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Can We "Future-Proof" Consensus Trees?

David Bryant1, Andrew Francis2, Mike Steel3

  • 1Computational Modeling, Department of Mathematics and Statistics, University of Otago, Dunedin, New Zealand.

Systematic Biology
|February 8, 2017
PubMed
Summary
This summary is machine-generated.

Phylogenetic consensus methods aim to combine evolutionary trees. However, a surprising "no-go" theorem shows no reasonable method is fully "future proof" when adding new species data.

Keywords:
Adams consensusconsensusextension stabilityphylogeny

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Area of Science:

  • Phylogenetics
  • Computational Biology
  • Evolutionary Biology

Background:

  • Consensus methods are crucial for synthesizing multiple phylogenetic trees into a single evolutionary estimate.
  • Adding new taxa can lead to conflicting evolutionary signals in existing trees, challenging consensus reliability.

Purpose of the Study:

  • To investigate the conditions under which phylogenetic consensus methods are "future proof" against new data.
  • To determine if consensus trees remain stable when new taxa and their associated trees are introduced.

Main Methods:

  • Theoretical analysis of consensus methods under varying input data.
  • Examination of specific consensus algorithms like Adams consensus.
  • Development of a
  • no-go
  • theorem for general consensus methods.

Main Results:

  • Some consensus methods, like Adams consensus, exhibit future-proofing for specific data types.
  • A general "no-go" theorem demonstrates that no "reasonable" consensus method is universally future-proof when new taxa are added.
  • Positive and negative results were found for a second notion of future-proofing involving the addition of trees.

Conclusions:

  • The quest for universally "future proof" phylogenetic consensus methods faces significant theoretical limitations.
  • The study highlights the inherent challenges in creating robust evolutionary tree inference methods that accommodate evolving datasets.