Insights into microbiome-triterpenoid correlation in Poria cocos via comparative analysis of sclerotial and soil microenvironments
- Author: mycolabadmin
- 9/17/2025
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Summary
Researchers discovered that the medicinal fungus Poria cocos creates its own specialized microbial environment in its underground structure that is closely linked to the production of pachymic acid, a compound with anti-cancer and immune-boosting properties. By comparing the microbes living in the fungus versus surrounding soil, they found specific beneficial bacteria and fungi that thrive in the fungus but are rare in soil. This discovery could help improve cultivation techniques to produce higher quality medicinal fungi with more therapeutic compounds.
Background
Poria cocos is a medicinal fungus with over 2000 years of therapeutic use, renowned for its diuretic, sedative, and immunomodulatory properties. Pachymic acid is a principal bioactive component with antitumor, anti-inflammatory, and immunoregulatory effects. The relationship between its specialized microbiota and pachymic acid accumulation remains poorly understood.
Objective
This study systematically compared the microbial communities and pachymic acid distribution patterns between Poria cocos sclerotia and different soil microenvironments to understand the correlation between specialized microbiota and key metabolite accumulation.
Results
Poria cocos showed significantly lower microbial diversity compared to surrounding soil, with dominance of Proteobacteria and Ascomycota. Burkholderia-Caballeronia-Paraburkholderia and Scytalidium were significantly enriched and positively correlated with pachymic acid. Pachymic acid accumulated predominantly within sclerotia with trace amounts in adjacent soil.
Conclusion
Poria cocos establishes a unique microecosystem by enriching specific microbial taxa closely associated with pachymic acid accumulation. The findings suggest host secondary metabolites play a crucial role in microbial community selection and provide insights for cultivation optimization to improve medicinal quality.
- Published in:Frontiers in Microbiology,
- Study Type:Comparative Analysis Study,
- Source: PMID: 41040874, DOI: 10.3389/fmicb.2025.1674216