Phylogenetic analysis of Phytophthora species based on mitochondrial and nuclear DNA sequences

被引:387
作者
Kroon, LPNM
Bakker, FT
van den Bosch, GBM
Bonants, PJM
Flier, WG
机构
[1] Plant Res Int, NL-6700 AA Wageningen, Netherlands
[2] Univ Wageningen Branch, Natl Herbarium Nederland, NL-6703 BL Wageningen, Netherlands
关键词
descriptors; Phytophthora phylogeny; translation elongation factor 1 alpha; beta-tubulin; cytochrome c oxidase; NADH dehydrogenase; Pythium achlya; Pylaiella; Ophiocytium; Fragilaria;
D O I
10.1016/j.fgb.2004.03.007
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
A molecular phylogenetic analysis of the genus Phytophthora was performed, 113 isolates from 48 Phytophthoru 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. Phylophthora 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. (C) 2004 Elsevier Inc. All rights reserved.
引用
收藏
页码:766 / 782
页数:17
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