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Citation: Nosenko, Tetyana and Schreiber, Fabian and Adamska, Maja and Adamski, Marcin and Eitel, Michael and Hammel, Jörg and Maldonado, Manuel and Müller, Werner and Nickel, Michael and Schierwater, Bernd and Vacelet, Jean and Wiens, Matthias and Wörheide, Gert: Additional data to: Deep metazoan phylogeny: When different genes tell different stories. 15. January 2013. Open Data LMU. https://doi.org/10.5282/ubm/data.55

Additional data to: Deep metazoan phylogeny: When different genes tell different stories
Additional data to: Deep metazoan phylogeny: When different genes tell different stories

Molecular phylogenetics resulted in a plethora of controversial hypotheses about the early diversification of non-bilaterian animals. To date, increasing the amount of DNA sequence data analyzed has been insufficient to resolve these relationships unequivocally. To unravel the causes for the patterns of extreme inconsistencies at the base of the metazoan tree of life, we constructed a novel supermatrix containing 122 genes, enriched with new non-bilaterian taxa. Comparative analyses of two non-overlapping multi-gene partitions of this dataset revealed conflicting phylogenetic signals. We show that gene sampling correlates with levels of saturation and Long Branch Attraction artifacts in the two partitions. Additional systematic errors are derived from significant variation in amino acid substitution patterns among metazoan lineages that violate the stationary assumption of models frequently used to reconstruct phylogenies. By modifying gene sampling and taxonomic composition of the outgroup, we were able to construct three different yet well-supported phylogenies. These results show that the accuracy of phylogenetic inference may be improved substantially by selecting genes that evolve slowly across metazoan lineages and applying more realistic substitution models. Additional non sequence-based markers are also necessary to assess the validity of phylogenetic reconstructions.

Animal Evolution, non-bilateria, phylogeny, phylogenomics, gene selection
Nosenko, Tetyana
Schreiber, Fabian
Adamska, Maja
Adamski, Marcin
Eitel, Michael
Hammel, Jörg
Maldonado, Manuel
Müller, Werner
Nickel, Michael
Schierwater, Bernd
Vacelet, Jean
Wiens, Matthias
Wörheide, Gert
2013

[img] Other (Supermatrices)
Nosenko_et_al_2013_MPE_supermatrices.zip

460kB
[img] Other (Tree Files (Newick Format))
Tree_files_for_MPE_submission.zip

5kB
[img] Other (Information about Supermatrices)
Nosenko_et_al_MPE_smatrix_info.zip

3kB

DOI: https://doi.org/10.5282/ubm/data.55

Abstract

Molecular phylogenetics resulted in a plethora of controversial hypotheses about the early diversification of non-bilaterian animals. To date, increasing the amount of DNA sequence data analyzed has been insufficient to resolve these relationships unequivocally. To unravel the causes for the patterns of extreme inconsistencies at the base of the metazoan tree of life, we constructed a novel supermatrix containing 122 genes, enriched with new non-bilaterian taxa. Comparative analyses of two non-overlapping multi-gene partitions of this dataset revealed conflicting phylogenetic signals. We show that gene sampling correlates with levels of saturation and Long Branch Attraction artifacts in the two partitions. Additional systematic errors are derived from significant variation in amino acid substitution patterns among metazoan lineages that violate the stationary assumption of models frequently used to reconstruct phylogenies. By modifying gene sampling and taxonomic composition of the outgroup, we were able to construct three different yet well-supported phylogenies. These results show that the accuracy of phylogenetic inference may be improved substantially by selecting genes that evolve slowly across metazoan lineages and applying more realistic substitution models. Additional non sequence-based markers are also necessary to assess the validity of phylogenetic reconstructions.

Keywords

Animal Evolution, non-bilateria, phylogeny, phylogenomics, gene selection

Source

Moloecular Phylogenetics and Evolution

Item Type:Data
Contact Person:Wörheide, Gert
E-Mail of Contact:woerheide at lmu.de
URL of Contact:http://www.palmuc.de
Subjects:Faculty of Geosciences
Dewey Decimal Classification:600 Natural sciences and mathematics > 560 Paleontology, Paleozoology
600 Natural sciences and mathematics > 590 Zoological sciences
ID Code:55
Deposited By: Prof. Dr. Gert Wörheide
Deposited On:29. Jan 2013 23:09
Last Modified:29. May 2017 09:31

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