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Mycological Progress

, Volume 16, Issue 5, pp 495–505 | Cite as

Taxonomic revisions in the Microstromatales: two new yeast species, two new genera, and validation of Jaminaea and two Sympodiomycopsis species

Original Article

Abstract

Environmental sampling yielded two yeast species belonging to Microstromatales (Exobasidiomycetes, Ustilaginomycotina). The first species was collected from a leaf phylloplane infected by the rust fungus Coleosporium plumeriae, and represents a new species in the genus Jaminaea, for which the name Jaminaea rosea sp. nov. is proposed. The second species was isolated from air on 50% glucose media and is most similar to Microstroma phylloplanum. However, our phylogenetic analyses reveal that species currently placed in Microstroma are not monophyletic, and M. phylloplanum, M. juglandis and M. albiziae are not related to the type species of this genus, M. album. Thus, Pseudomicrostroma gen. nov. is proposed to accommodate the following species: P. glucosiphilum sp. nov., P. phylloplanum comb. nov. and P. juglandis comb. nov. We also propose Parajaminaea gen. nov. to accommodate P. albizii comb. nov. and P. phylloscopi sp. nov. based on phylogenetic analyses that show these are not congeneric with Jaminaea or Microstroma. In addition, we validate the genus Jaminaea, its respective species and two species of Sympodiomycopsis and provide a new combination, Microstroma bacarum comb. nov., for the anamorphic yeast Rhodotorula bacarum. Our results illustrate non-monophyly of Quambalariaceae and Microstromataceae as currently circumscribed. Taxonomy of Microstroma and the Microstromataceae is reviewed and discussed. Finally, analyses of all available small subunit rDNA sequences for Jaminaea species show that J. angkorensis is the only known species that possess a group I intron in this locus, once considered a potential feature indicating the basal placement of this genus in Microstromatales.

Keyword

Basidiomycetous yeast Exobasidiomycetes Smut fungi rDNA sequences Taxonomic validation 

Notes

Acknowledgements

We thank the Plant and Pest Diagnostic Laboratory (PPDL) for microscopy and microplate facilities. Travel to Germany and Florida were facilitated by a travel grant from the International Mycological Congress and funding from CAPES to MCA, and we are grateful to M.R.A. DiBiasi and M. Dal Pan for providing lodging and gardens with interesting fungi. TK’s study at Purdue University is funded by an Anadamahidol scholarship from Thailand. We acknowledge Dr. Mehrdad Abbasi, all reviewers and editors for critical suggestions on systematic and nomenclatural issues. Finally, we would like to thank for all members of the Aime laboratory for help in culture maintenance and molecular laboratory support, as well as constructive comments on the previous versions of the manuscript.

Supplementary material

11557_2017_1276_MOESM1_ESM.docx (609 kb)
ESM 1 (DOCX 609 kb)

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Copyright information

© German Mycological Society and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  1. 1.Department of Botany and Plant PathologyPurdue UniversityWest LafayetteUSA

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