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. 1990 Jun;93(2):532–536. doi: 10.1104/pp.93.2.532

Relationship between Growth and Electric Oscillations in Bean Roots

Masaaki Souda 1,2, Kiyoshi Toko 1,2, Kenshi Hayashi 1,2, Takanori Fujiyoshi 1,2, Shu Ezaki 1,2, Kaoru Yamafuji 1,2
PMCID: PMC1062545  PMID: 16667498

Abstract

Extracellular and intracellular electric potentials in bean roots are known to show electric oscillations along the longitudinal axis with a period of several minutes. The relationship between growth and the electric oscillations was studied using roots of adzuki (Phaseolus chrysanthos). We measured surface electric potentials with a multielectrode apparatus while simultaneously measuring elongation using a CCD camera and monitor. Roots having an electric oscillation grew faster than roots with no oscillation. Furthermore, elongation rate was higher in roots with higher oscillation frequency. Oscillation frequency had a strong dependence on temperature; i.e. Q10 was estimated at 1.7. These results suggest a correlation between electric oscillation and elongation.

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Selected References

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

  1. Behrens H. M., Weisenseel M. H., Sievers A. Rapid Changes in the Pattern of Electric Current around the Root Tip of Lepidium sativum L. following Gravistimulation. Plant Physiol. 1982 Oct;70(4):1079–1083. doi: 10.1104/pp.70.4.1079. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Ogata K., Toko K., Fujiyoshi T., Yamafuji K. Electric inhomogeneity in membranes of Characean internode influenced by light/dark transition, O2, N2, CO2-free air and extracellular pH. Biophys Chem. 1987 Apr;26(1):71–81. doi: 10.1016/0301-4622(87)80009-1. [DOI] [PubMed] [Google Scholar]
  3. Pahlavanian A. M., Silk W. K. Effect of temperature on spatial and temporal aspects of growth in the primary maize root. Plant Physiol. 1988 Jun;87(2):529–532. doi: 10.1104/pp.87.2.529. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Rayle D. L., Cleland R. Enhancement of wall loosening and elongation by Acid solutions. Plant Physiol. 1970 Aug;46(2):250–253. doi: 10.1104/pp.46.2.250. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Toko K., Fujiyoshi T., Tanaka C., Iiyama S., Yoshida T., Hayashi K., Yamafuji K. Growth and electric current loops in plants. Biophys Chem. 1989 May;33(2):161–176. doi: 10.1016/0301-4622(89)80019-5. [DOI] [PubMed] [Google Scholar]
  6. Toko K., Iiyama S., Tanaka C., Hayashi K., Yamafuji K., Yamafuji K. Relation of growth process to spatial patterns of electric potential and enzyme activity in bean roots. Biophys Chem. 1987 Jul;27(1):39–58. doi: 10.1016/0301-4622(87)80045-5. [DOI] [PubMed] [Google Scholar]
  7. Toko K., Souda M., Matsuno T., Yamafuji K. Oscillations of electrical potential along a root of a higher plant. Biophys J. 1990 Feb;57(2):269–279. doi: 10.1016/S0006-3495(90)82529-7. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Weisenseel M. H., Dorn A., Jaffe L. F. Natural H Currents Traverse Growing Roots and Root Hairs of Barley (Hordeum vulgare L.). Plant Physiol. 1979 Sep;64(3):512–518. doi: 10.1104/pp.64.3.512. [DOI] [PMC free article] [PubMed] [Google Scholar]

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