1. Phylogenetic analysis of Phytophthora species based on mitochondrial and nuclear DNA sequences.
- Author
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Kroon LP, Bakker FT, van den Bosch GB, Bonants PJ, and Flier WG
- Subjects
- Biological Evolution, Electron Transport Complex IV classification, Electron Transport Complex IV genetics, Molecular Sequence Data, NADH Dehydrogenase classification, NADH Dehydrogenase genetics, Open Reading Frames genetics, Peptide Elongation Factor 1 classification, Peptide Elongation Factor 1 genetics, Phytophthora genetics, Sequence Analysis, DNA, Tubulin classification, Tubulin genetics, Cell Nucleus genetics, DNA classification, DNA, Mitochondrial classification, Phylogeny, Phytophthora classification
- Abstract
A molecular phylogenetic analysis of the genus Phytophthora was performed, 113 isolates from 48 Phytophthora species were included in this analysis. Phylogenetic analyses were performed on regions of mitochondrial (cytochrome c oxidase subunit 1; NADH dehydrogenase subunit 1) and nuclear gene sequences (translation elongation factor 1alpha; beta-tubulin) and comparisons made to test for incongruence between the mitochondrial and nuclear data sets. The genus Phytophthora was confirmed to be monophyletic. In addition, results confirm that the classical taxonomic grouping as described by [Waterhouse (1963)] does not reflect true phylogenetic relations. Phytophthora species were redistributed into 8 clades, providing a more accurate representation of phylogenetic relationships within the genus Phytophthora. The evolution and transition of morphological, pathogenic, and reproductive traits was inferred from the cladogram generated in this study. Mating system was inferred to be a homoplasious trait, with at least eight independent transitions from homothallism to heterothallism observed.
- Published
- 2004
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