Abstract
The overuse of synthetic pesticides has raised concerns about environmental and health risks, prompting interest in eco-friendly alternatives. In this study, we evaluated the biocontrol efficacy of Bacillus subtilis mutant 320 (BSM320) cultured in an extract of composted Lentinula edodes spent mushroom substrate (LeCSMS), termed LeG320. LeG320 showed strong antifungal activity against major soil-borne pathogens and effectively suppressed powdery mildew (Sphaerotheca fusca) in cucumber. It outperformed uncultured LeCSMS and LB-grown BSM320 in both in vitro and in planta assays. Gene expression analysis indicated that LeG320 activated salicylic acid and jasmonic acid signalling pathways by upregulating PR1, PR3, Lox1, Lox23, LecRK6.1 and WRKY20. Additionally, LeG320 enhanced seedling growth without affecting germination. These findings suggest LeG320 is a growth-compatible, disease-suppressive agent that supports sustainable agriculture through the valorization of mushroom waste.
| Original language | English |
|---|---|
| Article number | e70302 |
| Journal | Journal of Phytopathology |
| Volume | 174 |
| Issue number | 2 |
| DOIs | |
| State | Published - 2026.03.1 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 2 Zero Hunger -
SDG 3 Good Health and Well-being -
SDG 8 Decent Work and Economic Growth -
SDG 12 Responsible Consumption and Production
Keywords
- antifungal
- biocontrol agent
- BSM320
- composted spent mushroom substrate
- powdery mildew
Quacquarelli Symonds(QS) Subject Topics
- Agriculture & Forestry
- Anatomy & Physiology
- Biological Sciences
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