ArticlePlanta2014
The BdGAMYB protein from Brachypodium distachyon interacts with BdDOF24 and regulates transcription of the BdCathB gene upon seed germination.
Article in Planta, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 9 citations in OpenAlex.
- Comparative physiological and cytological analysis, and omics approach provide clues to the coloring mechanism of the pumpkin yellow stems.BMC plant biology · 2025Article
- Integrated microRNA and transcriptome profiling reveals a miRNA-mediated regulatory network of embryo abortion under calcium deficiency in peanut (Arachis hypogaea L.).BMC genomics · 2019Article
- Insights on the Proteases Involved in Barley and Wheat Grain Germination.International journal of molecular sciences · 2019Review
- Mitochondrial AtTrxo1 is transcriptionally regulated by AtbZIP9 and AtAZF2 and affects seed germination under saline conditions.Journal of experimental botany · 2017Article
- Functional Characterization of TaFUSCA3, a B3-Superfamily Transcription Factor Gene in the Wheat.Frontiers in plant science · 2017Article
- A Developmental Switch of Gene Expression in the Barley Seed Mediated by HvVP1 (Viviparous-1) and HvGAMYB Interactions.Plant physiology · 2016Article
- Mannans and endo-β-mannanases (MAN) in Brachypodium distachyon: expression profiling and possible role of the BdMAN genes during coleorhiza-limited seed germination.Journal of experimental botany · 2015Article
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Authors and funding
4 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
MAIN
conclusionBdDOF24 interacting with BdGAMYB regulates the BdCathB gene upon germination. During barley seed germination, hydrolytic enzymes (α-amylases, proteases, etc.) synthesized in the aleurone layer in response to gibberellins (GA), catalyse the mobilization of storage reserves accumulated in the endosperm during seed maturation. In Brachypodium distachyon, the BdCathB gene that encodes a Cathepsin B-like thiol-protease, orthologous to the wheat Al21 and barley HvCathB, is highly induced in germinating seeds and its expression is regulated by transcription factors (TFs) encoded by genes BdGamyb and BdDof24, orthologous to the barley HvGamyb and BPBF-HvDof24, respectively. Transcripts of both TF genes increase during germination and treatments with abscisic acid (ABA) or paclobutrazol (PAC, an inhibitor of GA biosynthesis) decrease mRNA expression of BdGamyb but do not affect that of BdDof24. Besides, proteins BdDOF24 and BdGAMYB interact in yeast-2 hybrid systems and in plant nuclei, and in transient expression assays in aleurone layers BdDOF24 is a transcriptional repressor and BdGAMYB is an activator of the BdCathB promoter, as occurs with the putative orthologous in barley BPBF-HvDOF24 and HvGAMYB. However, when both TFs are co-bombarded, BdDOF24 enhances the activation driven by BdGAMYB while BPBF-HvDOF24 strongly decreases the HvGAMYB-mediated activation of the BdCathB promoter. The different results obtained when BdDOF24 and BPBF-HvDOF24 interact with BdGAMYB and HvGAMYB are discussed.
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