Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 433431
Title COP1 mediates the coordination of root and shoot growth by light through modulation of PIN10 and PIN2-dependent auxin transport in Arabidopsis.
Author(s) Sassi, M.; Lu, Y.; Dhonukshe, P.; Blilou, I.; Scheres, B.
Source Development 139 (2012). - ISSN 0950-1991 - p. 3402 - 3412.
DOI http://dx.doi.org/10.1242/dev.078212
Department(s) Plant Developmental Biology
Publication type Refereed Article in a scientific journal
Publication year 2012
Keyword(s) efflux carrier - phenotypic plasticity - plant development - cell polarity - pin proteins - thaliana - expression - hy5 - differentiation - biosynthesis
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.
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