Abstract
Strong constitutive promoters form a cornerstone for basic and applied research using transgenic plants. GUS (β-glucuronidase) expression levels from constructs containing RUBQ1 or RUB2 rice ubiquitin promoters were 8- to 35-fold higher in transgenic rice [Oryza sativa (L.)] plants, respectively, when compared to the 35S promoter. Deletion analysis of the 5′-upstream region of RUBQ2 revealed a putative enhancer region that produced a 2.4-fold increase in transient GUS expression. Southern blot analysis showed that three to seven copies of the GUS gene were stably inserted into R0 and R1 plants and inherited in a monogenic fashion.
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Abbreviations
- BAR :
-
Native phosphinothricin acetyltransferase
- GUS :
-
β-Glucuronidase
- HPH :
-
Hygromycin phosphotransferase
- LUC :
-
Luciferase
- PAT :
-
Synthetic phosphinothricin acetyltransferase
- PCR :
-
Polymerase chain reaction
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Acknowledgements
We thank Dr. Peter Quail (USDA Plant Gene Expression Center, Albany, Calif.) for plasmid pAHC25, and Dr. M.C. Rush, Department of Plant Pathology and Crop Physiology, Louisiana State University, Baton Rouge, La., for Taipei 309 suspension cells. This research was funded in part by the Louisiana Rice Research Board.
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Communicated by K.K. Kamo
Approved for publication by the Director of the Louisiana Agricultural Experiment Station as manuscript number 02-14-0709.
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Wang, J., Oard, J.H. Rice ubiquitin promoters: deletion analysis and potential usefulness in plant transformation systems. Plant Cell Rep 22, 129–134 (2003). https://doi.org/10.1007/s00299-003-0657-y
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DOI: https://doi.org/10.1007/s00299-003-0657-y