Complex regimes of the contractile activity in Physarum plasmodium: laser diagnostics of intracellular flows and mathematical models

Vladimir A. Teplov; Elena A. Khors; Dimitry A. Pavlov; Alexander V. Priezzhev; Yury M. Romanovsky

doi:10.1117/12.266243

11 February 1997 Complex regimes of the contractile activity in Physarum plasmodium: laser diagnostics of intracellular flows and mathematical models

Vladimir A. Teplov, Elena A. Khors, Dimitry A. Pavlov, Alexander V. Priezzhev, Yury M. Romanovsky

Author Affiliations +

Proceedings Volume 3053, Nonlinear Dynamics and Structures in Biology and Medicine: Optical and Laser Technologies: International Workshop; (1997) https://doi.org/10.1117/12.266243
Event: International Workshop on Nonlinear Dynamics and Structures in Biology and Medicine: Optical and Laser Technologies, 1996, Saratov, Russian Federation

Abstract

The intracellular motility of the huge amoeboid cell, Physarum plasmodium, is defined by autowave processes, which are caused by interaction of actomyosin-based contractile apparatus in ectoplasm and intracellular endoplasmic flows. With the use of cell tensiometry and laser Doppler spectroscopy technique the autowave regimes in plasmodial strands (which look like blood-vessels) was investigated under the conditions when endogenous contractile rhythm in a part of the strand was eliminated by respiratory inhibitors. Mathematical model for ectoplasm contraction waves and shuttle endoplasm streaming in the strand is presented. Solutions of the model expanded to simulate the case of non- uniform parameter distribution satisfactorily agree with the experimentally observed effects of the respiratory inhibitors.

Citation Download Citation

Vladimir A. Teplov, Elena A. Khors, Dimitry A. Pavlov, Alexander V. Priezzhev, and Yury M. Romanovsky "Complex regimes of the contractile activity in Physarum plasmodium: laser diagnostics of intracellular flows and mathematical models", Proc. SPIE 3053, Nonlinear Dynamics and Structures in Biology and Medicine: Optical and Laser Technologies: International Workshop, (11 February 1997); https://doi.org/10.1117/12.266243

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available