کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2819360 1569927 2007 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The nitrate reductase gene-switch: A system for regulated expression in transformed cells of Dunaliella salina
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی ژنتیک
پیش نمایش صفحه اول مقاله
The nitrate reductase gene-switch: A system for regulated expression in transformed cells of Dunaliella salina
چکیده انگلیسی

The control of promoter activity by nitrogen source has recently emerged as an intriguing system for regulated expression of the heterologous genes. The purpose of this work was to investigate whether heterologous gene expression in transgenic Dunaliella salina would be controlled by an inducible promoter. Here we identify that the nitrate reductase (NR) transcripts of D. salina are induced by nitrate but repressed by ammonium. The bar gene integrated into the genome of D. salina is transcribed by a promoter of the NR gene from D. salina and the bar transcripts are induced by nitrate but repressed by ammonium. PPT-resistance of transformants disappears when they are transferred from nitrate-containing medium to ammonium-containing medium. The findings of this study demonstrate that the promoter of the D. salina NR gene can be used to control expression of the heterologous genes in transgenic D. salina.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Gene - Volume 403, Issues 1–2, 15 November 2007, Pages 132–142
نویسندگان
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