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- Title
Root and stem rot of chrysanthemum caused by five Pythium species in Japan.
- Authors
Tsukiboshi, Takao; Chikuo, Yoshiaki; Ito, Yoko; Matsushita, Yosuke; Kageyama, Koji
- Abstract
Root and stem rot with wilt of above ground parts of cultivated chrysanthemums was first found in Ibaraki, Toyama and Kagawa prefectures, Japan in 2002 and 2003. Pythium species were isolated from the diseased tissues and identified as P. dissotocum, P. oedochilum, P. sylvaticum, P. ultimum var. ultimum and asexual strains of P. helicoides based on their morphologies and sequences of rDNA-ITS region. All the Pythium species were strongly pathogenic to chrysanthemums in pot conditions and were reisolated from the inoculated plants. Because Pythium root and stem rot of chrysanthemum has never been reported in Japan, we propose that this is a new disease that can be caused by the five Pythium species.
- Subjects
CHRYSANTHEMUMS; PYTHIUM; PLANT diseases; PLANT cells &; tissues; DISEASED plants
- Publication
Journal of General Plant Pathology, 2007, Vol 73, Issue 4, p293
- ISSN
1345-2630
- Publication type
Article
- DOI
10.1007/s10327-007-0015-y