The auxin influx carrier LAX3 promotes lateral root emergence. - Archive ouverte HAL Access content directly
Journal Articles Nature Cell Biology Year : 2008

The auxin influx carrier LAX3 promotes lateral root emergence.

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Kamal Swarup
  • Function : Author
Ranjan Swarup
  • Function : Author
Yaodong Yang
  • Function : Author
Steffen Vanneste
  • Function : Author
Mitch P Levesque
  • Function : Author
David Carrier
  • Function : Author
Nicholas James
  • Function : Author
Vanessa Calvo
  • Function : Author
Eric Kramer
  • Function : Author
Rebecca Roberts
  • Function : Author
Neil Graham
  • Function : Author
Sylvestre Marillonnet
  • Function : Author
Kanu Patel
  • Function : Author
Jonathan D G Jones
  • Function : Author
Christopher G Taylor
  • Function : Author
Daniel P Schachtman
  • Function : Author
Sean May
  • Function : Author
Goran Sandberg
  • Function : Author
Ian Kerr
  • Function : Author
Tom Beeckman

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.

Dates and versions

cea-00848585 , version 1 (26-07-2013)

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Cite

Kamal Swarup, Eva Benková, Ranjan Swarup, Ilda Casimiro, Benjamin Péret, et al.. The auxin influx carrier LAX3 promotes lateral root emergence.. Nature Cell Biology, 2008, 10 (8), pp.946-54. ⟨10.1038/ncb1754⟩. ⟨cea-00848585⟩
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