Patterns of cell thickness oscillations during directional migration of Physarum polycephalum

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• 作者：Beatrice Rodiek ; Seiji Takagi ; Tetsuo Ueda…
• 关键词：Cell locomotion ; Cell motility ; Spatio ; temporal patterns ; Physarum polycephalum ; Self ; organisation ; Rhythmic contraction
• 刊名：European Biophysics Journal
• 出版年：2015
• 出版时间：July 2015
• 年：2015
• 卷：44
• 期：5
• 页码：349-358
• 全文大小：2,613 KB
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• 作者单位：Beatrice Rodiek (1)
  Seiji Takagi (2) (3)
  Tetsuo Ueda (2)
  Marcus. J. B. Hauser (1)
  
  1. Abteilung Biophysik, Institut für Experimentelle Physik, Otto-von-Guericke Universit?t Magdeburg, Universit?tsplatz 2, 39106, Magdeburg, Germany
  2. Research Institute for Electronic Science, Hokkaido University, N20 W10, Kita-ku, Sapporo, 060-0806, Japan
  3. School of Systems Information Science, Future University of Hakodate, 116-2, Kamedanakano-cho, Hakodate, 041-8655, Japan
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Biophysics and Biomedical Physics
  Cell Biology
  Biochemistry
  Plant Physiology
  Animal Physiology
  Neurobiology
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1432-1017

文摘

The functional relationship between the velocity of cell locomotion and intracellular spatial patterns of thickness oscillations in the acellular slime mould Physarum polycephalum was studied. The freely migrating plasmodial cells of 300-00?μm length were tadpole-shaped and displayed thickness oscillations along their longitudinal (body) axis. Two distinct patterns of intracellular thickness oscillations were observed in dependence on the locomotive velocity. The first mode consisted of a single travelling wave that propagated from the rear to the front of the cell. This pattern occurred when the plasmodium migrated slowly. The second mode was?a multinodal standing wave that was found during events of fast propagation. Transitions between these two types of cell thickness oscillation patterns took place in narrow propagation velocity intervals. We discuss the possible mechanism leading to these patterns, which are conjectured to modulate both the intracellular pressure and?the velocity of free locomotion of the cell.