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The mitochondrial genome of a wild edible mushroom, Russula rosea

Summary

Scientists sequenced the complete genetic instructions contained in the energy centers (mitochondria) of Russula rosea, a wild edible mushroom known for its antioxidant and anti-tumor properties. The mushroom’s mitochondrial genome contains 57 genes and is about 54,177 DNA base pairs long. By comparing this genetic information with other fungi, researchers found that Russula rosea is closely related to another mushroom species called Russula lepida. This discovery helps scientists better understand how edible mushrooms are related to each other evolutionarily.

Background

Russula rosea is a common wild edible ectomycorrhizal fungus widely distributed globally with known antioxidant and anti-tumor properties. Mitochondrial genomes play crucial roles in cell energy metabolism and have contributed to understanding system evolution and population genetics. However, the mitochondrial genome of R. rosea had not been previously described.

Objective

This study aimed to sequence and annotate the complete mitochondrial genome of Russula rosea to provide a theoretical basis for understanding phylogenetic relationships and genetic evolution of edible fungi.

Results

The complete mitochondrial genome of R. rosea is 54,177 bp with 22.34% GC content, containing 57 genes including 14 protein-coding genes, one rps3 gene, two rRNA genes, 24 tRNA genes, 15 ORFs, and one dpo gene. Nine introns were identified across five genes (cob, cox1, cox2, nad1, nad5). Phylogenetic analysis revealed a close evolutionary relationship between Russula rosea and Russula lepida.

Conclusion

The assembled and annotated mitochondrial genome of R. rosea provides valuable data for studying genetic evolution of edible fungi. The close phylogenetic relationship with R. lepida helps clarify the evolutionary relationships within the Russula genus and contributes to understanding edible fungal evolution.
  • Published in:Mitochondrial DNA B Resources,
  • Study Type:Genomic Analysis,
  • Source: 10.1080/23802359.2022.2067502 / PMID: 35756434
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