Experimental Evolution of Interference Competition.

Experimental Evolution of Interference Competition.
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DOI:
10.3389/fmicb.2021.613450
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发表时间:
2021
影响因子:
5.2
通讯作者:
Schoustra SE
Schoustra SE
中科院分区:
生物学2区
文献类型:
--
作者:
Gorter FA;Tabares-Mafla C;Kassen R;Schoustra SE

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干扰竞争的重要性,即个体通过产生毒素等拮抗性状进行竞争,早已被生态学家所认识,但对这些类型的相互作用如何演变的理解仍然有限。毒素生产被认为是有益的,当与竞争对手竞争。在这里,我们探讨了拮抗作用是否可以通过长期选择的毒素(绿脓菌素)生产菌株铜绿假单胞菌PAO1在存在(或不存在)的三个临床分离株相同的物种(绿脓杆菌)超过10个系列转移。我们发现,在没有受体的情况下,抑制会减少。在受体存在的情况下,拮抗作用根据所使用的受体而演变为不同的。我们的研究表明,毒素的干扰竞争的演变可以减少或增加,实验证明了这种类型的相互作用的物种相互作用的演变的重要性。
The importance of interference competition, where individuals compete through antagonistic traits such as the production of toxins, has long been recognized by ecologists, yet understanding how these types of interactions evolve remains limited. Toxin production is thought to be beneficial when competing with a competitor. Here, we explore if antagonism can evolve by long-term selection of the toxin (pyocin) producing strain Pseudomonas aeruginosa PAO1 in the presence (or absence) of one of three clinical isolates of the same species (Recipient) over ten serial transfers. We find that inhibition decreases in the absence of a recipient. In the presence of a recipient, antagonism evolved to be different depending on the recipient used. Our study shows that the evolution of interference competition by toxins can decrease or increase, experimentally demonstrating the importance of this type of interaction for the evolution of species interactions.
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