Hydrodynamic Surface Interactions Enable Escherichia Coli to Seek Efficient Routes to Swim Upstream

作     者：Jane Hill Ozge Kalkanci Jonathan L. McMurry Hur Koser 

作者机构：Yale University Department of Chemical Engineering Environmental Engineering Program Mason Laboratory Room 318 New Haven Connecticut 06520-8286 USA Bogazici University Department of Biomedical Engineering Bebek Istanbul Turkey Yale University Molecular Biophysics & Biochemistry Department 266 Whitney Avenue New Haven Connecticut 06520-8114 USA Yale University Department of Electrical Engineering 15 Prospect Street Becton 507 New Haven Connecticut 06520-8284 USA 

出 版 物：《Physical Review Letters》 (Phys Rev Lett)

年 卷 期：2007年第98卷第6期

页      面：068101-068101页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：NIGMS NIH HHS [F32 GM070333] Funding Source: Medline 

主　　题：Escherichia coli 

摘      要：Escherichia coli in shear flow near a surface are shown to exhibit a steady propensity to swim towards the left (within the relative coordinate system) of that surface. This phenomenon depends solely on the local shear rate on the surface, and leads to cells eventually aligning and swimming upstream preferentially along a left sidewall or crevice in a wide range of flow conditions. The results indicate that flow-assisted translation and upstream swimming along surfaces might be relevant in various models of bacterial transport, such as in pyelonephritis and bacterial migration in wet soil and aquatic environments in general.