ArticleJournal of experimental botany2022
Arabidopsis SIGMA FACTOR BINDING PROTEIN1 (SIB1) and SIB2 inhibit WRKY75 function in abscisic acid-mediated leaf senescence and seed germination.
Article in Journal of experimental botany, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.
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36 citing papers in PubMed, 65 citations in OpenAlex.
- SIB1-SEC23A undergo ER to chloroplast relocalization to mediate immunity in Arabidopsis thaliana.Journal of integrative plant biology · 2026Article
- A VvWRKY8-salicylic acid pathway amplification loop confers resistance to Plasmopara viticola in grapevine.Molecular horticulture · 2026Article
- From signals to solutions: stress-induced leaf senescence and synthetic biology and AI approaches for crop resilience.Molecular horticulture · 2026Review
- Genome-wide identification and expression profiling of the CoVQ gene family in Camellia Oleifera.BMC plant biology · 2026Article
- The transcription factor BnaWRKY75 enhances resistance to the necrotrophic pathogen Sclerotinia sclerotiorum by promoting salicylic acid biosynthesis in oilseed rape.Journal of experimental botany · 2025Article
- Integrated single-cell transcriptomics and spatial metabolomics unveil cellular differentiation and ginsenosides biosynthesis inHorticulture research · 2025Article
- Transcriptome dynamics and allele-specific regulation underlie wheat heterosis at the anthesis and grain-filling stages.BMC genomics · 2025Article
- Inorganic carbon levels regulate growth via SigC signaling cascade in cyanobacteria.The New phytologist · 2025Article
- Unravelling the role of WRKY transcription factors in leaf senescence: Genetic and molecular insights.Journal of advanced research · 2025Review
- Genome-Wide Identification, Characterization, and Expression Analysis ofPlants (Basel, Switzerland) · 2025Article
- A Golden2-like transcription factor regulates Brassica napus seed vigor after artificial aging.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025Article
- Roles of WRKY Transcription Factors in Response to Sri Lankan Cassava Mosaic Virus Infection in Susceptible and Tolerant Cassava Cultivars.Plants (Basel, Switzerland) · 2025Article
- RsWRKY75 promotes ROS scavenging and cadmium efflux via activating the transcription of RsAPX1 and RsPDR8 in radish (Raphanus sativus L.).Plant cell reports · 2025Article
- Identification and functional characterization of the MYB transcription factorFrontiers in plant science · 2025Article
- WRKY45 is a negative regulator ofFrontiers in plant science · 2025Article
- SlVQ15 recruits SlWRKY30IIc to link with jasmonate pathway in regulating tomato defence against root-knot nematodes.Plant biotechnology journal · 2025Article
- The MdHSC70-MdWRKY75 module mediates basal apple thermotolerance by regulating the expression of heat shock factor genes.The Plant cell · 2024Article
- MdVQ17 negatively regulates apple resistance to Glomerella leaf spot by promoting MdWRKY17-mediated salicylic acid degradation and pectin lyase activity.Horticulture research · 2024Article
- Structural basis for the regulation of plant transcription factor WRKY33 by the VQ protein SIB1.Communications biology · 2024Article
- The pleiotropic functions of GOLDEN2-LIKE transcription factors in plants.Frontiers in plant science · 2024Review
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10 authors at 3 institutions in 1 country.
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Abstract
The plant-specific VQ gene family participates in diverse physiological processes but little information is available on their role in leaf senescence. Here, we show that the VQ motif-containing proteins, Arabidopsis SIGMA FACTOR BINDING PROTEIN1 (SIB1) and SIB2 are negative regulators of abscisic acid (ABA)-mediated leaf senescence. Loss of SIB1 and SIB2 function resulted in increased sensitivity of ABA-induced leaf senescence. In contrast, overexpression of SIB1 significantly delayed this process. Moreover, biochemical studies revealed that SIBs interact with WRKY75 transcription factor. Loss of WRKY75 function decreased sensitivity to ABA-induced leaf senescence, while overexpression of WRKY75 significantly accelerated this process. Chromatin immunoprecipitation assays revealed that WRKY75 directly binds to the promoters of GOLDEN 2-LIKE1(GLK1) and GLK2, to repress their expression. SIBs repress the transcriptional function of WRKY75 and negatively regulate ABA-induced leaf senescence in a WRKY75-dependent manner. In contrast, WRKY75 positively modulates ABA-mediated leaf senescence in a GLK-dependent manner. In addition, SIBs inhibit WRKY75 function in ABA-mediated seed germination. These results demonstrate that SIBs can form a complex with WRKY75 to regulate ABA-mediated leaf senescence and seed germination.
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