Characterization of Switchgrass Ubiquitin Gene Promoters for Plant Transformation
Author Information
Author(s): Mann David GJ, King Zachary R, Liu Wusheng, Joyce Blake L, Percifield Ryan J, Hawkins Jennifer S, LaFayette Peter R, Artelt Barbara J, Burris Jason N, Mazarei Mitra, Bennetzen Jeffrey L, Parrott Wayne A, Stewart Charles N Jr
Primary Institution: Department of Plant Sciences, University of Tennessee
Hypothesis
The ubiquitin gene promoters from switchgrass can drive strong expression of transgenes in various plant species.
Conclusion
The PvUbi1 and PvUbi2 promoters are effective for driving transgene expression in switchgrass, rice, and tobacco.
Supporting Evidence
- Both PvUbi1 and PvUbi2 were expressed in all examined switchgrass tissues.
- The PvUbi1 and PvUbi2 promoters showed strong expression in switchgrass and rice callus.
- GUS staining demonstrated that the promoters drove expression in all examined tissues.
- The PvUbi2 promoter resulted in significantly higher expression levels than the CaMV 35S promoter.
Takeaway
Scientists found two genes in switchgrass that help plants make proteins. These genes can be used to help other plants grow better.
Methodology
The study involved cloning and characterizing two switchgrass ubiquitin genes, creating reporter constructs, and testing their expression in various plant species.
Limitations
The study did not explore the effects of heat shock on the expression of the promoters in switchgrass.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website