Summary
Mitochondrial DNAs were isolated from four cultivated strains of the commercial two-spored mushroom Agaricus brunnescens (bisporus) and from ten isolates of the four spored mushroom Agaricus bitorquis. Digestion of the fungal mitochondrial DNA with restriction endonucleases yielded numerous fragments. Summation of the fragment sizes gave a mitochondrial DNA size of 98.3 ± 2.4 kilobases (kb) (64.9 x 106 daltons) for A. brunnescens. The size of the mitochondrial DNA ranged from 148.5 ± 10.8 kb (98.0 x 106 daltons) to 176.3 ± 12.0 kb (116.4 x 106 daltons) for A. bitorquis. The restriction patterns, produced by a variety of endonucleases, were identical for all four isolates of A. brunnescens. The ten isolates of A. bitorquis demonstrated extensive restriction pattern heterogeneity and have been tentatively assigned into four groups. Approximately 60% of the A. bitorquis mitochondrial DNA restriction fragments show sequence homology with A. brunnescens mitochondrial DNA based on DNA — DNA hybridizations.
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Hintz, W.E., Mohan, M., Anderson, J.B. et al. The mitochondrial DNAs of Agaricus: heterogeneity in A. bitorquis and homogeneity in A. brunnescens . Curr Genet 9, 127–132 (1985). https://doi.org/10.1007/BF00436960
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DOI: https://doi.org/10.1007/BF00436960