Signatures of kin selection in a natural population of the bacteria Bacillus subtilis.

IF 4.3 3区 材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
ACS Applied Electronic Materials Pub Date : 2023-07-18 eCollection Date: 2023-10-01 DOI:10.1093/evlett/qrad029
Laurence J Belcher, Anna E Dewar, Chunhui Hao, Melanie Ghoul, Stuart A West
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引用次数: 0

Abstract

Laboratory experiments have suggested that bacteria perform a range of cooperative behaviors, which are favored because they are directed toward relatives (kin selection). However, there is a lack of evidence for cooperation and kin selection in natural bacterial populations. Molecular population genetics offers a promising method to study natural populations because the theory predicts that kin selection will lead to relaxed selection, which will result in increased polymorphism and divergence at cooperative genes. Examining a natural population of Bacillus subtilis, we found consistent evidence that putatively cooperative traits have higher polymorphism and greater divergence than putatively private traits expressed at the same rate. In addition, we were able to eliminate alternative explanations for these patterns and found more deleterious mutations in genes controlling putatively cooperative traits. Overall, our results suggest that cooperation is favored by kin selection, with an average relatedness of r = .79 between interacting individuals.

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枯草芽孢杆菌自然种群中亲属选择的特征。
实验室实验表明,细菌有一系列的合作行为,这是受欢迎的,因为它们是针对亲属的(亲属选择)。然而,在天然细菌种群中缺乏合作和亲属选择的证据。分子群体遗传学为研究自然群体提供了一种很有前途的方法,因为该理论预测,亲属选择将导致放松选择,这将导致合作基因的多态性和差异性增加。通过检查枯草芽孢杆菌的自然种群,我们发现了一致的证据,即假定的合作性状比假定的以相同速率表达的私人性状具有更高的多态性和更大的差异。此外,我们能够消除对这些模式的替代解释,并在控制假定合作性状的基因中发现了更有害的突变。总体而言,我们的研究结果表明,合作受到亲属选择的青睐,相互作用的个体之间的平均相关性为r=.79。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
7.20
自引率
4.30%
发文量
567
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