Skip to main content
Plant Physiology logoLink to Plant Physiology
. 1985 Apr;77(4):873–876. doi: 10.1104/pp.77.4.873

Evidence for a Plasmalemma Redox System in Sugarcane 1

Margaret Thom 1, Andrew Maretzki 1
PMCID: PMC1064622  PMID: 16664153

Abstract

A plasmalemma-bound NADH-dependent redox system has been identified in protoplasts isolated from cell suspensions of sugarcane. This system oxidized NADH as well as NADPH, increased O2 consumption 3-fold, and increased the pH of the external medium while the cytoplasmic pH was decreased. In the presence of NADH, ferricyanide was rapidly reduced and the external medium was acidified. The uptake rates of K+, 3-O-methylglucose, leucine, and arginine were all decreased in the presence of NADH.

Full text

PDF
873

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Federico R., Giartosio C. E. A transplasmamembrane electron transport system in maize roots. Plant Physiol. 1983 Sep;73(1):182–184. doi: 10.1104/pp.73.1.182. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Lin W. Further Characterization on the Transport Property of Plasmalemma NADH Oxidation System in Isolated Corn Root Protoplasts. Plant Physiol. 1984 Feb;74(2):219–222. doi: 10.1104/pp.74.2.219. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Lin W. Responses of corn root protoplasts to exogenous reduced nicotinamide adenine dinucleotide: Oxygen consumption, ion uptake, and membrane potential. Proc Natl Acad Sci U S A. 1982 Jun;79(12):3773–3776. doi: 10.1073/pnas.79.12.3773. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Löw H., Crane F. L. Redox function in plasma membranes. Biochim Biophys Acta. 1978 Jul 31;515(2):141–161. doi: 10.1016/0304-4157(78)90002-3. [DOI] [PubMed] [Google Scholar]
  5. Rubinstein B., Stern A. I., Stout R. G. Redox activity at the surface of oat root cells. Plant Physiol. 1984 Oct;76(2):386–391. doi: 10.1104/pp.76.2.386. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Thom M., Maretzki A., Komor E. Vacuoles from Sugarcane Suspension Cultures : I. ISOLATION AND PARTIAL CHARACTERIZATION. Plant Physiol. 1982 Jun;69(6):1315–1319. doi: 10.1104/pp.69.6.1315. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. WADDELL W. J., BUTLER T. C. Calculation of intracellular pH from the distribution of 5,5-dimethyl-2,4-oxazolidinedione (DMO); application to skeletal muscle of the dog. J Clin Invest. 1959 May;38(5):720–729. doi: 10.1172/JCI103852. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Werdan K., Heldt H. W. Accumulation of bicarbonate in intact chloroplasts following a pH gradient. Biochim Biophys Acta. 1972 Dec 14;283(3):430–441. doi: 10.1016/0005-2728(72)90260-5. [DOI] [PubMed] [Google Scholar]

Articles from Plant Physiology are provided here courtesy of Oxford University Press

RESOURCES