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Diversity and pathogenic characteristics of the Fusarium species isolated from minor legumes in Korea

Nature Scientific Reports

Min Sun Ha
Hyunjoo Ryu
Ho Jong Ju 
Hyo-Won Choi 

Scientific Reports volume 13, Article number: 22516 (2023) 

Legumes are primarily grown agriculturally for human consumption, livestock forage, silage, and as green manure. However, production has declined primarily due to fungal pathogens. Among them, this study focused on Fusarium spp. that cause Fusarium wilt in minor legumes in Korea. Diseased legume plants were collected from 2020 to 2021, and diverse fungal genera were isolated from the internal tissues of the plant roots and stems. Fusarium spp. were the most dominant, accounting for 71% of the isolates. They were identified via morphological characteristics and molecular identification. In the pathogenicity test, Fusarium oxysporum and Fusarium fujikuroi generally exhibited high virulence. The host range investigation revealed that the NC20-738, NC20-739, and NC21-950 isolates infected all nine crops, demonstrating the widest host range. In previous studies, the focus was solely on Fusarium wilt disease in soybeans. Therefore, in this study, we aimed to investigate Fusarium wilt occurred in minor legumes, which are consumed as extensively as soybeans, due to the scarcity of data on the diversity and characteristics of Fusarium spp. existing in Korea. The diverse information obtained in this study will serve as a foundation for implementing effective management strategies against Fusarium-induced plant diseases.

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