Cited by 160Evolution and Genetic DynamicsMicrobial Metabolic Engineering and BioproductionBacterial Genetics and Biotechnology

Adaptive Evolution of Escherichia coli K-12 MG1655 during Growth on a Nonnative Carbon Source,l-1,2-Propanediol

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Lee, Dae-Hee, Palsson, Bernhard Ø.·2010·Applied and Environmental Microbiology

Abstract

Laboratory adaptive evolution studies can provide key information to address a wide range of issues in evolutionary biology. Such studies have been limited thus far by the inability of workers to readily detect mutations in evolved microbial strains on a genome scale. This limitation has now been overcome by recently developed genome sequencing technology that allows workers to identify all accumulated mutations that appear during laboratory adaptive evolution. In this study, we evolved Escherichia coli K-12 MG1655 with a nonnative carbon source,l-1,2-propanediol (l-1,2-PDO), for ∼700 generations. We found that (i) experimental evolution of E. coli for ∼700 generations in 1,2-PDO-supplemented minimal medium resulted in acquisition of the ability to use l-1,2-PDO as a sole carbon and energy source so that the organism changed from an organism that did not grow at all initially to an organism that had a growth rate of 0.35 h−1; (ii) six mutations detected by whole-genome resequencing accumulated in the evolved E. coli mutant over the course of adaptive evolution on l-1,2-PDO; (iii) five of the six mutations were within coding regions, and IS 5 was inserted between two fuc regulons; (iv) two major mutations (mutations in fucO and its promoter) involved in l-1,2-PDO catabolism appeared early during adaptive evolution; and (v) multiple defined knock-in mutant strains with all of the mutations had growth rates essentially matching that of the evolved strain. These results provide insight into the genetic basis underlying microbial evolution for growth on a nonnative substrate.

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Crossref · 10.1128/aem.00373-10

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  • Certain environments can lead to fast selection of improved phenotypes, whereas others, including long-term adaptation to environmental pH, represent complex environments where microbial cells show low adaptive potential in terms of absolute fitness gain.

    “Whereas certain environments can lead to fast selection of improved phenotypes, others, including the long-term adaptation to environmental pH [59,63], represent complex environments where microbial cells show low adaptive potential in terms of absolute fitness gain.”
  • Gene amplifications were identified to contribute to increased gene dosage and subsequently increased fitness.

    “In several recent studies, gene amplifications were identified to contribute to increased gene dosage [63,116,128] and subsequently increased fitness.”
  • Frequent rpoB mutations were found during batch evolution on glucose in E. coli.

    “Frequent rpoB mutations were also found during batch evolution on glucose in a more recent study [63]”
  • Increased growth during osmotic stress in E. coli was linked to mutations that led to increased expression of enterobactin biosynthesis genes, including fepA and entD.

    “Increased growth during osmotic stress was linked to mutations that led to increased expression of enterobactin biosynthesis genes (fepA and entD among others) [63].”
  • The rpoS mutation alone did not positively influence the growth rate in the ancestral ∆pgi E. coli strain; rpoS mutations were epistatically linked to additional mutations.

    “but most importantly the rpoS mutation alone did not positively influence the growth rate in the ancestral ∆pgi strain; rpoS mutations were epistatically linked to additional mutations.”

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Authors
Lee, D.-H., & Palsson, B. Ø.
Affiliations
University of California San Diego (US)
Venue
Applied and Environmental Microbiology
Published
2010-07
Volume
76
Issue
13
Pages
4158-4168
ISSN
  • 0099-2240 (ISSN-L)
  • 1098-5336
OpenAlex
W2135829725
Cited by
160
References
59
Citations by year
2026: 6 · 2025: 7 · 2024: 6 · 2023: 4 · 2022: 8 · 2021: 15 · 2020: 13 · 2019: 7 · 2018: 8 · 2017: 7 · 2016: 9 · 2015: 16 · 2014: 9 · 2013: 13 · 2012: 14
FWCI
8.10
Type
journal article
Language
en
Open access
Locations
  • Applied and Environmental Microbiology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • U.S. Department of Energy (FC02-02ER63446)
  • National Institutes of Health
  • Office of Science
  • University of California, San Diego
  • National Institute of General Medical Sciences (R01GM062791, GM 062791)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Evolution and Genetic Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
Keywords
Escherichia coli MG1655, adaptive evolution, whole-genome resequencing, growth rate, microbial evolution
MeSH terms
Adaptation, Physiological, Culture Media, DNA, Bacterial, Mutation, Polymerase Chain Reaction, Genome, Bacterial, Sequence Analysis, DNA, Directed Molecular Evolution, Propylene Glycol, Escherichia coli K12

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