Plant mitochondria are characterized by the presence of both phosphorylating (cytochrome) and non-phosphorylating (alternative) pathways, the activity of which directly affects the efficiency of mitochondrial energy conservation. The cyanide-insensitive AOX (alternative oxidase) is located on the inner surface of the inner membrane, results in the oxidation of ubiquinol and the net reduction of oxygen to water, is non-protonmotive and is considered to be one of the newest members of the di-iron carboxylate group of proteins. In thermogenic tissues it plays a key role in pollination and the maintenance of a warm environment for the flower, whereas in non-thermogenic tissues functions include acting as an energy overflow, part of the oxygen defence mechanism and maintaining plant growth homoeostasis.
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Feature| August 01 2006
‘Green’ …yet wasting energy?: Mitochondrial respiration in plants
Anthony L. Moore ;
Mary S. Albury ;
Biochem (Lond) (2006) 28 (4): 13–16.
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Anthony L. Moore, Mary S. Albury, Paul G. Crichton; ‘Green’ …yet wasting energy?: Mitochondrial respiration in plants. Biochem (Lond) 1 August 2006; 28 (4): 13–16. doi: https://doi.org/10.1042/BIO02804013
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