ArticleMethods in molecular biology (Clifton, N.J.)2024
Quantification of Xylem-Specific Thermospermine-Dependent Translation of SACL Transcripts with Dual Luciferase Reporter System.
Article in Methods in molecular biology (Clifton, N.J.), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 3 citations in OpenAlex.
- A multiplex hextuple luciferase assay for advancing cellular signaling analysis in plant cells.Plant communications · 2026Article
- A GDSL motif-containing lipase modulates Sclerotinia sclerotiorum resistance in Brassica napus.Plant physiology · 2024Article
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4 authors at 2 institutions in 1 country.
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Abstract
Thermospermine (Tspm) is a polyamine found to play a crucial role in xylem development in Arabidopsis thaliana. Tspm promotes the translation of the SACL genes by counteracting the activity of a cis element in their 5'-leader region that suppresses the translation of the main ORF. Here we describe a method to test the Tspm-dependent translational regulation of the 5'-leader of the SACL mRNAs in Nicotiana benthamiana leaves and A. thaliana mesophyll protoplasts with a dual luciferase assay. The dual luciferase reporter system is used to assess gene expression and is based on the detection of the Firefly luciferase luminescence driven by a specific promoter. However, it can also be used to evaluate the cis elements found in 5'-leader that influence the translation of the main ORF in a transcript. We have used a modified version of the pGreenII 0800 LUC plasmid carrying a double 35S promoter, followed by a poly-linker sequence in phase with the Firefly luciferase gene (pGreen2x35SLUC) where the full 5'-leader sequence of SACL3 was cloned. This construct was used for Agrobacterium tumefaciens infiltration of N. benthamiana leaves and for transfection of A. thaliana mesophyll protoplasts, followed by mock or Tspm treatments. The resulting translation of the Firefly luciferase in these organisms and conditions was then tested by measuring luminescence with the dual luciferase assay and a luminometer. These experiments have allowed us to quantify the positive effect of Tspm in the translation of SACL3 transcripts.
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