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Evaluation of microprojectile-mediated DNA delivery and reporter genes for genetic transformation of the Mediterranean cypress (Cupressus sempervirens L.). Plant Cell Reports 18, 198-202.
| Lambardi M., Lachance, D., Seguin, A., Charest, P. J. (1998).
| Embryonal-suspensor tissue (EST) of Mediterranean cypress (Cupressus sempervirens L.) was tested for microprojectile-DNA delivery (by the PDS-1000/He device) for different subculture periods (9, 15, and 21 days) using the plasmid vectors pRT99GUS (containing the beta-glucuronidase (GUS) and neomycin phosphotransferase (NPT II) genes, and the CaMV 35S promoter), pBI426 (with a GUS::NPT II fusion gene under the control of a duplicated 35S RNA promoter), and pCGUdelta0 (containing the GUS gene with the ubiquitin intron, under the control of the sunflower ubiquitin promoter). The relative strengths of the promoters as determined by GUS assays were sunflower ubiquitin>35S-35S-AMVE>35S. The highest expression level was observed when 15-day-subcultured EST was bombarded with the pCGUdelta0 gene construct, which also showed high activity of the chloramphenicol acetyltransferase and NPT II genes. Green fluorescent areas were observed on EST when bombarded with the p35S-GFP plasmid, carrying the gene for the green fluorescent protein from the bioluminescent jellyfish Aequorea victoria.
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