ArticleGenes & genomics2021
Identification of a 193 bp promoter region of TaNRX1-D gene from common wheat that contributes to osmotic or ABA stress inducibility in transgenic Arabidopsis.
Article in Genes & genomics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed, 13 citations in OpenAlex.
- The Wheat NucleoredoxinPlants (Basel, Switzerland) · 2026Article
- Genome-wide identification of the nuclear redox protein gene family revealed its potential role in drought stress tolerance in rice.Frontiers in plant science · 2025Article
- Identification, Cloning, and Characterization of Two Acupuncture-Injury-Inducing Promoters in Rice.International journal of molecular sciences · 2024Article
- Identification of the inducible activity in the promoter of the soybeanPhysiology and molecular biology of plants : an international journal of functional plant biology · 2023Article
- Genome-wide identification of foxtail millet's TRX family and a functional analysis ofFrontiers in plant science · 2022Article
- Genome-wide identification, characterization, evolution, and expression pattern analyses of the typical thioredoxin gene family in wheat (Frontiers in plant science · 2022Article
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9 authors at 4 institutions in 1 country.
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Abstract
backgroundCloning and characterizing the drought-inducible promoters is essential for their use in crop resistance's genetic improvement. Previous studies have shown that the TaNRX1-D gene participates in regulating the response of wheat to drought stress. However, its promoter has not yet been identified.
objectiveIn this study, we aimed to characterize the promoter of the TaNRX1-D gene.
methodsThe promoter of TaNRX1-D (named P0, 2081 bp) was isolated from common wheat with several cis-acting elements that regulate in response to abiotic stresses and some core cis-acting elements. Functional verification of the promoter, eight 5'-deletion fragments of TaNRX1-D promoter, was fused to the β-glucuronidase (GUS) gene P0::GUS ~ P7::GUS and transformed into Arabidopsis, respectively. Agrobacterium-mediated GUS transient assay the P6a and P6b promoter regions in tobacco leaves under normal, osmotic or ABA stress.
resultsActivity analysis of the full-length promoter (P0) showed that the intensity of stronger β-glucuronidase (GUS) staining in the roots and leaves was obtained during the growth of transgenic Arabidopsis. P0::GUS displayed the GUS activity was much higher in the roots and leaves than in other parts of the transgenic plant under normal conditions, which was similarly within wheat. Analysis of the 5'-deletion fragments revealed that P0::GUS ~ P6::GUS responded well upon exposure to osmotic (polyethylene glycol-6000, PEG6000) and abscisic acid (ABA) stress treatments and expressed significantly higher GUS activity than the CaMV35S promoter (35S::GUS), while P7::GUS did not. GUS transient assay in tobacco leaves showed that the GUS activities of P6a and P6b were lower than P6 in the PEG6000 and ABA stresses.
conclusionThe 193 bp (P6) segment was considered the core region of TaNRX1-D responding to PEG6000 or ABA treatment. GUS activity assay in transgenic Arabidopsis showed that this segment was sufficient for the PEG6000 or ABA stress response. The identified 193 bp promoter of TaNRX1-D in this study will help breed osmotic or ABA tolerant crops. The 36 bp segment between P6 and P6b (-193 to -157 bp) was considered the critical sequence for the TaNRX1-D gene responding to PEG6000 or ABA treatment.
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