ArticleAnnals of botany2018
Calcium signalling regulates the functions of the bZIP protein VIP1 in touch responses in Arabidopsis thaliana.
Article in Annals of botany, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed, 31 citations in OpenAlex.
- Let go or retain: role of calmodulin in orchestrating nuclear protein transport in eukaryotes.Plant cell reports · 2026Review
- Functional 14-3-3 Proteins: Master Regulators in Plant Responses to Salt Stress.Plants (Basel, Switzerland) · 2025Review
- Unveiling the evolution of VIP1 subgroup bZIP transcription factors in plants and the positive effects of BdiVIP1A on heat stress response in Brachypodium distachyon.Plant cell reports · 2025Article
- Genome-Wide Identification and Analysis of bZIP Transcription Factor Gene Family in Broomcorn Millet (Genes · 2025Article
- Overexpression of a pearl millet WRKY transcription factor gene, PgWRKY74, in Arabidopsis retards shoot growth under dehydration and salinity-stressed conditions.Biotechnology letters · 2024Article
- Article
- Mechanically induced localisation of SECONDARY WALL INTERACTING bZIP is associated with thigmomorphogenic and secondary cell wall gene expression.Quantitative plant biology · 2024Article
- Calcium signaling-mediated transcriptional reprogramming during abiotic stress response in plants.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2023Review
- Review
- NDR/LATS-family protein kinase genes are indispensable for embryogenesis in Arabidopsis.FEBS open bio · 2021Article
- Genomic Analysis of Soybean PP2A-BFrontiers in plant science · 2021Article
- VIP1, a bZIP protein, interacts with the catalytic subunit of protein phosphatase 2A in Arabidopsis thaliana.Plant signaling & behavior · 2020Article
- Protein phosphatase 2A regulates the nuclear accumulation of the Arabidopsis bZIP protein VIP1 under hypo-osmotic stress.Journal of experimental botany · 2019Article
- OsbZIP81, A Homologue of Arabidopsis VIP1, May Positively Regulate JA Levels by Directly Targetting the Genes in JA Signaling and Metabolism Pathway in Rice.International journal of molecular sciences · 2019Article
- Possible inhibition of Arabidopsis VIP1-mediated mechanosensory signaling by streptomycin.Plant signaling & behavior · 2018Article
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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
Background and Aims: VIP1 is a bZIP transcription factor in Arabidopsis thaliana. VIP1 and its close homologues transiently accumulate in the nucleus when cells are exposed to hypo-osmotic and/or mechanical stress. Touch-induced root bending is enhanced in transgenic plants overexpressing a repression domain-fused form of VIP1 (VIP1-SRDXox), suggesting that VIP1, possibly with its close homologues, suppresses touch-induced root bending. The aim of this study was to identify regulators of these functions of VIP1 in mechanical stress responses. Methods: Co-immunoprecipitation analysis using VIP1-GFP fusion protein expressed in Arabidopsis plants identified calmodulins as VIP1-GFP interactors. In vitro crosslink analysis was performed using a hexahistidine-tagged calmodulin and glutathione S-transferase-fused forms of VIP1 and its close homologues. Plants expressing GFP-fused forms of VIP1 and its close homologues (bZIP59 and bZIP29) were submerged in hypotonic solutions containing divalent cation chelators, EDTA and EGTA, and a potential calmodulin inhibitor, chlorpromazine, to examine their effects on the nuclear-cytoplasmic shuttling of those proteins. VIP1-SRDXox plants were grown on medium containing 40 mm CaCl2, 40 mm MgCl2 or 80 mm NaCl. MCA1 and MCA2 are mechanosensitive calcium channels, and the hypo-osmotic stress-dependent nuclear-cytoplasmic shuttling of VIP1-GFP in the mca1 mca2 double knockout mutant background was examined. Key Results: In vitro crosslink products were detected in the presence of CaCl2, but not in its absence. EDTA, EGTA and chlorpromazine all inhibited both the nuclear import and the nuclear export of VIP1-GFP, bZIP59-GFP and bZIP29-GFP. Either 40 mm CaCl2or 80 mm NaCl enhanced the VIP-SRDX-dependent root bending. The nuclear-cytoplasmic shuttling of VIP1 was observed even in the mca1 mca2 mutant. Conclusions: VIP1 and its close homologues can interact with calmodulins. Their nuclear-cytoplasmic shuttling requires neither MCA1 nor MCA2, but does require calcium signalling. Salt stress affects the VIP1-dependent regulation of root bending.
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