Contact
rabernsimmons@ufl.eduResearch Summary
I am interested in research addressing the molecular systematics of the Kingdom Fungi, specifically that of various insect-associated and entomopathogenic (Ascomycota) or chytrid (Chytridiomycota) fungal lineages. I isolate pure cultures of fungi, which I use to construct molecular phylogenies of species, examine ultrastructural features by transmission electron microscopy, and observe developmental morphology of thalli by light microscopy. With these data, I have revised taxonomic groups to reflect a more natural phylogenetic history than classical taxonomic systems, which relied on morphology of thalli on natural substrates as detected by light microscopy. I describe new taxa with modern phylogenetic tools to promote universal taxon concepts.Current projects
- Systematics of fungi associated with wood boring beetles
Short Bio & Education
- 2014-present: School of Forest Resources and Conservation, University of Florida; Postdoctoral Research Associate.
- 2013-2014: School of Biology & Ecology, University of Maine; Postdoctoral Fellow & Program Director
- 2012-2013: School of Biology & Ecology, University of Maine; Postdoctoral Research Associate
- 2012: Ph.D. in Biological Sciences, University of Maine with Dr. Joyce E. Longcore
- 2007: M.S. in Botany and Plant Pathology, University of Maine, with Dr. Joyce E. Longcore
- 2004: B.S. in Natural Sciences University of Virginia’s College at Wise.
Publications
Simmons DR, De Beer ZW, Huang Y-T, Bateman C, Campbell AS, Dreaden TJ, Li Y, Ploetz RC, Black AW, Li H-F, Chen C-Y, Wingfield MJ, Hulcr J. 2016. New Raffaelea species (Ophiostomatales) from the United States and Taiwan associated with ambrosia beetles and plant hosts. IMA Fungus: Revisions submitted.
Bateman C, Huang Y-T, Simmons DR, Kasson MT, Stanley EL, Hulcr J. 2016. Ambrosia beetle Premnobius cavipennis (Scolytinae: Ipini) carries highly divergent ascomycotan ambrosia fungus, Afroraffaelea ambrosiae gen. et sp. nov. (Ophiostomatales: Ophiostomataceae). Fungal Ecology: Revisions submitted.
Simmons DR, Li Y, Bateman CC, Hulcr J. 2016. Flavodon ambrosius sp. nov., a basidiomycetous mycosymbiont of Ambrosiodmus ambrosia beetles. Mycotaxon 131: 277–285. (Selected for issue cover figure)
Kasson MT, Wickert KL, Stauder CM, Macias AM, Berger MC, Simmons DR, Short DPG, DeVallance DB, Hulcr J. 2016. Mutualism with aggressive wood-degrading Flavodon ambrosius (Polyporales) facilitates niche expansion and communal social structure in Ambrosiophilus ambrosia beetles. Fungal Ecology 23: 86–96.
Longcore JE, Simmons DR, Letcher PM. 2016. Synchytrium microbalum sp. nov. is a saprobic species in a lineage of parasites. Fungal Biology: In press.
Simmons DR, Kepler RM, Rehner SA, Groden E. 2015. Phylogeny of Hirsutella species (Ophiocordycipitaceae) from the United States: remedying the paucity of Hirsutella sequence data. IMA Fungus 6: 345–356.
You L, Simmons DR, Bateman CC, Short DPG, Kasson MT, Rabaglia R, Hulcr J. 2015. New fungus-insect symbiosis: culturing, molecular, and histological methods determine saprophytic Polyporales mutualists of Ambrosiodmus ambrosia beetles. PLoS ONE 10: e0137689.
Simmons DR, Lund J, Levitsky T, Groden E. 2015.Ophiocordyceps myrmicarum, a new species infecting invasive Myrmica rubra in Maine. Journal of Invertebrate Pathology. 125: 23-30
Hajek AE, Longcore JE, Simmons DR, Peters K, Humber RA. 2013. Chytrid mycoparasitism of entomophthoralean azygospores. Journal of Invertebrate Pathology 114: 333–336.
Simmons DR, Longcore JE. 2012. Thoreauomyces gen. nov., Fimicolochytrium gen. nov. and additional species in Geranomyces. Mycologia 104: 1229–1243.
Longcore JE, Simmons DR. 2012. The Polychytriales ord. nov. contains chitinophilic members of the rhizophlyctoid alliance. Mycologia 104: 276–294.
Simmons DR, Letcher PM, Powell MJ, Longcore JE. 2012. Alogomyces tanneri gen. et sp. nov., a chytrid in Lobulomycetales from horse manure. Mycologia 104: 157–163.
Steiger RA, Simmons DR, Longcore JE. 2011. Cylindrochytridium johnstonii is a member of the Cladochytriales. Mycotaxon 118: 293–302.
Simmons DR. 2011. Phylogeny of Powellomycetaceae fam. nov. and description of Geranomyces variabilis gen. et comb. nov. Mycologia 103: 1411–1420.
Freeman KR, Martin AP, Karki D, Lynch RC, Mitter MS, Meyer AF, Longcore JE, Simmons DR, Schmidt SK. 2009. Evidence that chytrids dominate fungal communities in high-elevation soils. Proceedings of the National Academy of Sciences 106: 18315–18320.
Mozley-Standridge SE, Letcher PM, Longcore JE, Porter D, Simmons DR. 2009. Cladochytriales — a new order in Chytridiomycota. Mycological Research 113: 498–507.
Simmons DR, James TY, Meyer AF, Longcore JE. 2009. Lobulomycetales, a new order in the Chytridiomycota. Mycological Research 113: 450–460.
Books & Reviews
Longcore JE, Simmons DR. 2012. Blastocladiomycota (8 pp.). In: Encyclopedia of Life Sciences. John Wiley & Sons, Ltd: Chichester. www.els.net
Longcore JE, Simmons DR. 2012. Chytridiomycota (11 pp.). In: Encyclopedia of Life Sciences. John Wiley & Sons, Ltd: Chichester. www.els.net
Professional Presentations
Simmons DR, De Beer ZW, Huang Y-T, Bateman C, Storer CG, Dreaden TJ, Li Y, Ploetz RC, Kasson MT, Hulcr J. Increasing diversity of ambrosia beetle mycosymbionts emphasizes dynamic field of plant-animal-fungus symbioses. 2016. Presentation at Mycological Society of America Annual Meeting, Berkeley, California, USA.
Simmons DR, De Beer ZW, Huang Y-T, Bateman C, Campbell AS, Dreaden TJ, Li Y, Ploetz RC, Wingfield MJ, Hulcr J. New Raffaelea species (Ophiostomatales) from the United States and Taiwan associated with ambrosia beetles and plant hosts. 2016. Poster at Mycological Society of America Annual Meeting, Berkeley, California, USA.
Simmons DR, Li Y, Bateman CC, Short DPG, Kasson MT, Hulcr J. 2015. New fungus-insect symbiosis: molecular and histological methods determine hyphal Polyporales symbionts of Ambrosiodmus ambrosia beetles. Presentation at Mycological Society of America Annual Meeting in Edmonton, Alberta, Canada
Simmons DR, Groden E. 2014. Hirsutella species are polyphyletic in Ophiocordycipitaceae. Poster at Mycological Society of America Annual Meeting in East Lansing, Michigan, USA.
Simmons DR, Lund J, Levitsky T, Groden E. 2012. Hirsutella myrmicarum nom. prov. (Ophiocordycipitaceae; Hypocreales), a new species infecting invasive Myrmica rubra in Maine. Poster at MassMyco Meeting in Worcester, Massachusetts, USA.
Simmons DR, Longcore JE. 2011. Phylogeny of Powellomycetaceae fam. nov. in Spizellomycetales. Presentation at Mycological Society of America Annual Meeting in Fairbanks, Alaska, USA.
Simmons DR, James TY, Longcore JE. 2010. Molecular and ultrastructural evidence from additional isolates support elevation of the Polychytrium clade (Chytridiomycetes) to ordinal status. Poster at Mycological Society of America Annual Meeting in Lexington, Kentucky, USA.
Simmons DR. 2009. Chytridiomycota: thallus development. Symposium: Teaching with basal fungal lineages. Presentation at Mycological Society of America Annual Meeting in Snowbird, Utah, USA.
Simmons DR, Chambers JG, Churchill PF, Wakefield WS. 2008. Diversity within the genus Powellomyces (Spizellomycetales, Chytridiomycota). Poster at Mycological Society of America Annual Meeting in State College, Pennsylvania, USA.
Simmons DR, Longcore JE, James TY. 2006. Genetic and zoospore ultrastructural data support a new chytrid genus. Poster at Mycological Society of America Annual Meeting in Quebec City, Quebec, Canada.