Gravitaxis in Flagellates and Ciliates

Beitrag in einem Sammelwerk
(Buchkapitel)


Details zur Publikation

Autor(en): Häder DP, Hemmersbach R
Herausgeber: Markus Braun, Maik Böhmer, Donat-Peter Häder, Ruth Hemmersbach, Klaus Palme
Titel Sammelwerk: Gravitational Biology I - Gravity Sensing and Graviorientation in Microorganisms and Plants
Jahr der Veröffentlichung: 2018
Titel der Reihe: SpringerBriefs in Space Life Sciences
Seitenbereich: 27-45
ISSN: 2196-5560


Abstract

Motile microorganisms such as flagellates and ciliates use the gravity vector of the Earth to adjust their position in the water column. Oriented movement by gravity is called gravitaxis and can be positive (downward swimming) or negative (upward swimming). In addition, some ciliates modify their velocity according to the swimming direction (gravikinesis). Earth-bound research and experimentation under simulated and real microgravity have revealed that a heavy mass such as a statolith or the whole cell content presses onto a gravireceptor which perceives the signal. In some cases mechanosensitive ion channels have been identified as gravireceptors. The activation of the receptor results in a cascade of reactions which amplify the signal and result in a steering response changing the direction of movement.


FAU-Autoren / FAU-Herausgeber

Häder, Donat-Peter Prof. Dr.
Naturwissenschaftliche Fakultät


Autor(en) der externen Einrichtung(en)
Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)


Zitierweisen

APA:
Häder, D.-P., & Hemmersbach, R. (2018). Gravitaxis in Flagellates and Ciliates. In Markus Braun, Maik Böhmer, Donat-Peter Häder, Ruth Hemmersbach, Klaus Palme (Eds.), Gravitational Biology I - Gravity Sensing and Graviorientation in Microorganisms and Plants. (pp. 27-45).

MLA:
Häder, Donat-Peter, and Ruth Hemmersbach. "Gravitaxis in Flagellates and Ciliates." Gravitational Biology I - Gravity Sensing and Graviorientation in Microorganisms and Plants. Ed. Markus Braun, Maik Böhmer, Donat-Peter Häder, Ruth Hemmersbach, Klaus Palme, 2018. 27-45.

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Zuletzt aktualisiert 2019-23-04 um 07:53