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KMID : 1098420130210010027
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Korean Journal of Medicinal Crop Science
2013 Volume.21 No. 1 p.27 ~ p.31
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Identification of Fungal Pathogen Causing Seedling Rot of Lithospermum erythrorhizon and Study on the Optimum Growing Temperature for Decreasing of the Seedling Rot
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Ahn Tae-Jin
Shin Kyu-Seop
Ahn Young-Sup
Hur Mok
Park Chung-Berm
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Abstract
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This study was conducted to isolate and identify the fungal pathogen causing seedling rot of Lithospermum erythrorhizon Siebold & Zuccarini, and to know the optimum growing temperature for decreasing seedling rot of ithospermum erythrorhizon. On the basis of morphological characteristics, EF-1a sequence analysis, and pathogenecity to host plant,
the fungi isolated from seedling rot and seeds of Lithospermum erythrorhizon were identified as Fusarium fujikuroi, indicating that disease causing fungus is seed-borne pathogen. Optimum temperature for germination of seeds of Lithospermum erythrorhizon was 15 ~ 20℃, but pathogenicity of Fusarium fujikuroi was shown more readily at 25 ~ 30℃. These results suggested that seedling culture of Lithospermum erythrorhizon between 15℃ and 20℃ might reduce seedling rot of Lithospermum erythrorhizon caused by seed-borne pathogen Fusarium fujikuroi.
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KEYWORD
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Lithospermum erythrorhizon, Seedling Rot, Fusarium fujikuroi, Pathogen
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