December 5, 2025Plant Signaling & BehaviorOpen Access

Yeast to the rescue: Meyerozyma guilliermondii primes tomato vigor and resistance to Fusarium crown and root rot

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Tomato growth was enhanced by yeast treatment, with notable improvements in chlorophyll content and stress response.
Hydrogen peroxide accumulation and upregulation of chitinase and peroxidase indicate a robust defense mechanism activation.
Observational analysis of treated versus untreated tomato plants under infection pressure from Fusarium oxysporum reveals significant differences in defense responses.
Findings support the potential use of Meyerozyma guilliermondii as a biocontrol agent, highlighting its role in enhancing plant vigor and disease resistance.

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Experimental treatments improved growth and reduced Fusarium crown rot in tomatoes, suggesting beneficial biocontrol effects from yeast.

Karmous et al. (2025) studied this question.

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