Heterogeneous individual motility biases group composition in a model of aggregating cells
dc.contributor.author | Forget, Mathieu | pt_BR |
dc.contributor.author | Adiba, Sandrine | pt_BR |
dc.contributor.author | Brunnet, Leonardo Gregory | pt_BR |
dc.contributor.author | De Monte, Silvia | pt_BR |
dc.date.accessioned | 2023-02-07T05:02:10Z | pt_BR |
dc.date.issued | 2022 | pt_BR |
dc.identifier.issn | 2296-701X | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/254242 | pt_BR |
dc.description.abstract | Aggregative life cycles are characterized by alternating phases of unicellular growth and multicellular development. Their multiple, independent evolutionary emergence suggests that they may have coopted pervasive properties of single-celled ancestors. Primitive multicellular aggregates, where coordination mechanisms were less efficient than in extant aggregative microbes, must have faced high levels of conflict between different co-aggregating populations. Such conflicts within a multicellular body manifest in the differential reproductive output of cells of different types. Here, we study how heterogeneity in cell motility affects the aggregation process and creates a mismatch between the composition of the population and that of self-organized groups of active adhesive particles. We model cells as self-propelled particles and describe aggregation in a plane starting from a dispersed configuration. Inspired by the life cycle of aggregative model organisms such as Dictyostelium discoideum or Myxococcus xanthus, whose cells interact for a fixed duration before the onset of chimeric multicellular development, we study finite-time configurations for identical particles and in binary mixes. We show that co-aggregation results in three different types of frequency-dependent biases, one of which is associated to evolutionarily stable coexistence of particles with different motility. We propose a heuristic explanation of such observations, based on the competition between delayed aggregation of slower particles and detachment of faster particles. Unexpectedly, despite the complexity and non-linearity of the system, biases can be largely predicted from the behavior of the two corresponding homogenous populations. This model points to differential motility as a possibly important factor in driving the evolutionary emergence of facultatively multicellular life-cycles. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Frontiers in Ecology and Evolution. Lausanne. Vol. 10 (Dec. 2022), 1052309, 18 p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Multicellularity | en |
dc.subject | Biologia evolutiva | pt_BR |
dc.subject | Agregacao | pt_BR |
dc.subject | Evolution | en |
dc.subject | Self-propelled particle systems | en |
dc.subject | Simulação computacional | pt_BR |
dc.subject | Aggregation | en |
dc.subject | Dinâmica populacional | pt_BR |
dc.subject | Motility | en |
dc.subject | Heterogeneity | en |
dc.title | Heterogeneous individual motility biases group composition in a model of aggregating cells | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001160356 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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