جهت دسترسی به کاربرگه ی زیر، از این لینک استفاده کنید. http://dl.pgu.ac.ir/handle/Hannan/47787
Title: How the Motility Pattern of Bacteria Affects Their Dispersal and Chemotaxis
Keywords: Biology;Microbiology;Engineering;Bioengineering;Biological Systems Engineering;Mathematics;Probability Theory;Stochastic Processes;Physics;Biophysics;Biomechanics;Cell Mechanics;Cell Motility;Flagellar Motility;Biophysics Theory;Classical Mechanics;Mechanics
Issue Date: 2013
Publisher: Public Library of Science
Description: Most bacteria at certain stages of their life cycle are able to move actively; they can swim in a liquid or crawl on various surfaces. A typical path of the moving cell often resembles the trajectory of a random walk. However, bacteria are capable of modifying their apparently random motion in response to changing environmental conditions. As a result, bacteria can migrate towards the source of nutrients or away from harmful chemicals. Surprisingly, many bacterial species that were studied have several distinct motility patterns, which can be theoretically modeled by a unifying random walk approach. We use this approach to quantify the process of cell dispersal in a homogeneous environment and show how the bacterial drift velocity towards the source of attracting chemicals is affected by the motility pattern of the bacteria. Our results open up the possibility of accessing additional information about the intrinsic response of the cells using macroscopic observations of bacteria moving in inhomogeneous environments.
URI: http://nrs.harvard.edu/urn-3:HUL.InstRepos:11879562
Other Identifiers: Taktikos, Johannes, Holger Stark, and Vasily Zaburdaev. 2013. “How the Motility Pattern of Bacteria Affects Their Dispersal and Chemotaxis.” PLoS ONE 8 (12): e81936. doi:10.1371/journal.pone.0081936. http://dx.doi.org/10.1371/journal.pone.0081936.
1932-6203
Type Of Material: OTHER
Appears in Collections:Faculty of Arts and Sciences

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