Expression of uncoupling protein and alternative oxidase depends on lipid or carbohydrate substrates in thermogenic plants.

@article{Ito2005ExpressionOU,
  title={Expression of uncoupling protein and alternative oxidase depends on lipid or carbohydrate substrates in thermogenic plants.},
  author={Kikukatsu Ito and Roger S Seymour},
  journal={Biology letters},
  year={2005},
  volume={1 4},
  pages={427-30}
}
Thermogenesis, in which cellular respiratory activity is considerably stimulated, requires mitochondrial uncoupling protein (UCP) in mammals and an alternative oxidase (AOX) in plants. Here, we show that the genes for both proteins are expressed in thermogenic plants, but the type correlates with the respiratory substrate. A novel gene termed PsUCPa encoding a variant of UCP was specifically expressed in thermogenic flowers of Philodendron selloum, which uses lipids as substrates. However, a… CONTINUE READING