Cited by 57Genomics and Phylogenetic StudiesEvolution and Paleontology StudiesPlant Diversity and Evolution

A phylogenomic supermatrix of Galliformes (Landfowl) reveals biased branch lengths

Kimball, Rebecca T., Hosner, Peter A., Braun, Edward L.·2021·Molecular Phylogenetics and Evolution

Abstract

Building taxon-rich phylogenies is foundational for macroevolutionary studies. One approach to improve taxon sampling beyond individual studies is to build supermatricies of publicly available data, incorporating taxa sampled across different studies and utilizing different loci. Most existing supermatrix studies have focused on loci commonly sequenced with Sanger technology ("legacy" markers, such as mitochondrial data and small numbers of nuclear loci). However, incorporating phylogenomic studies into supermatrices allows problem nodes to be targeted and resolved with considerable amounts of data, while improving taxon sampling with legacy data. Here we estimate phylogeny from a galliform supermatrix which includes well-known model and agricultural species such as the chicken and turkey. We assembled a supermatrix comprising 4500 ultra-conserved elements (UCEs) collected as part of recent phylogenomic studies in this group and legacy mitochondrial and nuclear (intron and exon) sequences. Our resulting phylogeny included 88% of extant species and recovered well-accepted relationships with strong support. However, branch lengths, which are particularly important in down-stream macroevolutionary studies, appeared vastly skewed. Taxa represented only by rapidly evolving mitochondrial data had high proportions of missing data and exhibited long terminal branches. Conversely, taxa sampled for slowly evolving UCEs with low proportions of missing data exhibited substantially shorter terminal branches. We explored several branch length re-estimation methods with particular attention to terminal branches and conclude that re-estimation using well-sampled mitochondrial sequences may be a pragmatic approach to obtain trees suitable for macroevolutionary analysis.

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Crossref · 10.1016/j.ympev.2021.107091

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Authors
Kimball, R. T., Hosner, P. A., & Braun, E. L.
Affiliations
  • University of Florida (US)
  • University of Copenhagen (DK)
Corresponding author
Kimball, Rebecca T.
Venue
Molecular Phylogenetics and Evolution
Publisher
Elsevier BV
Published
2021-05
Volume
158
Pages
107091
ISSN
1055-7903 (ISSN-L)
OpenAlex
W3126412472
Cited by
55
References
82
Citations by year
2026: 6 · 2025: 8 · 2024: 23 · 2023: 7 · 2022: 8 · 2021: 3
FWCI
2.76
Type
journal article
Language
en
Open access
closed
Locations
  • Molecular Phylogenetics and Evolution (publishedVersion)
  • PubMed (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
Funders
  • Danmarks Grundforskningsfond
  • Division of Environmental Biology
  • Villum Fonden
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Evolution and Paleontology Studies
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Plant Diversity and Evolution
Keywords
Galliformes, phylogenomics, supermatrix, ultraconserved elements, missing data, macroevolution, chickens, Turkey
MeSH terms
Animals, Cell Nucleus, Introns, Mitochondria, Phylogeny, Databases, Genetic, Galliformes

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