An overview of the higher level classification of Pucciniomycotina based on combined analyses of nuclear large and small subunit rDNA sequences.
In this study we provide a phylogenetically based introduction to the classes and orders of Pucciniomycotina (= Urediniomycetes), one of three subphyla of Basidiomycota. More than 8000 species of Pucciniomycotina have been described including putative saprotrophs and parasites of plants, animals and fungi. The overwhelming majority of these (approximately 90%) belong to a single order of obligate plant pathogens, the Pucciniales (= Uredinales), or rust fungi. We have assembled a dataset of previously published and newly generated sequence data from two nuclear rDNA genes (large subunit and small subunit) including exemplars from all known major groups in order to test hypotheses about evolutionary relationships among the Pucciniomycotina. The utility of combining nuc-lsu sequences spanning the entire D1-D3 region with complete nuc-ssu sequences for resolution and support of nodes is discussed. Our study confirms Pucciniomycotina as a monophyletic group of Basidiomycota. In total our results support eight major clades ranked as classes (Agaricostilbomycetes, Atractiellomycetes, Classiculomycetes, Cryptomycocolacomycetes, Cystobasidiomycetes, Microbotryomycetes, Mixiomycetes and Pucciniomycetes) and 18 orders.
Aime
M Catherine
MC
USDA-ARS, Systematic Botany and Mycology Lab, Beltsville, Maryland 20705, USA. cathie@nt.ars-grin.gov
Matheny
P Brandon
PB
Henk
Daniel A
DA
Frieders
Elizabeth M
EM
Nilsson
R Henrik
RH
Piepenbring
Meike
M
McLaughlin
David J
DJ
Szabo
Les J
LJ
Begerow
Dominik
D
Sampaio
José Paulo
JP
Bauer
Robert
R
Weiss
Michael
M
Oberwinkler
Franz
F
Hibbett
David
D
D001487:Basidiomycota / Q000145:classification* / Q000166:cytology / Q000235:genetics / Q000254:growth & development; D004271:DNA, Fungal / Q000737:chemistry / Q000235:genetics*; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics*; D008969:Molecular Sequence Data; D010802:Phylogeny; D012337:RNA, Ribosomal, 18S / Q000235:genetics*; D012339:RNA, Ribosomal, 28S / Q000235:genetics*; D017422:Sequence Analysis, DNA
D004271:DNA, Fungal; D004275:DNA, Ribosomal; D012337:RNA, Ribosomal, 18S; D012339:RNA, Ribosomal, 28S