Ljung, Karin
- Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences
Research article2002Peer reviewedOpen access
AtPIN4 mediates sink-driven auxin gradients and root patterning in Arabidopsis
Friml, Jirı́; Benková, Eva; Blilou, Ikram; Wisniewska, Justyna; Hamann, Thorsten; Ljung, Karin; Woody, Scott; Sandberg, Göran; Scheres, Ben; Jürgens, Gerd; Palme, Klaus
Abstract
In contrast to animals, little is known about pattern formation in plants. Physiological and genetic data suggest the involvement of the phytohormone auxin in this process. Here, we characterize a novel member of the PIN family of putative auxin efflux carriers,Arabidopsis PIN4, that is localized in developing and mature root meristems. Atpin4 mutants are defective in establishment and maintenance of endogenous auxin gradients, fail to canalize externally applied auxin, and display various patterning defects in both embryonic and seedling roots. We propose a role for AtPIN4 in generating a sink for auxin below the quiescent center of the root meristem that is essential for auxin distribution and patterning.
Published in
Cell
2002, volume: 108, number: 5, pages: 661-673
Publisher: CELL PRESS
SLU Authors
Sandberg, Göran
- Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences
- Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences
UKÄ Subject classification
Developmental Biology
Publication identifier
- DOI: https://doi.org/10.1016/S0092-8674(02)00656-6
Permanent link to this page (URI)
https://res.slu.se/id/publ/41652