Skip to main content
NCBI home page
Plant Physiology logoLink to Plant Physiology
. 1977 Feb;59(2):178–180. doi: 10.1104/pp.59.2.178

Mechanism of Cyanide Inhibition of Phloem Translocation 1

Robert Giaquinta a,2, Donald R Geiger b
PMCID: PMC542359  PMID: 16659811

Abstract

Petiolar application of potassium cyanide inhibited 14C-assimilate translocation without affecting source leaf photosynthesis or phloem loading of sucrose in Phaseolus vulgaris. The inhibition of transport was correlated with disruption of the structural integrity of the sieve tubes (sieve pore blockage) rather than impairment of a metabolic process in the translocation path driving translocation.

Full text

PDF
178

Images in this article

179Image
on p.179

Selected References

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

  1. Coulson C. L., Christy A. L., Cataldo D. A., Swanson C. A. Carbohydrate translocation in sugar beet petioles in relation to petiolar respiration and adenosine 5'-triphosphate. Plant Physiol. 1972 Jun;49(6):919–923. doi: 10.1104/pp.49.6.919. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Fisher D. B. Structure of functional soybean sieve elements. Plant Physiol. 1975 Nov;56(5):555–569. doi: 10.1104/pp.56.5.555. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Geiger D. R., Swanson C. A. Sucrose Translocation in the Sugar Beet. Plant Physiol. 1965 Jul;40(4):685–690. doi: 10.1104/pp.40.4.685. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Giaquinta R. T., Geiger D. R. Mechanism of inhibition of translocation by localized chilling. Plant Physiol. 1973 Feb;51(2):372–377. doi: 10.1104/pp.51.2.372. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Giaquinta R. Evidence for Phloem loading from the apoplast: chemical modification of membrane sulfhydryl groups. Plant Physiol. 1976 Jun;57(6):872–875. doi: 10.1104/pp.57.6.872. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Sij J. W., Swanson C. A. Effect of petiole anoxia on Phloem transport in squash. Plant Physiol. 1973 Feb;51(2):368–371. doi: 10.1104/pp.51.2.368. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. VERNON L. P., ARONOFF S. Metabolism of soybean leaves. IV. Translocation from soybean leaves. Arch Biochem Biophys. 1952 Apr;36(2):383–398. doi: 10.1016/0003-9861(52)90424-4. [DOI] [PubMed] [Google Scholar]
  8. Wishnick M., Lane M. D. Inhibition of ribulose diphosphate carboxylase by cyanide. Inactive ternary complex of enzyme, ribulose diphosphate, and cyanide. J Biol Chem. 1969 Jan 10;244(1):55–59. [PubMed] [Google Scholar]

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

RESOURCES