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Abstract

The co-ordinated polarity of cells within the plane of a single tissue layer (planar polarity) is intensively studied in animal epithelia but has only recently been systematically analysed in plants. The polar positioning of hairs in the root epidermis of Arabidopsis tholionor provides an easily accessible system for the functional dissection of a plant-specific planar polarity. Recently, mutants originally isolated in genetic screens for defects in root hair morphogenesis and changes in the sensitivity to or the production of the plant hormones auxin and ethylene have identified players that contribute to polar root hair placement. Here, we summarize and discuss recent progress in research on polar root hair positioning from studies in Arobidopsis.

Keywords

Arabidopsis; auxin; co-ordinate polarity; ethylene; planar polarity; root hair

Published in

Biochemical Society Transactions
2007, volume: 35, number: 1, pages: 149-151

SLU Authors

UKÄ Subject classification

Developmental Biology
Botany

Publication identifier

  • DOI: https://doi.org/10.1042/bst0350149

Permanent link to this page (URI)

https://res.slu.se/id/publ/14111