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  11. Three New Melanogaster Species (boletales, Paxillaceae) From Southwestern China Based On Morphological And Molecular Evidence.
  1. Home
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  11. Three New Melanogaster Species (boletales, Paxillaceae) From Southwestern China Based On Morphological And Molecular Evidence.

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Three new Melanogaster species (Boletales, Paxillaceae) from southwestern China based on morphological and molecular evidence.

Tian-Jun Yuan1,2, Hong-Mei Luo2, Kai-Mei Su2

  • 1School of Science, Mae Fah Luang University, Chiang Rai 57100, Thailand Mae Fah Luang University Chiang Rai Thailand.

Mycokeys
|August 5, 2024

View abstract on PubMed

Summary
This summary is machine-generated.

Three new fungal species, Melanogaster cyaneus, M. diqingensis, and M. truncatisporus, were identified in China using morphological and molecular data. Phylogenetic analysis confirms their distinctness, suggesting a revision of current infrageneric classifications.

Keywords:
False trufflesgasteroid Boletalesphylogenytaxonomy

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Area of Science:

  • Mycology
  • Biodiversity
  • Taxonomy

Background:

  • The genus Melanogaster is known for its ectomycorrhizal fungi.
  • Accurate species identification and classification are crucial for understanding fungal diversity and ecological roles.

Purpose of the Study:

  • To describe and formally introduce three new Melanogaster species discovered in China.
  • To clarify the phylogenetic relationships of these new species within the Melanogaster genus.
  • To evaluate the existing infrageneric classification of Melanogaster based on new findings.

Main Methods:

  • Morphological characterization of fungal specimens.
  • Molecular phylogenetic analyses using multiple gene markers (nrITS, nrLSU, rpb2).
  • Comparative analysis of genetic data and morphological traits.
three new species

Main Results:

  • Three new species, Melanogaster cyaneus, M. diqingensis, and M. truncatisporus, are described and illustrated.
  • Phylogenetic analyses, particularly using nrITS data, robustly support the distinctness of these three species.
  • Genetic similarity below 93.2% further supports their status as separate species.
  • Morphological distinctions include variations in gleba color, peridium color, and basidiospore size and shape.
  • Orthogonal partial least squares discriminant (OPLS-DA) analysis suggested placement within existing sections, but these sections were found to be non-monophyletic.

Conclusions:

  • The three newly discovered species are morphologically and genetically distinct members of the Melanogaster genus.
  • The current infrageneric classification system for Melanogaster, based on morphological characteristics, is not supported by phylogenetic data and should be abandoned.
  • Further research is needed to establish a robust phylogenetic classification for the genus Melanogaster.