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Poster

Session: Session 1 Presenting Authors at Posters (Odds)

P-113 - Endophytic bacteria associated with ginseng exhibited antagonism against soil-borne pathogens

Monday, July 14, 2025
13:30 - 15:15  
Location: Confex Hall 3
Management of diseases and emerging diseases

    Presenting Author(s)

  • CH

    Chi Eun Hong

    RDA, NIHHS
    Eumseong, Ch'ungch'ong-bukto, Republic of Korea

    • Author(s)

  • SK

    Sung Yeon Kim

    NIHHS/RDA
    Eumseong, Ch'ungch'ong-bukto, Republic of Korea

  • YK

    Yong Il Kim

    NIHHS/RDA
    Eumseong, Ch'ungch'ong-bukto, Republic of Korea

  • IJ

    In Bok Jang

    NIHHS/RDA
    Eumseong, Ch'ungch'ong-bukto, Republic of Korea

  • SK

    Soohong Kim

    NIHHS/RDA
    Eumseong, Ch'ungch'ong-bukto, Republic of Korea

  • YK

    Young-Chang Kim

    NIHHS/RDA
    Eumseong, Ch'ungch'ong-bukto, Republic of Korea

A valuable medicinal plant, Panax ginseng is vulnerable to various stresses such as fungal diseases, due to being cultivated in the same field for 4 to 6 years. In particular, root rot disease of ginseng, caused by the Ilyonectria species, is a major cause of continuous cropping damage and causes significant harm to ginseng. However, chemical control is difficult due to the risk of fungicide residues, making eco-friendly approaches for disease control essential.

 In this study, we screened endophytic bacteria from ginseng showing antifungal activities against soil-borne pathogens such as I. mors-panacis, Pythium ultimum and Phytophthora cactorum. A total of 311 strains were previously isolated from ginseng based on age(2~4 years) and tissue type(root, stem, leaf, and flower stalk). A dual culture assay was conducted with each pathogen. Twenty-two strains belonging to the Bacillus genus inhibited mycelial growth of each pathogen by 20~40%. We also confirmed that Bacillus velezensis could decrease the disease incidence by 23% through a pot assay.

 These results suggest that endophytic bacteria from ginseng could be applied as biological control agents to protect ginseng from soil-borne pathogens.