Please use this identifier to cite or link to this item:
Title: COP1 mediates the coordination of root and shoot growth by light through modulation of PIN1- and PIN2-dependent auxin transport in Arabidopsis
Authors: Sassi, M.
Lu, Y.
Zhang, Y. 
Wang, J.
Dhonukshe, P.
Blilou, I.
Dai, M.
Li, J.
Gong, X.
Jaillais, Y.
Yu, X.
Traas, J.
Ruberti, I.
Wang, H.
Scheres, B.
Vernoux, T.
Xu, J. 
Keywords: Arabidopsis
Auxin transport
Root growth
Issue Date: 15-Sep-2012
Citation: Sassi, M., Lu, Y., Zhang, Y., Wang, J., Dhonukshe, P., Blilou, I., Dai, M., Li, J., Gong, X., Jaillais, Y., Yu, X., Traas, J., Ruberti, I., Wang, H., Scheres, B., Vernoux, T., Xu, J. (2012-09-15). COP1 mediates the coordination of root and shoot growth by light through modulation of PIN1- and PIN2-dependent auxin transport in Arabidopsis. Development (Cambridge) 139 (18) : 3402-3412. ScholarBank@NUS Repository.
Abstract: When a plant germinates in the soil, elongation of stem-like organs is enhanced whereas leaf and root growth is inhibited. How these differential growth responses are orchestrated by light and integrated at the organismal level to shape the plant remains to be elucidated. Here, we show that light signals through the master photomorphogenesis repressor COP1 to coordinate root and shoot growth in Arabidopsis. In the shoot, COP1 regulates shoot-to-root auxin transport by controlling the transcription of the auxin efflux carrier gene PIN-FORMED1 (PIN1), thus appropriately tuning shoot-derived auxin levels in the root. This in turn directly influences root elongation and adapts auxin transport and cell proliferation in the root apical meristem by modulating PIN1 and PIN2 intracellular distribution in the root in a COP1-dependent fashion, thus permitting a rapid and precise tuning of root growth to the light environment. Our data identify auxin as a long-distance signal in developmental adaptation to light and illustrate how spatially separated control mechanisms can converge on the same signaling system to coordinate development at the whole plant level. © 2012.
Source Title: Development (Cambridge)
ISSN: 09501991
DOI: 10.1242/dev.078212
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Jan 31, 2023


checked on Jan 24, 2023

Page view(s)

checked on Jan 26, 2023

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.