Patterns of Expansion produced by a Structured Cell Population of Serratia marcescens in Response to Different Media

Fumiko Hiramatsu, Jun Ichi Wakita, Naoki Kobayashi, Yoshihiro Yamazaki, Mitsugu Matsushita, Tohey Matsuyama

    Research output: Contribution to journalArticle

    8 Citations (Scopus)


    Characteristic patterns of expansion were generated by bacterial cell populations of Serratia marcescens on media with different concentrations of nutrient and agar. These patterns were classified as Eden-like, dense-branching-morphology-like, flower-like, concentric ring-like and diffusion-limited aggregation-like. Although flower-like was specific to Serratia marcescens, the other patterns were exhibited by Bacillus subtilis. Through macro- and microscopic tracing of the processes generating these patterns, physico-chemical principles of bacterial growth, collaborative and independent properties of bacteria, structural organization for population expansion, and the division of labor among bacterial cells (i.e., wall composer, pressure generator, and logistic supporter) were brought to light.

    Original languageEnglish
    Pages (from-to)120-125
    Number of pages6
    JournalMicrobes and Environments
    Issue number2
    Publication statusPublished - 2005



    • bacterial population
    • collective behavior
    • pattern formation
    • Serratia marcescens

    ASJC Scopus subject areas

    • Ecology, Evolution, Behavior and Systematics
    • Soil Science
    • Plant Science

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