Ljung, Karin
- Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences
Research article2008Peer reviewed
The auxin influx carrier LAX3 promotes lateral root emergence
Swarup, Kamal; Benkova, Eva; Swarup, Ranjan; casimiro Ilda, ; Péret, Benjamin; Yang, Yaodong; Parry, Geraint; Nielsen, Erik; De Smet, I; Vanneste, S; Levesque, Mitch P.; Carrier, David; James, Nicholas; Calvo, Vanessa; Ljung, Karin; Kramer, Eric; Roberts, Rebecca; Graham, Neil; Marillonnet, Sylvestre; Patel, Kanu;
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Abstract
Lateral roots originate deep within the parental root from a small number of founder cells at the periphery of vascular tissues and must emerge through intervening layers of tissues. We describe how the hormone auxin, which originates from the developing lateral root, acts as a local inductive signal which re-programmes adjacent cells. Auxin induces the expression of a previously uncharacterized auxin influx carrier LAX3 in cortical and epidermal cells directly overlaying new primordia. Increased LAX3 activity reinforces the auxin-dependent induction of a selection of cell-wall-remodelling enzymes, which are likely to promote cell separation in advance of developing lateral root primordia.
Published in
Nature Cell Biology
2008, volume: 10, number: 8, pages: 946-954
Publisher: NATURE PUBLISHING GROUP
SLU Authors
UKÄ Subject classification
Developmental Biology
Publication identifier
- DOI: https://doi.org/10.1038/ncb1754
Permanent link to this page (URI)
https://res.slu.se/id/publ/41672