Contributions individuelles
Spatial dynamics of flower organ formation
Cortés Poza, Yuririaa and Pablo Padilla Longoria
IIMAS, Universidad Nacional Autónoma de México
ANNULÉE

Understanding the emergence of biological structures and their changes is a complex problem. On a biochemical level, it is based on genetic regulatory networks (GRN) consisting on interactions of genes responsible for cell differentiation and coupled in a greater scale with external factors. As a specific example we consider the GRN involved in cellular determination during the early stages of development of the flower in  Arabidopsis thaliana plant.

We present a systematic way to derive evolution equations, based on experimental information, taken from the architecture of the flower’s GRN. Our model reproduces correctly the spatial dynamics of flower organ formation.

References

  1. Alvarez-Buylla, E.R.; Chaos A.; Cortés-Poza Y.; Espinosa-Soto C.; Padilla-Longoria. De genes a patrones: una propuesta metodológica. Pp. 473-486.  In García- Colín, Scherer, L.; Dagdug, L.; Miramontes, P.; Roja, Arturo (Coord.). La Física Biológica en México: Temas Selectos. El Colegio Nacional. México. 2004.
  2.  Alvarez-Buylla, E., Benítez M., Chaos, A.; Cortés-Poza, Y.; Esponosa-Soto, C.; Escalera, G., Padilla-Longoria. Floral Morphogenesis Stochastic Explorations of a Gene Network’s Epigenetic Landscape, Plos one, Vol. 3, Issue 11, noviembre 2008.
  3.  Elena R. Alvarez-Buylla, Mariana Benítez, Álvaro Chaos, Yuriria Cortés, Gerardo Escalera-Santos, Carlos Espinosa, Pablo Padilla. Variational Problems Arising in Biology, Centre de Recherches Mathématiques, CRM Proceedings and Lecture Notes. Vol. 44, 2007.
  4. Barrio, R. A., Romero-Arias, J. R., Noguez, M. A., Azpetia E., Ortiz-Gutierrez, E., Hernandez-Hernandez, V., Cortes-Poza, Y., Alvarez-Buylla, E., Cell patterns  emergence form coupled chemical and physical fields with cell proliferation dynamics: the Arabidopsis thaliana root as a study system, PLOS Computational Biology. Accepted, in printing, 2013.
  5. Espinosa-Soto C, Padilla-Longoria P, Alvarez-Buylla E. R., A gene regulatory  network model for cell-fate determination during Arabidopsis thaliana flower development that is robust and recovers experimental gene expression profiles. Plant Cell 16: 2923–39, 2004.
  6. Alvarez-Buylla ER, Benítez M, Dávila EB, Chaos A, Espinosa-Soto C, Padilla-Longoria P Gene regulatory network models for plant development. Curr Opin Plant Biol 10: 83–91. 2007.
Mardi, 18 juin, 16h30
Salle George V