The evolution of biogeochemical recycling by persistence-based selection
The evolution of biogeochemical recycling by persistence-based selection
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DOI：
10.1038/s43247-022-00371-3
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发表时间：
2022-03-04
影响因子：
7.9
通讯作者：
Lenton，Timothy M.
中科院分区：
文献类型：
--
作者：
Boyle，Richard A.;Lenton，Timothy M.
达尔文的进化论比地球系统内的反馈过程在更有限的尺度上运作，排除了自然选择所青睐的生物体水平特征与这些特征对地球长期平均可居住性的影响之间的任何系统关系的发展。“这是一首歌而不是歌手”理论提出了对自然选择的扩展理解，包括非复制实体的差异持久性，可能允许对地球化学循环的准达尔文理解。在这里，我们使用一个简单的随机模型来演示如何持久性选择的形式调用“它的歌曲，而不是歌手”可以稳定一个通用的营养循环，尽管它依赖于基因型相对较低的生物体水平的健身。我们提出了一个进化轨迹，合理地代表了前寒武纪地球化学循环的各个方面，包括基于持久性的选择，通过非生物边界条件的波动和强烈的遗传漂变进行回收。我们说明了如何自我永存的生命环境相关模式，而不是特定的状态值，可能有助于经验区分“这是一首歌，而不是歌手”从传统的地球系统反馈。
Darwinian evolution operates at more restricted scales than the feedback processes within the Earth system, precluding the development of any systematic relationship between the organism-level traits favored by natural selection and the impact of these traits upon Earth’s long-term average habitability for life. “It’s-the-song-not-the-singer” theory proposes an extended understanding of natural selection to encompass differential persistence of non-replicating entities, potentially allowing for a quasi-Darwinian understanding of biogeochemical cycles. Here we use a simple stochastic model to demonstrate how persistence selection of the form invoked by “It’s-the-song-not-the-singer” can stabilize a generic nutrient recycling loop, despite its dependence upon genotypes with relatively low organism-level fitness. We present an evolutionary trajectory plausibly representative of aspects of Precambrian biogeochemical cycles, involving persistence-based selection for recycling via fluctuations in abiotic boundary conditions and strong genetic drift. We illustrate how self-perpetuating life-environment correlation patterns, as opposed to specific state-values, may help empirically distinguish “It’s-the-song-not-the-singer” from conventional Earth-system feedbacks.