Artículo
Abstract:
Plants are capable of perceiving changes in the light environment and finely adjust their growth and development. Reductions of red to far-red ratio (R:FR) generated by an increase of the plant canopy above the plant are sensed by the phytochrome system triggering the shade-avoidance syndrome (SAS) that includes elongation of vegetative structures, reduction of branching and acceleration of flowering. Albeit the SAS is a strategy of major adaptative significance in plant communities, involving if massive changes in gene expression, our knowledge of the SAS signaling network is still fragmented. By a selection and characterization of a T-DNA mutant with a long hypocotyl under shade, we identified BBX21, a protein with two B-box domains, that is involved in the SAS. BBX21 belongs to a small eight member family of B-box-containing proteins with both opposite and additive functions in the SAS signaling. BBX21 downregulates the gene expression of auxin, brassinosteroid and ethylene signaling pathway components under shade. Furthermore BBX21 is a transcription factor that interacts genetically with COP1. We propose a model in which a dynamic balance of positive and negative B-box transcriptional regulators acts as a gas-and-brake mechanism into the COP1 signaling to regulate the expression of SAS. © 2011 Landes Bioscience.
Registro:
| Documento: | Artículo |
| Título: | Function of B-Box proteins under shade |
| Autor: | Crocco, C.D.; Holm, M.; Botto, J.F.; Yanovsky, M.J. |
| Filiación: | IFEVA, Facultad de Agronomía, Universidad de Buenos Aires, Consejo Nacional de Investigaciones Cientifcas y Tecnicas, Gothenburg, Sweden Department of Plant and Environmental Sciences, Gothenburg University, Gothenburg, Sweden Fundación Instituto Leloir, Instituto de Investigaciones Bioquímicas Buenos Aires, Consejo Nacional de Investigaciones Cientificas y Tecnica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina |
| Palabras clave: | B-box-containing proteins (BBX); Canopy shade; COP1; Shade-avoidance syndrome (SAS) |
| Año: | 2011 |
| Volumen: | 6 |
| Número: | 1 |
| DOI: | http://dx.doi.org/10.1111/j.1365-313X.2010.04360.x. |
| Título revista: | Plant Signaling and Behavior |
| Título revista abreviado: | Plant. Signal. Behav. |
| ISSN: | 15592316 |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15592316_v6_n1_p_Crocco |
Referencias:
- Franklin, K.A., Shade avoidance (2008) New Phytol, 179, pp. 930-944
- Carabelli, M., Morelli, G., Whitelam, G., Ruberti, I., Twilight-zone and canopy shade induction of the Athb-2 homeobox gene in green plants (1996) Proc Natl-Acad Sci USA, 93, pp. 3530-3535
- Lorrain, S., Allen, T., Duek, P.D., Whitelam, G.C., Fankhauser, C., Phytochrome-mediated inhibition of shade avoidance involves degradation of growth-promoting bHLH transcription factors (2008) Plant J, 53, pp. 312-323
- Sessa, G., Carabelli, M., Sassi, M., Ciolfi, A., Possenti, M., Mittempergher, F., A dynamic balance between gene activation and repression regulates the shade avoidance response in Arabidopsis (2005) Genes Dev, 19, pp. 2811-2815
- Roig-Villanova, I., Bou-Torrent, J., Galstyan, A., Carretero-Paulet, L., Portolés, S., Rodríguez-Concepción, M., Martínez-García, J.F., Interaction of shade avoidance and auxin responses: A role for two novel atypical bHLH proteins (2007) EMBO J, 26, pp. 4756-4767
- Achard, P., Gusti, A., Cheminant, S., Alioua, M., Dhondt, S., Coppens, F., Gibberellin signaling controls cell proliferation rate in Arabidopsis (2009) Curr Biol, 19, pp. 1188-1193
- Djakovic-Petrovic, T., de Wit, M., Voesenek, L.A., Pierik, R., DELLA protein function in growth responses to canopy signals (2007) Plant J, 51, pp. 117-126
- McNellis, T.W., von Arnim, A.G., Deng, X.W., Over expression of Arabidopsis COP1 results in partial suppression of light-mediated development: Evidence for a light-inactivable repressor of photomor-phogenesis (1994) Plant Cell, 6, pp. 1391-1400
- Roig-Villanova, I., Bou, J., Sorin, C., Devlin, P.F., Martinez-Garcia, J.F., Identification of primary target genes of phytochrome signaling. Early transcriptional control during shade avoidance responses in Arabidopsis (2006) Plant Physiol, 141, pp. 85-96
- Kumagai, T., Ito, S., Nakamichi, N., Niwa, Y., Murakami, M., Yamashino, T., Mizuno, T., The common function of a novel subfamily of B-box zinc finger proteins with reference to circadian-associated events in Arabidopsis thaliana (2008) Biosci Biotechnol Biochem, 72, pp. 1539-1549
- Datta, S., Hettiarachchi, C., Johansson, H., Holm, M., SALT TOLERANCE HOMOLOG2, a B-box protein in Arabidopsis that activates transcription and positively regulates light-mediated development (2007) Plant Cell, 19, pp. 3242-3255
- Datta, S., Johansson, H., Hettiarachchi, C., Irigoyen, M.L., Desai, M., Rubio, V., Holm, M., LZF1/SALT TOLERANCE HOMOLOG3, an Arabidopsis B-box protein involved in light-dependent development and gene expression, undergoes COP1-mediated ubiquiti-nation (2008) Plant Cell, 20, pp. 2324-2338
- Khanna, R., Kronmiller, B., Maszle, D.R., Coupland, G., Holm, M., Mizuno, T., Wu, S.H., The Arabidopsis B-box zinc finger family (2009) Plant Cell, 21, pp. 3416-3420
- Crocco, C.D., Holm, M., Yanovsky, M.J., Botto, J.F., AtBBX21 andCOP1 genetically interact in the regulation of shade avoidance (2010) Plant Journal, 64, pp. 551-565
- Nemhauser, J.L., Hong, F., Chory, J., Different plant hormones regulate similar processes through largely non overlapping transcriptional responses (2006) Cell, 126, pp. 467-475
Citas:
---------- APA ----------
Crocco, C.D., Holm, M., Botto, J.F. & Yanovsky, M.J. (2011) . Function of B-Box proteins under shade. Plant Signaling and Behavior, 6(1).http://dx.doi.org/10.1111/j.1365-313X.2010.04360.x.
---------- CHICAGO ----------
Crocco, C.D., Holm, M., Botto, J.F., Yanovsky, M.J. "Function of B-Box proteins under shade" . Plant Signaling and Behavior 6, no. 1 (2011).http://dx.doi.org/10.1111/j.1365-313X.2010.04360.x.
---------- MLA ----------
Crocco, C.D., Holm, M., Botto, J.F., Yanovsky, M.J. "Function of B-Box proteins under shade" . Plant Signaling and Behavior, vol. 6, no. 1, 2011.http://dx.doi.org/10.1111/j.1365-313X.2010.04360.x.
---------- VANCOUVER ----------
Crocco, C.D., Holm, M., Botto, J.F., Yanovsky, M.J. Function of B-Box proteins under shade. Plant. Signal. Behav. 2011;6(1).http://dx.doi.org/10.1111/j.1365-313X.2010.04360.x.
