Photoreceptor-mediated bending towards UV-B in Arabidopsis
- Author
- Filip Vandenbussche (UGent) , Kimberley Tilbrook, Ana Carolina Fierro, Kathleen Marchal (UGent) , Dirk Poelman (UGent) , Dominique Van Der Straeten (UGent) and Roman Ulm
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- 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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Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-5644485
- MLA
- Vandenbussche, Filip, et al. “Photoreceptor-Mediated Bending towards UV-B in Arabidopsis.” MOLECULAR PLANT, vol. 7, no. 6, 2014, pp. 1041–52, doi:10.1093/mp/ssu039.
- APA
- Vandenbussche, F., 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. https://doi.org/10.1093/mp/ssu039
- Chicago author-date
- 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): 1041–52. https://doi.org/10.1093/mp/ssu039.
- Chicago author-date (all authors)
- 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. doi:10.1093/mp/ssu039.
- 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.
- IEEE
- [1]F. Vandenbussche et al., “Photoreceptor-mediated bending towards UV-B in Arabidopsis,” MOLECULAR PLANT, vol. 7, no. 6, pp. 1041–1052, 2014.
@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}}, 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}}, language = {{eng}}, number = {{6}}, pages = {{1041--1052}}, title = {{Photoreceptor-mediated bending towards UV-B in Arabidopsis}}, url = {{http://doi.org/10.1093/mp/ssu039}}, volume = {{7}}, year = {{2014}}, }
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