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Complete mitochondrial genome of the edible Basidiomycete fungus Hypsizygus marmoreus

Summary

Scientists have decoded the complete mitochondrial DNA sequence of Hypsizygus marmoreus, an edible mushroom popular in East Asian cuisine. This genetic information helps us better understand the evolution and relationships between different mushroom species, and provides tools for identifying and preserving different strains of this nutritious food source. Impacts on everyday life: • Helps ensure the quality and authenticity of commercial mushroom products • Supports the development of improved mushroom varieties for food production • Contributes to the preservation of mushroom genetic resources • Advances our understanding of the evolution and diversity of edible mushrooms

Background

Hypsizygus marmoreus is a commercial edible mushroom popular in East Asian regions due to its high nutritional and medicinal value. Previous studies have isolated various bioactive compounds from this fungus, but there was insufficient genetic information for strain identification and discrimination.

Objective

To sequence and characterize the complete mitochondrial genome of Hypsizygus marmoreus to provide important genetic information for phylogeny, strain conservation, and identification studies.

Results

The complete mitochondrial DNA is 106,417 bp in length with a GC content of 31.74%, making it the fourth largest mitogenome in Agaricales. The circular mitogenome encoded 67 protein-coding genes and one ribosomal RNA. It contains 13 conserved protein-coding genes including NAD dehydrogenase subunits, cytochrome oxidases, apocytochrome b, and ATP synthases. The genome includes 22 tRNA genes covering 19 standard amino acids.

Conclusion

The mitochondrial genome sequence of H. marmoreus provides new insights into understanding the phylogeny and evolution of Lyophyllaceae and Agaricales. Phylogenetic analysis confirmed that H. marmoreus clusters with Tricholoma matsutake, supporting its placement in the Tricholomatoid clade.
  • Published in:Mitochondrial DNA Part B,
  • Study Type:Genomic Analysis,
  • Source: 10.1080/23802359.2018.1532343
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