<p>Dried and fresh morels (<i>Morchella</i> spp.) obtained from online vendors and local grocery stores in Washington State (WA), USA, were analyzed to determine the species sold commercially in the state. After morphological grouping, their partial genomic DNA sequences of the translation elongation factor 1-α (<i>EF1-α</i>) and the RNA polymerase II subunit 1 (<i>RPB1</i>) were used for maximum likelihood (ML) and Bayesian inference phylogenetic analyses. Five phylogenetic species were identified among 50 morphological groups (MGs) collected from two local grocery stores and four online vendors. All five morel species belong to the Elata clade. Four of them, <i>M. eximia, M. exuberans, M. sextelata,</i> and <i>M. tomentosa</i>, are post-fire black morels (“burn morels”), while the fifth species, <i>M. brunnea</i>, is not associated with fire. Our survey findings suggest that commercially sold morels in WA are predominantly burn morels collected from post-fire sites, with a diverse array of species available in the market. Continued monitoring of commercial morel supply and adoption of molecular identification practices will facilitate sustainable management of this valuable mushroom resource.</p>

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Identity of fresh and dried Morchella species sold commercially in Washington State, USA

  • Qing Bai,
  • Hao Peng,
  • Ying Zhai

摘要

Dried and fresh morels (Morchella spp.) obtained from online vendors and local grocery stores in Washington State (WA), USA, were analyzed to determine the species sold commercially in the state. After morphological grouping, their partial genomic DNA sequences of the translation elongation factor 1-α (EF1-α) and the RNA polymerase II subunit 1 (RPB1) were used for maximum likelihood (ML) and Bayesian inference phylogenetic analyses. Five phylogenetic species were identified among 50 morphological groups (MGs) collected from two local grocery stores and four online vendors. All five morel species belong to the Elata clade. Four of them, M. eximia, M. exuberans, M. sextelata, and M. tomentosa, are post-fire black morels (“burn morels”), while the fifth species, M. brunnea, is not associated with fire. Our survey findings suggest that commercially sold morels in WA are predominantly burn morels collected from post-fire sites, with a diverse array of species available in the market. Continued monitoring of commercial morel supply and adoption of molecular identification practices will facilitate sustainable management of this valuable mushroom resource.