Physiological and molecular mechanisms underlying the integration of light and temperature cues in Arabidopsis thaliana seeds
The relief of dormancy and the promotion of seed germination are of extreme importance for a successful seedling establishment. Although alternating temperatures and light are signals promoting the relief of seed dormancy, the underlying mechanisms of their interaction in seeds are scarcely known. B...
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| Otros Autores: | , , , , |
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| Formato: | Artículo |
| Lenguaje: | Inglés |
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| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2017arana.pdf LINK AL EDITOR |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
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| 022 | |a 0140-7791 | ||
| 024 | |a 10.1111/pce.13076 | ||
| 040 | |a AR-BaUFA | ||
| 245 | |a Physiological and molecular mechanisms underlying the integration of light and temperature cues in Arabidopsis thaliana seeds | ||
| 520 | |a The relief of dormancy and the promotion of seed germination are of extreme importance for a successful seedling establishment. Although alternating temperatures and light are signals promoting the relief of seed dormancy, the underlying mechanisms of their interaction in seeds are scarcely known. By exposing imbibed Arabidopsis thaliana dormant seeds to two‐day temperature cycles previous of a red light pulse, we demonstrate that the germination mediated by phytochrome B requires the presence of functional PSEUDO‐RESPONSE REGULATOR 7 (PRR7) and TIMING OF CAB EXPRESSION 1 (TOC1) alleles. In addition, daily cycles of alternating temperatures in darkness reduce the protein levels of DELAY OF GERMINATION 1 (DOG1), allowing the expression of TOC1 to induce seed germination. Our results suggest a functional role for some components of the circadian clock related with the action of DOG1 for the integration of alternating temperatures and light signals in the relief of seed dormancy. The synchronization of germination by the synergic action of light and temperature through the activity of circadian clock might have ecological and adaptive consequences. | ||
| 653 | |a ALTERNATING TEMPERATURE | ||
| 653 | |a CIRCADIAN CLOCK | ||
| 653 | |a DOG1 | ||
| 653 | |a SEED DORMANCY | ||
| 700 | 1 | |9 67243 |a Arana, María Verónica |u INTA, EEA Bariloche y Consejo Nacional de Investigaciones Científicas y Técnicas, Modesta Victoria 4450, Valle Verde, Bariloche R8403DVZ, Rio Negro, Argentina | |
| 700 | 1 | |9 67244 |a Tognacca, Rocío Soledad |u IFEVA, Facultad de Agronomía, Universidad de Buenos Aires y Consejo Nacional de Investigaciones Científicas y Técnicas, Av. San Martín 4453, Ciudad de Buenos Aires C1417DSE, Argentina | |
| 700 | 1 | |a Estravis Barcalá, Maximiliano |u INTA, EEA Bariloche y Consejo Nacional de Investigaciones Científicas y Técnicas, Modesta Victoria 4450, Valle Verde, Bariloche R8403DVZ, Rio Negro, Argentina |9 67245 | |
| 700 | |9 49417 |a Sánchez, Rodolfo Augusto |u IFEVA, Facultad de Agronomía, Universidad de Buenos Aires y Consejo Nacional de Investigaciones Científicas y Técnicas, Av. San Martín 4453, Ciudad de Buenos Aires C1417DSE, Argentina | ||
| 700 | 1 | |9 65609 |a Botto, Javier Francisco |u IFEVA, Facultad de Agronomía, Universidad de Buenos Aires y Consejo Nacional de Investigaciones Científicas y Técnicas, Av. San Martín 4453, Ciudad de Buenos Aires C1417DSE, Argentina | |
| 773 | 0 | |t Plant, cell and environment |w SECS000149 |g Vol.40, no.12 (2017), p.3113-3121, tbls., grafs. | |
| 856 | |f 2017arana |i En Reservorio |q application/pdf |u http://ri.agro.uba.ar/files/intranet/articulo/2017arana.pdf |x ARTI201806 | ||
| 856 | |u https://www.wiley.com |z LINK AL EDITOR | ||
| 942 | |c ARTICULO | ||
| 942 | |c ENLINEA | ||
| 976 | |a AAG | ||