Genetic Mechanism of Cap Color in Oyster Mushrooms

Researchers at Shandong Agricultural University have shed light on the genetic mechanism behind the cap color of oyster mushrooms, a crucial commercial trait in their cultivation. Their study, published in Applied and Environmental Microbiology, identifies a key candidate gene, pcmfs, involved in melanin transport in edible fungi. This breakthrough has significant implications for targeted molecular breeding of cap color variants, enhancing market appeal and consumer satisfaction. The researchers also clarified the expression pattern and functional role of pcmfs in cap color formation, providing new insights into the genetic basis of this trait.

Key Takeaways:

• Researchers at Shandong Agricultural University have identified a candidate gene, pcmfs, for cap color in oyster mushrooms, which plays a crucial role in melanin transport.
• The pcmfs gene is localized to the cell membrane and has a significant positive effect on cap color formation, with high expression levels leading to dark cap color.
• The study is the first to report a gene involved in melanin transport in edible fungi, enhancing our understanding of the genetic mechanisms governing cap color formation in oyster mushrooms.
• The research has significant implications for targeted molecular breeding of cap color variants, potentially improving market appeal and consumer satisfaction.
• The study was partially funded by the National Natural Science Foundation of China and the Mushroom Technology System of Shandong Province.

Statistics:

• The study was conducted by researchers from Shandong Agricultural University, specifically Yan Zhang and colleagues.
• The study was published in Applied and Environmental Microbiology, a journal of the American Society for Microbiology.
• The research builds upon previous findings from the same research group, which identified a major QTL of cap color in oyster mushroom P. cornucopiae.
• The study highlights the importance of understanding the genetic basis of cap color in oyster mushrooms, as it has significant commercial and consumer implications.
• The publication of research findings is facilitated by public access platforms, such as the free version available at https://doi-org.sdpl.idm.oclc.org/10.1128/aem.01894-24.

Sources:

• NewsRx. Data on Applied and Environmental Microbiology Discussed by Researchers at Shandong Agricultural University (Identification and functional characterization of major gene pcmfs, controlling cap color formation in Pleurotus cornucopiae). Life Science Weekly. November 4, 2025; p 423.
• Applied and Environmental Microbiology (Journal). Identification and functional characterization of major gene pcmfs, controlling cap color formation in Pleurotus cornucopiae. 2025, 91(3).
• The publisher for Applied and Environmental Microbiology is American Society for Microbiology.