The Perception of Fluctuations of Cell Velocity as a Possible Means of Overcoming Sedimentation by Motile Sea-Plankton Microorganisms
Journal Title: Modern Approaches in Oceanography and Petrochemical Sciences - Year 2018, Vol 2, Issue 3
Abstract
A model for overcoming the gravity by cells of wide range of motile sea-plankton microorganisms without gravity perception or antipredator behavior is proposed here. It is based on the assuming that the cells are able to detect thermal fluctuations of their velocities. In our model the cell locomotion force linearly depends on the cell velocity fluctuations causing especial type of gravikinesis. According to equations of the cell movement, sedimentation of the organisms may be considerably overcome. The speed of some microorganisms depends on their orientation within the gravity field (excluding buoyancy of the whole cells). This phenomenon is called gravikinesis. Physiological mechanisms of gravikinesis have been well examined and described by Hemmersbach & Häder et al, [1] for example. It is expressed by the existence of certain cell receptors accepting gravistimulus and, through signaling chains, causing the change of cell motor work.
Authors and Affiliations
Pundyak Oleh
Keywords
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- EP ID EP626274
- DOI 10.32474/MAOPS.2019.02.000139
- Views 82
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