Document Detail

Modeling local interactions during the motion of cyanobacteria.
MedLine Citation:
PMID:  22713858     Owner:  NLM     Status:  MEDLINE    
Synechocystis sp., a common unicellular freshwater cyanobacterium, has been used as a model organism to study phototaxis, an ability to move in the direction of a light source. This microorganism displays a number of additional characteristics such as delayed motion, surface dependence, and a quasi-random motion, where cells move in a seemingly disordered fashion instead of in the direction of the light source, a global force on the system. These unexplained motions are thought to be modulated by local interactions between cells such as intercellular communication. In this paper, we consider only local interactions of these phototactic cells in order to mathematically model this quasi-random motion. We analyze an experimental data set to illustrate the presence of quasi-random motion and then derive a stochastic dynamic particle system modeling interacting phototactic cells. The simulations of our model are consistent with experimentally observed phototactic motion.
Amanda Galante; Susanne Wisen; Devaki Bhaya; Doron Levy
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2012-06-17
Journal Detail:
Title:  Journal of theoretical biology     Volume:  309     ISSN:  1095-8541     ISO Abbreviation:  J. Theor. Biol.     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-07-31     Completed Date:  2012-11-28     Revised Date:  2013-09-24    
Medline Journal Info:
Nlm Unique ID:  0376342     Medline TA:  J Theor Biol     Country:  England    
Other Details:
Languages:  eng     Pagination:  147-58     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
Department of Mathematics and Center for Scientific Computation and Mathematical Modeling (CSCAMM), University of Maryland, College Park, MD 20742, USA.
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MeSH Terms
Computer Simulation
Models, Biological*
Synechocystis / cytology*,  physiology*
Grant Support

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