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<p><i>Myochromella mammosa</i>, a novel species from southwestern China, is distinguished by its small, solitary or gregarious basidiomata. The pileus is clock-shaped, with distinct central mastoids, edge stripes, and a darker center that flattens upon maturation. The stipe is white, firm when young, and becomes hollow and slightly thickened at the base with age. We conducted a comprehensive analysis of publicly available ITS sequences from NCBI-GenBank and fungal amplicon sequencing data from NCBI-SRA to explore the global distribution and enumeration of recorded species of <i>Myochromella</i>. At a 98% sequence similarity threshold, eleven species were identified, including eight without formal designations. <i>Myochromella</i>’s diversity is primarily Northern Hemisphere-centric and tends toward endemic distribution. Leveraging amplicon sequencing data sets enables precise species diversity assessments, enhancing field collection efficiency and providing novel insights into macrofungal species diversity.</p>

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Myochromella unveiled: exploring its global distribution through a public database of amplicons

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年5月24日

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  • Shuwei Wei,
  • Bao Qi,
  • Xiaozhuo Zhang,
  • Hui Zhang,
  • Dongfang Shi,
  • Qi Wang,
  • Yu Li,
  • Zhanwu Peng

摘要

Myochromella mammosa, a novel species from southwestern China, is distinguished by its small, solitary or gregarious basidiomata. The pileus is clock-shaped, with distinct central mastoids, edge stripes, and a darker center that flattens upon maturation. The stipe is white, firm when young, and becomes hollow and slightly thickened at the base with age. We conducted a comprehensive analysis of publicly available ITS sequences from NCBI-GenBank and fungal amplicon sequencing data from NCBI-SRA to explore the global distribution and enumeration of recorded species of Myochromella. At a 98% sequence similarity threshold, eleven species were identified, including eight without formal designations. Myochromella’s diversity is primarily Northern Hemisphere-centric and tends toward endemic distribution. Leveraging amplicon sequencing data sets enables precise species diversity assessments, enhancing field collection efficiency and providing novel insights into macrofungal species diversity.