ArticlePlant physiology2007
AGF1, an AT-hook protein, is necessary for the negative feedback of AtGA3ox1 encoding GA 3-oxidase.
Article in Plant physiology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers.
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71 citing papers in PubMed, 163 citations in OpenAlex.
- Genome-wide evolutionary characterization and expression analysis of the AT-HOOK MOTIF CONTAINING NUCLEAR LOCALIZED gene family in Brachypodium distachyon.G3 (Bethesda, Md.) · 2026Article
- The multifaceted role of gibberellins in somatic embryogenesis: fromFrontiers in plant science · 2026Review
- Depletion of Gibberellin Signaling Up-RegulatesInternational journal of molecular sciences · 2024Article
- Mapping the Influence of Light Intensity on the Transgenerational Genetic Architecture ofCurrent issues in molecular biology · 2024Article
- Genome-wide analysis of radishFrontiers in plant science · 2024Article
- AGAMOUS regulates various target genes via cell cycle-coupled H3K27me3 dilution in floral meristems and stamens.The Plant cell · 2023Article
- Overexpression of AHL proteins enhances root hair production by altering the transcription of RHD6-downstream genes.Plant direct · 2023Article
- Article
- SPINDLY mediates O-fucosylation of hundreds of proteins and sugar-dependent growth in Arabidopsis.The Plant cell · 2023Article
- Systematical Characterization of theInternational journal of molecular sciences · 2023Article
- Genome-wide dissection of AT-hook motif nuclear-localized gene family and their expression profiling for drought and salt stress in rice (Frontiers in plant science · 2023Article
- miR156-independent repression of the ageing pathway by longevity-promoting AHL proteins in Arabidopsis.The New phytologist · 2022Article
- SUPPRESSOR OF PHYTOCHROME B-4 #3 reduces the expression of PIF-activated genes and increases expression of growth repressors to regulate hypocotyl elongation in short days.BMC plant biology · 2022Article
- Overexpression of AHL9 accelerates leaf senescence in Arabidopsis thaliana.BMC plant biology · 2022Article
- DELLA-GAF1 complex is involved in tissue-specific expression and gibberellin feedback regulation of GA20ox1 in Arabidopsis.Plant molecular biology · 2021Article
- Comparisons within the Rice GA 2-Oxidase Gene Family Revealed Three Dominant Paralogs and a Functional Attenuated Gene that Led to the Identification of Four Amino Acid Variants Associated with GA Deactivation Capability.Rice (New York, N.Y.) · 2021Article
- Genome-wide identification and expression analysis of the AT-hook Motif Nuclear Localized gene family in soybean.BMC genomics · 2021Article
- Characteristics of theGenes · 2021Article
- An Arabidopsis AT-hook motif nuclear protein mediates somatic embryogenesis and coinciding genome duplication.Nature communications · 2021Article
- Molecular Targets and Biological Functions of cAMP Signaling inBiomolecules · 2021Article
11 more citing papers are in PubMed but not listed here.
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Negative feedback is a fundamental mechanism of organisms to maintain the internal environment within tolerable limits. Gibberellins (GAs) are essential regulators of many aspects of plant development, including seed germination, stem elongation, and flowering. GA biosynthesis is regulated by the feedback mechanism in plants. GA 3-oxidase (GA3ox) catalyzes the final step of the biosynthetic pathway to produce the physiologically active GAs. Here, we found that only the AtGA3ox1 among the AtGA3ox family of Arabidopsis (Arabidopsis thaliana) is under the regulation of GA-negative feedback. We have identified a cis-acting sequence responsible for the GA-negative feedback of AtGA3ox1 using transgenic plants. Furthermore, we have identified an AT-hook protein, AGF1 (for the AT-hook protein of GA feedback regulation), as a DNA-binding protein for the cis-acting sequence of GA-negative feedback. The mutation in the cis-acting sequence abolished both GA-negative feedback and AGF1 binding. In addition, constitutive expression of AGF1 affected GA-negative feedback in Arabidopsis. Our results suggest that AGF1 plays a role in the homeostasis of GAs through binding to the cis-acting sequence of the GA-negative feedback of AtGA3ox1.
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