Abstract
Mitochondrial respiration involves two key gas exchanges, the consumption of oxygen and the release of carbon dioxide. The ability to measure the consumption of oxygen via Clark-type electrodes has been one of the key techniques for advancing our knowledge of mitochondrial function in whole organisms, tissue samples, cells, and isolated subcellular fractions. In plants, oxygen electrode analyses provided the first evidence for some of the unique respiratory properties of plant mitochondria. This chapter briefs the principles of respiration and oxidative phosphorylation, how oxygen consumption measurements can be used to assess the quality of isolated mitochondrial preparations, and how these measurements can answer important questions in plant biochemistry and physiology. Finally, it presents instructions on assembling the oxygen electrode apparatus and how to conduct various assays.
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Acknowledgements
We thank Peter Rank (Rank Brothers Limited) for granting permission to use Fig. 2. This work is supported by the Australian Research Council Centre of Excellence in Plant Energy Biology and NLT and AHM as Australian Research Council Future Fellows.
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Jacoby, R.P., Millar, A.H., Taylor, N.L. (2015). Assessment of Respiration in Isolated Plant Mitochondria Using Clark-Type Electrodes. In: Whelan, J., Murcha, M. (eds) Plant Mitochondria. Methods in Molecular Biology, vol 1305. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-2639-8_12
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DOI: https://doi.org/10.1007/978-1-4939-2639-8_12
Publisher Name: Humana Press, New York, NY
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