论文标题
空间结构支持益生元自催化化学生态系统的多样性
Spatial Structure Supports Diversity in Prebiotic Autocatalytic Chemical Ecosystems
论文作者
论文摘要
人们认为自催化在生命起源的最早阶段发挥了重要作用。自催化循环（AC）是一组反应，导致其组成化学物质的化学计量增加。当多个相互作用AC的反应在空间区域中活跃时，它们可以具有类似于生物生态系统中物种之间的相互作用。先前对自催化化学生态系统（ACE）的研究提出了积累复杂性的途径，例如生态继承以及竞争排斥等障碍。我们扩展了这个生态框架，以研究表面吸附，解吸和扩散对ACE生态学的影响。在空间环境中，将ACE模拟为基于粒子的随机反应扩散系统，包括开放的，二维反应 - 扩散系统和吸附性矿物质表面，这表明，空间结构可以通过i）通过i）允许其他相互排斥的ACS来增强ACE多样性，从而对新的AC特征进行选择。
Autocatalysis is thought to have played an important role in the earliest stages of the origin of life. An autocatalytic cycle (AC) is a set of reactions that results in stoichiometric increase in its constituent chemicals. When the reactions of multiple interacting ACs are active in a region of space, they can have interactions analogous to those between species in biological ecosystems. Prior studies of autocatalytic chemical ecosystems (ACEs) have suggested avenues for accumulating complexity, such as ecological succession, as well as obstacles such as competitive exclusion. We extend this ecological framework to investigate the effects of surface adsorption, desorption, and diffusion on ACE ecology. Simulating ACEs as particle-based stochastic reaction-diffusion systems in spatial environments-including open, two-dimensional reaction-diffusion systems and adsorptive mineral surfaces-we demonstrate that spatial structure can enhance ACE diversity by i) permitting otherwise mutually exclusive ACs to coexist and ii) subjecting new AC traits to selection.
