ArticlePlant physiology1999
The activity of the maize Opaque2 transcriptional activator is regulated diurnally.
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 20 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
20 citing papers in PubMed.
- Genome-wide analysis of flax bZIP genes using a T2T genome reveals abiotic stress roles.iScience · 2026Article
- E3 ligase SlCOP1-1 stabilizes transcription factor SlOpaque2 and enhances fruit resistance to Botrytis cinerea in tomato.Plant physiology · 2024Article
- In silico analysis identified bZIP transcription factors genes responsive to abiotic stress in Alfalfa (Medicago sativa L.).BMC genomics · 2024Article
- PfbZIP85 Transcription Factor Mediates ω-3 Fatty Acid-Enriched Oil Biosynthesis by Down-RegulatingInternational journal of molecular sciences · 2024Article
- The Italian Research on the Molecular Characterization of Maize Kernel Development.International journal of molecular sciences · 2022Review
- The B3 domain-containing transcription factor ZmABI19 coordinates expression of key factors required for maize seed development and grain filling.The Plant cell · 2021Article
- A SnRK1-The Plant cell · 2020Article
- Genome-wide identification, structural and gene expression analysis of the bZIP transcription factor family in sweet potato wild relative Ipomoea trifida.BMC genetics · 2019Article
- Genome-Wide Identification and Structural Analysis of bZIP Transcription Factor Genes in Brassica napus.Genes · 2017Article
- Genome-Wide Identification ofInternational journal of genomics · 2017Article
- Linkage disequilibrium, SNP frequency change due to selection, and association mapping in popcorn chromosome regions containing QTLs for quality traits.Genetics and molecular biology · 2016Article
- Conserved cis-regulatory modules in promoters of genes encoding wheat high-molecular-weight glutenin subunits.Frontiers in plant science · 2014Article
- Article
- Zea mays Taxilin protein negatively regulates opaque-2 transcriptional activity by causing a change in its sub-cellular distribution.PloS one · 2012Article
- The thick aleurone1 mutant defines a negative regulation of maize aleurone cell fate that functions downstream of defective kernel1.Plant physiology · 2011Article
- Article
- Atlas of rice grain filling-related metabolism under high temperature: joint analysis of metabolome and transcriptome demonstrated inhibition of starch accumulation and induction of amino acid accumulation.Plant & cell physiology · 2010Article
- Expressional profiling study revealed unique expressional patterns and dramatic expressional divergence of maize alpha-zein super gene family.Plant molecular biology · 2009Article
- The role of bZIP transcription factors in green plant evolution: adaptive features emerging from four founder genes.PloS one · 2008Article
- Wild-type opaque2 and defective opaque2 polypeptides form complexes in maize endosperm cells and bind the opaque2-zein target site.Plant physiology · 2007Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
Abstract
The maize (Zea mays L.) Opaque2 (O2) protein is an endosperm-specific transcriptional activator whose DNA-binding activity is regulated diurnally by a phosphorylation/dephosphorylation mechanism. We show that the O2 transcript undergoes pronounced oscillations during the day-night cycle. The highest level of the O2 message is present at midday and the lowest level at midnight. The level of O2 transcript follows a diurnal rhythm that appears controlled by the circadian clock. Two different endosperm-expressed DNA-binding proteins, PBF (prolamin box-binding factor) and OHP1 (O2-heterodimerizing protein 1), were also analyzed. While the PBF message levels oscillate diurnally, the steady-state levels of OHP1 transcript were constant through the day and night. We present data showing that the seed is not directly involved in the perception of the light signal, but presumably responds to diurnal fluxes of nutrients into the endosperm. Moreover, we show that the O2 protein is not involved in the regulation of its own transcript levels. These data indicate that O2 activity is down-regulated at night by both a reduction in O2 transcript and by hyperphosphorylation of residual O2 protein, and suggest that regulatory gene activity during endosperm development may be acutely sensitive to a diurnal signal(s) emanating from the plant and passing into the developing seeds.
Indexed as
Identifiers
What OpenQuestion holds
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.