MYCOLab Ai Logo - gold and army green

Morpho-molecular analyses reveal two novel species and two new records of Dictyosporiaceae (Pleosporales) from Dulongjiang River in northwestern Yunnan Province, China

Summary

Scientists discovered and identified four new or newly recorded fungal species from a river in China’s Yunnan Province. These fungi, belonging to the Dictyosporiaceae family, were found growing on submerged wood in the Dulongjiang River. By combining detailed microscopic observation with genetic analysis, researchers confirmed two completely new species and two species not previously recorded in this region, expanding our understanding of freshwater fungal diversity.

Background

Yunnan Province is rich in freshwater resources providing favorable environments for freshwater fungi. Dictyosporiaceae comprises lignicolous freshwater fungi that are key decomposers in freshwater ecosystems. Recent studies have shown increasing diversity of freshwater fungi globally, particularly in China.

Objective

To identify and describe lignicolous freshwater fungi from the Dulongjiang River through morphological and molecular phylogenetic analysis. To introduce new species and records of Dictyosporiaceae collected from submerged wood in northwestern Yunnan Province.

Results

Six fresh isolates of Dictyosporiaceae were obtained, identified as five species including two new species (Dictyocheirospora splendida and Jalapriya guttulata), two new records for the region (D. nabanheensis and Dictyosporium hughesii), and one known species (Dictyosporium duliujiangense). Phylogenetic analysis resolved these taxa within three genera.

Conclusion

This study expands knowledge of Dictyosporiaceae diversity in freshwater habitats of Yunnan Province. The findings demonstrate the importance of combining morphological and molecular data for accurate species identification. The Dulongjiang River basin continues to reveal significant fungal diversity.
  • Published in:MycoKeys,
  • Study Type:Taxonomic Description Study,
  • Source: 10.3897/mycokeys.117.145587; PMID: 40351352
Scroll to Top