ArticleScientific reports2016
The Wheat GT Factor TaGT2L1D Negatively Regulates Drought Tolerance and Plant Development.
Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.
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37 citing papers in PubMed, 72 citations in OpenAlex.
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- Genome-wide identification of potato Trihelix gene family and its response to different abiotic stresses.BMC plant biology · 2025Article
- Trihelix Transcription Factor OsTGS1 Regulates Grain Size and Weight in Rice.Rice (New York, N.Y.) · 2025Article
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- Genome-Wide Identification of the Trihelix Transcription Factor Family and Functional Analysis ofInternational journal of molecular sciences · 2024Article
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- Duplicate Genes Contribute to Variability in Abiotic Stress Resistance in Allopolyploid Wheat.Plants (Basel, Switzerland) · 2023Review
- Transcriptomic Profiling Highlights the ABA Response Role ofInternational journal of molecular sciences · 2023Article
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- Article
- Overexpression of the cotton trihelix transcription factorFrontiers in plant science · 2023Article
- Genome-wide characterization and identification of Trihelix transcription factors and expression profiling in response to abiotic stresses in Chinese Willow (Frontiers in plant science · 2023Article
- Volatile compounds of Bacillus pseudomycoides induce growth and drought tolerance in wheat (Triticum aestivum L.).Scientific reports · 2022Article
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Authors and funding
8 authors at 5 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
GT factors are trihelix transcription factors that specifically regulate plant development and stress responses. Recently, several GT factors have been characterized in different plant species; however, little is known about the role of GT factors in wheat. Here, we show that TaGT2L1A, TaGT2L1B, and TaGT2L1D are highly homologous in hexaploid wheat, and are localized to wheat chromosomes 2A, 2B, and 2D, respectively. These TaGT2L1 genes encode proteins containing two SANT domains and one central helix. All three homologs were ubiquitously expressed during wheat development and were responsive to osmotic stress. Functional analyses demonstrated that TaGT2L1D acts as a transcriptional repressor; it was able to suppress the expression of AtSDD1 in Arabidopsis by binding directly to the GT3 box in its promoter that negatively regulates drought tolerance. TaGT2L1D overexpression markedly increased the number of stomata and reduced drought tolerance in gtl1-3 plants. Notably, ectopic expression of TaGT2L1D also affected floral organ development and overall plant growth. These results demonstrate that TaGT2L1 is an ortholog of AtGTL1, and that it plays an evolutionarily conserved role in drought resistance by fine tuning stomatal density in wheat. Our data also highlight the role of TaGT2L1 in plant growth and development.
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