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Intracellular pH Regulation of Plant Cells Under Anaerobic Conditions

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Low-Oxygen Stress in Plants

Part of the book series: Plant Cell Monographs ((CELLMONO,volume 21))

Abstract

The intracellular pH of living cells is strictly controlled in each compartment. Under normal conditions, the cytoplasmic pH (pHc) and the vacuolar pH (pHv) of typical plant cells are maintained at slightly alkaline (typically 7.5) and acidic (typically 5.5) values, respectively. A failure to maintain the pH homeostasis of cells leads to cell death. In general, anaerobic conditions induce acidosis in the cytoplasm of plant cells and thereby prolonged anoxia causes cell death. As a result, the regulation of intracellular pH has been an important topic for research in studies of the anoxia tolerance of plant cells (Plant Physiol 100:1–6, 1992; Annu Rev Plant Physiol Plant Mol Biol 48:223–250, 1997; Funct Plant Biol 30:1–47, 2003; Funct Plant Biol 30:999–1036, 2003; Plant Stress 2:1–19, 2008; Annu Rev Plant Biol 59:313–339, 2008). To date many researchers have published review articles to discuss acidosis and pH regulation of plant cells exposed to anaerobic conditions (Encyclopedia of plant physiology, Springer, Berlin, pp. 317–346, 1976; Annu Rev Plant Physiol 30:289–311, 1979; Int Rev Cytol 127:111–173, 1991; Ann Bot 79:39–48, 1997; Regulation of tissue pH in plants and animals, Cambridge University Press, Cambridge, pp. 193–213, 1999; Int Rev Cytol 206:1–44, 2001; Ann Bot 96:519–532, 2005; Plant roots: the hidden half, CRC Press, Boca Raton, Chapter 23, pp. 1–18, 2013). In this review, I will summarize the proposed mechanisms to control intracellular pH and include a brief discussion about anoxia tolerance on the basis of the limited information available for plant cells possessing extremely strong tolerance to anoxia.

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Acknowledgments

The author thanks Professor R. George Ratcliffe, Oxford University, Professor Timothy D. Colmer, and Dr. Hank Greenway, The University of Western Australia, for a critical reading of the manuscript.

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  1. Miyagi University of Education, 149 Aramaki-Aza-Aoba, Aoba-Ku, Sendai, 980-0845, Japan

    Kimiharu Ishizawa

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    Joost T. van Dongen

  2. Scuola Superiore Sant´Anna, Pisa, Italy

    Francesco Licausi

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Ishizawa, K. (2014). Intracellular pH Regulation of Plant Cells Under Anaerobic Conditions. In: van Dongen, J., Licausi, F. (eds) Low-Oxygen Stress in Plants. Plant Cell Monographs, vol 21. Springer, Vienna. https://doi.org/10.1007/978-3-7091-1254-0_4

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