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Construction of Rice Site-Specific Chloroplast Transformation Vector and Transient Expression of EGFP Gene in Dunaliella Salina

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Chloroplast is a new hotspot in the field of plant transformation system of plant genetic engineering. Plastid transformation has several advantages: high expression, multiple expressed genes in a single transformation event, absence of gene silencing, et al. A series of elements for construction of dicistronic site-specific integration expression vector of rice chloroplast have been cloned, including trnI-trnA (rice chloroplast homologous recombination fragments), Prrn (16S rRNA operon promotor), PpsbA (the 3′ untranslated region of the chloroplastpsbA gene), hptII gene (encoding hygromycin phosphotransferase) and EGFP (encoding enhanced green fluorescence protein). All the elements were constructed into a rice chloroplast dicistronic expression vector pCTE04 (-trnI-Prrn-RBS-hptII-RBS-EGFP-PpsbA- trnA-). Then pCTE04 was introduced into chloroplasts of Dunaliella salina through particle bombardment. Strong green fluorescence was observed in chloroplasts of some bombarded Dunaliella salina cells under a stereo fluorescence microscope, indicating that pCTE04 could be expressed in Dunaliella salina chloroplasts transiently. It provides a solid foundation for further genetic engineering in rice chloroplast transformation.


Document Type: Research Article


Publication date: December 1, 2011

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  • Journal of Biomedical Nanotechnology (JBN) is a peer-reviewed multidisciplinary journal providing broad coverage in all research areas focused on the applications of nanotechnology in medicine, drug delivery systems, infectious disease, biomedical sciences, biotechnology, and all other related fields of life sciences.
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