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首页> 外文期刊>Plant and Soil >Redox potential (Eh) and pH as drivers of soil/plant/microorganism systems: a transdisciplinary overview pointing to integrative opportunities for agronomy
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Redox potential (Eh) and pH as drivers of soil/plant/microorganism systems: a transdisciplinary overview pointing to integrative opportunities for agronomy

机译：氧化还原电势（Eh）和pH值作为土壤/植物/微生物系统的驱动力：跨学科概述，指出农业综合机会

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摘要

Background: Oxidation-reduction and acid-base reactions are essential for the maintenance of all living organisms. However, redox potential (Eh) has received little attention in agronomy, unlike pH, which is regarded as a master variable. Agronomists are probably depriving themselves of a key factor in crop and soil science which could be a useful integrative tool. Scope: This paper reviews the existing literature on Eh in various disciplines connected to agronomy, whether associated or not with pH, and then integrates this knowledge within a composite framework. Conclusions: This transdisciplinary review offers evidence that Eh and pH are respectively and jointly major drivers of soil/plant/microorganism systems. Information on the roles of Eh and pH in plant and microorganism physiology and in soil genesis converges to form an operational framework for further studies of soil/plant/microorganism functioning. This framework is based on the hypothesis that plants physiologically function within a specific internal Eh-pH range and that, along with microorganisms, they alter Eh and pH in the rhizosphere to ensure homeostasis at the cell level. This new perspective could help in bridging several disciplines related to agronomy, and across micro and macro-scales. It should help to improve cropping systems design and management, in conventional, organic, and conservation agriculture.
机译：背景：氧化还原和酸碱反应对于维持所有活生物体至关重要。然而，与被视为主要变量的pH值不同，氧化还原电势（Eh）在农学上很少受到关注。农学家可能正在丧失作物和土壤科学的关键因素，而这可能是有用的综合工具。范围：本文回顾了与农学相关的各个学科中有关Eh的现有文献，无论是否与pH值相关，然后将这些知识整合到一个综合框架中。结论：这项跨学科的综述提供了证据，证明Eh和pH分别是土壤/植物/微生物系统的共同驱动力。有关Eh和pH在植物和微生物生理学以及土壤发生中的作用的信息融合在一起，为进一步研究土壤/植物/微生物功能提供了可操作的框架。该框架基于以下假设：植物在特定的内部Eh-pH范围内具有生理功能，并且与微生物一起改变根际中的Eh和pH，以确保细胞水平的体内平衡。这种新观点可能有助于在微观和宏观范围内架起与农学有关的若干学科。它应有助于改善常规农业，有机农业和保护性农业的耕作系统设计和管理。

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