Department of Biology, Ehime University, 2-5 Matsuyama, Ehime, 790-8577, Japan.
Biosystems. 2021 Jul;205:104427. doi: 10.1016/j.biosystems.2021.104427. Epub 2021 Apr 20.
Ecosystems generate selective environments and function as sources of various metabolic systems for symbiogenesis. In this study, we have explored how symbiogenesis occurs in the living world, from a holistic perspective, by observing a long-term experimental culture of an ecosystem model (CET microcosm) and using related findings in laboratory and field studies of endosymbiosis between auto- (photo-) and heterotrophic organisms. The results obtained suggest that symbiogenesis can occur in the mature stages of semi-closed ecosystems and lead to a new ecosystem-oriented perspective of symbiogenesis. Symbiogenesis is an aspect of ecosystem evolution in which whole ecosystem dynamics generate selective conditions operating on the component species, favoring symbiotic associations among some of them. The development of symbiotic associations then modifies the organization and material/energy flow structure of the ecosystem, which, in turn, modifies their selective environments.
生态系统产生选择性环境，并作为共生起源的各种代谢系统的来源。在这项研究中，我们从整体的角度，通过观察一个生态系统模型（CET 微宇宙）的长期实验培养，以及对自养（光）和异养生物之间的内共生的实验室和野外研究的相关发现，探索了共生起源是如何在生命世界中发生的。结果表明，共生起源可以在半封闭生态系统的成熟阶段发生，并导致一个新的以生态系统为导向的共生起源观点。共生起源是生态系统进化的一个方面，整个生态系统动力学在其中产生对组成物种起作用的选择性条件，有利于它们中的一些物种之间的共生关联。然后，共生关联的发展改变了生态系统的组织和物质/能量流结构，这反过来又改变了它们的选择性环境。
