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논문 기본 정보

자료유형
학술대회자료
저자정보
Hyunkyu Sang (Chonnam National University) Haifeng Liu (Chonnam National University) Gahee Lee (Chonnam National University)
저널정보
한국농약과학회 한국농약과학회 학술발표대회 논문집 2021년 한국농약과학회 임시총회 및 추계학술발표회
발행연도
2021.11
수록면
65 - 71 (7page)

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The succinate dehydrogenase inhibitor (SDHI) is a fungicide class containing 12 chemical groups and 24 different compounds and is widely applied to manage plant diseases caused by plant pathogenic fungi. SDHI fungicides inhibit fungal respiration by blocking the ubiquinone-binding site of the mitochondrial succinate dehydrogenase complex composed of four subunits, SdhA, SdhB, SdhC, and SdhD. Currently, SDHI fungicides have been treated to many different crops, fruits, turf, and vegetables and provide effective control of plant diseases. For example, one of the SDHI fungicides, fluopyram, has been used as a seed or foliar treatment for plant disease control and the soybean seed treatment of fluopyram effectively managed soybean sudden death syndrome caused by Fusarium virgulifrome. In addition, this fungicide displayed a good efficacy against the SDHI fungicide boscalid resistant Botrytis cinerea isolates, causing gray mold of grapes. Despite the effective disease control by SDHI fungicides, resistance to SDHI fungicides has been reported in many phytopathogenic fungal species such as Alternaria solani, Botrytis cinerea, Clarireedia homoeocarpa, and Zymoseptoria tritici. Most fungal strains resistant to SDHI fungicides contain mutation(s) in SdhB, SdhC, or SdhD gene and some fungal pathogens exhibited reduced sensitivity to SDHI fungicides harbor overexpression of ATP-binding cassette (ABC) or Major facilitator superfamily (MFS) transporters. In this presentation, the current status of plant disease management by SDHI fungicide applications and molecular mechanisms of SDHI resistance will be discussed.

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