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Photoreceptor-mediated bending towards UV-B in Arabidopsis

(2014) MOLECULAR PLANT. 7(6). p.1041-1052
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Bioinformatics: from nucleotids to networks (N2N)
Abstract
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.
Keywords
DEPENDENT AUXIN GRADIENTS, ULTRAVIOLET, Arabidopsis, THALIANA, APICAL HOOK DEVELOPMENT, SIGNALING PATHWAYS, BLUE-LIGHT, ARTIFICIAL MICRORNAS, GROWTH-RESPONSES, IBCN, GENE-EXPRESSION, PHOTOTROPISM, auxin, UV-B, UVR8, phototropism

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Chicago
Vandenbussche, Filip, Kimberley Tilbrook, Ana Carolina Fierro, Kathleen Marchal, Dirk Poelman, Dominique Van Der Straeten, and Roman Ulm. 2014. “Photoreceptor-mediated Bending Towards UV-B in Arabidopsis.” Molecular Plant 7 (6): 1041–1052.
APA
Vandenbussche, Filip, Tilbrook, K., Fierro, A. C., Marchal, K., Poelman, D., Van Der Straeten, D., & Ulm, R. (2014). Photoreceptor-mediated bending towards UV-B in Arabidopsis. MOLECULAR PLANT, 7(6), 1041–1052.
Vancouver
1.
Vandenbussche F, Tilbrook K, Fierro AC, Marchal K, Poelman D, Van Der Straeten D, et al. Photoreceptor-mediated bending towards UV-B in Arabidopsis. MOLECULAR PLANT. 2014;7(6):1041–52.
MLA
Vandenbussche, Filip, Kimberley Tilbrook, Ana Carolina Fierro, et al. “Photoreceptor-mediated Bending Towards UV-B in Arabidopsis.” MOLECULAR PLANT 7.6 (2014): 1041–1052. Print.
@article{5644485,
  abstract     = {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.},
  author       = {Vandenbussche, Filip and Tilbrook, Kimberley and Fierro, Ana Carolina and Marchal, Kathleen and Poelman, Dirk and Van Der Straeten, Dominique and Ulm, Roman},
  issn         = {1674-2052},
  journal      = {MOLECULAR PLANT},
  keyword      = {DEPENDENT AUXIN GRADIENTS,ULTRAVIOLET,Arabidopsis,THALIANA,APICAL HOOK DEVELOPMENT,SIGNALING PATHWAYS,BLUE-LIGHT,ARTIFICIAL MICRORNAS,GROWTH-RESPONSES,IBCN,GENE-EXPRESSION,PHOTOTROPISM,auxin,UV-B,UVR8,phototropism},
  language     = {eng},
  number       = {6},
  pages        = {1041--1052},
  title        = {Photoreceptor-mediated bending towards UV-B in Arabidopsis},
  url          = {http://dx.doi.org/10.1093/mp/ssu039},
  volume       = {7},
  year         = {2014},
}

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