ArticlePlant molecular biology2020
The sweet sorghum SbWRKY50 is negatively involved in salt response by regulating ion homeostasis.
Article in Plant molecular biology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.
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Who cites it
39 citing papers in PubMed, 82 citations in OpenAlex.
- Temporal dynamics of photosynthetic inhibition, antioxidant defense, and transcriptomic reprogramming in 'Crimson Seedless' grapevine under saline-alkali stress.Frontiers in plant science · 2026Article
- Multilevel analysis of salt stress responses in sorghum during seed germination.Frontiers in plant science · 2026Article
- Biotechnological and genetic innovations to enhance sorghum adaptation under climate change.Frontiers in plant science · 2026Review
- The transcription factor MdWRKY9 is involved in jasmonic acid-mediated salt stress tolerance in apple.Horticulture research · 2025Article
- The transcription factor ClWRKY61 interacts with ClLEA55 to enhance salt tolerance in watermelon.Horticulture research · 2025Article
- Comparative Transcriptome Analysis Reveals Mechanisms of Differential Salinity Tolerance BetweenGenes · 2024Article
- Integrated Transcriptomic, Proteomic, and Metabolomic Analyses Revealed Molecular Mechanism for Salt Resistance in Soybean (International journal of molecular sciences · 2024Article
- Establishment of a genome-editing system to create fragrant germplasm in sweet sorghum.aBIOTECH · 2024Article
- Okra WRKY Transcription Factor AeWRKY32 and AeWRKY70 Are Involved in Salt Stress Response.International journal of molecular sciences · 2024Article
- Review
- Overexpression ofPlants (Basel, Switzerland) · 2024Article
- Review
- Melatonin enhances KCl salinity tolerance by maintaining KPlant biotechnology journal · 2023Article
- Functional Characterisation of the Transcription FactorPlants (Basel, Switzerland) · 2023Article
- Physiological and Transcriptional Analyses Provide Insight into Maintaining Ion Homeostasis of Sweet Sorghum under Salt Stress.International journal of molecular sciences · 2023Article
- Review
- Review
- The role of WRKY transcription factors in exogenous potassium (KFrontiers in genetics · 2023Article
- Plant salinity stress, sensing, and its mitigation through WRKY.Frontiers in plant science · 2023Review
- Salinity pretreatment synergies heat shock toxicity in cyanobacteriumFrontiers in microbiology · 2023Article
Corrections and comments
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Authors and funding
7 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The WRKY transcription factor family is involved in responding to biotic and abiotic stresses. Its members contain a typical WRKY domain and can regulate plant physiological responses by binding to W-boxes in the promoter regions of downstream target genes. We identified the sweet sorghum SbWRKY50 (Sb09g005700) gene, which encodes a typical class II of the WRKY family protein that localizes to the nucleus and has transcriptional activation activity. The expression of SbWRKY50 in sweet sorghum was reduced by salt stress, and its ectopic expression reduced the salt tolerance of Arabidopsis thaliana plants. Compared with the wild type, the germination rate, root length, biomass and potassium ion content of SbWRKY50 over-expression plants decreased significantly under salt-stress conditions, while the hydrogen peroxide, superoxide anion and sodium ion contents increased. Real-time PCR results showed that the expression levels of AtSOS1, AtHKT1 and genes related to osmotic and oxidative stresses in over-expression strains decreased under salt-stress conditions. Luciferase complementation imaging and yeast one-hybrid assays confirmed that SbWRKY50 could directly bind to the upstream promoter of the SOS1 gene in A. thaliana. However, in sweet sorghum, SbWRKY50 could directly bind to the upstream promoters of SOS1 and HKT1. These results suggest that the new WRKY transcription factor SbWRKY50 participates in plant salt response by controlling ion homeostasis. However, the regulatory mechanisms are different in sweet sorghum and Arabidopsis, which may explain their different salt tolerance levels. The data provide information that can be applied to genetically modifying salt tolerance in different crop varieties.
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