‘Green’ …yet wasting energy? - mitochondrial respiration in plants

Anthony L. Moore, Mary S. Albury, Paul G. Crichton

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Pages (from-to)13-16
Number of pages4
JournalThe Biochemist
Volume28
Issue number4
Publication statusPublished - Aug 2006

Keywords

  • Alternative oxidase
  • ATP
  • Di-iron protein
  • Plant mitochondrion
  • Respiration
  • Thermogenesis

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