Evolutionary Adaptation to Temperature. IV. Adaptation of Escherichia coli at a Niche Boundary

Evolution ◽  
1996 ◽  
Vol 50 (1) ◽  
pp. 35 ◽  
Author(s):  
Judith A. Mongold ◽  
Albert F. Bennett ◽  
Richard E. Lenski
Keyword(s):  
Escherichia Coli ◽  
Evolutionary Adaptation

Evolutionary Adaptation to Temperature. III. Adaptation of Escherichia coli to a Temporally Varying Environment

Evolution ◽  
1994 ◽  
Vol 48 (4) ◽  
pp. 1222 ◽  
Author(s):  
Armand M. Leroi ◽  
Richard E. Lenski ◽  
Albert F. Bennett
Keyword(s):  
Escherichia Coli ◽  
Evolutionary Adaptation ◽  
Varying Environment

scholarly journals High mutation rates limit evolutionary adaptation in Escherichia coli

PLoS Genetics ◽  
2018 ◽  
Vol 14 (4) ◽  
pp. e1007324 ◽  
Author(s):  
Kathleen Sprouffske ◽  
José Aguilar-Rodríguez ◽  
Paul Sniegowski ◽  
Andreas Wagner
Keyword(s):  
Escherichia Coli ◽  
Mutation Rates ◽  
Evolutionary Adaptation

scholarly journals EVOLUTIONARY ADAPTATION TO ENVIRONMENTAL pH IN EXPERIMENTAL LINEAGES OF ESCHERICHIA COLI

Evolution ◽  
2007 ◽  
Vol 61 (7) ◽  
pp. 1725-1734 ◽  
Author(s):  
Bradley S. Hughes ◽  
Alistair J. Cullum ◽  
Albert F. Bennett
Keyword(s):  
Escherichia Coli ◽  
Evolutionary Adaptation

scholarly journals Obligate mutualistic cooperation limits evolvability

2020 ◽  
Author(s):  
Benedikt Pauli ◽  
Leonardo Oña ◽  
Marita Hermann ◽  
Christian Kost
Keyword(s):  
Escherichia Coli ◽  
Amino Acids ◽  
Amino Acid ◽  
Environmental Change ◽  
Selection Experiment ◽  
Evolutionary Adaptation ◽  
Darwinian Fitness ◽  
Mutualistic Interaction ◽  
Interaction Partners ◽  
Outstanding Question

AbstractCooperative mutualisms are widespread in nature and play fundamental roles in many ecosystems. Due to the often obligate nature of these interactions, the Darwinian fitness of the participating individuals is not only determined by the information encoded in their own genomes, but also the traits and capabilities of their corresponding interaction partners. Thus, a major outstanding question is how obligate cooperative mutualisms affect the ability of organisms to respond to environmental change with evolutionary adaptation. Here we address this issue using a mutualistic cooperation between two auxotrophic genotypes of Escherichia coli that reciprocally exchange costly amino acids. Amino acid-supplemented monocultures and unsupplemented cocultures were exposed to stepwise increasing concentrations of different antibiotics. This selection experiment revealed that metabolically interdependent bacteria were generally less able to adapt to environmental stress than autonomously growing strains. Moreover, obligate cooperative mutualists frequently regained metabolic autonomy, thus resulting in a collapse of the mutualistic interaction. Together, our results identify a limited evolvability as a significant evolutionary cost that individuals have to pay when entering into an obligate mutualistic cooperation.

scholarly journals Escherichia coli robustly expresses ATP synthase at growth rate maximizing concentrations

2021 ◽  
Author(s):  
Iraes Rabbers ◽  
Frank J Bruggeman
Keyword(s):  
Escherichia Coli ◽  
Growth Rate ◽  
Protein Expression ◽  
Genetic Variants ◽  
Evolutionary Adaptation ◽  
Wild Type ◽  
Short Term ◽  
E Coli ◽  
Fitness Maximization

AbstractImproved protein expression is an important evolutionary adaptation of bacteria. A key question is whether evolution has led to optimal protein expression that maximizes immediate growth rate (short-term fitness) across conditions. Alternatively, fitter genetic variants could display suboptimal short-term fitness, because they cannot do better or because they strive for long-term fitness maximization by, for instance, anticipating future conditions. To answer this question, we focus on the ATP-producing enzyme F1F0 H+-ATPase, which is an abundant enzyme and ubiquitously expressed across conditions. We tested the optimality of H+-ATPase expression in Escherichia coli across 27 different nutrient conditions. In all tested conditions, wild-type E. coli expresses its H+- ATPase remarkably close to optimal concentrations that maximize immediate growth rate. This work indicates that bacteria can achieve robust optimal protein expression for immediate growth- rate.

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