Ca2+ effect on protoplasmic streaming in Nitella internodal cell

Atsuko Takamatsu*, Tomokazu Aoki, Yoshimi Tsuchiya

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


Ca2+ ion effect on protoplasmic streaming in an internodal cell of Nitella has been investigated for various temperatures. We have found that the protoplasmic streaming at low temperature is remarkably affected by the Ca2+ ions in the internodal cell but larger concentrations of the Ca2+ ions are needed to suppress the streaming velocity at higher temperatures. These streaming behaviors of the protoplasm, furthermore, have been elucidated on the basis of the reaction equations which take into account ATP hydrolysis due to actin-myosin molecules and inactivity of the molecules due to the Ca2+ ions.

Original languageEnglish
Pages (from-to)182-186
Number of pages5
JournalBiophysical Journal
Issue number1
Publication statusPublished - 1993
Externally publishedYes

ASJC Scopus subject areas

  • Biophysics


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