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Transient Assay System for the Analysis ofPR-1aGene Promoter in Tobacco BY-2 Cells
Author(s) -
Sachiko Ono,
Tsuneyuki Tanaka,
Yuriko Watakabe,
Kazuyuki Hiratsuka
Publication year - 2004
Publication title -
bioscience biotechnology and biochemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.509
H-Index - 116
eISSN - 1347-6947
pISSN - 0916-8451
DOI - 10.1271/bbb.68.803
Subject(s) - luciferase , reporter gene , gene expression , gene , npr1 , salicylic acid , microbiology and biotechnology , biology , promoter , regulation of gene expression , systemic acquired resistance , arabidopsis , chemistry , transfection , genetics , mutant , medicine , heart failure , natriuretic peptide
In order to develop a rapid and versatile assay system suitable for the analysis of regulated expression of tobacco pathogenesis-related protein 1a (PR-1a) gene, we investigated the use of the transient gene expression system in tobacco BY-2 cells by microprojectile bombardment. Using dual luciferase assay as a reporter gene expression detection system, we observed significant induction of PR-1a promoter activity by salicylic acid (SA) treatment. On the other hand, treatment with 4-hydroxybenzoic acid (4-HBA) resulted in no detectable increase in luciferase activity. Co-expression of a trans-acting factor, the NPR1/NIM1 protein of Arabidopsis, resulted in the induction of higher expression levels of the PR-1a promoter. These results suggest that the assay system is applicable for the analysis of factors involved in the regulated expression of SA-inducible defense-related genes.

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