Ghent University Academic Bibliography

Advanced

Phloem-associated auxin response maxima determine radial positioning of lateral roots in maize

Leentje Jansen UGent, Ianto Roberts UGent, Riet De Rycke UGent and Tom Beeckman UGent (2012) PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES. 367(1595). p.1525-1533
abstract
In Arabidopsis thaliana, lateral-root-forming competence of pericycle cells is associated with their position at the xylem poles and depends on the establishment of protoxylem-localized auxin response maxima. In maize, our histological analyses revealed an interruption of the pericycle at the xylem poles, and confirmed the earlier reported proto-phloem-specific lateral root initiation. Phloempole pericycle cells were larger and had thinner cell walls compared with the other pericycle cells, highlighting the heterogeneous character of the maize root pericycle. A maize DR5::RFP marker line demonstrated the presence of auxin response maxima in differentiating xylem cells at the root tip and in cells surrounding the proto-phloem vessels. Chemical inhibition of auxin transport indicated that the establishment of the phloem-localized auxin response maxima is crucial for lateral root formation in maize, because in their absence, random divisions of pericycle and endodermis cells occurred, not resulting in organogenesis. These data hint at an evolutionarily conserved mechanism, in which the establishment of vascular auxin response maxima is required to trigger cells in the flanking outer tissue layer for lateral root initiation. It further indicates that lateral root initiation is not dependent on cellular specification or differentiation of the type of vascular tissue.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
TRANSPORT, PROTEINS, EXPRESSION, LOCALIZATION, SPECIFICATION, ZEA-MAYS, ARABIDOPSIS, INITIATION, IDENTIFICATION, PERICYCLE
journal title
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
Philos. Trans. R. Soc. B-Biol. Sci.
volume
367
issue
1595
pages
1525 - 1533
Web of Science type
Article
Web of Science id
000303107900010
JCR category
BIOLOGY
JCR impact factor
6.23 (2012)
JCR rank
6/83 (2012)
JCR quartile
1 (2012)
ISSN
0962-8436
DOI
10.1098/rstb.2011.0239
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
2964995
handle
http://hdl.handle.net/1854/LU-2964995
date created
2012-07-30 12:51:46
date last changed
2012-08-07 14:24:50
@article{2964995,
  abstract     = {In Arabidopsis thaliana, lateral-root-forming competence of pericycle cells is associated with their position at the xylem poles and depends on the establishment of protoxylem-localized auxin response maxima. In maize, our histological analyses revealed an interruption of the pericycle at the xylem poles, and confirmed the earlier reported proto-phloem-specific lateral root initiation. Phloempole pericycle cells were larger and had thinner cell walls compared with the other pericycle cells, highlighting the heterogeneous character of the maize root pericycle. A maize DR5::RFP marker line demonstrated the presence of auxin response maxima in differentiating xylem cells at the root tip and in cells surrounding the proto-phloem vessels. Chemical inhibition of auxin transport indicated that the establishment of the phloem-localized auxin response maxima is crucial for lateral root formation in maize, because in their absence, random divisions of pericycle and endodermis cells occurred, not resulting in organogenesis. These data hint at an evolutionarily conserved mechanism, in which the establishment of vascular auxin response maxima is required to trigger cells in the flanking outer tissue layer for lateral root initiation. It further indicates that lateral root initiation is not dependent on cellular specification or differentiation of the type of vascular tissue.},
  author       = {Jansen, Leentje and Roberts, Ianto and De Rycke, Riet and Beeckman, Tom},
  issn         = {0962-8436},
  journal      = {PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES},
  keyword      = {TRANSPORT,PROTEINS,EXPRESSION,LOCALIZATION,SPECIFICATION,ZEA-MAYS,ARABIDOPSIS,INITIATION,IDENTIFICATION,PERICYCLE},
  language     = {eng},
  number       = {1595},
  pages        = {1525--1533},
  title        = {Phloem-associated auxin response maxima determine radial positioning of lateral roots in maize},
  url          = {http://dx.doi.org/10.1098/rstb.2011.0239},
  volume       = {367},
  year         = {2012},
}

Chicago
Jansen, Leentje, Ianto Roberts, Riet De Rycke, and Tom Beeckman. 2012. “Phloem-associated Auxin Response Maxima Determine Radial Positioning of Lateral Roots in Maize.” Philosophical Transactions of the Royal Society B-biological Sciences 367 (1595): 1525–1533.
APA
Jansen, L., Roberts, I., De Rycke, R., & Beeckman, T. (2012). Phloem-associated auxin response maxima determine radial positioning of lateral roots in maize. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, 367(1595), 1525–1533.
Vancouver
1.
Jansen L, Roberts I, De Rycke R, Beeckman T. Phloem-associated auxin response maxima determine radial positioning of lateral roots in maize. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES. 2012;367(1595):1525–33.
MLA
Jansen, Leentje, Ianto Roberts, Riet De Rycke, et al. “Phloem-associated Auxin Response Maxima Determine Radial Positioning of Lateral Roots in Maize.” PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES 367.1595 (2012): 1525–1533. Print.