No effect of intraspecific relatedness on public goods cooperation in a complex community

• Autores: O'Brien, Siobhán; Hesse, Elze; Lujan, Adela Maria; Hodgson, David J.; Gardner, Andy; Buckling, Angus
• Año de publicación: 2018
• Idioma: inglés
• Tipo de recurso: artículo
• Materia: COOPERATION; MICROBIAL COMMUNITIES; PSEUDOMONAS; PUBLIC GOODS; SIDEROPHORES
• Institución: Consejo Nacional de Investigaciones Científicas y Técnicas

Many organisms—notably microbes—are embedded within complex communities where cooperative behaviors in the form of excreted public goods can benefit other species. Under such circumstances, intraspecific interactions are likely to be less important in driving the evolution of cooperation. We first illustrate this idea with a simple theoretical model, showing that relatedness—the extent to which individuals with the same cooperative alleles interact with each other—has a reduced impact on the evolution of cooperation when public goods are shared between species. We test this empirically using strain of Pseudomonas aeruginosa that vary in their production of metal-chelating siderophores in copper contaminated compost (an interspecific public good). We show that nonsiderophore producers grow poorly relative to producers under high relatedness, but this cost can be alleviated by the presence of the isogenic producer (low relatedness) and/or the compost microbial community. Hence, relatedness can become unimportant when public goods provide interspecific benefits.
Fil: O'Brien, Siobhán. Center for Adaptation to a Changing Environment; Suiza. University of Exeter; Reino Unido
Fil: Hesse, Elze. University of Exeter; Reino Unido
Fil: Lujan, Adela Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Química Biológica de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Centro de Investigaciones en Química Biológica de Córdoba; Argentina. University of Exeter; Reino Unido
Fil: Hodgson, David J.. University of Exeter; Reino Unido
Fil: Gardner, Andy. University of St. Andrews; Reino Unido
Fil: Buckling, Angus. University of Exeter; Reino Unido