Plant Growth Regulation

, Volume 35, Issue 3, pp 257–262

Gibberellin synthesis inhibitors affect electron transport in plant mitochondria

Authors

  • Shuju Bai
    • Department of Forestry and Natural ResourcesPurdue University
  • William Chaney
    • Department of Forestry and Natural ResourcesPurdue University
Article

DOI: 10.1023/A:1014485825664

Cite this article as:
Bai, S. & Chaney, W. Plant Growth Regulation (2001) 35: 257. doi:10.1023/A:1014485825664

Abstract

NADH oxidation and cytochrome c reduction rates in the electrontransport chain were determined for mitochondria isolated from leaves of matureEuropean black alder (Alnus glutinosa L.) and exposed to arange of concentrations of the growth retardants flurprimidol andpaclobutrazol.NADH oxidation and cytochrome c reduction were enhanced by low concentrationsofboth compounds whereas higher concentrations reduced electron transport. Thisisthe first report of gibberellin synthesis inhibitors affecting electrontransport in plant mitochondria and provides evidence for another potentialmodeof action of this type of growth retardant.

Alnus glutinosaCytochrome c reductionElectron transportFlurprimidolGrowth retardantMitochondriaNADH oxidationPaclobutrazol
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© Kluwer Academic Publishers 2001