The role of recognition error in the stability of green-beard genes.

IF 4.3 3区 材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Jibeom Choi, Seoeun Lee, Hyun Kim, Junpyo Park
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Abstract

The empirical examples of the green-beard genes, once a conundrum of evolutionary biology, are accumulating, while theoretical analyses of this topic are occasional compared to those concerning (narrow-sense) kin selection. In particular, the recognition error of the green-beard effect that the cooperator fails to accurately recognize the other cooperators or defectors is readily found in numerous green-beard genes. To our knowledge, however, no model up to date has taken that effect into account. In this article, we investigated the effect of recognition error on the fitness of the green-beard gene. By employing theories of evolutionary games, our mathematical model predicts that the fitness of the green-beard gene is frequency dependent (frequency of the green-beard gene), which was corroborated by experiments performed with yeast FLO1. The experiment also shows that the cells with the green-beard gene (FLO1) are sturdier under severe stress. We conclude that the low recognition error among the cooperators, the higher reward of cooperation, and the higher cost of defection confer an advantage to the green-beard gene under certain conditions, confirmed by numerical simulation as well. Interestingly, we expect that the recognition error to the defectors may promote the cooperator fitness if the cooperator frequency is low and mutual defection is detrimental. Our ternary approach of mathematical analysis, experiments, and simulation lays the groundwork of the standard model for the green-beard gene that can be generalized to other species.

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识别错误在绿胡子基因稳定性中的作用。
曾经是进化生物学难题的绿胡子基因的实证例子正在积累,而对这一主题的理论分析偶尔会与那些有关(狭义的)亲缘选择的分析进行比较。特别是绿胡子效应的识别错误,即合作者不能准确识别其他合作者或叛逃者,在众多的绿胡子基因中很容易发现。然而,据我们所知,迄今为止还没有模型考虑到这种影响。本文研究了识别误差对绿胡子基因适应度的影响。通过运用进化博弈理论,我们的数学模型预测了绿胡子基因的适应度是频率依赖的(绿胡子基因的频率),这一点在酵母FLO1实验中得到了证实。实验还表明,具有绿须基因(FLO1)的细胞在严重的压力下更坚固。结果表明,在一定条件下,绿胡子基因在低识别误差、高合作回报和高背叛代价的条件下具有优势,数值模拟结果也证实了这一点。有趣的是,我们预期在合作者频率较低且相互背叛是有害的情况下,对叛逃者的识别错误可能会促进合作者的适应度。我们的数学分析、实验和模拟的三元方法为绿胡子基因的标准模型奠定了基础,该模型可以推广到其他物种。
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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