Intracellular pH and its Regulation

Smith, F. A.; Raven, John A.

doi:10.1146/annurev.pp.30.060179.001445

Cited by 587 publications

(320 citation statements)

References 72 publications

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“…Redox potential and pH in plant cell and physiology: the ignored Eh-pH interaction Cell pH, regarded as the master variable in plant physiology, has been extensively studied and reviewed (Kurkdjian and Guern 1989;Rengel 2002;Smith and Raven 1979). Hence, it is not reviewed in this paper.…”

Section: Redox Homeostasismentioning

confidence: 99%

“…Reactions in the cytosol are exquisitely sensitive to changes in pH (Taiz 1992). pH regulation involves very complex processes in interaction with each other (Felle 1988;Rengel 2002;Sakano 1998;Smith and Raven 1979). Cytosolic pH can be regulated by pumping massive amounts of protons out of the cytosol into the lumen of the vacuole, in which pH varies according to plant species (Smith and Raven 1979;Taiz 1992).…”

Section: Redox Homeostasismentioning

confidence: 99%

“…pH regulation involves very complex processes in interaction with each other (Felle 1988;Rengel 2002;Sakano 1998;Smith and Raven 1979). Cytosolic pH can be regulated by pumping massive amounts of protons out of the cytosol into the lumen of the vacuole, in which pH varies according to plant species (Smith and Raven 1979;Taiz 1992). Among the processes of pH regulation, Smith and Raven (1979) emphasize excretion of excess protons or hydroxyl ions to the root medium.…”

Section: Redox Homeostasismentioning

confidence: 99%

“…Cytosolic pH can be regulated by pumping massive amounts of protons out of the cytosol into the lumen of the vacuole, in which pH varies according to plant species (Smith and Raven 1979;Taiz 1992). Among the processes of pH regulation, Smith and Raven (1979) emphasize excretion of excess protons or hydroxyl ions to the root medium. As with Eh, pH-dependent signals regulate physiological processes as, for instance, root water transport during anoxic stress (Tournaire-Roux et al 2003).…”

Section: Redox Homeostasismentioning

confidence: 99%

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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

2012

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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.

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Section: Redox Homeostasismentioning

confidence: 99%

Section: Redox Homeostasismentioning

confidence: 99%

Section: Redox Homeostasismentioning

confidence: 99%

Section: Redox Homeostasismentioning

confidence: 99%

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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

2012

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“…It is possible that synthesis of salts of C4 acids, where present, has another role. This might be osmotic, or even to do with pH regulation (Smith and Raven, 1979).…”

Section: C4 Photosynthesis In Aquatic Plants?mentioning

confidence: 99%

PHOTOSYNTHESIS BY AQUATIC PLANTS: EFFECTS OF UNSTIRRED LAYERS IN RELATION TO ASSIMILATION OF CO₂ AND HCO₃⁻AND TO CARBON ISOTOPIC DISCRIMINATION

1980

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Summary We review and reassess experimental evidence which indicates that the unstirred layers of solution bathing aquatic plant cells or organs represent a major factor limiting their rate of photosynthesis under natural conditions. Unstirred layers may also limit membrane transport of HCO3− where this occurs. Some authors have suggested that aquatic plants carry out C4photosynthesis and cite in support measurements of discrimination between 13C and 12C. We propose that this discrimination can also be a manifestation of the presence of unstirred layers or membrane transport or both.

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Mitochondrial Regulation and Signalling in the Photosynthetic Cell

Finkemeier

Schwarzländer

2017

Annual Plant Reviews, Volume 50

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Intracellular pH and its Regulation

Cited by 587 publications

References 72 publications

Redox potential (Eh) and pH as drivers of soil/plant/microorganism systems: a transdisciplinary overview pointing to integrative opportunities for agronomy

Redox potential (Eh) and pH as drivers of soil/plant/microorganism systems: a transdisciplinary overview pointing to integrative opportunities for agronomy

PHOTOSYNTHESIS BY AQUATIC PLANTS: EFFECTS OF UNSTIRRED LAYERS IN RELATION TO ASSIMILATION OF CO₂ AND HCO₃⁻AND TO CARBON ISOTOPIC DISCRIMINATION

Mitochondrial Regulation and Signalling in the Photosynthetic Cell

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Intracellular pH and its Regulation

Cited by 587 publications

References 72 publications

Redox potential (Eh) and pH as drivers of soil/plant/microorganism systems: a transdisciplinary overview pointing to integrative opportunities for agronomy

Redox potential (Eh) and pH as drivers of soil/plant/microorganism systems: a transdisciplinary overview pointing to integrative opportunities for agronomy

PHOTOSYNTHESIS BY AQUATIC PLANTS: EFFECTS OF UNSTIRRED LAYERS IN RELATION TO ASSIMILATION OF CO2 AND HCO3−AND TO CARBON ISOTOPIC DISCRIMINATION

Mitochondrial Regulation and Signalling in the Photosynthetic Cell

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PHOTOSYNTHESIS BY AQUATIC PLANTS: EFFECTS OF UNSTIRRED LAYERS IN RELATION TO ASSIMILATION OF CO₂ AND HCO₃⁻AND TO CARBON ISOTOPIC DISCRIMINATION