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Strategy development for enhancing Trichoderma longibrachiatum biocontrol efficacy based on integrated functional
Haolin Yang1, Shuang Li1, Xiaojing Yang1
1State Key Laboratory of Microbial Technology, Institute of Microbial Technology, Shandong University, Qingdao 266237, PR China.
Bioresource Technology
|July 30, 2025
Summary
Beneficial microbes like Trichoderma enhance plant disease control but struggle with soil colonization. This study found that combining wheat straw with heat-killed Bacillus subtilis significantly boosted Trichoderma
Area of Science:
- Microbial Ecology
- Plant Pathology
- Biotechnology
Background:
- Biocontrol agents like Trichoderma offer eco-friendly plant disease management.
- Poor soil colonization and low secondary metabolite production limit Trichoderma efficacy.
- Agricultural waste valorization can enhance biocontrol strategies.
Purpose of the Study:
- To investigate strategies for improving Trichoderma longibrachiatum soil colonization and biocontrol potential.
- To explore the synergistic effects of agricultural waste and bacterial treatments on Trichoderma.
- To enhance secondary metabolite production for improved plant disease management.
Main Methods:
- Isolation and characterization of Trichoderma longibrachiatum Tr-8.
- Integrated omics analysis to understand Tr-8's metabolic pathways.
- Application of wheat straw and heat-killed Bacillus subtilis as combined treatment.
Main Results:
- Trichoderma longibrachiatum Tr-8 demonstrated strong cellulose degradation and resource competition.
- Combined treatment significantly increased secondary metabolite yield (1.5-fold) and tobacco bacterial wilt control (14.3%).
- Soil Trichoderma abundance increased by 1.2-fold, indicating enhanced colonization.
Conclusions:
- Wheat straw combined with heat-killed Bacillus subtilis effectively enhances Trichoderma colonization and biocontrol efficacy.
- This integrated approach offers a sustainable method for managing soil-borne pathogens.
- The findings provide novel strategies for agricultural waste valorization and microbial-based disease control.
