Abstract
Ganoderma sichuanense is a prominent medicinal fungus extensively cultivated across China. In 2022, symptoms of yellow rot were observed on the fruiting bodies of G. sichuanense in a mushroom farm located in Panshi City, Jilin Province, China. We isolated and purified a pathogenic fungus, identified as Xylogone ganodermophthora through morphological characteristics and multigene phylogenetic analysis. Pathogenicity of X. ganodermophthora was confirmed through inoculation of G. sichuanense fruiting bodies. This represents the first report of X. ganodermophthora causing yellow rot disease in G. sichuanense. Fungicide sensitivity tests were conducted using a mycelial growth assay, revealing high sensitivity of X. ganodermophthora to Carbendazim, Chlorothalonil, Fludioxonil, Prochloraz, and Prochlorza-Mn, with EC50 values ranging from 0.003 to 0.046 μg mL−1. These findings offer valuable insights into the effective management of yellow rot of G. sichuanense.
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