The cyclophilin ROC1 links phytochrome and cryptochrome to brassinosteroid sensitivity
Although multiple photoreceptors converge to control common aspects of seedling de-etiolation, we are relatively ignorant of the genes acting at or downstream of their signalling convergence. To address this issue we screened for mutants under a mixture of blue plus far-red light and identified roc1...
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| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2012Trupkin.pdf LINK AL EDITOR |
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| 008 | 181208t2012 |||||o|||||00||||eng d | ||
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| 022 | |a 1365-313X (en línea) | ||
| 022 | |a 0960-7412 (impreso) | ||
| 024 | |a 10.1111/j.1365-313X.2012.05013.x | ||
| 040 | |a AR-BaUFA |c AR-BaUFA | ||
| 100 | 1 | |9 68567 |a Trupkin, Santiago Ariel | |
| 245 | 0 | 0 | |a The cyclophilin ROC1 links phytochrome and cryptochrome to brassinosteroid sensitivity |
| 520 | |a Although multiple photoreceptors converge to control common aspects of seedling de-etiolation, we are relatively ignorant of the genes acting at or downstream of their signalling convergence. To address this issue we screened for mutants under a mixture of blue plus far-red light and identified roc1-1D. The roc1-1D mutant, showing elevated expression of the ROTAMASE CYCLOPHILIN 1 [ROC1/AtCYP18-3] gene, and partial loss-of function roc1 alleles, has defects in phytochrome A [phyA]-, cryptochrome 1 [cry1]- and phytochrome B [phyB]-mediated de-etiolation, including long hypocotyls under blue or far-red light. These mutants show elevated sensitivity to brassinosteroids in the light but not in the dark. Mutations at brassinosteroid signalling genes and the application of a brassinosteroid synthesis inhibitor eliminated the roc1 and roc1-D phenotypes. The roc1 and roc1-D mutants show altered patterns of phosphorylation of the transcription factor BES1, a known point of control of sensitivity to brassinosteroids, which correlate with the expression levels of genes directly targeted by BES1. We propose a model where perception of light by phyA, cry1 or phyB activates ROC1 [at least in part by enhancing its expression]. This in turn reduces the intensity of brassinosteroid signalling and fine-tunes seedling de-etiolation. | ||
| 650 | |2 Agrovoc |9 26 | ||
| 653 | 0 | |a ARABIDOPSIS | |
| 653 | 0 | |a BRASSINOSTEROID | |
| 653 | 0 | |a CRYPTOCHROME | |
| 653 | 0 | |a PHYTOCHROME | |
| 653 | 0 | |a ROTAMASE CYCLOPHILIN 1 | |
| 653 | 0 | |a BRASSINOSTEROIDS | |
| 653 | 0 | |a CRYPTOCHROMES | |
| 653 | 0 | |a CYCLOPHILIN | |
| 653 | 0 | |a PHOSPHORYLATION | |
| 653 | 0 | |a PLANTS [BOTANY] | |
| 653 | 0 | |a TRANSCRIPTION FACTORS | |
| 653 | 0 | |a GENES | |
| 653 | 0 | |a ARABIDOPSIS PROTEIN | |
| 653 | 0 | |a BES1 PROTEIN, ARABIDOPSIS | |
| 653 | 0 | |a CRY1 PROTEIN, ARABIDOPSIS | |
| 653 | 0 | |a NUCLEAR PROTEIN | |
| 653 | 0 | |a PHYTOCHROME A | |
| 653 | 0 | |a ROC1 PROTEIN, ARABIDOPSIS | |
| 653 | 0 | |a GENETICS | |
| 653 | 0 | |a LIGHT | |
| 653 | 0 | |a METABOLISM | |
| 653 | 0 | |a MUTATION | |
| 653 | 0 | |a PHENOTYPE | |
| 653 | 0 | |a PHOSPHORYLATION | |
| 653 | 0 | |a ARABIDOPSIS PROTEINS | |
| 653 | 0 | |a BRASSINOSTEROIDS | |
| 653 | 0 | |a NUCLEAR PROTEINS | |
| 653 | 0 | |a PHYTOCHROME A | |
| 700 | 1 | |a Mora García, Santiago |9 70023 | |
| 700 | 1 | |a Casal, Jorge José |9 792 | |
| 773 | |t The Plant Journal |g Vol.71, no.5 (2012), p.712-723 | ||
| 856 | |u http://ri.agro.uba.ar/files/intranet/articulo/2012Trupkin.pdf |i En reservorio |q application/pdf |f 2012Trupkin |x MIGRADOS2018 | ||
| 856 | |u http://www.wiley.com/ |x MIGRADOS2018 |z LINK AL EDITOR | ||
| 942 | 0 | 0 | |c ARTICULO |
| 942 | 0 | 0 | |c ENLINEA |
| 976 | |a AAG | ||