Department of Biological Sciences > Faculty & Staff > Microbiology > Michael E. S. Hudspeth, Deborah S. S. Hudspeth

Representative Publications

Grayburn, W. Scott, Hudspeth, Deborah S.S., Gane, Melody K., and Hudspeth, Michael E.S. (2004). The mitochondrial genome of Saprolegnia ferax: organization, gene content, and nucleotide sequence. Mycologia 96, 981-989 (PDF)

Hudspeth, Deborah S.S., Stenger, Drake, and Hudspeth, Michael E.S. (2003) A cox2 Phylogenetic hypothesis for the downy mildews and white rusts. Fungal Diversity 13, 47-57. (PDF)

Hudspeth, D. S. S., S.A. Nadler, and Hudspeth, M. E. S. 2000. A cox2 molecular phylogeny of the Peronosporomycetes. Mycologia 92, 674-684. (PDF)

Cook, K. L., D. S. S. Hudspeth and M. E. S. Hudspeth. 2001. A cox2 phylogeny of terrestrial and marine parasitic Peronosporomycetes (Oomycetes). Nova Hedwigia 122, 231-243. (PDF)

Nadler, Steven A., Hoberg, Eric P., Hudspeth, Deborah S. S., Rickard, Lora G. (2000). Relationships of Nematodirus species and Nematodirus battus isolates (Nematoda: Trichostrongyloidea) based on nuclear ribosomal DNA sequences. J. Parasit. 86, 588-601 (PDF)

Nadler, Steven A., Hudspeth, Deborah S. S. (2000). Phylogeny of the Ascaridoidea (Nematoda: Ascaridida) based on two genes and morphology: Hypotheses of structural and sequence evolution. J. Parasit. 86, 380-393. (PDF)

Nadler, S.A., Hudspeth, D.S.S. (1999). Ribosomal DNA phylogeny of the Ascaridoidea (Nemata: Secernentea): Implications for morphological evolution and classification. Mol. Phylog. Evol. 10, 221-236. (PDF)

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2002, D.S.S. and M.E.S. Hudspeth

Research Interests

Our laboratory's research focuses on the systematics and molecular biology of the Peronosporomycetes (Oomycetes) - fungal-like heterotrophs related to the chromophytic algae in an assemblage referred to as the "stramenopiles". We are especially interested in this group because of their diverse pathogenicity which includes hosts of significant economic importance in both agriculture and aquaculture. Our primary research efforts rely upon data derived from the investigation of mitochondrial genomes (mtDNA). 

For our systematics studies we primarily use DNA sequences from the mitochondrial cox2 locus to infer evolutionary relationships among the 70 or so established oomycete genera. Our resulting analyses are subsequently compared with those derived from the more traditional morphological and biochemical characters. For very closely related genera we rely on combinations of molecular data from both additional mitochondrial genes and SSU-rDNA sequences. A sample cox2 tree is illustrated below.

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