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Frequency-Dependent Escherichia coli Chemotaxis Behavior
Zhu, Xuejun1,2; Si, Guangwei1,2; Deng, Nianpei2; Ouyang, Qi1,2; Wu, Tailin2; He, Zhuoran2; Jiang, Lili3; Luo, Chunxiong1,2; Tu, Yuhai2,4; Zhu, XJ (reprint author), Peking Univ, Ctr Microfluid & Nanotechnol, State Key Lab Artificial Microstruct & Mesoscop P, Sch Phys, Beijing 100871, Peoples R China.
2012-03-23
发表期刊PHYSICAL REVIEW LETTERS
ISSN0031-9007
文章类型Article
卷号108期号:12
产权排序3
摘要We study Escherichia coli chemotaxis behavior in environments with spatially and temporally varying attractant sources by developing a unique microfluidic system. Our measurements reveal a frequency-dependent chemotaxis behavior. At low frequency, the E. coli population oscillates in synchrony with the attractant. In contrast, in fast-changing environments, the population response becomes smaller and out of phase with the attractant waveform. These observations are inconsistent with the well-known Keller-Segel chemotaxis equation. A new continuum model is proposed to describe the population level behavior of E. coli chemotaxis based on the underlying pathway dynamics. With the inclusion of a finite adaptation time and an attractant consumption rate, our model successfully explains the microfluidic experiments at different stimulus frequencies.
学科领域Medical Psychology
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收录类别SCI
语种英语
项目资助者NSF of China [11021463, 11074009, 11174012] ; MOST of China [2009CB918500] ; NFFTBS of China [J0630311] ; NIH [R01GM081747]
项目简介The authors would like to thank S. B. Liang and Y. H. Jin for discussions. This work is partially supported by the NSF of China (11021463, 11074009, 11174012), the MOST of China (2009CB918500), and the NFFTBS of China (J0630311). Y. T. is partially supported by a NIH grant (No. R01GM081747).
WOS记录号WOS:000301854400011
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文献类型期刊论文
条目标识符http://ir.psych.ac.cn/handle/311026/12824
专题中国科学院心理健康重点实验室
通讯作者Zhu, XJ (reprint author), Peking Univ, Ctr Microfluid & Nanotechnol, State Key Lab Artificial Microstruct & Mesoscop P, Sch Phys, Beijing 100871, Peoples R China.
作者单位1.Peking Univ, Ctr Microfluid & Nanotechnol, State Key Lab Artificial Microstruct & Mesoscop P, Sch Phys, Beijing 100871, Peoples R China
2.Peking Univ, Ctr Theoret Biol, Acad Adv Interdisciplinary Studies, Beijing 100871, Peoples R China
3.Chinese Acad Sci, Lab Funct Connectome & Dev, Key Lab Behav Sci, Inst Psychol, Beijing 100101, Peoples R China
4.IBM Corp, TJ Watson Res Ctr, Yorktown Hts, NY 10598 USA
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GB/T 7714
Zhu, Xuejun,Si, Guangwei,Deng, Nianpei,et al. Frequency-Dependent Escherichia coli Chemotaxis Behavior[J]. PHYSICAL REVIEW LETTERS,2012,108(12).
APA Zhu, Xuejun.,Si, Guangwei.,Deng, Nianpei.,Ouyang, Qi.,Wu, Tailin.,...&Zhu, XJ .(2012).Frequency-Dependent Escherichia coli Chemotaxis Behavior.PHYSICAL REVIEW LETTERS,108(12).
MLA Zhu, Xuejun,et al."Frequency-Dependent Escherichia coli Chemotaxis Behavior".PHYSICAL REVIEW LETTERS 108.12(2012).
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