Relaxation of graviresponses of the ciliate Didinium following step transition to the weightless condition

Microgravity Science and Technology

Volumn 11, Issue 1, 1998, Pages 35-43

  Machemer Rohnisch S ^a   Brauckerz R ^a   Machemer, H ^a  

^a RUHR UNIVERSITY BOCHUM   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

CELLS; CYTOLOGY; RELAXATION PROCESSES; VISCOELASTICITY;

GRAVIRESPONSES; STEP TRANSITION;

GRAVITATIONAL EFFECTS;

EID: 0032310748     PISSN: 09380108     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (22)

1. Nagel, U., Watzke, D., Neugebauer, D. C., Machemer-Röhnisch, S., Bräucker, R., Machemer, H.: Analysis of Sedimentation of Immobilized Cells Under Normal and Hypergravity. Microgravity sci. technol., vol. 10, p. 41 (1997)
2. Machemer, H., Bräucker, R.: Gravireception and Graviresponses in Ciliates. Acta Protozool., vol. 31, p. 185 (1992)
3. Machemer, H., Deitmer, J. W.: Mechanoreception in Ciliates; in: Progress in Sensory Physiology, vol. 5, p. 81, Springer Verlag, Heidelberg, (1985)
4. Machemer, H.: Electromotor Coupling in Cilia; in: Membrane Control of Cellular Activity, H. C. Lüttgau, (ed.). Fortschr. Zool., vol. 33, p. 205 (1986)
5. Machemer, H., Machemer-Röhnisch, S., Bräucker, R., Takahashi, K.: Gravikinesis in Paramecium: Theory and Isolation of a Physiological Response To the Natural Gravity Vector. J. Comp. Physiol. A, vol. 168, p. 1 (1991)
6. Machemer, H., Bräucker, R., Murakami, A., Yoshimura, K.: Graviperception in Unicellular Organisms: A Comparative Behavioural Study Under Short-term Microgravity. Microgravity sci. technol., vol. 5, p. 221 (1993)
7. Bräucker, R., Machemer-Röhnisch, S., Machemer, H.: Graviresponses in Paramecium and Didinium Examined Under Varied Hypergravity Conditions. J. Exp. Biol., vol. 197, p. 271 (1994)
8. Ogura, A., Machemer, H.: Distribution of Mechanoreceptor Channels in the Paramecium Surface Membrane. J. Comp. Physiol., vol. 135, p. 233 (1980)
9. De Peyer, J., Machemer, H:. Hyperpolarizing and Depolarizing Mechanoreceptor Potentials in Stylonychia. J. Comp. Physiol., vol. 127, p. 255 (1978)
10. Hara, R., Asai, H.: Electrophysiological Responses of Didinium nasutum To Paramecium Capture and Mechanical Stimulation. Nature, vol. 283, p. 869 (1980)
11. Hara, R., Asai, H., Naitoh, Y.: Electrical Responses of the Carnivorous Ciliate Didinium nasutum in Relation To Discharge of the Extrusive Organelles. J. Exp. Biol., vol. 119, p. 211 (1985)
12. Mogami, Y., Pernberg, J., Machemer, H.: Messenger Role of Calcium in Ciliary Electromotor Coupling: A Reassessment. Cell Calcium, vol. 11, p. 665 (1990)
13. Pernberg, J., Machemer, H.: Voltage Dependence of Ciliary Activity in the Ciliate Didinium nasutum. J. Exp. Biol., vol. 198, p. 2537 (1995)
14. Machemer, H., Nagel, U., Bräucker, R.: Assessment of g-dependent Cellular Gravitaxis: Determination of Cell Orientation From Locomotion Track. J. Theor. Biol., vol. 185, p. 201 (1997)
15. Machemer, H.: Unicellular Responses to Gravity Transitions. Space Forum, vol. 3 (in press) (1998)
16. Ingber, D. E.: Cellular Tensegrity: Defining New Rules of Biological Design that Govern the Cytoskeleton. J. Cell Sci., vol. 104, p. 613 (1993)
17. Machemer-Röhnisch, S., Bräucker, R., Machemer, H.: Graviresponses of Gliding and Swimming Loxodes Using Step Transition to Weightlessness. J. Euk. Microbiol., vol. 45, p. 411 (1998)
18. Bräucker, R., Murakami, A., Ikegaya, K., Yoshimura, K., Takahashi, K., Machemer-Röhnisch, S., Machemer, H.: Relaxation and Activation of Graviresponses in Paramecium. J. Exp. Biol., vol. 201, p. 2103 (1998)
19. Finlay, B. J., Fenchel, T.: Physiological Ecology of the Ciliated Protozoon Loxodes. Rep. Freshwat. Biol. Ass., vol. 54, p. 73 (1986)
20. Neugebauer, D. Ch., Machemer, H.: Is There an Orientation-dependent Excursion of the Müller Body in the 'Statocystoid' of Loxodes? Cell Tissue Res., vol. 287, p. 577 (1997)
21. Neugebauer, D.-Ch., Machemer-Röhnisch, S., Nagel, U., Bräucker, R., Machemer, H.: Evidence of Central and Peripheral Gravireception in the Ciliate Loxodes. J. Comp. Physiol. A (in press) (1998)
22. Wang, N., Butler, J. P., Ingber, D. E.: Mechanotransduction Across the Cell Surface and Through the Cytoskeleton. Science, vol. 260, p. 1124 (1993)