The Transcription Factor HY5 Is Involved in the Cytokinin-Dependent Regulation of the Expression of Genes Encoding Proteins Associated with Bacterial Plastid RNA-Polymerase during De-Etiolation of Arabidopsis thaliana
| Autor: | Victor V. Kusnetsov, Vl. V. Kuznetsov, A. S. Doroshenko, A. A. Andreeva, M. N. Danilova, N. V. Kudryakova |
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| Rok vydání: | 2020 |
| Předmět: |
Chloroplasts
Cytokinins Mutant Biophysics Arabidopsis Biology Biochemistry 03 medical and health sciences chemistry.chemical_compound Gene Expression Regulation Plant RNA polymerase Etiolation Arabidopsis thaliana Plastids Plastid Gene Transcription factor 030304 developmental biology 0303 health sciences Bacteria Arabidopsis Proteins 030302 biochemistry & molecular biology General Chemistry General Medicine DNA-Directed RNA Polymerases biology.organism_classification Cell biology Basic-Leucine Zipper Transcription Factors chemistry Photomorphogenesis Signal Transduction |
| Zdroj: | Doklady. Biochemistry and biophysics. 492(1) |
| ISSN: | 1608-3091 |
| Popis: | HY5 (ELONGATED HYPOCOTYL5), a bZIP transcription factor, is one of the main regulators of light and hormonal signaling. Among the targets of this gene, the genes for the transcriptional complex of chloroplasts whose coordinated expression ensures the initial stages of photomorphogenesis are particularly significant. In this study, we showed that, during de-etiolation, HY5 functions as a positive CK-dependent regulator of the expression of genes encoding proteins associated with plastid RNA polymerase (PAP), which functions below the primary chain of sensing the cytokinin signal. The absence of blocking effect of mutations of the CRY1, CRY2, PHYA, and PHYB photoreceptor genes on the CK-dependent content of PAP gene transcripts indicates the parallel action of the hormone and light in their regulation. |
| Databáze: | OpenAIRE |
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