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. 2016 Nov 10;7:1811. doi: 10.3389/fmicb.2016.01811

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Copyright © 2016 Yu, Yan, Chen, Jin, Guo and Chai.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Poly-γ-glutamic acid production influences robustness and complex morphology of the colony biofilms in the environmental isolates of B. subtilis. (A) Colony biofilms formed by various environmental isolates of B. subtilis and the corresponding Δpgs mutants. Colony biofilms were grown on LBGM for 48 h at 30°C before pictures were taken. Scale bar: 5 mm. (B) Colony biofilms formed by three 3610 derivatives, YY54 (ΔpgdS), RL3852 (ΔepsH), and SB505 (ΔtasA). Scale bar: 5 mm.