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Research ArticleResearch Article

Ethylene Upregulates Auxin Biosynthesis in Arabidopsis Seedlings to Enhance Inhibition of Root Cell Elongation

Ranjan Swarup, Paula Perry, Dik Hagenbeek, Dominique Van Der Straeten, Gerrit T.S. Beemster, Göran Sandberg, Rishikesh Bhalerao, Karin Ljung and Malcolm J. Bennett
The Plant Cell July 2007, 19 (7) 2186-2196; DOI: https://doi.org/10.1105/tpc.107.052100
Ranjan Swarup
School of Biosciences and Centre for Plant Integrative Biology, University of Nottingham, LE12 5RD Nottingham, United Kingdom
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Paula Perry
School of Biosciences and Centre for Plant Integrative Biology, University of Nottingham, LE12 5RD Nottingham, United KingdomDepartment of Plant Systems Biology, Flanders Institute for Biotechnology, B-9052, Ghent, BelgiumDepartment of Molecular Genetics, Ghent University, B-9052 Ghent, Belgium
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Dik Hagenbeek
Department of Molecular Genetics, Plant Hormone Signaling and Bio-imaging, Ghent University, B-9000 Ghent, Belgium
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Dominique Van Der Straeten
Department of Molecular Genetics, Plant Hormone Signaling and Bio-imaging, Ghent University, B-9000 Ghent, Belgium
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Gerrit T.S. Beemster
Department of Plant Systems Biology, Flanders Institute for Biotechnology, B-9052, Ghent, BelgiumDepartment of Molecular Genetics, Ghent University, B-9052 Ghent, Belgium
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Göran Sandberg
Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, SE-901 87 Umeå, Sweden
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Rishikesh Bhalerao
Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Sveriges Lantbruksuniversitet, SE-901 83 Umeå, Sweden
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Karin Ljung
Department of Forest Genetics and Plant Physiology, Umeå Plant Science Centre, Sveriges Lantbruksuniversitet, SE-901 83 Umeå, Sweden
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Malcolm J. Bennett
School of Biosciences and Centre for Plant Integrative Biology, University of Nottingham, LE12 5RD Nottingham, United Kingdom
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Figure 8.

Figure 8.
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Figure 8.

Model for Auxin Action during Ethylene-Regulated Root Growth.

The model provides a spatial framework on which to place auxin components required for ethylene responses in roots. The schematic diagram of the Arabidopsis root apex is overlaid with the sites of action of auxin biosynthesis (WEI2/ASA1 and WEI7/ASB1) and transport (AUX1) components required for ethylene inhibition of root growth. Small arrows denote the basipetal flow of auxin from the root apex via the lateral root cap to the elongation zone. Sites of ethylene-responsive gene expression are denoted by large horizontal arrows. We also highlight that the dominant gain-of-function mutation axr3-1/iaa17 can disrupt ethylene inhibition of root growth in elongation zone tissues. Vertical arrows either represent the time required or distance moved by root cells as they progress through meristematic and elongation zones.

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The Plant Cell: 31 (11)
The Plant Cell
Vol. 31, Issue 11
Nov 2019
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Ethylene Upregulates Auxin Biosynthesis in Arabidopsis Seedlings to Enhance Inhibition of Root Cell Elongation
Ranjan Swarup, Paula Perry, Dik Hagenbeek, Dominique Van Der Straeten, Gerrit T.S. Beemster, Göran Sandberg, Rishikesh Bhalerao, Karin Ljung, Malcolm J. Bennett
The Plant Cell Jul 2007, 19 (7) 2186-2196; DOI: 10.1105/tpc.107.052100

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Ethylene Upregulates Auxin Biosynthesis in Arabidopsis Seedlings to Enhance Inhibition of Root Cell Elongation
Ranjan Swarup, Paula Perry, Dik Hagenbeek, Dominique Van Der Straeten, Gerrit T.S. Beemster, Göran Sandberg, Rishikesh Bhalerao, Karin Ljung, Malcolm J. Bennett
The Plant Cell Jul 2007, 19 (7) 2186-2196; DOI: 10.1105/tpc.107.052100
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