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콩 시들음병에 관여하는 Fusarium균의 다양성 및 병원학적 특성

Diversity and Pathogenic Characteristics of Fusarium Species isolated from Wilted Soybeans in Korea

한국균학회지 2020년 48권 3호 p.297 ~ 312
최효원, 김승노, 홍성기,
소속 상세정보
최효원 ( Choi Hyo-Won ) - National Institute of Agricultural Sciences Crop Protection Division
김승노 ( Kim Seung-Noh ) - Taean Agricultural Technology Center
홍성기 ( Hong Sung-Kee ) - National Institute of Agricultural Sciences Crop Protection Division

Abstract


Wilted soybean plants were collected from soybeans cultivation fields in Korea from 2014 to 2016. Fusarium spp., Colletotrichum spp., Rhizoctonia spp., Macrophomina sp., Phytophthora spp., and Calonectria ilicicola were obtained from the infected samples. Out of these, Fusarium spp. were the dominant species (79.1%). In total, 53 isolates were identified as F. solani species complex, F. oxysporum species complex, F. graminearum species complex, and F. fujikuroi species complex based on mycological characteristics. Sequence typing analysis was conducted using translation elongation factor 1 alpha (TEF) to confirm the identification of isolates. All isolates were identified as F. solani, F. oxysporum, F. commune, F. asiaticum, and F. fujikuroi based on phylogenetic analysis of TEF sequences. Pathogenicity of 44 isolates was tested on three cultivars of soybean using the root dip inoculation method. Out of 5 Fusarium species, only F. asiaticum could not cause the symptoms or be weak. Ten isolates were selected based on pathogenic characters and species identification to investigate the host range and screen soybean cultivars for resistance. Fusarium solani, F. oxysporum, and F. commune were aggressive only to soybean, and F. fujikuroi was aggressive to kidney bean, yellow cowpea, black cowpea, adzuki bean as well as soybean.
All 13 Korean soybean cultivars were susceptible to F. commune and F. fujikuroi. Out of 13 cultivars, cv. Janggi, cv. Poongsannamul, and cv. Socheongja were resistant to Fusarium wilt, while cv. Hwanggeumol and Chamol were susceptible to Fusarium wilt.

키워드

Fusarium wilt; soybean; Fusarium species complex

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