Different Symbiotic Species of Armillaria Affect the Yield and Active Compound Contents of Polyporus Umbellatus

This study examined the effects of three Armillaria strains (A35, A541, and A19) on the yield and active compound contents of Polyporus umbellatus over four years. The strain A541 (A. gallica) resulted in the highest yield (1221 g·nest−1) and polysaccharide content, indicating its potential for enhancing P. umbellatus cultivation. The research found significant differences in the production of ergosterol, polyporusterone A, and polyporusterone B, with A19 showing the highest levels of polyporusterones. The study underscores the importance of selecting the appropriate Armillaria species to optimize the production and quality of P. umbellatus, with implications for traditional Chinese medicine.