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Pucciniomycotina includes some of the least characterized lineages of Fungi.  Currently comprised of nine classes, including Puccionomycetes which contains the rust fungal order among others, these fungi are believed to be globally distributed although life histories, ecology, and biology remain a mystery for members of most of these classes.  Our work in this area includes the discovery and description of new taxa as well as improved systematic understanding of the group as a whole, and in pioneering efforts to capture genomic data for at least one member of each major lineage through collaboration with the DOE's Joint Genome Institute.

Mixia osmundae: represents a monotypic lineage of Pucciniomycotina and the smallest known genome for a basidiomycete phytopathogen.

Meredithblackwellia eburnea: new genus discovered on a fern leaf in Guyana & named in honor of Dr. Meredith Blackwell. The pattern of budding in rosettes is unusual and characteristic.

Tritirachium: once believed to be an ascomyceteous "mold", now known to form a class-level lineage in Pucciniomycotina, described in 2011.

Pycnopulvinus aurantiacus: new genus discovered on palm trash, and representing a new lineage of Microbotryomyetes described in 2014.

 Select Publications


  • Aime MC, Castlebury L, Abbasi M, Begerow D, Berndt R, Kirschner R, Maravanová L, Ono Y, Padamsee M, Scholler M, Thines M, Rossman AY. 2018. Recommendations of generic names competing for use: Pucciniomycotina and Ustilaginomycotina, Basidiomycota. IMA Fungus 9: 75–90. doi: 10.5598/imafungus.2018.09.01.06

  • Aime MC, Toome M, McLaughlin D. 2014. The Pucciniomycotina.  PP: 271–294. In: The Mycota VII Part A. Systematics and Evolution. 2nd Ed. McLaughlin D, Spatafora JW (Eds), Springer-Verlag.

  • Aime MC, Matheny PB, Henk DA, Frieders EM, Nilsson RH, Piepenbring M, McLaughlin DJ, Szabo LJ, Begerow D, Sampaio JP, Bauer R, Weiss M, Oberwinkler F, Hibbett DS. 2006. An overview of the higher-level classification of Pucciniomycotina based on combined analyses of nuclear large and small subunit rDNA sequences. Mycologia 98:896–905. doi: 10.3852/mycologia.98.6.896

  • Aime MC, Urbina H, Liber JA, Bonito G, Oono R. 2018. Two new endophytic species in Atractiellomycetes, Atractidochium hillariae and Proceropycnis hameedii. Mycologia 110: 136–146. 10.1080/00275514.2018.1446650

  • Bonito G, Hameed K, Toome-Heller M, Healy R, Reid C, Liao HL, Aime MC, Schadt C, Vilgalys R. 2017. Atractiella rhizophila, sp. nov., an endorrhizal fungus isolated from the Populus microbiome.  Mycologia 109:18–26. doi: 10.1080/00275514.2016.1271689

  • Camiolo S, Toome-Heller M, Aime MC, Haridas S, Grigoriev IV, Porceddu A, Mannazzu I. 2018. An analysis of codon bias in six red yeast species. Yeast: in press. doi: 10.1002/yea.3359

  • Haelewaters D, Toome-Heller M, Albu S, Aime MC. 2019. Red yeasts from leaf surfaces and other habitats: three new species and a new combination of Symmetrospora (Pucciniomycotina, Cystobasidiomycetes). Fungal Systematics and Evolution 5:187–196. doi: 10.3114/fuse.2020.05.12

  • McLaughlin DJ, Kumar TKA, Padamsee M, Toome-Heller M, Frieders EM, Aime MC. 2017. Structural character evolution in Pucciniomycotina: mitosis, septa and hyphal branch initiation in two Helicogloea species. Mycologia 109:162–181. doi: 10.1080/00275514.2017.1282239

  • Parra PP, Aime MC. 2019. New species of Bannoa described from the tropics and the first report of the genus in South America. Mycologia 111:953964. doi: 10.1080/00275514.2019.1647397

  • Schell WA, Lee AG, Aime MC. 2011. A new lineage in Pucciniomycotina: class Tritirachiomycetes, order Tritirachiales, family Tritirachiaceae. Mycologia 103:1331–1340. doi: 10.3852/10-333

  • Spribille T, Tuovinen V, Resl P, Vanderpool D, Wolinski H, Aime MC, Schneider K, Stabentheiner E, Toome-Heller M, Thor G, Mayrhofer H, Johannesson H, McCutcheon JP. 2016. Basidiomycete yeasts in the cortex of ascomycete macrolichens. Science 353: 488–492.  doi: 10.1126/science.aaf8287 

  • Toome M, Aime MC. 2014. Pycnopulvinus aurantiacus gen. et sp. nov.—a new member of Pucciniomycotina from Ecuador.  Mycokeys 8:43-50. doi: 10.3897/mycokeys.8.7676

  • Toome NM, Ohm RA,  Riley RW, James TY, Lazarus KL, Henrissant B, Albu S, Boyd A, Chow J, Clum A, Heller G, Lipzen A, Nolan M, Sandor L, Zvenigorodsky N, Grigoriev IV, Spatafora JW, Aime MC.  2014. Genome sequencing provides insight into the reproductive biology, nutritional mode, and ploidy of the fern pathogen Mixia osmundae. New Phytologist 202:554–564. doi: 10.1111/nph.12653

  • Toome M, Roberson R, Aime MC. 2013. Meredithblackwellia eburnea gen. et sp. nov., Kriegeriaceae fam. nov. and Kriegeriales ord. nov—toward resolving higher-level classification in Microbotryomycetes.  Mycologia 105:486–495. doi: 10.3852/12-251

  • Urbina H, Aime MC. 2018. A closer look at Sporidiobolales: Ubiquitous microbial community members of plant and food biospheres. Mycologia 110:79–92. doi: 10.1080/00275514.2018.1438020

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