ORIGINAL RESEARCH article
Front. Microbiol.
Sec. Food Microbiology
Volume 16 - 2025 | doi: 10.3389/fmicb.2025.1545248
This article is part of the Research TopicApplication of Novel Technologies for the Inactivation and Reduction of Fungi and MycotoxinsView all 8 articles
Xylitol promotes the antioxidant and biocontrol efficiency of the antagonistic yeast, Meyerozyma guilliermondii
Provisionally accepted
- 1Institute of Soil Science, Chinese Academy of Sciences (CAS), Nanjing, China
- 2University of Chinese Academy of Sciences, Beijing, Beijing, China
- 3Hunan University of Finance and Economics, Changsha, Hunan, China
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The biocontrol efficiency of the antagonist yeast Meyerozyma guilliermondii is significantly reduced under oxidative stress in adverse environments. However, effective strategies to improve M. guilliermondii under such abiotic stress remain limited. As an effective protectant of yeasts, xylitol has a significant potential to improve the performance of M. guilliermondii under abiotic stress. We investigated xylitol's effectson the viability and efficiency of M. guilliermondii under oxidative stress. The results showed that 0.5 M and 1 M xylitol significantly enhanced yeast survival, antioxidant gene expression, and enzyme activity, including thioredoxin reductase (TrxR) and peroxidase (POD), while reducing intracellular reactive oxygen species levels as well as damage to mitochondrial membranes, and preserving the ATP content. Notably, xylitol-treated (XT) yeast exhibited higher intracellular xylitol levels and improved resistance to oxidative stress compared with the non-xylitol-treated cells.Additionally, XT yeast showed a greater biocontrol efficacy and lower postharvest fungal infection rate by gray mold and blue mold in apples. These results demonstrated that xylitol effectively boosts the resilience and biocontrol efficiency of M. guilliermondii, making it a promising candidate to improve postharvest disease management.
Keywords: Meyerozyma guilliermondii, Biocontrol efficiency, Xylitol, antagonist, Gray mold
Received: 14 Dec 2024; Accepted: 25 Apr 2025.
Copyright: © 2025 Zhang, Zhuang and Gao. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Shunyao Zhuang, Institute of Soil Science, Chinese Academy of Sciences (CAS), Nanjing, China
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