Evolutionary relationships within the Phytophthora cactorum species complex in Europe.
Identifieur interne : 000B90 ( Main/Corpus ); précédent : 000B89; suivant : 000B91Evolutionary relationships within the Phytophthora cactorum species complex in Europe.
Auteurs : Mat J Pánek ; Tomáš Fér ; Jaroslav Mrá Ek ; Michal TomšovskSource :
- Fungal biology [ 1878-6146 ]
English descriptors
- KwdEn :
- Amplified Fragment Length Polymorphism Analysis (MeSH), Cluster Analysis (MeSH), DNA, Fungal (genetics), DNA, Ribosomal Spacer (genetics), Europe (MeSH), Evolution, Molecular (MeSH), Fungal Proteins (genetics), Genotype (MeSH), Phylogeny (MeSH), Phytophthora (classification), Phytophthora (genetics), Sequence Analysis, DNA (MeSH).
- MESH :
- chemical , genetics : DNA, Fungal, DNA, Ribosomal Spacer, Fungal Proteins.
- classification : Phytophthora.
- genetics : Phytophthora.
- Amplified Fragment Length Polymorphism Analysis, Cluster Analysis, Europe, Evolution, Molecular, Genotype, Phylogeny, Sequence Analysis, DNA.
Abstract
The Phytophthora cactorum species complex in Europe is composed of P. cactorum, Phytophthora hedraiandra, and a hybrid species Phytophthora × serendipita. Evolutionary analyses using the amplified fragment length polymorphism (AFLP) method were carried out on 133 isolates from 19 countries. The AFLP data were complemented by sequence analysis of three genes (ITS region of ribosomal RNA gene, phenolic acid decarboxylase - Pheca I, and Cytochrome oxidase - Cox I), morphometric analysis and cardinal temperature data. The high proportion of clonal genotypes, low gene flow among groups, which was defined by the structure analysis, and low Nei's gene diversity confirms the homothallic life cycle of the groups. On the other hand, the ITS, Cox I and Pheca I sequence data support occasional hybridization between species. The structure K = 5 grouping revealed two groups of hybrid origin (C2 and F). While the C2 group resembles P. × serendipita, the F group includes Finnish isolates characterized by high oogonial abortion rates and slow growth. The morphological characters routinely used in identification of Phytophthora species are not useful for delimitation of species from the P. cactorum complex. Therefore, we discuss the status of P. hedraiandra as a separate species. The epitypification of P. cactorum is proposed.
DOI: 10.1016/j.funbio.2016.03.006
PubMed: 27268244
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pubmed:27268244Le document en format XML
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<author><name sortKey="Panek, Mat J" sort="Panek, Mat J" uniqKey="Panek M" first="Mat J" last="Pánek">Mat J Pánek</name>
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<author><name sortKey="Fer, Tomas" sort="Fer, Tomas" uniqKey="Fer T" first="Tomáš" last="Fér">Tomáš Fér</name>
<affiliation><nlm:affiliation>Faculty of Science, Charles University in Prague, Department of Botany, Benátská 2, 128 43, Prague, Czech Republic.</nlm:affiliation>
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<author><name sortKey="Mra Ek, Jaroslav" sort="Mra Ek, Jaroslav" uniqKey="Mra Ek J" first="Jaroslav" last="Mrá Ek">Jaroslav Mrá Ek</name>
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<term>DNA, Ribosomal Spacer (genetics)</term>
<term>Europe (MeSH)</term>
<term>Evolution, Molecular (MeSH)</term>
<term>Fungal Proteins (genetics)</term>
<term>Genotype (MeSH)</term>
<term>Phylogeny (MeSH)</term>
<term>Phytophthora (classification)</term>
<term>Phytophthora (genetics)</term>
<term>Sequence Analysis, DNA (MeSH)</term>
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<term>Cluster Analysis</term>
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<front><div type="abstract" xml:lang="en">The Phytophthora cactorum species complex in Europe is composed of P. cactorum, Phytophthora hedraiandra, and a hybrid species Phytophthora × serendipita. Evolutionary analyses using the amplified fragment length polymorphism (AFLP) method were carried out on 133 isolates from 19 countries. The AFLP data were complemented by sequence analysis of three genes (ITS region of ribosomal RNA gene, phenolic acid decarboxylase - Pheca I, and Cytochrome oxidase - Cox I), morphometric analysis and cardinal temperature data. The high proportion of clonal genotypes, low gene flow among groups, which was defined by the structure analysis, and low Nei's gene diversity confirms the homothallic life cycle of the groups. On the other hand, the ITS, Cox I and Pheca I sequence data support occasional hybridization between species. The structure K = 5 grouping revealed two groups of hybrid origin (C2 and F). While the C2 group resembles P. × serendipita, the F group includes Finnish isolates characterized by high oogonial abortion rates and slow growth. The morphological characters routinely used in identification of Phytophthora species are not useful for delimitation of species from the P. cactorum complex. Therefore, we discuss the status of P. hedraiandra as a separate species. The epitypification of P. cactorum is proposed.</div>
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<Title>Fungal biology</Title>
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<ArticleTitle>Evolutionary relationships within the Phytophthora cactorum species complex in Europe.</ArticleTitle>
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<Abstract><AbstractText>The Phytophthora cactorum species complex in Europe is composed of P. cactorum, Phytophthora hedraiandra, and a hybrid species Phytophthora × serendipita. Evolutionary analyses using the amplified fragment length polymorphism (AFLP) method were carried out on 133 isolates from 19 countries. The AFLP data were complemented by sequence analysis of three genes (ITS region of ribosomal RNA gene, phenolic acid decarboxylase - Pheca I, and Cytochrome oxidase - Cox I), morphometric analysis and cardinal temperature data. The high proportion of clonal genotypes, low gene flow among groups, which was defined by the structure analysis, and low Nei's gene diversity confirms the homothallic life cycle of the groups. On the other hand, the ITS, Cox I and Pheca I sequence data support occasional hybridization between species. The structure K = 5 grouping revealed two groups of hybrid origin (C2 and F). While the C2 group resembles P. × serendipita, the F group includes Finnish isolates characterized by high oogonial abortion rates and slow growth. The morphological characters routinely used in identification of Phytophthora species are not useful for delimitation of species from the P. cactorum complex. Therefore, we discuss the status of P. hedraiandra as a separate species. The epitypification of P. cactorum is proposed.</AbstractText>
<CopyrightInformation>Copyright © 2016 British Mycological Society. Published by Elsevier Ltd. All rights reserved.</CopyrightInformation>
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