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Genome-Wide Detection of Selection and Other Evolutionary Forces

  • Zhuofei XuEmail author
  • Rui Zhou
Part of the Methods in Molecular Biology book series (MIMB, volume 1231)

Abstract

As is well known, pathogenic microbes evolve rapidly to escape from the host immune system and antibiotics. Genetic variations among microbial populations occur frequently during the long-term pathogen–host evolutionary arms race, and individual mutation beneficial for the fitness can be fixed preferentially. Many recent comparative genomics studies have pointed out the importance of selective forces in the molecular evolution of bacterial pathogens. The public availability of large-scale next-generation sequencing data and many state-of-the-art statistical methods of molecular evolution enable us to scan genome-wide alignments for evidence of positive Darwinian selection, recombination, and other evolutionary forces operating on the coding regions. In this chapter, we describe an integrative analysis pipeline and its application to tracking featured evolutionary trajectories on the genome of an animal pathogen. The evolutionary analysis of the protein-coding part of the genomes will provide a wide spectrum of genetic variations that play potential roles in adaptive evolution of bacteria.

Key words

Sequence alignment Positive selection Intragenic homologous recombination Adaptive evolution Bacteria 

Notes

Acknowledgments

This work was supported by the National Basic Research Program of China (973 Program, 2012CB518802).

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Section of Microbiology, Department of BiologyUniversity of CopenhagenCopenhagenDenmark

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