Coupling between distant biofilms and emergence of nutrient time-sharing

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Science  12 May 2017:
Vol. 356, Issue 6338, pp. 638-642
DOI: 10.1126/science.aah4204

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  • Experimental evidence of coherence in bacterial communication system
    • Sarangam Majumdar, Student, Dipartimento di Ingegneria Scienze Informatiche e Matematica Università degli Studi di L' Aquila Via Vetoio – Loc. Coppito 67010

    In the recent published paper in Science Liu et al. “ Coupling between distant biofilms and emergence of nutrient time-sharing”, 2017 showed that B. subtilis biofilm communities undergoing metabolic oscillation is coupled through ion channels enable electrical communication and synchronize their growth dynamics. From theoretical and experiment point of view an in-phase and anti-phase oscillation is noticed in the complex biological system. In Fig. S2 (A) they confirm that pair of wild-type biofilms grown at 1x glutamate concentration (30 mM) started oscillations slightly out of phase, but then become in-phase (approximately 0 phase difference) after one oscillation cycle ( See the supplimentary and Movie S2). Thus, we can find a constant phase difference in oscillation, which indicate a well known “ coherence” phenomenon. So, it is a remarkable achievement because after a long time coherence is observed in biological system. We hope that this significant observable coherence phenomenon can open a new avenue of research.


    J. Liu et al., Science 10.1126/science. aah4204 (2017).

    Competing Interests: None declared.