Rhizoctonia blight of turnip green caused by Rhizoctonia solani AG-4 HG-III
2015
Sekiguchi, Hiroyuki | Toda, Takeshi | Sato, Erika | Tomioka, Keisuke | Murakami, Hiroharu | Amemiya, Ryota | Hirako, Naoyuki | Nakata, Masato | Hyakumachi, Mitsuro | Tsushima, Seiya
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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