Convergence of Campylobacter Species: Implications for Bacterial Evolution

by: Samuel K Sheppard, Noel D Mccarthy, Daniel Falush, Martin C Maiden

Science, Vol. 320, No. 5873. (11 April 2008), pp. 237-239.

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Abstract

The nature of species boundaries in bacteria remains controversial. In particular, the mechanisms of bacterial speciation and maintenance in the face of frequent genetic exchange are poorly understood. Here, we report patterns of genetic exchange that show two closely related zoonotic pathogenic species, Campylobacter jejuni and Campylobacter coli, are converging as a consequence of recent changes in gene flow. Population expansion into a novel ecological niche generated by human activity is the most probable explanation for the increase in genetic exchange between these species. Bacterial speciation can therefore occur by mechanisms analogous to those seen in metazoans, where genetic diversification and incipient speciation caused by ecological factors have been reported in several genera. 10.1126/science.1155532

@article{citeulike:2653632, abstract = {The nature of species boundaries in bacteria remains controversial. In particular, the mechanisms of bacterial speciation and maintenance in the face of frequent genetic exchange are poorly understood. Here, we report patterns of genetic exchange that show two closely related zoonotic pathogenic species, Campylobacter jejuni and Campylobacter coli, are converging as a consequence of recent changes in gene flow. Population expansion into a novel ecological niche generated by human activity is the most probable explanation for the increase in genetic exchange between these species. Bacterial speciation can therefore occur by mechanisms analogous to those seen in metazoans, where genetic diversification and incipient speciation caused by ecological factors have been reported in several genera. 10.1126/science.1155532}, author = {Sheppard, Samuel K. and Mccarthy, Noel D. and Falush, Daniel and Maiden, Martin C. }, citeulike-article-id = {2653632}, doi = {10.1126/science.1155532}, journal = {Science}, keywords = {b2900}, month = {April}, number = {5873}, pages = {237--239}, posted-at = {2008-04-13 18:14:31}, priority = {2}, title = {Convergence of Campylobacter Species: Implications for Bacterial Evolution}, url = {http://dx.doi.org/10.1126/science.1155532}, volume = {320}, year = {2008} }

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TY - JOUR ID - citeulike:2653632 L3 - citeulike-article-id:2653632 TI - Convergence of Campylobacter Species: Implications for Bacterial Evolution JF - Science VL - 320 IS - 5873 SP - 237 EP - 239 N2 - The nature of species boundaries in bacteria remains controversial. In particular, the mechanisms of bacterial speciation and maintenance in the face of frequent genetic exchange are poorly understood. Here, we report patterns of genetic exchange that show two closely related zoonotic pathogenic species, Campylobacter jejuni and Campylobacter coli, are converging as a consequence of recent changes in gene flow. Population expansion into a novel ecological niche generated by human activity is the most probable explanation for the increase in genetic exchange between these species. Bacterial speciation can therefore occur by mechanisms analogous to those seen in metazoans, where genetic diversification and incipient speciation caused by ecological factors have been reported in several genera. 10.1126/science.1155532 KW - b2900 AU - Sheppard, Samuel AU - Mccarthy, Noel AU - Falush, Daniel AU - Maiden, Martin PY - 2008/04/11/ UR - http://dx.doi.org/10.1126/science.1155532 ER -

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