Abstract
Japanese monkshood (Aconitum japonicum subsp. subcuneatum) with stem rot and root rot were found in two fields in Hokkaido and Toyama, Japan, in 2015. The isolate obtained from Hokkaido was identified as Rhizoctonia solani anastomosis group (AG)-5, and the isolate from Toyama was binucleate Rhizoctonia AG-U based on the number of nuclei, hyphal fusion reactions, and sequences of the rDNA-ITS region. The symptoms were reproduced in inoculation tests. This is the first report of stem and root rot of monkshood caused by Rhizoctonia spp. in Japan.
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Acknowledgements
We thank Drs. Y. Takao, Y. Tatsuo, Y. Murakami, F. Kurosaki (Toyama University) and K. Chiba (Hokkaido Prefectural Ishikari Agricultural Extension Center, Japan) for their help.
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The nucleotide sequence data reported are available in the DDBJ/EMBL/GenBank databases as accessions LC416537 and LC416538.
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Mori, M., Misawa, T. & Sato, T. First report of stem and root rot of monkshood caused by Rhizoctonia spp. in Japan. J Gen Plant Pathol 86, 224–226 (2020). https://doi.org/10.1007/s10327-020-00906-6
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DOI: https://doi.org/10.1007/s10327-020-00906-6