ArticlePlant physiology2023
Transcription factors ABF4 and ABR1 synergistically regulate amylase-mediated starch catabolism in drought tolerance.
Article in Plant physiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.
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35 citing papers in PubMed, 76 citations in OpenAlex.
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- Multi-Omics Combined With Mitochondrial Feeding Assays Reveal a Novel Energy Metabolism Strategy for Floral Thermogenesis in Magnolia Driven by Synergistic Supply of Multiple Substrates.Plant biotechnology journal · 2026Article
- Abscisic Acid and Calcium Signals Convergently Regulate Sugar Accumulation by Orchestrating the SRK2A/CIPK6-ABI5-TST2 Module in Citrus.Plant biotechnology journal · 2026Article
- Root-enriched β-amylase GmBAM-like 1 enhances drought and salt tolerance in Arabidopsis.Genetics and molecular biology · 2026Article
- SlCV affects starch metabolism by regulating SlBAM3 stability under low night temperature stress in tomatoes.Horticulture research · 2025Article
- PagHB7/PagABF4-PagEPFL9 Module Regulates Stomatal Density and Drought Tolerance in Poplar.Plant biotechnology journal · 2025Article
- The miR395b-ABI5 module regulates amylopectin branching and biosynthesis and affects lotus root quality.Plant physiology · 2025Article
- Construction of Yeast One-Hybrid Library ofBiomolecules · 2025Article
- Physiological Mechanisms of Exogenous ABA in Alleviating Drought Stress inPlants (Basel, Switzerland) · 2025Article
- MsAREB1 enhances combined cold and saline-alkali stress tolerance by promoting ascorbic acid biosynthesis in alfalfa.Plant biotechnology journal · 2025Article
- CgABR1-CgFAD negatively regulates the fruit neck length in citrus.Plant biotechnology journal · 2025Article
- Genome-Wide Characterization of the Phosphofructokinase Gene Family inInternational journal of molecular sciences · 2025Article
- Genome-wide identification and expression profiles of NAC transcription factors in Poncirus trifoliata reveal their potential roles in cold tolerance.BMC plant biology · 2025Article
- Integrative physiological and transcriptomic analysis provides insights on the molecular basis of ABA-enhanced drought tolerance in pear (Pyrus betulaefolia).BMC plant biology · 2025Article
- Article
- The haplotype-resolved genome assembly of an ancient citrus variety provides insights into the domestication history and fruit trait formation of loose-skin mandarins.Genome biology · 2025Article
- Phenotypic Physiological and Metabolomic Analyses Reveal Crucial Metabolic Pathways in Quinoa (International journal of molecular sciences · 2025Article
- CBL1/CIPK23 phosphorylates tonoplast sugar transporter TST2 to enhance sugar accumulation in sweet orange (Citrus sinensis).Journal of integrative plant biology · 2025Article
- Allelic variation in an expansin, MdEXP-A1, contributes to flesh firmness at harvest in apples.Molecular horticulture · 2025Article
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Authors and funding
10 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
β-Amylase (BAM)-mediated starch degradation is a main source of soluble sugars that help plants adapt to environmental stresses. Here, we demonstrate that dehydration-induced expression of PtrBAM3 in trifoliate orange (Poncirus trifoliata (L.) Raf.) functions positively in drought tolerance via modulation of starch catabolism. Two transcription factors, PtrABF4 (P. trifoliata abscisic acid-responsive element-binding factor 4) and PtrABR1 (P. trifoliata ABA repressor 1), were identified as upstream transcriptional activators of PtrBAM3 through yeast one-hybrid library screening and protein-DNA interaction assays. Both PtrABF4 and PtrABR1 played a positive role in plant drought tolerance by modulating soluble sugar accumulation derived from BAM3-mediated starch decomposition. In addition, PtrABF4 could directly regulate PtrABR1 expression by binding to its promoter, leading to a regulatory cascade to reinforce the activation of PtrBAM3. Moreover, PtrABF4 physically interacted with PtrABR1 to form a protein complex that further promoted the transcriptional regulation of PtrBAM3. Taken together, our finding reveals that a transcriptional cascade composed of ABF4 and ABR1 works synergistically to upregulate BAM3 expression and starch catabolism in response to drought condition. The results shed light on the understanding of the regulatory molecular mechanisms underlying BAM-mediated soluble sugar accumulation for rendering drought tolerance in plants.
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