Auxin influx carriers control vascular patterning and xylem differentiation in Arabidopsis thaliana.

ABSTRACT: Auxin is an essential hormone for plant growth and development. Auxin influx carriers AUX1/LAX transport auxin into the cell, while auxin efflux carriers PIN pump it out of the cell. It is well established that efflux carriers play an important role in the shoot vascular patterning, yet the contribution of influx carriers to the shoot vasculature remains unknown. Here, we combined theoretical and experimental approaches to decipher the role of auxin influx carriers in the patterning and differentiation of vascular tissues in the Arabidopsis inflorescence stem. Our theoretical analysis predicts that influx carriers facilitate periodic patterning and modulate the periodicity of auxin maxima. In agreement, we observed fewer and more spaced vascular bundles in quadruple mutants plants of the a

SUBMITTER: Fabregas N 

PROVIDER: S-EPMC4414528 | biostudies-literature | 2015 Apr

REPOSITORIES: biostudies-literature