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논문 기본 정보

자료유형
학술저널
저자정보
Do, Yu Jin (Department of Horticultural Science, Gyeongnam National University of Science and Technology [GNTech]) Kim, Do Hyeon (Department of Horticultural Science, Gyeongnam National University of Science and Technology [GNTech]) Jo, Myung Sung (Department of Horticultural Science, Gyeongnam National University of Science and Technology [GNTech]) Kang, Dong Gi (Department of Horticultural Science, Gyeongnam National University of Science and Technology [GNTech]) Lee, Sang Woo (Department of Horticultural Science, Gyeongnam National University of Science and Technology [GNTech]) Kim, Jin-Won (Department of Environmental Horticulture, The University of Seoul) Hong, Jeum Kyu (Department of Horticultural Science, Gyeongnam National University of Science and Technology [GNTech])
저널정보
한국균학회 한국균학회지 한국균학회지 제47권 제3호
발행연도
2019.1
수록면
219 - 232 (14page)

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Chemicals related to hydrogen peroxide ($H_2O_2$) and nitric oxide (NO) generations were exogenously applied to Fusarium oxysporum f. sp. fragariae (Fof) causing Fusarium wilt disease in strawberry plants, and regulations of in vitro conidial germination and mycelial growth of the fungus by the chemical treatments were evaluated. $H_2O_2$ drastically reduced the conidial germination of Fof in a dose-dependent manner, and treatment with 3-amino-1,2,4-triazole (3-AT) catalase inhibitor also led to dose-dependent inhibition of conidial germination but relatively moderately. Gradual decreases in mycelial growth of Fof were found by high concentrations of $H_2O_2$, whilst exogenous 3-AT slightly increased the mycelial growth. Increasing sodium nitroprusside (SNP) NO donor, $N^G$-nitro-l-arginine methyl ester (L-NAME) NO synthase (NOS)-inhibitor and tungstate nitrate reductase (NR) inhibitor led to dose-dependent reductions in conidial germination of Fof in quite different levels. SNP conversely increased the mycelial growth but increasing L-NAME moderately decreased the mycelial growth. Tungstate strongly enhanced mycelial growth. Differentially regulated in vitro mycelial growths of Fof were demonstrated by SNP, L-NAME and tungstate with or without $H_2O_2$ supplement. Superoxide anion production was also regulated during the mycelial growth of Fof by nitric oxide. These results show that $H_2O_2$ and NO-associated enzymes can be suggested as fungal growth regulators of Fof as well as eco-friendly disease-managing agents in strawberry production fields.

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