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Antifungal activities of Chaetomium spp. against Fusarium wilt of tea

Author

Listed:
  • Nguyen Huu Phong

    (Department of Plant Production Technology, Faculty of Agricultural Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand
    Northern Mountainous Agriculture and Forestry Science Institute, Phu Tho, Vietnam)

  • Wattanachai Pongnak

    (Department of Plant Production Technology, Faculty of Agricultural Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand)

  • Kasem Soytong

    (Department of Plant Production Technology, Faculty of Agricultural Technology, King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand)

Abstract

An isolate of Fusarium denominated as NHP-Fusa-2 from tea wilt and root-rot diseased sample collected in Vietnam was identified as Fusarium oxysporum based on molecular analysis of translation elongation factor-1α sequence. Interestingly, it is the first time F. oxysporum is reported as a causal pathogen of wilt and root-rot disease of tea in Vietnam. Chaetomium spp. were investigated to control F. oxysporum NHP-Fusa-2 in in vitro test. Three antagonists (Ch. cupreum CC3003, Ch. globosum CG05, and Ch. lucknowense CL01) inhibited mycelial growth by 31.69-34.03% and reduced conidial production of the pathogen by 67.25-75.92% in the bi-culture antagonistic test after 30 days with non-significant difference in their effect. All the crude extracts of these antagonists significantly inhibited mycelial growth and conidial production of NHP-Fusa-2. MeOH extract of CC3003 was more effective in conidial inhibition of the pathogen than the others, the effective dose (ED50) was 85.30 μg/ml of which, it was hexane (49.32 μg/ml) and EtOAc extract (62.17 μg/ml) in the case of CG05 and CL01, respectively.

Suggested Citation

  • Nguyen Huu Phong & Wattanachai Pongnak & Kasem Soytong, 2016. "Antifungal activities of Chaetomium spp. against Fusarium wilt of tea," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 52(1), pages 10-17.
    • Handle: RePEc:caa:jnlpps:v:52:y:2016:i:1:id:34-2015-pps
    DOI: 10.17221/34/2015-PPS
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    Cited by:

    1. Caiyun Liu & Jing Zhao & Hui Cao, 2021. "Study on the antifungal effect and mycolytic activity of the biocontrol agent Chaetomium subaffine LB-1," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 57(4), pages 289-296.

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