Photoreceptor-Mediated Bending towards UV-B in Arabidopsis

被引：68

作者：

Vandenbussche, Filip ^{[1
]}

Tilbrook, Kimberley ^{[2
]}

Fierro, Ana Carolina ^{[3
]}

Marchal, Kathleen ^{[3
,4
,5
]}

Poelman, Dirk ^{[6
]}

Van Der Straeten, Dominique ^{[1
]}

Ulm, Roman ^{[2
]}

机构：

[1] Univ Ghent, Dept Physiol, Lab Funct Plant Biol, Fac Sci, B-9000 Ghent, Belgium

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

[3] Katholieke Univ Leuven, Dept Microbial & Mol Syst, Fac Biosci Engn, B-3001 Heverlee, Belgium

[4] Univ Ghent, Fac Sci, Dept Plant Biotechnol & Bioinformat, B-9000 Ghent, Belgium

[5] Univ Ghent, Fac Sci, IMinds, Dept Informat Technol, B-9000 Ghent, Belgium

[6] Univ Ghent, Fac Sci, Dept Solid State Sci, Lumilab, B-9000 Ghent, Belgium

来源：

MOLECULAR PLANT | 2014年 / 7卷 / 06期

基金：

欧洲研究理事会; 瑞士国家科学基金会;

关键词：

phototropism; UV-B; auxin; UVR8; Arabidopsis; DEPENDENT AUXIN GRADIENTS; APICAL HOOK DEVELOPMENT; SIGNALING PATHWAYS; BLUE-LIGHT; ARTIFICIAL MICRORNAS; GROWTH-RESPONSES; GENE-EXPRESSION; PHOTOTROPISM; THALIANA; ULTRAVIOLET;

D O I：

10.1093/mp/ssu039

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Plants reorient their growth towards light to optimize photosynthetic light capture-a process known as phototropism. Phototropins are the photoreceptors essential for phototropic growth towards blue and ultraviolet-A (UV-A) light. Here we detail a phototropic response towards UV-B in etiolated Arabidopsis seedlings. We report that early differential growth is mediated by phototropins but clear phototropic bending to UV-B is maintained in phot1 phot2 double mutants. We further show that this phototropin-independent phototropic response to UV-B requires the UV-B photoreceptor UVR8. Broad UV-B-mediated repression of auxin-responsive genes suggests that UVR8 regulates directional bending by affecting auxin signaling. Kinetic analysis shows that UVR8-dependent directional bending occurs later than the phototropin response. We conclude that plants may use the full short-wavelength spectrum of sunlight to efficiently reorient photosynthetic tissue with incoming light.

引用

页码：1041 / 1052

页数：12

共 59 条

[1] Auxin influx carriers stabilize phyllotactic patterning [J].

Bainbridge, Katherine ;

Guyomarc'h, Soazig ;

Bayer, Emmanuelle ;

Swarup, Ranjan ;

Bennett, Malcolm ;

Mandel, Therese ;

Kuhlemeier, Cris .

GENES & DEVELOPMENT, 2008, 22 (06) :810-823

[2] AN ACTION SPECTRUM IN THE BLUE AND ULTRAVIOLET FOR PHOTOTROPISM IN ALFALFA [J].

BASKIN, TI ;

IINO, M .

PHOTOCHEMISTRY AND PHOTOBIOLOGY, 1987, 46 (01) :127-136

[3]

Benjamins R, 2001, DEVELOPMENT, V128, P4057

[4] Local, efflux-dependent auxin gradients as a common module for plant organ formation [J].

Benková, E ;

Michniewicz, M ;

Sauer, M ;

Teichmann, T ;

Seifertová, D ;

Jürgens, G ;

Friml, J .

CELL, 2003, 115 (05) :591-602

[5] Phototropism: Some History, Some Puzzles, and a Look Ahead [J].

Briggs, Winslow R. .

PLANT PHYSIOLOGY, 2014, 164 (01) :13-23

[6] PHOTOTROPIC AUXIN REDISTRIBUTION IN CORN COLEOPTILES [J].

BRIGGS, WR ;

TOCHER, RD ;

WILSON, JF .

SCIENCE, 1957, 126 (3266) :210-212

[7] A UV-B-specific signaling component orchestrates plant UV protection [J].

Brown, BA ;

Cloix, C ;

Jiang, GH ;

Kaiserli, E ;

Herzyk, P ;

Kliebenstein, DJ ;

Jenkins, GI .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2005, 102 (50) :18225-18230

[8]

Villalobos LIAC, 2012, NAT CHEM BIOL, V8, P477, DOI [10.1038/NCHEMBIO.926, 10.1038/nchembio.926]

[9] Hypocotyl Transcriptome Reveals Auxin Regulation of Growth-Promoting Genes through GA-Dependent and -Independent Pathways [J].

Chapman, Elisabeth J. ;

Greenham, Kathleen ;

Castillejo, Cristina ;

Sartor, Ryan ;

Bialy, Agniezska ;

Sun, Taiping ;

Estelle, Mark .

PLOS ONE, 2012, 7 (05)

[10] Arabidopsis NPH1:: A flavoprotein with the properties of a photoreceptor for phototropism [J].

Christie, JM ;

Reymond, P ;

Powell, GK ;

Bernasconi, P ;

Raibekas, AA ;

Liscum, E ;

Briggs, WR .

SCIENCE, 1998, 282 (5394) :1698-1701

← 1 2 3 4 5 6 →