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在 Bacillus subtilis 土壤分离物之间的Nonkin 相互作用限制了蜂群缺陷作弊者的传播

Katarina Belcijan Pandur¹, Barbara Kraigher¹, Ana Tomac¹

¹Department of Microbiology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia.

The ISME journal

|October 7, 2024

概括

亲属歧视有助于稳定细菌的合作,通过限制不合作作弊的传播. 这项研究表明,遇到非亲属群的细菌种群对剥削更有抵抗力,保持合作行为.

科学领域:

微生物生态学微生物生态学
进化生物学进化生物学
行为生态学行为生态学

背景情况:

合作行为在许多物种中是必不可少的,但容易受到非合作个体 ("作弊者") 的剥削.
亲属歧视,即区分和偏爱亲属的能力,是维持合作的拟议机制.
亲属歧视稳定合作的确切机制,尤其是在微生物系统中,尚未完全理解.

研究的目的:

调查亲属歧视在防止利用*Bacillus subtilis*中合作群体行为的作用.
为了确定与非亲属群的相互作用是否可以限制非生产作弊者的繁殖.
评估亲属与非亲属相遇对合作特征演变的影响.

主要方法:

利用 * Bacillus subtilis * 作为研究合作群在表面上的模型生物.
创造了表面活性剂分泌合作者和非分泌作弊者的混合种群.
在20个周期的实验进化中,这些种群经历了20个周期的实验进化,其中包括与亲属和非亲属群体的短暂接触.

主要成果:

最初的 1:1 混合合作者和作弊者导致合作迅速崩.
与非亲属群体的遭遇相比,与亲属群体的遭遇相比,与非亲属群体的遭遇相比,减少了非生产作弊者的比例.
暴露于非亲属群体的进化种群比暴露于亲属群体的种群更少显示出缺陷的群体表型.

结论:

亲属歧视相互作用阻碍了在相邻的细菌群体中作弊的传播.
这些依赖于亲属关系的相互作用在稳定微生物种群进化的合作行为中起着重要作用.
这些发现支持了这样一个假设:亲属识别机制对于维持社会合作至关重要.

关键词:

这种细菌是 Bacillus subtilis.欺骗者作弊者欺骗者作弊者合作合作合作合作实验进化的实验进化.亲属歧视亲属歧视公共货物是公共货物.蜂拥而至的蜂拥而至的

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