Relationship between growth and electric oscillations in bean roots

Masaaki Souda, Kiyoshi Toko, Kenshi Hayashi, Takanori Fujiyoshi, Shu Ezaki, Kaoru Yamafuji

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)532-536
Number of pages5
JournalPlant physiology
Issue number2
Publication statusPublished - Jun 1990

All Science Journal Classification (ASJC) codes

  • Physiology
  • Genetics
  • Plant Science


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