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Phylogenetic diversity of Colletotrichum species (Sordariomycetes, Glomerellales, Glomerellaceae) associated with plant diseases in Thailand

Summary

Researchers identified eight species of Colletotrichum fungi causing plant diseases in Thailand. They discovered two completely new species and found these fungi on 13 additional plant hosts previously unknown. Using DNA analysis, they confirmed the identity of each fungal species and documented their characteristics. This work helps farmers and scientists better identify and manage these damaging plant pathogens.

Background

Colletotrichum is a cosmopolitan fungal genus comprising important plant pathogens, endophytes, and saprobes. The genus contains numerous species complexes with many cryptic species that are morphologically similar but phylogenetically distinct. Little is known about Colletotrichum diversity in Thailand despite the agricultural importance of these fungi.

Objective

To identify and characterize Colletotrichum species associated with plant diseases in Thailand through morphological examination and multigene phylogenetic analysis. To propose novel species and establish new host records for existing species.

Results

Twenty Colletotrichum isolates representing eight species were obtained. Two new species were proposed: C. dendrobii and C. musichiangmaiense. Thirteen new host records were established for six species. The sexual morph of C. endophyticum was reported for the first time.

Conclusion

This study enhances understanding of plant pathogenic Colletotrichum species in Thailand through accurate fungal diagnostics. The findings improve knowledge of plant-fungal interactions, biodiversity, and support sustainable agriculture by providing accurate identification methods for crop pathogens.
  • Published in:MycoKeys,
  • Study Type:Taxonomic Study,
  • Source: 10.3897/mycokeys.119.152323, PMID: 40656897
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