Perception of UV-B by the Arabidopsis UVR8 Protein

被引：893

作者：

Rizzini, Luca ^{[1
]}

Favory, Jean-Jacques ^{[1
]}

Cloix, Catherine ^{[2
]}

Faggionato, Davide ^{[1
,3
]}

O'Hara, Andrew ^{[2
]}

Kaiserli, Eirini ^{[2
]}

Baumeister, Ralf ^{[1
,3
,4
]}

Schaefer, Eberhard ^{[1
,4
]}

Nagy, Ferenc ^{[5
,6
]}

Jenkins, Gareth I. ^{[2
]}

Ulm, Roman ^{[1
,4
,7
]}

机构：

[1] Univ Freiburg, Fac Biol, Inst Biol 2, D-79104 Freiburg, Germany

[2] Univ Glasgow, Inst Mol Cell & Syst Biol, Glasgow G12 8QQ, Lanark, Scotland

[3] Univ Freiburg, Fac Med, ZBMZ, D-79104 Freiburg, Germany

[4] Univ Freiburg, BIOSS Ctr Biol Signalling Studies, D-79104 Freiburg, Germany

[5] Biol Res Ctr, Inst Plant Biol, H-6726 Szeged, Hungary

[6] Univ Edinburgh, Sch Biol Sci, Edinburgh EH9 3JR, Midlothian, Scotland

[7] Univ Geneva, Dept Bot & Plant Biol, CH-1211 Geneva 4, Switzerland

来源：

SCIENCE | 2011年 / 332卷 / 6025期

基金：

匈牙利科学研究基金会; 英国生物技术与生命科学研究理事会;

关键词：

CHROMOSOME CONDENSATION; SIGNAL-TRANSDUCTION; RADIATION; LIGHT; PHOTOMORPHOGENESIS; COMPLEMENTATION; TRANSCRIPTION; ACCUMULATION; PROTECTION; REGULATOR;

D O I：

10.1126/science.1200660

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页码：103 / 106

页数：4

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