title: Genome Surfing As Driver of Microbial Genomic Diversity.
abstract: Historical changes in population size, such as those caused by demographic range expansions, can produce nonadaptive changes in genomic diversity through mechanisms such as gene surfing. We propose that demographic range expansion of a microbial population capable of horizontal gene exchange can result in genome surfing, a mechanism that can cause widespread increase in the pan-genome frequency of genes acquired by horizontal gene exchange. We explain that patterns of genetic diversity within Streptomyces are consistent with genome surfing, and we describe several predictions for testing this hypothesis both in Streptomyces and in other microorganisms.
authors.affiliation: School of Integrative Plant Science, Cornell University, Ithaca, NY 14850 USA.
authors.forename: Mallory J
authors.initials: MJ
authors.lastname: Choudoir
authors.affiliation: School of Integrative Plant Science, Cornell University, Ithaca, NY 14850 USA.
authors.forename: Kevin
authors.initials: K
authors.lastname: Panke-Buisse
authors.affiliation: Department of Molecular, Cellular and Biomedical Sciences, University of New Hampshire, Durham NH 03824, USA.
authors.forename: Cheryl P
authors.initials: CP
authors.lastname: Andam
authors.affiliation: School of Integrative Plant Science, Cornell University, Ithaca, NY 14850 USA. Electronic address: dhb28@cornell.edu.
authors.forename: Daniel H
authors.initials: DH
authors.lastname: Buckley
mesh_terms: D022761:Gene Transfer, Horizontal; D014644:Genetic Variation; D064349:Genome, Microbial; D023281:Genomics; D008957:Models, Genetic; D010802:Phylogeny; D013302:Streptomyces / Q000235:genetics