ArticlePlant physiology1999
Both phyA and phyB mediate light-imposed repression of PHYA gene expression in Arabidopsis.
Article in Plant physiology, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.
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Who cites it
42 citing papers in PubMed, 101 citations in OpenAlex.
- Article
- Phytochrome A is required for light-inhibited germination of Aethionema arabicum seed.The New phytologist · 2025Article
- A PIF-regulated switch in cell axis growth drives cotyledon expansion through tissue-specific cell expansion and division.The Plant journal : for cell and molecular biology · 2025Article
- Article
- Two Distinct Molecular Types of Phytochrome A in Plants: Evidence of Existence and Implications for Functioning.International journal of molecular sciences · 2023Review
- Phytochrome A in plants comprises two structurally and functionally distinct populations - water-soluble phyA' and amphiphilic phyA″.Biophysical reviews · 2022Review
- The phosphatase/kinase balance affects phytochrome A and its native pools, phyA' and phyA″, in etiolated maize roots: evidence from the induction of phyA' destruction by a protein phosphatase inhibitor sodium fluoride.Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology · 2021Article
- Article
- Article
- Photoreceptor Activity Contributes to Contrasting Responses to Shade in Cardamine and Arabidopsis Seedlings.The Plant cell · 2019Article
- Characterization of peanut phytochromes and their possible regulating roles in early peanut pod development.PloS one · 2018Article
- Light behind the curtain: photoregulation of nuclear architecture and chromatin dynamics in plants.The New phytologist · 2016Article
- Lysine 206 in Arabidopsis phytochrome A is the major site for ubiquitin-dependent protein degradation.Journal of biochemistry · 2016Article
- Conditional involvement of constitutive photomorphogenic1 in the degradation of phytochrome A.Plant physiology · 2013Article
- The light-response BTB1 and BTB2 proteins assemble nuclear ubiquitin ligases that modify phytochrome B and D signaling in Arabidopsis.Plant physiology · 2012Article
- Reprogramming of gene expression during compression wood formation in pine: coordinated modulation of S-adenosylmethionine, lignin and lignan related genes.BMC plant biology · 2012Article
- Distinct phytochrome actions in nonvascular plants revealed by targeted inactivation of phytobilin biosynthesis.Proceedings of the National Academy of Sciences of the United States of America · 2012Article
- Genomic basis for light control of plant development.Protein & cell · 2012Review
- Phytochrome signaling mechanisms and the control of plant development.Trends in cell biology · 2011Review
- Rapid and reversible light-mediated chromatin modifications of Arabidopsis phytochrome A locus.The Plant cell · 2011Article
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The negatively photoregulated PHYA gene has a complex promoter structure in Arabidopsis, with three active transcription start sites. To identify the photoreceptors responsible for regulation of this gene, and to assess the relative roles of the three transcription start sites, we analyzed the changes in PHYA transcript levels in wild-type and photoreceptor mutant seedlings under various irradiation conditions. Continuous far-red or red light exposures each induced a significant decline in transcript levels in wild-type etiolated seedlings. Analysis of mutants specifically lacking either phyA or phyB protein demonstrated that these phytochromes are required for the negative regulation induced by far-red and red light, respectively. Ribonuclease protection experiments showed further that this negative regulation is confined almost exclusively to the shortest, most abundant PHYA transcript, and occurs predominantly in shoots. By contrast, both of the other minor transcripts in shoots, and all three transcripts in roots, exhibit near constitutive expression. This complex expression pattern indicates that the PHYA gene is subject to regulation by multiple signals, including environmental, developmental, and organ-specific signals.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.