Interspecific competition can drive plasmid loss from a focal species in a microbial community.

Interspecific competition can drive plasmid loss from a focal species in a microbial community.
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DOI:
10.1038/s41396-023-01487-w
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发表时间:
2023-10
期刊:
影响因子:
11
通讯作者:
van Houte, Stineke
van Houte, Stineke
中科院分区:
环境科学与生态学1区
文献类型:
--
作者:
Suenderhauf, David;Kluemper, Uli;Gaze, William H.;Westra, Edze R.;van Houte, Stineke

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质粒是耐药性基因和毒力因子的主要传播者,因此预测和减少质粒在微生物群落中的传播至关重要。质粒携带的成本是可用于预测质粒生态命运的关键指标,目前还不清楚质粒成本是否受微生物群落中生长伙伴的影响。我们进行了竞争实验和跟踪质粒维护使用的模型系统组成的合成和稳定的五种社区和广泛的主机范围的质粒,工程进行不同的有效载荷。我们报告说,质粒携带的成本及其在焦点菌株中的长期维持都取决于竞争对手的存在,并且这些相互作用具有物种特异性。添加生长伴侣增加了高有效载荷质粒到焦点菌株的成本,因此,焦点菌种的质粒损失发生在较短的时间范围内。我们建议,在临床和自然环境中,可以利用种间竞争对质粒维持的不稳定作用来治愈焦点菌株中的质粒。
Plasmids are key disseminators of antimicrobial resistance genes and virulence factors, and it is therefore critical to predict and reduce plasmid spread within microbial communities. The cost of plasmid carriage is a key metric that can be used to predict plasmids’ ecological fate, and it is unclear whether plasmid costs are affected by growth partners in a microbial community. We carried out competition experiments and tracked plasmid maintenance using a model system consisting of a synthetic and stable five-species community and a broad host-range plasmid, engineered to carry different payloads. We report that both the cost of plasmid carriage and its long-term maintenance in a focal strain depended on the presence of competitors, and that these interactions were species specific. Addition of growth partners increased the cost of a high-payload plasmid to a focal strain, and accordingly, plasmid loss from the focal species occurred over a shorter time frame. We propose that the destabilising effect of interspecific competition on plasmid maintenance may be leveraged in clinical and natural environments to cure plasmids from focal strains.
宿主特异性的质粒演化解释了临床抗生素抗性质粒的变化扩散。
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