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A local maximum in gibberellin levels regulates maize leaf growth by spatial control of cell division

Hilde Nelissen UGent, Bart Rymen UGent, Yusuke Jikumaru, Kirin Demuynck UGent, Maria Van Lijsebettens UGent, Yuji Kamiya, Dirk Inzé UGent and Gerrit Beemster UGent (2012) CURRENT BIOLOGY. 22(13). p.1183-1187
abstract
Plant growth rate is largely determined by the transition between the successive phases of cell division and expansion [1]. A key role for hormone signaling in determining this transition was inferred from genetic approaches and transcriptome analysis in the Arabidopsis root tip [2-5]. We used the developmental gradient at the maize leaf base as a model to study this transition, because it allows a direct comparison between endogenous hormone concentrations and the transitions between dividing, expanding, and mature tissue. Concentrations of auxin and cytokinins are highest in dividing tissues, whereas bioactive gibberellins (GAs) show a peak at the transition zone between the division and expansion zone. Combined metabolic and transcriptomic profiling revealed that this GA maximum is established by GA biosynthesis in the division zone (DZ) and active GA catabolism at the onset of the expansion zone. Mutants defective in GA synthesis and signaling, and transgenic plants overproducing GAs, demonstrate that altering GA levels specifically affects the size of the DZ, resulting in proportional changes in organ growth rates. This work thereby provides a novel molecular mechanism for the regulation of the transition from cell division to expansion that controls organ growth and size.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
ZEA-MAYS, ARABIDOPSIS ROOT, CYCLE PROGRESSION, ROOT-GROWTH, PLANT DEVELOPMENT, GENES, PROLIFERATION, EXPRESSION, MODULATORS, ACID
journal title
CURRENT BIOLOGY
Curr. Biol.
volume
22
issue
13
pages
1183 - 1187
Web of Science type
Article
Web of Science id
000306379600021
JCR category
BIOCHEMISTRY & MOLECULAR BIOLOGY
JCR impact factor
9.494 (2012)
JCR rank
19/288 (2012)
JCR quartile
1 (2012)
ISSN
0960-9822
DOI
10.1016/j.cub.2012.04.065
project
Biotechnology for a sustainable economy (Bio-Economy)
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
2974124
handle
http://hdl.handle.net/1854/LU-2974124
date created
2012-08-22 16:11:49
date last changed
2014-05-26 10:04:33
@article{2974124,
  abstract     = {Plant growth rate is largely determined by the transition between the successive phases of cell division and expansion [1]. A key role for hormone signaling in determining this transition was inferred from genetic approaches and transcriptome analysis in the Arabidopsis root tip [2-5]. We used the developmental gradient at the maize leaf base as a model to study this transition, because it allows a direct comparison between endogenous hormone concentrations and the transitions between dividing, expanding, and mature tissue. Concentrations of auxin and cytokinins are highest in dividing tissues, whereas bioactive gibberellins (GAs) show a peak at the transition zone between the division and expansion zone. Combined metabolic and transcriptomic profiling revealed that this GA maximum is established by GA biosynthesis in the division zone (DZ) and active GA catabolism at the onset of the expansion zone. Mutants defective in GA synthesis and signaling, and transgenic plants overproducing GAs, demonstrate that altering GA levels specifically affects the size of the DZ, resulting in proportional changes in organ growth rates. This work thereby provides a novel molecular mechanism for the regulation of the transition from cell division to expansion that controls organ growth and size.},
  author       = {Nelissen, Hilde and Rymen, Bart and Jikumaru, Yusuke and Demuynck, Kirin and Van Lijsebettens, Maria and Kamiya, Yuji and Inz{\'e}, Dirk and Beemster, Gerrit},
  issn         = {0960-9822},
  journal      = {CURRENT BIOLOGY},
  keyword      = {ZEA-MAYS,ARABIDOPSIS ROOT,CYCLE PROGRESSION,ROOT-GROWTH,PLANT DEVELOPMENT,GENES,PROLIFERATION,EXPRESSION,MODULATORS,ACID},
  language     = {eng},
  number       = {13},
  pages        = {1183--1187},
  title        = {A local maximum in gibberellin levels regulates maize leaf growth by spatial control of cell division},
  url          = {http://dx.doi.org/10.1016/j.cub.2012.04.065},
  volume       = {22},
  year         = {2012},
}

Chicago
Nelissen, Hilde, Bart Rymen, Yusuke Jikumaru, Kirin Demuynck, Maria Van Lijsebettens, Yuji Kamiya, Dirk Inzé, and Gerrit Beemster. 2012. “A Local Maximum in Gibberellin Levels Regulates Maize Leaf Growth by Spatial Control of Cell Division.” Current Biology 22 (13): 1183–1187.
APA
Nelissen, H., Rymen, B., Jikumaru, Y., Demuynck, K., Van Lijsebettens, M., Kamiya, Y., Inzé, D., et al. (2012). A local maximum in gibberellin levels regulates maize leaf growth by spatial control of cell division. CURRENT BIOLOGY, 22(13), 1183–1187.
Vancouver
1.
Nelissen H, Rymen B, Jikumaru Y, Demuynck K, Van Lijsebettens M, Kamiya Y, et al. A local maximum in gibberellin levels regulates maize leaf growth by spatial control of cell division. CURRENT BIOLOGY. 2012;22(13):1183–7.
MLA
Nelissen, Hilde, Bart Rymen, Yusuke Jikumaru, et al. “A Local Maximum in Gibberellin Levels Regulates Maize Leaf Growth by Spatial Control of Cell Division.” CURRENT BIOLOGY 22.13 (2012): 1183–1187. Print.