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Removal of Exogenous Materials from the Outer Portion of Frozen Cores to Investigate the Ancient Biological Communities Harbored Inside
Published on: July 3, 2016
Frequent recombination in a saltern population of Halorubrum
R Thane Papke1, Jeremy E Koenig, Francísco Rodríguez-Valera
1Department of Biochemistry and Molecular Biology, Dalhousie University, 5859 University Avenue, Halifax, Nova Scotia B3H 4H7, Canada. rpapke@dal.ca
Abstract:
Sex and recombination are driving forces in the evolution of eukaryotes. Homologous recombination is known to be the dominant process in the divergence of many bacterial species. For Archaea, the only direct evidence bearing on the importance or natural occurrence of homologous recombination is anecdotal reports of mosaicism from comparative genomic studies. Genetic studies, however, reveal that recombination may play a significant role in generating diversity among members of at least one archaeal group, the haloarchaea. We used multi-locus sequence typing to demonstrate that haloarchaea exchange genetic information promiscuously, exhibiting a degree of linkage equilibrium approaching that of a sexual population.
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