. | Hirako, N. | Nakata, M. | Hyakumachi, M. | Tsushima, S.
Severe wilt was found on seedlings of turnip green (Brassica rapa L., perviridis group) in Ibaraki Prefecture, Japan, from May to September 2013. A fungus repeatedly isolated from diseased plants was identified as Rhizoctonia solani AG-4 HG-III based on culture morphology, anastomosis and sequencing of the internal transcribed spacer region on ribosomal DNA (rDNA-ITS region). Pathogenicity of this isolate to turnip green was confirmed based on inoculation test. Because Rhizoctonia blight of turnip green by AG-4 HG-III has not been reported so far, we propose including it as one of the pathogens causing this disease.
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