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KMID : 0379120000280020118
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Korean Journal of Mycology
2000 Volume.28 No. 2 p.118 ~ p.120
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A Newly Identified Hypogeous Mushroom of Korea , Lelanogaster tuberiformis
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Koo Chang-Duck
Kim Je-Su
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Abstract
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A destructive collar rot of Doonggulle (Polygonatum odoratum var. pluriflorum) occurred in an experimental farm at Hamyang Medicinal Plant Experiment Station, Kyongnam ARES in 1999. The disease also observed in farmer´s fileds in Hamyang and the infection rate reached up to 12.3%. Upper parts of the infected plants were mostly blighted and white mycelial mats were formed on the lesions or soil lines near the stem. The fungus readily formed sclerotia on PDA and then shapes were globoid or irregular, and sized 0.9∼6.8×0.6∼5.2㎜ (av 2.7∼2.3㎜). Although the fungus showed wide range of mycelial growth temperature, the optimum temperature was about 30℃. The typical sclerotium type and clamp connections of hyphae were found in the fungus Brawn in PDA. The causal fungus was identified as Sclerotium rolfsii on the basis of mycological characteristics and pathogenicity that an the host plants. This is the first report on the collar rot of Polygonatum odoratum caused by Sclerotium rolfsii in Korea.
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