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Ethylene regulates root growth through effects on auxin biosynthesis and transport-dependent auxin distribution

Kamil Ruzicka UGent, Karin Ljung, Steffen Vanneste UGent, Radka Podhorská, Tom Beeckman UGent, Jiri Friml UGent and Eva Benkova UGent (2007) PLANT CELL. 19(7). p.2197-2212
abstract
In plants, each developmental process integrates a network of signaling events that are regulated by different phytohormones, and interactions among hormonal pathways are essential to modulate their effect. Continuous growth of roots results from the postembryonic activity of cells within the root meristem that is controlled by the coordinated action of several phytohormones, including auxin and ethylene. Although their interaction has been studied intensively, the molecular and cellular mechanisms underlying this interplay are unknown. We show that the effect of ethylene on root growth is largely mediated by the regulation of the auxin biosynthesis and transport-dependent local auxin distribution. Ethylene stimulates auxin biosynthesis and basipetal auxin transport toward the elongation zone, where it activates a local auxin response leading to inhibition of cell elongation. Consistently, in mutants affected in auxin perception or basipetal auxin transport, ethylene cannot activate the auxin response nor regulate the root growth. In addition, ethylene modulates the transcription of several components of the auxin transport machinery. Thus, ethylene achieves a local activation of the auxin signaling pathway and regulates root growth by both stimulating the auxin biosynthesis and by modulating the auxin transport machinery.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
RESPONSE PATHWAY, PLANT DEVELOPMENT, CELL ELONGATION, SIGNAL-TRANSDUCTION, INSENSITIVE MUTANTS, HYPOCOTYL ELONGATION, ARABIDOPSIS-THALIANA, BOX PROTEIN TIR1, OF-FUNCTION MUTATION, GENE FAMILY-MEMBERS
journal title
PLANT CELL
Plant Cell
volume
19
issue
7
pages
2197 - 2212
Web of Science type
Article
Web of Science id
000249020800012
JCR category
PLANT SCIENCES
JCR impact factor
9.653 (2007)
JCR rank
3/149 (2007)
JCR quartile
1 (2007)
ISSN
1040-4651
DOI
10.1105/tpc.107.052126
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
409509
handle
http://hdl.handle.net/1854/LU-409509
date created
2008-05-15 18:58:00
date last changed
2012-12-18 13:51:05
@article{409509,
  abstract     = {In plants, each developmental process integrates a network of signaling events that are regulated by different phytohormones, and interactions among hormonal pathways are essential to modulate their effect. Continuous growth of roots results from the postembryonic activity of cells within the root meristem that is controlled by the coordinated action of several phytohormones, including auxin and ethylene. Although their interaction has been studied intensively, the molecular and cellular mechanisms underlying this interplay are unknown. We show that the effect of ethylene on root growth is largely mediated by the regulation of the auxin biosynthesis and transport-dependent local auxin distribution. Ethylene stimulates auxin biosynthesis and basipetal auxin transport toward the elongation zone, where it activates a local auxin response leading to inhibition of cell elongation. Consistently, in mutants affected in auxin perception or basipetal auxin transport, ethylene cannot activate the auxin response nor regulate the root growth. In addition, ethylene modulates the transcription of several components of the auxin transport machinery. Thus, ethylene achieves a local activation of the auxin signaling pathway and regulates root growth by both stimulating the auxin biosynthesis and by modulating the auxin transport machinery.},
  author       = {Ruzicka, Kamil and Ljung, Karin and Vanneste, Steffen and Podhorsk{\'a}, Radka and Beeckman, Tom and Friml, Jiri and Benkova, Eva},
  issn         = {1040-4651},
  journal      = {PLANT CELL},
  keyword      = {RESPONSE PATHWAY,PLANT DEVELOPMENT,CELL ELONGATION,SIGNAL-TRANSDUCTION,INSENSITIVE MUTANTS,HYPOCOTYL ELONGATION,ARABIDOPSIS-THALIANA,BOX PROTEIN TIR1,OF-FUNCTION MUTATION,GENE FAMILY-MEMBERS},
  language     = {eng},
  number       = {7},
  pages        = {2197--2212},
  title        = {Ethylene regulates root growth through effects on auxin biosynthesis and transport-dependent auxin distribution},
  url          = {http://dx.doi.org/10.1105/tpc.107.052126},
  volume       = {19},
  year         = {2007},
}

Chicago
Ruzicka, Kamil, Karin Ljung, Steffen Vanneste, Radka Podhorská, Tom Beeckman, Jiri Friml, and Eva Benkova. 2007. “Ethylene Regulates Root Growth Through Effects on Auxin Biosynthesis and Transport-dependent Auxin Distribution.” Plant Cell 19 (7): 2197–2212.
APA
Ruzicka, K., Ljung, K., Vanneste, S., Podhorská, R., Beeckman, T., Friml, J., & Benkova, E. (2007). Ethylene regulates root growth through effects on auxin biosynthesis and transport-dependent auxin distribution. PLANT CELL, 19(7), 2197–2212.
Vancouver
1.
Ruzicka K, Ljung K, Vanneste S, Podhorská R, Beeckman T, Friml J, et al. Ethylene regulates root growth through effects on auxin biosynthesis and transport-dependent auxin distribution. PLANT CELL. 2007;19(7):2197–212.
MLA
Ruzicka, Kamil, Karin Ljung, Steffen Vanneste, et al. “Ethylene Regulates Root Growth Through Effects on Auxin Biosynthesis and Transport-dependent Auxin Distribution.” PLANT CELL 19.7 (2007): 2197–2212. Print.