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  Comprehensive mutation identification in an evolved bacterial cooperator and its cheating ancestor

Velicer, G., Raddatz, G., Keller, H., Deiss, S., Lanz, C., Dinkelacker, I., et al. (2006). Comprehensive mutation identification in an evolved bacterial cooperator and its cheating ancestor. Proceedings of the National Academy of Sciences of the United States of America, 103(21), 8107-8112. doi:10.1073/pnas.0510740103.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-841B-9 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-841C-8
Genre: Journal Article

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 Creators:
Velicer, GJ1, Author
Raddatz, G2, 3, Author              
Keller, H1, Author
Deiss, S1, Author
Lanz, C1, Author
Dinkelacker, I1, Author
Schuster, SC, Author
Affiliations:
1Max Planck Institute for Developmental Biology, Max Planck Society, Max-Planck-Ring 5, 72076 Tübingen, DE, ou_2421691              
2Former Department MRZ, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_2528700              
3Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: Precise characterization of the mutation histories of evolutionary lineages is crucial for understanding the evolutionary process, yet mutation identification has been constrained by traditional techniques. We sought to identify all accumulated mutations in an experimentally evolved lineage of the cooperative bacterium Myxococcus xanthus, which constructs fruiting bodies by a process of social multicellular development in response to starvation. This lineage had undergone two major transitions in social phenotype: from an ancestral cooperator to a socially defective cheater, and from the cheater to a competitively dominant cooperator that re-evolved social and developmental proficiency. The 9.14-Mb genome of the evolved, dominant cooperator (strain “PX”) was sequenced to ≈19-fold coverage by using recent “sequencing-by-synthesis” technology and partially sequenced (≈45%) by using capillary technology. The resulting data revealed 15 single-nucleotide mutations relative to the laboratory ancestor of PX after the two phases of experimental evolution but no evidence of duplications, transpositions, or multiple-base deletions. No mutations were identified by capillary sequencing beyond those found by pyrosequencing, resulting in a high probability that all mutations were discovered. Seven errors in the reference strain previously sequenced by the Sanger approach were revealed, as were five mutational differences between two distinct laboratory stocks of the reference strain. A single mutation responsible for the restoration of development in strain PX was identified, whereas 14 mutations occurred during the prior phase of experimental evolution. These results provide insight into the genetic basis of two large adaptive transitions in a social bacterium.

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 Dates: 2006-05
 Publication Status: Published in print
 Pages: -
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 Rev. Method: -
 Identifiers: DOI: 10.1073/pnas.0510740103
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Title: Proceedings of the National Academy of Sciences of the United States of America
  Other : Proc. Acad. Sci. USA
  Other : Proc. Acad. Sci. U.S.A.
  Other : Proceedings of the National Academy of Sciences of the USA
  Abbreviation : PNAS
Source Genre: Journal
 Creator(s):
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Publ. Info: Washington, D.C. : National Academy of Sciences
Pages: - Volume / Issue: 103 (21) Sequence Number: - Start / End Page: 8107 - 8112 Identifier: ISSN: 0027-8424
CoNE: https://pure.mpg.de/cone/journals/resource/954925427230