Perception of UV-B by the Arabidopsis UVR8 Protein

Luca Rizzini; Jean-Jacques Favory; Catherine Cloix; Davide Faggionato; Andrew O'Hara; Eirini Kaiserli; Ralf Baumeister; Eberhard Schaefer; Ferenc Nagy; Gareth I. Jenkins; Roman Ulm

doi:10.1126/science.1200660

Perception of UV-B by the Arabidopsis UVR8 Protein

Luca Rizzini, Jean-Jacques Favory, Catherine Cloix, Davide Faggionato, Andrew O'Hara, Eirini Kaiserli, Ralf Baumeister, Eberhard Schaefer, Ferenc Nagy, Gareth I. Jenkins, Roman Ulm

School of Biological Sciences

Research output: Contribution to journal › Article › peer-review

Abstract

To optimize their growth and survival, plants perceive and respond to ultraviolet-B ( UV-B) radiation. However, neither the molecular identity of the UV-B photoreceptor nor the photoperception mechanism is known. Here we show that dimers of the UVR8 protein perceive UV-B, probably by a tryptophan-based mechanism. Absorption of UV-B induces instant monomerization of the photoreceptor and interaction with COP1, the central regulator of light signaling. Thereby this signaling cascade controlled by UVR8 mediates UV-B photomorphogenic responses securing plant acclimation and thus promotes survival in sunlight.

Original language	English
Pages (from-to)	103-106
Number of pages	4
Journal	Science
Volume	332
Issue number	6025
DOIs	https://doi.org/10.1126/science.1200660
Publication status	Published - 1 Apr 2011

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title = "Perception of UV-B by the Arabidopsis UVR8 Protein",

abstract = "To optimize their growth and survival, plants perceive and respond to ultraviolet-B ( UV-B) radiation. However, neither the molecular identity of the UV-B photoreceptor nor the photoperception mechanism is known. Here we show that dimers of the UVR8 protein perceive UV-B, probably by a tryptophan-based mechanism. Absorption of UV-B induces instant monomerization of the photoreceptor and interaction with COP1, the central regulator of light signaling. Thereby this signaling cascade controlled by UVR8 mediates UV-B photomorphogenic responses securing plant acclimation and thus promotes survival in sunlight.",

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AU - Rizzini, Luca

AU - Favory, Jean-Jacques

AU - Cloix, Catherine

AU - Faggionato, Davide

AU - O'Hara, Andrew

AU - Kaiserli, Eirini

AU - Baumeister, Ralf

AU - Schaefer, Eberhard

AU - Nagy, Ferenc

AU - Jenkins, Gareth I.

AU - Ulm, Roman

PY - 2011/4/1

Y1 - 2011/4/1

N2 - To optimize their growth and survival, plants perceive and respond to ultraviolet-B ( UV-B) radiation. However, neither the molecular identity of the UV-B photoreceptor nor the photoperception mechanism is known. Here we show that dimers of the UVR8 protein perceive UV-B, probably by a tryptophan-based mechanism. Absorption of UV-B induces instant monomerization of the photoreceptor and interaction with COP1, the central regulator of light signaling. Thereby this signaling cascade controlled by UVR8 mediates UV-B photomorphogenic responses securing plant acclimation and thus promotes survival in sunlight.

AB - To optimize their growth and survival, plants perceive and respond to ultraviolet-B ( UV-B) radiation. However, neither the molecular identity of the UV-B photoreceptor nor the photoperception mechanism is known. Here we show that dimers of the UVR8 protein perceive UV-B, probably by a tryptophan-based mechanism. Absorption of UV-B induces instant monomerization of the photoreceptor and interaction with COP1, the central regulator of light signaling. Thereby this signaling cascade controlled by UVR8 mediates UV-B photomorphogenic responses securing plant acclimation and thus promotes survival in sunlight.

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VL - 332

SP - 103

EP - 106

JO - Science

JF - Science

IS - 6025

ER -

Perception of UV-B by the Arabidopsis UVR8 Protein

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