Reticulate Evolution

Symbiogenesis, Lateral Gene Transfer, Hybridization and Infectious Heredity

  • Nathalie Gontier

Part of the Interdisciplinary Evolution Research book series (IDER, volume 3)

Table of contents

About this book

Introduction

Written for non-experts, this volume introduces the mechanisms that underlie reticulate evolution. Chapters are either accompanied with glossaries that explain new terminology or timelines that position pioneering scholars and their major discoveries in their historical contexts. The contributing authors outline the history and original context of discovery of symbiosis, symbiogenesis, lateral gene transfer, hybridization or divergence with gene flow, and infectious heredity. By applying key insights from the areas of molecular (phylo)genetics, microbiology, virology, ecology, systematics, immunology, epidemiology and computational science, they demonstrate how reticulate evolution impacts successful survival, fitness and speciation.

Reticulate evolution brings forth a challenge to the standard Neo-Darwinian framework, which defines life as the outcome of bifurcation and ramification patterns brought forth by the vertical mechanism of natural selection. Reticulate evolution puts forward a pattern in the tree of life that is characterized by horizontal mergings and lineage crossings induced by symbiosis, symbiogenesis, lateral gene transfer, hybridization or divergence with gene flow, and infective heredity, making the “tree of life” look more like a “web of life.” On an epistemological level, the various means by which hereditary material can be transferred horizontally challenges our classic notions of units and levels of evolution, fitness, modes of transmission, linearity, communities, and biological individuality.

 

The case studies presented examine topics including the origin of the eukaryotic cell and its organelles through symbiogenesis; the origin of algae through primary and secondary symbiosis and dinoflagellates through tertiary symbiosis; the superorganism and holobiont as units of evolution; how endosymbiosis induces speciation in multicellular life forms; transferrable and non-transferrable plasmids and how they symbiotically interact with their host; the means by which pro- and eukaryotic organisms transfer genes laterally (bacterial transformation, transduction and conjugation as well as transposons and other mobile genetic elements); hybridization and divergence with gene flow in sexually-reproducing individuals; current (human) microbiome and viriome studies that impact our knowledge concerning the evolution of organismal health and acquired immunity; and how symbiosis and symbiogenesis can be modelled in computational evolution.

Keywords

co-evolution ecology endogenous retroviruses endosymbiosis evolution evolutionary biology history and philosophy of science hybridization infectious heredity lateral gene transfer microbial biology plasmids retroviruses sociobiology symbiogenesis symbiosis virology

Editors and affiliations

  • Nathalie Gontier
    • 1
  1. 1.AppEEL—Applied Evolutionary Epistemology LabUniversity of LisbonLisbonPortugal

Bibliographic information

  • DOI https://doi.org/10.1007/978-3-319-16345-1
  • Copyright Information Springer International Publishing Switzerland 2015
  • Publisher Name Springer, Cham
  • eBook Packages Biomedical and Life Sciences
  • Print ISBN 978-3-319-16344-4
  • Online ISBN 978-3-319-16345-1
  • Series Print ISSN 2199-3068
  • Series Online ISSN 2199-3076
  • About this book