Modeling of hysteresis in pH pattern formation along the cell membrane of the algae Chara corallina

A. I. Lavrova, T. Yu Plusnina, A. A. Bulychev, G. Yu Riznichenko, A. B. Rubin

Research output: Contribution to journalArticlepeer-review

Abstract

It is known that illumination of the algae Chara corallina results in the formation of regions with inhomogeneous pH distribution in the proximity of the membrane. It was shown that, in a certain range of light intensities, two states with different pH distribution may correspond to the same intensity: an entirely homogeneous state and completely formed structures (pattern). The transition to the state with a high amplitude of pH peaks takes place at a higher light intensity than the transition to the homogeneous state; i.e., the system shows hysteresis. This phenomenon was studied using a mathematical model. A possible mechanism of hysteresis is discussed.

Original languageEnglish
Pages (from-to)939-944
Number of pages6
JournalBiophysics
Volume50
Issue number6
StatePublished - 1 Dec 2005

Scopus subject areas

  • Biophysics

Keywords

  • Cell membrane
  • Hysteresis
  • Membrane potential
  • pH pattern formation
  • Proton transport

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