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  • 1
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    Antagonistic coevolution accelerates molecular evolution (2010)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2010-02-26
    Description: The Red Queen hypothesis proposes that coevolution of interacting species (such as hosts and parasites) should drive molecular evolution through continual natural selection for adaptation and counter-adaptation. Although the divergence observed at some host-resistance and parasite-infectivity genes is consistent with this, the long time periods typically required to study coevolution have so far prevented any direct empirical test. Here we show, using experimental populations of the bacterium Pseudomonas fluorescens SBW25 and its viral parasite, phage Phi2 (refs 10, 11), that the rate of molecular evolution in the phage was far higher when both bacterium and phage coevolved with each other than when phage evolved against a constant host genotype. Coevolution also resulted in far greater genetic divergence between replicate populations, which was correlated with the range of hosts that coevolved phage were able to infect. Consistent with this, the most rapidly evolving phage genes under coevolution were those involved in host infection. These results demonstrate, at both the genomic and phenotypic level, that antagonistic coevolution is a cause of rapid and divergent evolution, and is likely to be a major driver of evolutionary change within species.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3717453/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3717453/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Paterson, Steve -- Vogwill, Tom -- Buckling, Angus -- Benmayor, Rebecca -- Spiers, Andrew J -- Thomson, Nicholas R -- Quail, Mike -- Smith, Frances -- Walker, Danielle -- Libberton, Ben -- Fenton, Andrew -- Hall, Neil -- Brockhurst, Michael A -- 079643/Wellcome Trust/United Kingdom -- 098051/Wellcome Trust/United Kingdom -- Wellcome Trust/United Kingdom -- England -- Nature. 2010 Mar 11;464(7286):275-8. doi: 10.1038/nature08798. Epub 2010 Feb 24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Biological Sciences, Biosciences Building, University of Liverpool, Crown Street, Liverpool L69 7ZB, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20182425" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteriophages/genetics/*physiology ; *Biological Evolution ; *Evolution, Molecular ; Genetic Variation ; Molecular Sequence Data ; Phenotype ; Pseudomonas fluorescens/*genetics/*virology ; Selection, Genetic/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 2
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    Diversity and productivity peak at intermediate dispersal rate in evolving metacommunities (2008)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2008-03-14
    Description: Positive relationships between species diversity and productivity have been reported for a number of ecosystems. Theoretical and experimental studies have attempted to determine the mechanisms that generate this pattern over short timescales, but little attention has been given to the problem of understanding how diversity and productivity are linked over evolutionary timescales. Here, we investigate the role of dispersal in determining both diversity and productivity over evolutionary timescales, using experimental metacommunities of the bacterium Pseudomonas fluorescens assembled by divergent natural selection. We show that both regional diversity and productivity peak at an intermediate dispersal rate. Moreover, we demonstrate that these two patterns are linked: selection at intermediate rates of dispersal leads to high niche differentiation between genotypes, allowing greater coverage of the heterogeneous environment and a higher regional productivity. We argue that processes that operate over both ecological and evolutionary timescales should be jointly considered when attempting to understand the emergence of ecosystem-level properties such as diversity-function relationships.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Venail, P A -- MacLean, R C -- Bouvier, T -- Brockhurst, M A -- Hochberg, M E -- Mouquet, N -- England -- Nature. 2008 Mar 13;452(7184):210-4. doi: 10.1038/nature06554.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Universite Montpellier 2, CNRS, UMR 5554 Institut des Sciences de l'Evolution, CC065 Place Eugene Bataillon, Montpellier cedex 05, France. pvenail@univ-montp2.fr〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18337821" target="_blank"〉PubMed〈/a〉
    Keywords: *Biodiversity ; *Biological Evolution ; *Ecosystem ; Genotype ; Models, Biological ; Phenotype ; Pseudomonas fluorescens/*genetics/*physiology ; *Selection, Genetic
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 3
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    The Beagle in a bottle (2009)
    Nature Publishing Group (NPG)
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    Publication Date: 2009-02-13
    Description: Why infer evolution when you can watch it happen in real time? This is the basic premise of using populations of fast-replicating microorganisms in test tubes to study evolution. The approach, known as experimental evolution, has provided a way of testing many of the key hypotheses that arose from the modern evolutionary synthesis. However, details of the unnatural histories of microorganisms in test tubes can be extrapolated only so far. Potential future directions for the approach include studying microbial evolution for its own sake under the most natural conditions possible in the test tube, and testing some qualitative theories of genome evolution.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Buckling, Angus -- Craig Maclean, R -- Brockhurst, Michael A -- Colegrave, Nick -- England -- Nature. 2009 Feb 12;457(7231):824-9. doi: 10.1038/nature07892.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Zoology, University of Oxford, Oxford OX1 3PS, UK. angus.buckling@zoo.ox.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19212400" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacteria/genetics/growth & development/virology ; Bacterial Physiological Phenomena ; *Biodiversity ; *Biological Evolution ; *Selection, Genetic
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 4
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    Evolution. Sex, death, and the Red Queen (2011)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2011-07-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Brockhurst, Michael A -- New York, N.Y. -- Science. 2011 Jul 8;333(6039):166-7. doi: 10.1126/science.1209420.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Integrative Biology, University of Liverpool, Liverpool, UK. michael.brockhurst@liv.ac.uk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21737728" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Biological ; Animals ; *Biological Evolution ; Caenorhabditis elegans/*genetics/*microbiology/physiology ; Extinction, Biological ; Female ; Gene Frequency ; Hermaphroditic Organisms ; *Host-Pathogen Interactions ; Male ; Models, Animal ; *Reproduction ; *Selection, Genetic ; Self-Fertilization ; Serratia marcescens/genetics/*physiology ; *Sex
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
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    Evolution. Evolutionary resurrection of flagellar motility via rewiring of the nitrogen regulation system (2015)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2015-02-28
    Description: A central process in evolution is the recruitment of genes to regulatory networks. We engineered immotile strains of the bacterium Pseudomonas fluorescens that lack flagella due to deletion of the regulatory gene fleQ. Under strong selection for motility, these bacteria consistently regained flagella within 96 hours via a two-step evolutionary pathway. Step 1 mutations increase intracellular levels of phosphorylated NtrC, a distant homolog of FleQ, which begins to commandeer control of the fleQ regulon at the cost of disrupting nitrogen uptake and assimilation. Step 2 is a switch-of-function mutation that redirects NtrC away from nitrogen uptake and toward its novel function as a flagellar regulator. Our results demonstrate that natural selection can rapidly rewire regulatory networks in very few, repeatable mutational steps.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Taylor, Tiffany B -- Mulley, Geraldine -- Dills, Alexander H -- Alsohim, Abdullah S -- McGuffin, Liam J -- Studholme, David J -- Silby, Mark W -- Brockhurst, Michael A -- Johnson, Louise J -- Jackson, Robert W -- BB/J015350/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- BB/K003240/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- WT097835MF/Wellcome Trust/United Kingdom -- WT101650MA/Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2015 Feb 27;347(6225):1014-7. doi: 10.1126/science.1259145.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉School of Biological Sciences, University of Reading, Whiteknights, Reading RG6 6AJ, UK. ; Department of Biology, University of Massachusetts Dartmouth, 285 Old Westport Road, North Dartmouth, MA 02747, USA. ; School of Biological Sciences, University of Reading, Whiteknights, Reading RG6 6AJ, UK. Department of Plant Production and Protection, Qassim University, Qassim, P.O. Box 6622, Saudi Arabia. ; College of Life and Environmental Sciences, University of Exeter, Stocker Road, Exeter EX4 4QD, UK. ; Department of Biology, University of York, Wentworth Way, York YO10 5DD, UK. ; School of Biological Sciences, University of Reading, Whiteknights, Reading RG6 6AJ, UK. l.j.johnson@reading.ac.uk. ; School of Biological Sciences, University of Reading, Whiteknights, Reading RG6 6AJ, UK. The University of Akureyri, Borgir vid Nordurslod, IS-600 Akureyri, Iceland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/25722415" target="_blank"〉PubMed〈/a〉
    Keywords: Bacterial Proteins/genetics/*physiology ; *Biological Evolution ; Flagella/genetics/metabolism/*physiology ; Gene Deletion ; Gene Expression Regulation, Bacterial ; Gene Regulatory Networks ; Nitrogen/*metabolism ; Pseudomonas fluorescens/genetics/metabolism/*physiology ; Regulon ; *Selection, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 6
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    Temperate phages drive pathogen adaptive evolution [Evolution] (2016)
    National Academy of Sciences
    Details
    Publication Date: 2016-07-21
    Description: Temperate phages drive genomic diversification in bacterial pathogens. Phage-derived sequences are more common in pathogenic than nonpathogenic taxa and are associated with changes in pathogen virulence. High abundance and mobilization of temperate phages within hosts suggests that temperate phages could promote within-host evolution of bacterial pathogens. However, their role in...
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 7
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    Source-sink plasmid dynamics and gene mobility [Evolution] (2016)
    National Academy of Sciences
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    Publication Date: 2016-07-21
    Description: Horizontal gene transfer is a fundamental process in bacterial evolution that can accelerate adaptation via the sharing of genes between lineages. Conjugative plasmids are the principal genetic elements mediating the horizontal transfer of genes, both within and between bacterial species. In some species, plasmids are unstable and likely to be...
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 8
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    Metabolism in a novel symbiosis (2016)
    Royal Society
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    Publication Date: 2016-03-25
    Description: Ancient evolutionary events are difficult to study because their current products are derived forms altered by millions of years of adaptation. The primary endosymbiotic event formed the first photosynthetic eukaryote resulting in both plants and algae, with vast consequences for life on Earth. The evolutionary time that passed since this event means the dominant mechanisms and changes that were required are obscured. Synthetic symbioses such as the novel interaction between Paramecium bursaria and the cyanobacterium Synechocystis PC6803, recently established in the laboratory, permit a unique window on the possible early trajectories of this critical evolutionary event. Here, we apply metabolic modelling, using flux balance analysis (FBA), to predict the metabolic adaptations necessary for this previously free-living symbiont to transition to the endosymbiotic niche. By enforcing reciprocal nutrient trading, we are able to predict the most efficient exchange nutrients for both host and symbiont. During the transition from free-living to obligate symbiosis, it is likely that the trading parameters will change over time, which leads in our model to discontinuous changes in the preferred exchange nutrients. Our results show the applicability of FBA modelling to ancient evolutionary transitions driven by metabolic exchanges, and predict how newly established endosymbioses, governed by conflict, will differ from a well-developed one that has reached a mutual-benefit state.
    Keywords: computational biology, evolution
    Electronic ISSN: 2054-5703
    Topics: Natural Sciences in General
    Published by Royal Society
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  • 9
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    Kin selection and the evolution of virulence (2008)
    Springer Nature
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    Publication Date: 2008-01-23
    Print ISSN: 0018-067X
    Electronic ISSN: 1365-2540
    Topics: Biology
    Published by Springer Nature
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  • 10
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    Diversity and productivity peak at intermediate dispersal rate in evolving metacommunities (2008)
    Springer Nature
    Details
    Publication Date: 2008-03-01
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Springer Nature
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