Assembling a Reference Phylogenomic Tree of Bacteria and Archaea by Summarizing Many Gene Phylogenies

Qiyun Zhu, Siavash Mirarab

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Phylogenomics is the inference of phylogenetic trees based on multiple marker genes sampled in the genomes of interest. An important challenge in phylogenomics is the potential incongruence among the evolutionary histories of individual genes, which can be widespread in microorganisms due to the prevalence of horizontal gene transfer. This protocol introduces the procedures for building a phylogenetic tree of a large number of microbial genomes using a broad sampling of marker genes that are representative of whole-genome evolution. The protocol highlights the use of a gene tree summary method, which can effectively reconstruct the species tree while accounting for the topological conflicts among individual gene trees. The pipeline described in this protocol is scalable to tens of thousands of genomes while retaining high accuracy. We discussed multiple software tools, libraries, and scripts to enable convenient adoption of the protocol. The protocol is suitable for microbiology and microbiome studies based on public genomes and metagenomic data.

Original languageEnglish (US)
Title of host publicationMethods in Molecular Biology
PublisherHumana Press Inc.
Pages137-165
Number of pages29
DOIs
StatePublished - 2022

Publication series

NameMethods in Molecular Biology
Volume2569
ISSN (Print)1064-3745
ISSN (Electronic)1940-6029

Keywords

  • Genome sampling
  • Global markers
  • Horizontal gene transfer
  • Metagenomics
  • Microbiology
  • Phylogenomics
  • Tree summary

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics

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