自主性的演变从两个合作的专家在波动的环境中自主
Xiaoli Chen1,2, Miaoxiao Wang3,4, Laipeng Luo1
1College of Engineering, Peking University, Beijing 100871, China.
概括
合作性微生物通过水平基因转移 (HGT) 修复被删除的基因进化了自主性. 环境波动推动了这种转变,使专家能够恢复新陈代谢功能.
科学领域:
- 微生物生态学 微生物生态学
- 进化生物学是进化的生物学.
- 系统生物学 系统生物学
背景情况:
- 生物可以自主或合作地执行生存任务.
- 自主与合作之间的进化转换是不清楚的.
- 合作专家可以通过基因交换修复基因来恢复自主.
研究的目的:
- 研究合作社专家如何发展自主.
- 确定合作专家是否可以通过水平基因转移 (HGT) 来修复被删除的基因.
- 确定有利于合作自主发展的条件.
主要方法:
- 在实验中演化出了一个由两位乙烯降解专家组成的互惠微生物联盟.
- 利用波动的环境 (纳夫他林和酸盐) 来替代选择性压力.
- 运用数学建模来量化进化动态.
主要成果:
- 自主基因型从合作专家进化而主导了社区.
- 专家之间的水平基因转移 (HGT) 推动了自主性的演变.
- 波动的环境,在甲烯和酸盐之间交替,对于这种过渡至关重要.
- 纳夫他林有利于自治的基因型; 酸盐促进了专业的共存和HGT.
结论:
- 合作专家可以通过修复被删除的基因通过HGT.恢复代谢自主.
- 环境波动对于促进合作自主演变至关重要.
- 该研究阐明了合作生活方式与自主生活方式之间的进化过渡机制.
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