ArticlePlant physiology2008
Interactions of two transcriptional repressors and two transcriptional activators in modulating gibberellin signaling in aleurone cells.
Article in Plant physiology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.
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Who cites it
39 citing papers in PubMed, 84 citations in OpenAlex.
- Article
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- WRKY transcription factors and OBERON histone-binding proteins form complexes to balance plant growth and stress tolerance.The EMBO journal · 2023Article
- DOF transcription factors: Specific regulators of plant biological processes.Frontiers in plant science · 2023Review
- Genome-Wide Identification and Analysis ofGenes · 2022Article
- FIND-IT: Accelerated trait development for a green evolution.Science advances · 2022Article
- Exploration of the genomic atlas of Dof transcription factor family across genusFrontiers in plant science · 2022Article
- Functional and molecular characterization of fluoride exporter (FEX) from rice and its constitutive overexpression in Nicotiana benthamiana to promote fluoride tolerance.Plant cell reports · 2021Article
- A transcriptional hub integrating gibberellin-brassinosteroid signals to promote seed germination in Arabidopsis.Journal of experimental botany · 2021Article
- Genome-Wide Association Study (GWAS) to Identify Salt-Tolerance QTLs Carrying Novel Candidate Genes in Rice During Early Vegetative Stage.Rice (New York, N.Y.) · 2021Article
- Auxin-Responsive R2R3-MYB Transcription Factors HcMYB1 and HcMYB2 Activate Volatile Biosynthesis inFrontiers in plant science · 2021Article
- Promoter Architecture and Transcriptional Regulation of Genes Upregulated in Germination and Coleoptile Elongation of Diverse Rice Genotypes Tolerant to Submergence.Frontiers in genetics · 2021Article
- Gibberellin Metabolism and Signaling: Targets for Improving Agronomic Performance of Crops.Plant & cell physiology · 2020Review
- The Role of Major Transcription Factors in Solanaceous Food Crops under Different Stress Conditions: Current and Future Perspectives.Plants (Basel, Switzerland) · 2020Review
- Article
- WRKY transcription factors in legumes.BMC plant biology · 2018Article
- Molecular Mechanisms Underlying Abscisic Acid/Gibberellin Balance in the Control of Seed Dormancy and Germination in Cereals.Frontiers in plant science · 2018Review
- Expression, purification and DNA-binding properties of zinc finger domains of DOF proteins fromBioImpacts : BI · 2018Article
- A comprehensive investigation of starch degradation process and identification of a transcriptional activator MabHLH6 during banana fruit ripening.Plant biotechnology journal · 2018Article
- StMYB44 negatively regulates phosphate transport by suppressing expression of PHOSPHATE1 in potato.Journal of experimental botany · 2017Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
Abstract
Gibberellins (GAs) regulate many aspects of plant development, such as germination, growth, and flowering. The barley (Hordeum vulgare) Amy32b alpha-amylase promoter contains at least five cis-acting elements that govern its GA-induced expression. Our previous studies indicate that a barley WRKY gene, HvWRKY38, and its rice (Oryza sativa) ortholog, OsWRKY71, block GA-induced expression of Amy32b-GUS. In this work, we investigated the functional and physical interactions of HvWRKY38 with another repressor and two activators in barley. HvWRKY38 blocks the inductive activities of SAD (a DOF protein) and HvGAMYB (a R2R3 MYB protein) when either of these proteins is present individually. However, SAD and HvGAMYB together overcome the inhibitory effect of HvWRKY38. Yet, the combination of HvWRKY38 and BPBF (another DOF protein) almost diminishes the synergistic effect of SAD and HvGAMYB transcriptional activators. Electrophoretic mobility shift assays indicate that HvWRKY38 blocks the GA-induced expression of Amy32b by interfering with the binding of HvGAMYB to the cis-acting elements in the alpha-amylase promoter. The physical interaction of HvWRKY38 and BPBF repressors is demonstrated via bimolecular fluorescence complementation assays. These data suggest that the expression of Amy32b is modulated by protein complexes that contain either activators (e.g. HvGAMYB and SAD) or repressors (e.g. HvWRKY38 and BPBF). The relative amounts of the repressor or activator complexes binding to the Amy32b promoter regulate its expression level in barley aleurone cells.
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