A Nuclear Ribosomal DNA Phylogeny of Acer Inferred with Maximum Likelihood, Splits Graphs, and Motif Analysis of 606 Sequences
The multi-copy internal transcribed spacer (ITS) region of nuclear ribosomal DNA is widely used to infer phylogenetic relationships among closely related taxa. Here we use maximum likelihood (ML) and splits graph analyses to extract phylogenetic information from ~ 600 mostly cloned ITS sequences, re...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2006-01-01
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| Series: | Evolutionary Bioinformatics |
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| Online Access: | http://la-press.com/article.php?article_id=132 |
| _version_ | 1818244378123042816 |
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| author | Guido W. Grimm Susanne S. Renner Alexandros Stamatakis Vera Hemleben |
| author_facet | Guido W. Grimm Susanne S. Renner Alexandros Stamatakis Vera Hemleben |
| author_sort | Guido W. Grimm |
| collection | DOAJ |
| description | The multi-copy internal transcribed spacer (ITS) region of nuclear ribosomal DNA is widely used to infer phylogenetic relationships among closely related taxa. Here we use maximum likelihood (ML) and splits graph analyses to extract phylogenetic information from ~ 600 mostly cloned ITS sequences, representing 81 species and subspecies of Acer, and both species of its sister Dipteronia. Additional analyses compared sequence motifs in Acer and several hundred Anacardiaceae, Burseraceae, Meliaceae, Rutaceae, and Sapindaceae ITS sequences in GenBank. We also assessed the effects of using smaller data sets of consensus sequences with ambiguity coding (accounting for within-species variation) instead of the full (partly redundant) original sequences. Neighbor-nets and bipartition networks were used to visualize conflict among character state patterns. Species clusters observed in the trees and networks largely agree with morphology-based classifications; of de Jong’s (1994) 16 sections, nine are supported in neighbor-net and bipartition networks, and ten by sequence motifs and the ML tree; of his 19 series, 14 are supported in networks, motifs, and the ML tree. Most nodes had higher bootstrap support with matrices of 105 or 40 consensus sequences than with the original matrix. Within-taxon ITS divergence did not differ between diploid and polyploid Acer, and there was little evidence of differentiated parental ITS haplotypes, suggesting that concerted evolution in Acer acts rapidly. |
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| format | Article |
| id | doaj.art-11da5a02eeaa4e229718672743b8a4a3 |
| institution | Directory Open Access Journal |
| issn | 1176-9343 |
| language | English |
| last_indexed | 2024-12-12T14:16:04Z |
| publishDate | 2006-01-01 |
| publisher | SAGE Publishing |
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| series | Evolutionary Bioinformatics |
| spelling | doaj.art-11da5a02eeaa4e229718672743b8a4a32022-12-22T00:21:53ZengSAGE PublishingEvolutionary Bioinformatics1176-93432006-01-012722A Nuclear Ribosomal DNA Phylogeny of Acer Inferred with Maximum Likelihood, Splits Graphs, and Motif Analysis of 606 SequencesGuido W. GrimmSusanne S. RennerAlexandros StamatakisVera HemlebenThe multi-copy internal transcribed spacer (ITS) region of nuclear ribosomal DNA is widely used to infer phylogenetic relationships among closely related taxa. Here we use maximum likelihood (ML) and splits graph analyses to extract phylogenetic information from ~ 600 mostly cloned ITS sequences, representing 81 species and subspecies of Acer, and both species of its sister Dipteronia. Additional analyses compared sequence motifs in Acer and several hundred Anacardiaceae, Burseraceae, Meliaceae, Rutaceae, and Sapindaceae ITS sequences in GenBank. We also assessed the effects of using smaller data sets of consensus sequences with ambiguity coding (accounting for within-species variation) instead of the full (partly redundant) original sequences. Neighbor-nets and bipartition networks were used to visualize conflict among character state patterns. Species clusters observed in the trees and networks largely agree with morphology-based classifications; of de Jong’s (1994) 16 sections, nine are supported in neighbor-net and bipartition networks, and ten by sequence motifs and the ML tree; of his 19 series, 14 are supported in networks, motifs, and the ML tree. Most nodes had higher bootstrap support with matrices of 105 or 40 consensus sequences than with the original matrix. Within-taxon ITS divergence did not differ between diploid and polyploid Acer, and there was little evidence of differentiated parental ITS haplotypes, suggesting that concerted evolution in Acer acts rapidly.http://la-press.com/article.php?article_id=132Bipartition networkslarge-scale maximum likelihood analysesneighbor-netsRAxMLribosomal DNAITS sequence motifs |
| spellingShingle | Guido W. Grimm Susanne S. Renner Alexandros Stamatakis Vera Hemleben A Nuclear Ribosomal DNA Phylogeny of Acer Inferred with Maximum Likelihood, Splits Graphs, and Motif Analysis of 606 Sequences Evolutionary Bioinformatics Bipartition networks large-scale maximum likelihood analyses neighbor-nets RAxML ribosomal DNA ITS sequence motifs |
| title | A Nuclear Ribosomal DNA Phylogeny of Acer Inferred with Maximum Likelihood, Splits Graphs, and Motif Analysis of 606 Sequences |
| title_full | A Nuclear Ribosomal DNA Phylogeny of Acer Inferred with Maximum Likelihood, Splits Graphs, and Motif Analysis of 606 Sequences |
| title_fullStr | A Nuclear Ribosomal DNA Phylogeny of Acer Inferred with Maximum Likelihood, Splits Graphs, and Motif Analysis of 606 Sequences |
| title_full_unstemmed | A Nuclear Ribosomal DNA Phylogeny of Acer Inferred with Maximum Likelihood, Splits Graphs, and Motif Analysis of 606 Sequences |
| title_short | A Nuclear Ribosomal DNA Phylogeny of Acer Inferred with Maximum Likelihood, Splits Graphs, and Motif Analysis of 606 Sequences |
| title_sort | nuclear ribosomal dna phylogeny of acer inferred with maximum likelihood splits graphs and motif analysis of 606 sequences |
| topic | Bipartition networks large-scale maximum likelihood analyses neighbor-nets RAxML ribosomal DNA ITS sequence motifs |
| url | http://la-press.com/article.php?article_id=132 |
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