Cited by 519Evolution and Genetic DynamicsLanguage and cultural evolutionPhilosophy and History of Science

The population genetics of ecological specialization in evolving Escherichia coli populations

Cooper, Vaughn S., Lenski, Richard E.·2000·Nature

Abstract

When organisms adapt genetically to one environment, they may lose fitness in other environments. Two distinct population genetic processes can produce ecological specialization-mutation accumulation and antagonistic pleiotropy. In mutation accumulation, mutations become fixed by genetic drift in genes that are not maintained by selection; adaptation to one environment and loss of adaptation to another are caused by different mutations. Antagonistic pleiotropy arises from trade-offs, such that the same mutations that are beneficial in one environment are detrimental in another. In general, it is difficult to distinguish between these processes. We analysed the decay of unused catabolic functions in 12 lines of Escherichia coli propagated on glucose for 20,000 generations. During that time, several lines evolved high mutation rates. If mutation accumulation is important, their unused functions should decay more than the other lines, but no significant difference was observed. Moreover, most catabolic losses occurred early in the experiment when beneficial mutations were being rapidly fixed, a pattern predicted by antagonistic pleiotropy. Thus, antagonistic pleiotropy appears more important than mutation accumulation for the decay of unused catabolic functions in these populations.

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Crossref · 10.1038/35037572

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  • Due to transcriptional profiling and massive next-generation DNA sequencing, phenotype-genotype correlations can be easily obtained by whole genome re-sequencing.

    “Moreover, due to rather new technologies, including transcriptional profiling [30] and massive next-generation DNA sequencing (NGS) [31,32], phenotype-genotype correlations can be easily obtained by whole genome re-sequencing (WGS).”

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  1. Cooper, V. S. Consequences of ecological specialization in experimental long-term evolving populations of Escherichia coli. Thesis, Michigan State Univ. (2000).

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Authors
Cooper, V. S., & Lenski, R. E.
Affiliations
Michigan State University (US)
Corresponding author
Cooper, Vaughn S.
Venue
Nature
Published
2000-10
Volume
407
Issue
6805
Pages
736-739
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1480307447
Cited by
519
References
23
Citations by year
2026: 11 · 2025: 18 · 2024: 8 · 2023: 23 · 2022: 20 · 2021: 20 · 2020: 22 · 2019: 19 · 2018: 13 · 2017: 20 · 2016: 16 · 2015: 17 · 2014: 29 · 2013: 27 · 2012: 32
FWCI
8.36
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
National Natural Science Foundation of China
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
  • Social Sciences › Cultural Studies › Language and cultural evolution
  • Social Sciences › Arts and Humanities › History and Philosophy of Science › Philosophy and History of Science
Keywords
ecological specialization, antagonistic pleiotropy, mutation accumulation, Escherichia coli, fitness trade-offs, mutation rate evolution, genetic drift
MeSH terms
Adaptation, Physiological, Ecology, Escherichia coli, Genes, Bacterial, Glucose, Models, Biological, Mutation, Evolution, Molecular

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