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Acta Horticulturae Sinica ›› 2026, Vol. 53 ›› Issue (6): 1820-1848.doi: 10.16420/j.issn.0513-353x.2025-0626

• Reviews • Previous Articles     Next Articles

Research Progress on Trichoderma in Controlling Soil-Borne Fungal Diseases of Chili Peppers

DU Xinqi1,2,*, ZHU Hongxia1,*, ZHAO Yaping1,2, HU Linfeng1,**(), FENG Di1,**()   

  1. 1 Institute of Agricultural Resources and EnvironmentXinjiang Academy of Agricultural Sciences, Urumchi 830091, China
    2 Department of Facility Agriculture Science and EngineeringWeifang University of Science and Technology,Weifang, Shandong 262700, China
  • Received:2025-10-26 Revised:2026-04-29 Online:2026-06-24 Published:2026-06-24
  • Contact: HU Linfeng, FENG Di

Abstract:

As a globally important economic crop,chili peppers are severely threatened by soil-borne fungal diseases such as Fusarium wilt,Phytophthora blight,anthracnose,and root rot. Traditional chemical control not only induces resistance in pathogenic fungi but also causes environmental pollution,biological control technology to become an important development direction in the field of plant protection. Fungi of the genus Trichoderma,as efficient biocontrol microorganisms,have been fully proven to possess great biocontrol potential. This paper systematically reviews the classification,biocontrol efficacy,mechanisms of action,and research and development progress of Trichoderma-based formulations,and summarizes its mechanisms in controlling soil-borne fungal diseases of chili pepper,mainly including:1) Hyperparasitism(recognizing pathogen signals and secreting degrading enzymes such as chitinase and glucanase to destroy mycelial structures);2)Competitive action(occupying ecological niches relying on rapid colonization ability);3)Antibiosis(producing secondary metabolites such as 6-PP and gliotoxin to inhibit pathogen growth);4)Induced systemic resistance(activating plant jasmonic acid and salicylic acid signaling pathways to enhance the activity of defense enzymes);5)Synergistic antagonism(combining with beneficial bacteria and fungi to inhibit pathogens and improve soil microecology);6)Growth-promoting effect(secreting plant hormones such as auxin and gibberellin to improve nutrient utilization efficiency). Future research should further explore the interaction mechanisms among Trichoderma,plants,and pathogens,optimize the preparation process and application strategies of microbial agents,so as to promote the large-scale and efficient application of Trichoderma in the green prevention and control of chili pepper diseases.

Key words: chili pepper, fungal soil-borne diseases, Trichoderma, biological control, microbial agent development, mechanism of action