Microbial redox cycling enhances ecosystem thermodynamic efficiency and productivity,Ecology Letters

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Microbial redox cycling enhances ecosystem thermodynamic efficiency and productivity
Ecology Letters ( IF 7.6 ) Pub Date : 2023-07-17 , DOI: 10.1111/ele.14287
Mayumi Seto ₁ , Michio Kondoh ₂

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Microbial life in low-energy ecosystems relies on individual energy conservation, optimizing energy use in response to interspecific competition and mutualistic interspecific syntrophy. Our study proposes a novel community-level strategy for increasing energy use efficiency. By utilizing an oxidation–reduction (redox) reaction network model that represents microbial redox metabolic interactions, we investigated multiple species-level competition and cooperation within the network. Our results suggest that microbial functional diversity allows for metabolic handoffs, which in turn leads to increased energy use efficiency. Furthermore, the mutualistic division of labour and the resulting complexity of redox pathways actively drive material cycling, further promoting energy exploitation. Our findings reveal the potential of self-organized ecological interactions to develop efficient energy utilization strategies, with important implications for microbial ecosystem functioning and the co-evolution of life and Earth.

中文翻译：

微生物氧化还原循环提高生态系统热力学效率和生产力

低能量生态系统中的微生物生命依赖于个体能量守恒，优化能量利用以响应种间竞争和互惠种间共养。我们的研究提出了一种提高能源利用效率的新颖的社区级战略。通过利用代表微生物氧化还原代谢相互作用的氧化还原（氧化还原）反应网络模型，我们研究了网络内多个物种水平的竞争与合作。我们的结果表明，微生物功能多样性允许代谢切换，从而提高能量利用效率。此外，互惠分工和由此产生的氧化还原途径的复杂性积极推动了物质循环，进一步促进了能源开发。我们的研究结果揭示了自组织生态相互作用在开发高效能源利用策略方面的潜力，对微生物生态系统功能以及生命与地球的共同进化具有重要意义。

更新日期：2023-07-17

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