Phylogenetic analysis of Phytophthora species based on mitochondrial and nuclear DNA sequences
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 sequen...
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Veröffentlicht in: | Fungal genetics and biology 2004-08, Vol.41 (8), p.766-782 |
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Sprache: | eng |
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Zusammenfassung: | 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 1α; β-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.
Index Descriptors: Phytophthora phylogeny; Translation elongation factor 1α; β-Tubulin; Cytochrome
c oxidase; NADH dehydrogenase;
Pythium;
Achlya;
Pylaiella;
Ophiocytium;
Fragilaria. |
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ISSN: | 1087-1845 1096-0937 |
DOI: | 10.1016/j.fgb.2004.03.007 |