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Auxin minimum defines a developmental window for lateral root initiation

Joseph G Dubrovsky, Selene Napsucialy-Mendivil, Jérôme Duclercq UGent, Yan Cheng, Svetlana Shishkova, Maria G Ivanchenko, Jiri Friml UGent, Angus S Murphy and Eva Benkova UGent (2011) NEW PHYTOLOGIST. 191(4). p.970-983
abstract
Root system architecture depends on lateral root (LR) initiation that takes place in a relatively narrow developmental window (DW). Here, we analyzed the role of auxin gradients established along the parent root in defining this DW for LR initiation. Correlations between auxin distribution and response, and spatiotemporal control of LR initiation were analyzed in Arabidopsis thaliana and tomato (Solanum lycopersicum). In both Arabidopsis and tomato roots, a well defined zone, where auxin content and response are minimal, demarcates the position of a DW for founder cell specification and LR initiation. We show that in the zone of auxin minimum pericycle cells have highest probability to become founder cells and that auxin perception via the TIR1/AFB pathway, and polar auxin transport, are essential for the establishment of this zone. Altogether, this study reveals that the same morphogen-like molecule, auxin, can act simultaneously as a morphogenetic trigger of LR founder cell identity and as a gradient-dependent signal defining positioning of the founder cell specification. This auxin minimum zone might represent an important control mechanism ensuring the LR initiation steadiness and the acropetal LR initiation pattern.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
auxin gradients, Arabidospsis thaliana, cell competence, developmental window, lateral root initiation, Solanum lycopersicum, OF-FUNCTION MUTATION, BOX PROTEIN TIR1, ARABIDOPSIS-THALIANA, CELL-CYCLE, FOUNDER CELLS, GENE, TRANSPORT, EFFLUX, EXPRESSION, GRADIENTS
journal title
NEW PHYTOLOGIST
New Phytol.
volume
191
issue
4
pages
970 - 983
Web of Science type
Article
Web of Science id
000293792400007
JCR category
PLANT SCIENCES
JCR impact factor
6.645 (2011)
JCR rank
6/189 (2011)
JCR quartile
1 (2011)
ISSN
0028-646X
DOI
10.1111/j.1469-8137.2011.03757.x
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
1937307
handle
http://hdl.handle.net/1854/LU-1937307
date created
2011-10-27 14:56:41
date last changed
2011-11-04 12:12:05
@article{1937307,
  abstract     = {Root system architecture depends on lateral root (LR) initiation that takes place in a relatively narrow developmental window (DW). Here, we analyzed the role of auxin gradients established along the parent root in defining this DW for LR initiation. 
Correlations between auxin distribution and response, and spatiotemporal control of LR initiation were analyzed in Arabidopsis thaliana and tomato (Solanum lycopersicum). 
In both Arabidopsis and tomato roots, a well defined zone, where auxin content and response are minimal, demarcates the position of a DW for founder cell specification and LR initiation. We show that in the zone of auxin minimum pericycle cells have highest probability to become founder cells and that auxin perception via the TIR1/AFB pathway, and polar auxin transport, are essential for the establishment of this zone. 
Altogether, this study reveals that the same morphogen-like molecule, auxin, can act simultaneously as a morphogenetic trigger of LR founder cell identity and as a gradient-dependent signal defining positioning of the founder cell specification. This auxin minimum zone might represent an important control mechanism ensuring the LR initiation steadiness and the acropetal LR initiation pattern.},
  author       = {Dubrovsky, Joseph G and Napsucialy-Mendivil, Selene and Duclercq, J{\'e}r{\^o}me and Cheng, Yan and Shishkova, Svetlana and Ivanchenko, Maria G and Friml, Jiri and Murphy, Angus S and Benkova, Eva},
  issn         = {0028-646X},
  journal      = {NEW PHYTOLOGIST},
  keyword      = {auxin gradients,Arabidospsis thaliana,cell competence,developmental window,lateral root initiation,Solanum lycopersicum,OF-FUNCTION MUTATION,BOX PROTEIN TIR1,ARABIDOPSIS-THALIANA,CELL-CYCLE,FOUNDER CELLS,GENE,TRANSPORT,EFFLUX,EXPRESSION,GRADIENTS},
  language     = {eng},
  number       = {4},
  pages        = {970--983},
  title        = {Auxin minimum defines a developmental window for lateral root initiation},
  url          = {http://dx.doi.org/10.1111/j.1469-8137.2011.03757.x},
  volume       = {191},
  year         = {2011},
}

Chicago
Dubrovsky, Joseph G, Selene Napsucialy-Mendivil, Jérôme Duclercq, Yan Cheng, Svetlana Shishkova, Maria G Ivanchenko, Jiri Friml, Angus S Murphy, and Eva Benkova. 2011. “Auxin Minimum Defines a Developmental Window for Lateral Root Initiation.” New Phytologist 191 (4): 970–983.
APA
Dubrovsky, J. G., Napsucialy-Mendivil, S., Duclercq, J., Cheng, Y., Shishkova, S., Ivanchenko, M. G., Friml, J., et al. (2011). Auxin minimum defines a developmental window for lateral root initiation. NEW PHYTOLOGIST, 191(4), 970–983.
Vancouver
1.
Dubrovsky JG, Napsucialy-Mendivil S, Duclercq J, Cheng Y, Shishkova S, Ivanchenko MG, et al. Auxin minimum defines a developmental window for lateral root initiation. NEW PHYTOLOGIST. 2011;191(4):970–83.
MLA
Dubrovsky, Joseph G, Selene Napsucialy-Mendivil, Jérôme Duclercq, et al. “Auxin Minimum Defines a Developmental Window for Lateral Root Initiation.” NEW PHYTOLOGIST 191.4 (2011): 970–983. Print.