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The genus Heimioporus in China
Nian-Kai Zeng1,2, Hui Chai1, Zhi-Qun Liang3
1a Transgenic Laboratory, College of Pharmacy, Hainan Medical University , Haikou 571199 , China.
Mycologia
|October 26, 2018
Summary
This study identifies three species of Heimioporus mushrooms in China, including two new species, H. conicus and H. gaojiaocong. Molecular and morphological analyses clarify the taxonomy and biogeography of this fungal genus.
Area of Science:
- Mycology
- Fungal Taxonomy
- Molecular Phylogenetics
Background:
- The fungal genus Heimioporus (Boletaceae, Boletales) is known to have species in China.
- Previous taxonomic understanding of Heimioporus in China requires clarification.
Purpose of the Study:
- To investigate and clarify the species diversity of Heimioporus in China.
- To establish the taxonomic status of Heimioporus species found in China.
- To provide a key for identifying Chinese Heimioporus taxa.
Main Methods:
- Morphological examination of fungal specimens.
- Molecular phylogenetic analyses using DNA sequences from ITS (ITS1-5.8S-ITS2), 28S rDNA (D1-D2 domains), and TEF1 gene.
- Comparative analysis with existing taxonomic descriptions and molecular data.
Main Results:
- Three species of Heimioporus are recognized in China: H. conicus sp. nov., H. gaojiaocong sp. nov., and H. japonicus.
- Heimioporus xerampelinus is synonymized with H. japonicus.
- Specimens previously identified as H. retisporus and H. subretisporus are reclassified as H. japonicus and H. gaojiaocong, respectively.
- A preliminary biogeographical analysis indicates close relationships between Heimioporus in East Asia and Southeast Asia/Australia.
- Heimioporus japonicus is a widespread species across East and Southeast Asia, with no shared taxa found between East Asia and Australia.
Conclusions:
- The study establishes a clear taxonomic framework for Heimioporus species in China.
- Molecular and morphological data support the recognition of two new species and the synonymization of existing ones.
- The findings contribute to understanding the biogeography of the genus Heimioporus in Asia and surrounding regions.
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