A molecular phylogeny of <Emphasis Type="Italic">Haptoglossa</Emphasis> species,terrestrial peronosporomycetes (oomycetes) endoparasitic on nematodes |
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Authors: | Masateru Hakariya Dai Hirose Seiji Tokumasu |
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Institution: | (1) Sugadaira Montane Research Center, University of Tsukuba, Ueda Nagano, 386-2201, Japan |
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Abstract: | Phylogenetic relationships of seven Haptoglossa isolates were analyzed by using mitochondrial COII amino acid sequences with a data set of 34 peronosporomycetes. Haptoglossa isolates formed a single clade and appeared to be basal to the clade consisting of all other peronosporomycetes. The Haptoglossa clade was divided into two subclades: one clade consisted of five aplanosporic isolates and the other included one aplanosporic
and one zoosporic isolate. These results indicate that the genus Haptoglossa is monophyletic, and patterns of infection cell formation reflect more the phylogenetic relationship between the species
than patterns of sporogenesis. |
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Keywords: | Haptoglossa Mitochondrial cytochrome c oxidase subunit Molecular phylogeny Nematode parasites Peronosporomycetes (Oomycetes) |
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