期刊
PLOS COMPUTATIONAL BIOLOGY
卷 10, 期 8, 页码 -出版社
PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pcbi.1003751
关键词
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资金
- National Science Foundation CAREER Award [CBET-0953202]
- National Institutes of Health [1RO1GM098642, 1R01AI076318, 1R01CA140214]
- Office of Naval Research [N00014-12-1-0631]
- DuPont Young Professorship
- David and Lucile Packard Fellowship
- Medtronic Fellowship
- Lane Fellowship
- Branco-Weiss Fellowship
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [0953202] Funding Source: National Science Foundation
Fluctuations in the growth rate of a bacterial culture during unbalanced growth are generally considered undesirable in quantitative studies of bacterial physiology. Under well-controlled experimental conditions, however, these fluctuations are not random but instead reflect the interplay between intra-cellular networks underlying bacterial growth and the growth environment. Therefore, these fluctuations could be considered quantitative phenotypes of the bacteria under a specific growth condition. Here, we present a method to identify phenotypic signatures by time-frequency analysis of unbalanced growth curves measured with high temporal resolution. The signatures are then applied to differentiate amongst different bacterial strains or the same strain under different growth conditions, and to identify the essential architecture of the gene network underlying the observed growth dynamics. Our method has implications for both basic understanding of bacterial physiology and for the classification of bacterial strains.
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