Conflicting selection alters the trajectory of molecular evolution in a tripartite bacteria-plasmid-phage interaction.
Conflicting selection alters the trajectory of molecular evolution in a tripartite bacteria-plasmid-phage interaction.
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DOI:
10.1111/mec.14080
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发表时间:
2017-05
影响因子:
4.9
通讯作者:
Brockhurst MA
中科院分区:
文献类型:
--
作者:
Harrison E;Hall JPJ;Paterson S;Spiers AJ;Brockhurst MA
Bacteria engage in a complex network of ecological interactions, which includes mobile genetic elements (MGEs) such as phages and plasmids. These elements play a key role in microbial communities as vectors of horizontal gene transfer but can also be important sources of selection for their bacterial hosts. In natural communities, bacteria are likely to encounter multiple MGEs simultaneously and conflicting selection among MGEs could alter the bacterial evolutionary response to each MGE. Here, we test the effect of interactions with multiple MGEs on bacterial molecular evolution in the tripartite interaction between the bacterium, Pseudomonas fluorescens, the lytic bacteriophage, SBW25φ2, and conjugative plasmid, pQBR103, using genome sequencing of experimentally evolved bacteria. We show that individually, both plasmids and phages impose selection leading to bacterial evolutionary responses that are distinct from bacterial populations evolving without MGEs, but that together, plasmids and phages impose conflicting selection on bacteria, constraining the evolutionary responses observed in pairwise interactions. Our findings highlight the likely difficulties of predicting evolutionary responses to multiple selective pressures from the observed evolutionary responses to each selective pressure alone. Understanding evolution in complex microbial communities comprising many species and MGEs will require that we go beyond studies of pairwise interactions.
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影响因子:
11.3
作者:
Koskella B;Brockhurst MA
通讯作者:
Brockhurst MA
影响因子:
4.8
作者:
Mulrooney, EF;Poon, KKH;Lam, JS
通讯作者:
Lam, JS
DOI:
10.1007/978-1-4614-3567-9_16
发表时间:
2012-01-01
期刊:
EVOLUTIONARY SYSTEMS BIOLOGY
影响因子:
--
作者:
Buckling, Angus;Brockhurst, Michael
通讯作者:
Brockhurst, Michael
影响因子:
3.7
作者:
Dougherty, Kevin;Smith, Brian A.;Baltrus, David A.
通讯作者:
Baltrus, David A.
影响因子:
4.4
作者:
Perez-Mendoza, Daniel;de la Cruz, Fernando
通讯作者:
de la Cruz, Fernando