2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/87937We present a simple model based on a reaction-diffusion equation to explain pattern formation in a multicellular bacterium (Streptomyces). We assume competition for resources as the basic mechanism that leads to pattern formation; in particular we are able to reproduce the spatial pattern formed by bacterial aerial mycelium in case of growth in minimal (low resources) and maximal (large resources) culture media.10 pages, 6 figures (Postscript), to appear in Journal of biological PhysicsBiological PhysicsStatistical MechanicsPattern Formation and SolitonsPopulations and Evolutiontext