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Significance In many biological systems, efficient implementation of a multistep chemical reaction is achieved by an ordered spatial arrangement of individual reaction units. How can independently acting agents assemble into such a structure, and how much communication between them is required? We consider a model of a metabolically coupled multispecies bacterial colony and show that surprisingly simple threshold-based responses to local environment are sufficient to assemble a wide variety of structures. We also predict when additional signaling mechanisms between cells may be required.

Local growth rules can maintain metabolically efficient spatial structure throughout growth