Phylogeny of the Zygomycota Based on Nuclear Ribosomal Sequence Data
Mycologia, 98(6), 2006, pp. 872–884. # 2006 by The Mycological Society of America, Lawrence, KS 66044-8897 Phylogeny of the Zygomycota based on nuclear ribosomal sequence data Merlin M. White1,2 lineages are distinct from the Mucorales, Endogo- Department of Ecology & Evolutionary Biology, nales and Mortierellales, which appear more closely University of Kansas, Lawrence, Kansas 66045-7534 related to the Ascomycota + Basidiomycota + Timothy Y. James Glomeromycota. The final major group, the insect- Department of Biology, Duke University, Durham, associated Entomophthorales, appears to be poly- North Carolina 27708 phyletic. In the present analyses Basidiobolus and Neozygites group within Zygomycota but not with the Kerry O’Donnell Entomophthorales. Clades are discussed with special NCAUR, ARS, USDA, Peoria, Illinois 61604 reference to traditional classifications, mapping mor- Matı´as J. Cafaro phological characters and ecology, where possible, as Department of Biology, University of Puerto Rico at a snapshot of our current phylogenetic perspective of Mayagu¨ ez, Mayagu¨ ez, Puerto Rico 00681 the Zygomycota. Key words: Asellariales, basal lineages, Chytridio- Yuuhiko Tanabe mycota, Fungi, molecular systematics, opisthokont Laboratory of Intellectual Fundamentals for Environmental Studies, National Institute for Environmental Studies, Ibaraki 305-8506, Japan INTRODUCTION Junta Sugiyama Most studies suggest that the phylum Zygomycota is Tokyo Office, TechnoSuruga Co. Ltd., 1-8-3, Kanda not monophyletic and the classification of the entire Ogawamachi, Chiyoda-ku, Tokyo 101-0052, Japan phylum is in flux. The Zygomycota currently is divided into two classes, the Zygomycetes and Trichomycetes. However molecular phylogenies sug- Abstract: The Zygomycota is an ecologically heter- gest that neither group is natural (i.e. monophyletic).
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