Function of B - BOX proteins under shade
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]...
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2011Crocco2.pdf LINK AL EDITOR |
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| 245 | 1 | 0 | |a Function of B - BOX proteins under shade |
| 520 | |a 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 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 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 down-regulates 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. | ||
| 653 | 0 | |a BRASSINOLIDE | |
| 653 | 0 | |a CHOLESTANOL | |
| 653 | 0 | |a ETHYLENE | |
| 653 | 0 | |a ETHYLENE DERIVATIVE | |
| 653 | 0 | |a HETEROCYCLIC STEROID | |
| 653 | 0 | |a INDOLEACETIC ACID DERIVATIVE | |
| 653 | 0 | |a VEGETABLE PROTEIN | |
| 653 | 0 | |a CHEMISTRY | |
| 653 | 0 | |a DARKNESS | |
| 653 | 0 | |a DOWN REGULATION | |
| 653 | 0 | |a GENE EXPRESSION REGULATION | |
| 653 | 0 | |a GENETICS | |
| 653 | 0 | |a GROWTH, DEVELOPMENT AND AGING | |
| 653 | 0 | |a METABOLISM | |
| 653 | 0 | |a PHENOTYPE | |
| 653 | 0 | |a PLANT | |
| 653 | 0 | |a PROTEIN TERTIARY STRUCTURE | |
| 653 | 0 | |a SIGNAL TRANSDUCTION | |
| 653 | 0 | |a CHOLESTANOLS | |
| 653 | 0 | |a DOWN-REGULATION | |
| 653 | 0 | |a ETHYLENES | |
| 653 | 0 | |a INDOLEACETIC ACIDS | |
| 653 | 0 | |a PLANT PROTEINS | |
| 653 | 0 | |a PLANTS | |
| 653 | 0 | |a PROTEIN STRUCTURE, TERTIARY | |
| 653 | 0 | |a STEROIDS, HETEROCYCLIC | |
| 700 | 1 | |9 37590 |a Crocco, Carlos Daniel | |
| 700 | 1 | |9 69361 |a Holm, Magnus | |
| 700 | 1 | |9 11465 |a Yanovsky, Marcelo J. | |
| 700 | 1 | |9 65609 |a Botto, Javier Francisco | |
| 773 | |t Plant signaling and behavior |g vol.6, no.1 (2011), p.101-104 | ||
| 856 | |u http://ri.agro.uba.ar/files/intranet/articulo/2011Crocco2.pdf |i En reservorio |q application/pdf |f 2011Crocco2 |x MIGRADOS2018 COMBINADOS | ||
| 856 | |u http://www.landesbioscience.com/ |z LINK AL EDITOR | ||
| 942 | 0 | 0 | |c ARTICULO |
| 942 | 0 | 0 | |c ENLINEA |
| 976 | |a AAG | ||