Phytochrome control of the Arabidopsis transcriptome anticipates seedling exposure to light
Phytochromes mediate a profound developmental shift when dark-grown seedlings are exposed to light. Here, we show that a subset of genes is upregulated in phytochrome B (phyB) mutants even before dark-grown Arabidopsis thaliana seedlings are exposed to light. Most of these genes bear the RY cis moti...
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2005
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10404651_v17_n9_p2507_Mazzella http://hdl.handle.net/20.500.12110/paper_10404651_v17_n9_p2507_Mazzella |
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paper:paper_10404651_v17_n9_p2507_Mazzella2023-06-08T16:00:47Z Phytochrome control of the Arabidopsis transcriptome anticipates seedling exposure to light Genes Physiology ABI3 overexpressers Far-red light Transcription factor Transdevelopmental phase Seed Genes Mutation Physiology Seeds Arabidopsis Arabidopsis thaliana ABI3 protein, Arabidopsis Arabidopsis protein PHYB protein, Arabidopsis phytochrome B Arabidopsis article DNA microarray gene expression profiling gene expression regulation genetic transcription genetics histology light metabolism photoperiodicity physiology promoter region seedling Arabidopsis Arabidopsis Proteins Gene Expression Profiling Gene Expression Regulation, Plant Light Oligonucleotide Array Sequence Analysis Photoperiod Phytochrome B Promoter Regions (Genetics) Seedling Transcription, Genetic Phytochromes mediate a profound developmental shift when dark-grown seedlings are exposed to light. Here, we show that a subset of genes is upregulated in phytochrome B (phyB) mutants even before dark-grown Arabidopsis thaliana seedlings are exposed to light. Most of these genes bear the RY cis motif, which is a binding site of the transcription factor ABSCISIC ACID INSENSITIVE3 (ABI3), and the phyB mutation also enhances ABI3 expression. These changes in transcriptome have physiological consequences, because seedlings of the abi3 mutant showed enhanced responses to pulses of far-red light, whereas ABI3 overexpressers exhibited the opposite pattern. Seedlings of the wild type derived from seeds germinated in full darkness showed enhanced expression of genes bearing the RY cis motif and reduced responses to farred light. We propose that, via changes in ABI3 expression, light, perceived mainly by phyB in the seed, generates a downstream transdevelopmental phase signal that preconditions the seedling to its most likely environment. © 2005 American Society of Plant Biologists. 2005 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10404651_v17_n9_p2507_Mazzella http://hdl.handle.net/20.500.12110/paper_10404651_v17_n9_p2507_Mazzella |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Genes Physiology ABI3 overexpressers Far-red light Transcription factor Transdevelopmental phase Seed Genes Mutation Physiology Seeds Arabidopsis Arabidopsis thaliana ABI3 protein, Arabidopsis Arabidopsis protein PHYB protein, Arabidopsis phytochrome B Arabidopsis article DNA microarray gene expression profiling gene expression regulation genetic transcription genetics histology light metabolism photoperiodicity physiology promoter region seedling Arabidopsis Arabidopsis Proteins Gene Expression Profiling Gene Expression Regulation, Plant Light Oligonucleotide Array Sequence Analysis Photoperiod Phytochrome B Promoter Regions (Genetics) Seedling Transcription, Genetic |
| spellingShingle |
Genes Physiology ABI3 overexpressers Far-red light Transcription factor Transdevelopmental phase Seed Genes Mutation Physiology Seeds Arabidopsis Arabidopsis thaliana ABI3 protein, Arabidopsis Arabidopsis protein PHYB protein, Arabidopsis phytochrome B Arabidopsis article DNA microarray gene expression profiling gene expression regulation genetic transcription genetics histology light metabolism photoperiodicity physiology promoter region seedling Arabidopsis Arabidopsis Proteins Gene Expression Profiling Gene Expression Regulation, Plant Light Oligonucleotide Array Sequence Analysis Photoperiod Phytochrome B Promoter Regions (Genetics) Seedling Transcription, Genetic Phytochrome control of the Arabidopsis transcriptome anticipates seedling exposure to light |
| topic_facet |
Genes Physiology ABI3 overexpressers Far-red light Transcription factor Transdevelopmental phase Seed Genes Mutation Physiology Seeds Arabidopsis Arabidopsis thaliana ABI3 protein, Arabidopsis Arabidopsis protein PHYB protein, Arabidopsis phytochrome B Arabidopsis article DNA microarray gene expression profiling gene expression regulation genetic transcription genetics histology light metabolism photoperiodicity physiology promoter region seedling Arabidopsis Arabidopsis Proteins Gene Expression Profiling Gene Expression Regulation, Plant Light Oligonucleotide Array Sequence Analysis Photoperiod Phytochrome B Promoter Regions (Genetics) Seedling Transcription, Genetic |
| description |
Phytochromes mediate a profound developmental shift when dark-grown seedlings are exposed to light. Here, we show that a subset of genes is upregulated in phytochrome B (phyB) mutants even before dark-grown Arabidopsis thaliana seedlings are exposed to light. Most of these genes bear the RY cis motif, which is a binding site of the transcription factor ABSCISIC ACID INSENSITIVE3 (ABI3), and the phyB mutation also enhances ABI3 expression. These changes in transcriptome have physiological consequences, because seedlings of the abi3 mutant showed enhanced responses to pulses of far-red light, whereas ABI3 overexpressers exhibited the opposite pattern. Seedlings of the wild type derived from seeds germinated in full darkness showed enhanced expression of genes bearing the RY cis motif and reduced responses to farred light. We propose that, via changes in ABI3 expression, light, perceived mainly by phyB in the seed, generates a downstream transdevelopmental phase signal that preconditions the seedling to its most likely environment. © 2005 American Society of Plant Biologists. |
| title |
Phytochrome control of the Arabidopsis transcriptome anticipates seedling exposure to light |
| title_short |
Phytochrome control of the Arabidopsis transcriptome anticipates seedling exposure to light |
| title_full |
Phytochrome control of the Arabidopsis transcriptome anticipates seedling exposure to light |
| title_fullStr |
Phytochrome control of the Arabidopsis transcriptome anticipates seedling exposure to light |
| title_full_unstemmed |
Phytochrome control of the Arabidopsis transcriptome anticipates seedling exposure to light |
| title_sort |
phytochrome control of the arabidopsis transcriptome anticipates seedling exposure to light |
| publishDate |
2005 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10404651_v17_n9_p2507_Mazzella http://hdl.handle.net/20.500.12110/paper_10404651_v17_n9_p2507_Mazzella |
| _version_ |
1768546126403731456 |