Density dependent diffusional model of an infective population.
In this work, we present a density-dependent diffusional model which, coupled to three different types of growth, permitted us to study the infective potential of a bacteria species. The results show that those species with strong internal competency have the higher colonizing capacity in terms of invasion speed. Here, we also advanced a model for the static spatial inhomogeneous distribution that some species establish after migration. It is proposed that the origin of these patterns is the result of a balance between the dispersal tendency and the attractive behavior. The results obtained were compared with the observed behavior of Rhizobium spp. during infection of leguminous roots. A possible explanation of the observed morphologies of nodule development in different legumes is suggested.
Lara-Ochoa
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Centro de Investigación Sobre Fijación de Nitrógeno, UNAM, Cuernavaca, Morelos, México.
Bustos
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D001424:Bacterial Infections / Q000382:microbiology*; D002455:Cell Division; D015169:Colony Count, Microbial; D004058:Diffusion; D007887:Fabaceae / Q000382:microbiology; D008954:Models, Biological; D010946:Plants, Medicinal; D012231:Rhizobium / Q000166:cytology