| http://purl.uniprot.org/citations/14645731 | http://www.w3.org/1999/02/22-rdf-syntax-ns#type | http://purl.uniprot.org/core/Journal_Citation |
| http://purl.uniprot.org/citations/14645731 | http://www.w3.org/2000/01/rdf-schema#comment | "The HFR1, a basic helix-loop-helix protein, is required for a subset of phytochrome A-mediated photoresponses in Arabidopsis. Here, we show that overexpression of the HFR1-deltaN105 mutant, which lacks the N-terminal 105 amino acids, confers exaggerated photoresponses even in darkness. Physiological analysis implied that overexpression of HFR1-deltaN105 activated constitutively a branch pathway of light signaling that mediates a subset of photomorphogenic responses, including germination, de-etiolation, gravitropic hypocotyl growth, blocking of greening, and expression of some light-regulated genes such as CAB, DRT112, PSAE, PSBL, PORA, and XTR7, without affecting the light-responsiveness of anthocyanin accumulation and expression of other light-regulated genes such as CHS and PSBS. Although the end-of-day far-red light response and petiole elongation were suppressed in the HFR1-deltaN105-overexpressing plants, flowering time was not affected by HFR1-deltaN105. In addition, the HFR1-deltaN105-overexpressing plants showed hypersensitive photoresponses in the inhibition of hypocotyl elongation, dependently on phytochrome A, FHY1, and FHY3 under FR light or phyB under R light, respectively. Moreover, our double mutant analysis suggested that the hypersensitive photoresponse is due to functional cooperation between HFR1-deltaN105 and other light-signaling components including HY5, a basic leucine zipper protein. Taken together, our results of gain-of-function approach with HFR1-deltaN105 suggest the existence of a complex and important basic helix-loop-helix protein-mediated transcriptional network controlling a branch pathway of light signaling and provide a useful framework for further genetic dissection of light-signaling network in Arabidopsis."xsd:string |
| http://purl.uniprot.org/citations/14645731 | http://purl.org/dc/terms/identifier | "doi:10.1104/pp.103.029751"xsd:string |
| http://purl.uniprot.org/citations/14645731 | http://purl.uniprot.org/core/author | "Lee S."xsd:string |
| http://purl.uniprot.org/citations/14645731 | http://purl.uniprot.org/core/author | "Kim Y.M."xsd:string |
| http://purl.uniprot.org/citations/14645731 | http://purl.uniprot.org/core/author | "Yang K.Y."xsd:string |
| http://purl.uniprot.org/citations/14645731 | http://purl.uniprot.org/core/author | "Song P.S."xsd:string |
| http://purl.uniprot.org/citations/14645731 | http://purl.uniprot.org/core/author | "Soh M.S."xsd:string |
| http://purl.uniprot.org/citations/14645731 | http://purl.uniprot.org/core/date | "2003"xsd:gYear |
| http://purl.uniprot.org/citations/14645731 | http://purl.uniprot.org/core/name | "Plant Physiol"xsd:string |
| http://purl.uniprot.org/citations/14645731 | http://purl.uniprot.org/core/pages | "1630-1642"xsd:string |
| http://purl.uniprot.org/citations/14645731 | http://purl.uniprot.org/core/title | "Overexpression of a mutant basic helix-loop-helix protein HFR1, HFR1-deltaN105, activates a branch pathway of light signaling in Arabidopsis."xsd:string |
| http://purl.uniprot.org/citations/14645731 | http://purl.uniprot.org/core/volume | "133"xsd:string |
| http://purl.uniprot.org/citations/14645731 | http://www.w3.org/2004/02/skos/core#exactMatch | http://purl.uniprot.org/pubmed/14645731 |
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