An auxin-driven polarized transport model for phyllotaxis

• DOI: 10.1073/pnas.0509839103
• Publication Date: 2006-01-14T01:45:23Z
• Authors: Henrik Jönsson; Marcus G. Heisler; Bruce E. Shapiro; Elliot M. Meyerowitz; Eric Mjolsness
• Keywords: Phyllotaxis; Polar auxin transport; Plant hormone

Recent studies show that plant organ positioning may be mediated by localized concentrations of the hormone auxin. Auxin patterning in shoot apical meristem is turn brought about subcellular polar distribution putative auxin efflux mediator, PIN1. However, question what signals determine PIN1 polarization and how this gives rise to regular patterns concentration remains unknown. Here we address these questions using mathematical modeling combined with confocal imaging. We propose a model based on assumption influences its own within epidermis. such sufficient create spatial systems static dynamic cellular connectivities, latter governed mechanical model. also optimize parameter values for dynamics detailed transport model, which are taken from experimental estimates, together template consisting cell wall compartments as well quantitatively extracted data. The shows polarized can drive formation patterns.