Transcription factor WRKY23 assists auxin distribution patterns during Arabidopsis root development through local control on flavonol biosynthesis

W. Grunewald, I. De Smet, D. Lewis, C. Löfke, L. Jansen, G. Goeminne, R. Vanden Bossche, M. Karimi, B. De Rybel, B. Vanholme, T. Teichmann, W. Boerjan, M. Van Montagu, G. Gheysen, G. Muday, J. Friml, T. Beeckman, PNAS 109 (2012) 1554–1559.

Download
No fulltext has been uploaded. References only!

Journal Article | Published
Author
Grunewald, Wim; De Smet, Ive; Lewis, Daniel R; Löfke, Christian; Jansen, Leentje; Goeminne, Geert; Vanden Bossche, Robin; Karimi, Mansour; De Rybel, Bert; Vanholme, Bartel; Teichmann, Thomas; Boerjan, Wout
All
Abstract
Gradients of the plant hormone auxin, which depend on its active intercellular transport, are crucial for the maintenance of root meristematic activity. This directional transport is largely orchestrated by a complex interaction of specific influx and efflux carriers that mediate the auxin flow into and out of cells, respectively. Besides these transport proteins, plant-specific polyphenolic compounds knownasflavonols have beenshownto act as endogenous regulators of auxin transport. However, only limited information is available on how flavonol synthesis is developmentally regulated. Using reduction-of-function and overexpression approaches in parallel, we demonstrate that the WRKY23 transcription factor is needed for proper root growth and development by stimulating the local biosynthesis of flavonols. The expression of WRKY23 itself is controlled by auxin through the AUXIN RESPONSE FACTOR 7 (ARF7) and ARF19 transcriptional response pathway. Our results suggest a model in which WRKY23 is part of a transcriptional feedback loop of auxin on its own transport through local regulation of flavonol biosynthesis.
Publishing Year
Date Published
2012-01-31
Journal Title
PNAS
Volume
109
Issue
5
Page
1554 - 1559
IST-REx-ID

Cite this

Grunewald W, De Smet I, Lewis D, et al. Transcription factor WRKY23 assists auxin distribution patterns during Arabidopsis root development through local control on flavonol biosynthesis. PNAS. 2012;109(5):1554-1559. doi:10.1073/pnas.1121134109
Grunewald, W., De Smet, I., Lewis, D., Löfke, C., Jansen, L., Goeminne, G., … Beeckman, T. (2012). Transcription factor WRKY23 assists auxin distribution patterns during Arabidopsis root development through local control on flavonol biosynthesis. PNAS, 109(5), 1554–1559. https://doi.org/10.1073/pnas.1121134109
Grunewald, Wim, Ive De Smet, Daniel Lewis, Christian Löfke, Leentje Jansen, Geert Goeminne, Robin Vanden Bossche, et al. “Transcription Factor WRKY23 Assists Auxin Distribution Patterns during Arabidopsis Root Development through Local Control on Flavonol Biosynthesis.” PNAS 109, no. 5 (2012): 1554–59. https://doi.org/10.1073/pnas.1121134109.
W. Grunewald et al., “Transcription factor WRKY23 assists auxin distribution patterns during Arabidopsis root development through local control on flavonol biosynthesis,” PNAS, vol. 109, no. 5, pp. 1554–1559, 2012.
Grunewald W, De Smet I, Lewis D, Löfke C, Jansen L, Goeminne G, Vanden Bossche R, Karimi M, De Rybel B, Vanholme B, Teichmann T, Boerjan W, Van Montagu M, Gheysen G, Muday G, Friml J, Beeckman T. 2012. Transcription factor WRKY23 assists auxin distribution patterns during Arabidopsis root development through local control on flavonol biosynthesis. PNAS. 109(5), 1554–1559.
Grunewald, Wim, et al. “Transcription Factor WRKY23 Assists Auxin Distribution Patterns during Arabidopsis Root Development through Local Control on Flavonol Biosynthesis.” PNAS, vol. 109, no. 5, National Academy of Sciences, 2012, pp. 1554–59, doi:10.1073/pnas.1121134109.

Export

Marked Publications

Open Data IST Research Explorer

Search this title in

Google Scholar