Experimental social evolution with Myxococcus xanthus

@article{Velicer2004ExperimentalSE,
  title={Experimental social evolution with Myxococcus xanthus},
  author={Gregory J. Velicer and Kristina L. Stredwick},
  journal={Antonie van Leeuwenhoek},
  year={2004},
  volume={81},
  pages={155-164}
}
Genetically-based social behaviors are subject to evolutionary change in response to natural selection. Numerous microbial systems provide not only the opportunity to understand the genetic mechanisms underlying specific social interactions, but also to observe evolutionary changes in sociality over short time periods. Here we summarize experiments in which behaviors of the social bacterium Myxococcus xanthus changed extensively during evolutionary adaptation to two relatively asocial… Expand
2 Why Cooperate? The Ecology and Evolution of Myxobacteria
TLDR
The chapter describes some laboratory studies addressing the effects of abiotic variables on ecologically relevant phenotypes and the interactions of myxobacteria with prey species and how such interactions affect predator evolution. Expand
Current trends in myxobacteria research
TLDR
The present review discusses the structure, cytology, physiology, and ecology of myxobacteria, as well as their secondary metabolite production and social interactions. Expand
Evolution of cooperation and control of cheating in a social microbe
TLDR
It is shown that studying a microbe has yielded unique insights, particularly in understanding how social cheaters are controlled, and that D. discoideum is rapidly becoming a model system of choice for molecular studies of social evolution. Expand
Comparative Analysis of Myxococcus Predation on Soil Bacteria
TLDR
The broad prey range of the Myxococcus genus coupled with its ubiquity in the soil suggests that myxobacteria are likely to have very important ecological and evolutionary effects on many species of soil prokaryotes. Expand
Molecular Mechanisms of Signaling in Myxococcus xanthus Development.
TLDR
Several aspects of the molecular mechanisms of signaling in M. xanthus development, which includes mechanisms of kin selection, single-cell sensing of nutrient depletion and the stringent response, the production of and response to extracellular population cues, and the contribution of several two-component signaling systems regulating developmental transcriptional programs are explored. Expand
Hidden paths to endless forms most wonderful: Complexity of bacterial motility shapes diversification of latent phenotypes
TLDR
The results suggest that increases in the genetic and mechanistic complexity of behavior can increase the complexity of latent-phenotype evolution outcomes and illustrate that diversification manifested during evolution in one environment can be augmented greatly by diversification of latent phenotypes manifested later. Expand
Beyond society: the evolution of organismality
  • D. Queller, J. Strassmann
  • Biology, Medicine
  • Philosophical Transactions of the Royal Society B: Biological Sciences
  • 2009
TLDR
This survey suggests that many of the traits commonly used to define organisms are not essential, including physical contiguity, indivisibility, clonality or high relatedness, development from a single cell, short-term and long-term genetic cotransmission, germ–soma separation and membership in the same species. Expand
Predatory Interactions Between Myxobacteria and Their Prey
The myxobacteria are an order of abundant and virtually ubiquitous soil-dwelling Deltaproteobacteria. They initially attracted scientific attention in the nineteenth century for their ability toExpand
Metabolic differentiation in actively swarming Salmonella
TLDR
It is demonstrated that migrating swarmer cells of Salmonella are metabolically differentiated compared to the vegetative swimmer cells grown in the same nutrient environment. Expand
Antibiotic resistance and the evolution of group-beneficial traits. II: a metapopulation model.
TLDR
The results indicate that in a metapopulation with many groups, each of size N, the equilibrial frequency of producers decreases with group size, and theEquilibrial Frequency of producers increases as the minimum numbers of producers necessary to provide protection to non-producers increases. Expand
...
1
2
3
...

References

SHOWING 1-10 OF 70 REFERENCES
Loss of social behaviors by myxococcus xanthus during evolution in an unstructured habitat.
TLDR
Improved performance in the liquid selective regime among evolved lines was usually associated with significant reductions in all of the major social behaviors of M. xanthus, which is apparently detrimental to fitness under asocial growth conditions. Expand
Rescue of Social Motility Lost during Evolution of Myxococcus xanthus in an Asocial Environment
TLDR
Replicate populations of the social bacterium Myxococcus xanthus underwent extensive evolutionary adaptation to an asocial selective environment (liquid batch culture) and restoration of S motility in the evolved lines by genetic complementation with wild-type pil genes positively affected their fruiting body development and sporulation while negatively affecting their competitive fitness in the asocial regime. Expand
Developmental cheating in the social bacterium Myxococcus xanthus
TLDR
It is shown that social cheating exists even among prokaryotes, with clones from several evolved lines and two defined mutants exhibited cheating during development, being over-represented among resulting spores relative to their initial frequency in the mixture. Expand
Altruism and social cheating in the social amoeba Dictyostelium discoideum
TLDR
Microsatellite markers are used to show that different clones collected from a field population readily mix to form chimaeras, and half of the chimaeric mixtures show a clear cheater and victim. Expand
The evolution of bacterial transformation: sex with poor relations.
TLDR
Analytical and numerical methods are used to study the selection of transformation genes in populations undergoing deleterious mutation in bacteria, suggesting that the conditions necessary for the evolution of transformation are unlikely to be met, and thus that DNA uptake may have some function other than recombination of deleteriously mutations. Expand
The two motility systems of Myxococcus xanthus show different selective advantages on various surfaces.
  • W. Shi, D. Zusman
  • Biology, Medicine
  • Proceedings of the National Academy of Sciences of the United States of America
  • 1993
TLDR
The results suggest that dual motility systems enable the myxobacteria to adapt to a variety of physiological and ecological environments and show similarities in function to the dual Motility systems of flagellated bacteria such as Vibrio spp. Expand
The evolution of social behavior in microorganisms.
  • B. Crespi
  • Biology, Medicine
  • Trends in ecology & evolution
  • 2001
TLDR
These microorganisms should provide novel, tractable systems for the analysis of social evolution and the application of evolutionary and ecological theory to understanding their behavior will aid in developing better means to control the many pathogenic bacteria that use social interactions to affect humans. Expand
The population genetics of ecological specialization in evolving Escherichia coli populations
TLDR
This work analysed the decay of unused catabolic functions in 12 lines of Escherichia coli propagated on glucose for 20,000 generations and found that antagonistic pleiotropy appears more important than mutation accumulation for the Decay of unused dogmatic functions in these populations. Expand
Long‐term experimental evolution in Escherichia coli. V. Effects of recombination with immigrant genotypes on the rate of bacterial evolution
TLDR
The estimated recombination rate was too low to explain the observed rate of genetic change, either alone or in combination with hitchhiking effects, but the method for estimating fitness relative to a common competitor might have underestimated the rate of adaptive evolution in the treatment populations. Expand
Evolution of a bacteria/plasmid association
TLDR
The fitness of each combination of host and plasmid, with and without the culture history, was determined by competing it against a baseline strain, and results indicate adaptation by the host genome, but no plasmids adaptation. Expand
...
1
2
3
4
5
...