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Novel Collophorina and Coniochaeta species from Euphorbia polycaulis, an endemic plant in Iran

Abstract

During a study on the biodiversity of yeasts and yeast-like ascomycetes from wild plants in Iran, four strains of yeast-like filamentous fungi were isolated from a healthy plant of Euphorbia polycaulis in the Qom Province, Iran (IR. of). All four strains formed small hyaline one-celled conidia from integrated conidiogenous cells directly on hyphae and sometimes on discrete phialides, as well as by microcyclic conidiation. Two strains additionally produced conidia in conidiomata that open by rupture. The internal transcribed spacer (ITS) sequences suggested the placement of these strains in the genera Collophorina (Leotiomycetes) and Coniochaeta (Sordariomycetes), respectively. Blast search results on NCBI GenBank and phylogenetic analyses of ITS, the glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and the translation elongation factor 1α (EF-1α) sequences, and the nuclear large subunit ribosomal gene (LSU), partial actin (ACT), and β-tubulin (TUB) sequences, respectively, revealed the isolates to belong to three new species, that are described here as Collophorina euphorbiae, Coniochaeta iranica, and C. euphorbiae. All three species are characterised by morphological, physiological, and molecular data.

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Acknowledgements

The authors would like to thank Dr. Hamid Moazzeni of Department of Plant Biology of Iranian Biological Resource Center for identification of plant material.

Funding

We gratefully acknowledge the financial support from the Iranian Biological Resource Center (IBRC), ACECR, which was provided to us by Mohammad Ali Amoozegar (Head of Department).

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Nasr, S., Bien, S., Soudi, M.R. et al. Novel Collophorina and Coniochaeta species from Euphorbia polycaulis, an endemic plant in Iran. Mycol Progress 17, 755–771 (2018). https://doi.org/10.1007/s11557-018-1382-9

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Keywords

  • Lecythophora
  • Morphological characterisation
  • Multi-locus sequence analysis
  • Phylogeny
  • Systematics