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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Transformation of Montmorency sour cherry (Prunus cerasus L.) and Gisela 6 (P. cerasus x P. canescens) cherry rootstock mediated by Agrobacterium tumefaciens.

Sour cherry (Prunus cerasus L.) scion cv. Montmorency and rootstock cv. Gisela 6 (P. cerasus x P. canescens) were transformed using Agrobacterium tumefaciens strain EHA105:pBISN1 carrying the neomycin phosphotransferase gene (nptII) and an intron interrupted ss-glucuronidase (GUS) reporter gene (gusA). Whole leaf explants were co-cultivated with A. tumefaciens, and selection and regeneration of transformed cells and shoots of both cultivars was carried out for 12 weeks on selection medium containing 50 mg l(-1) kanamycin (Km) and 250 mg l(-1) timentin. These media were [Quoirin and Lepoivre (Acta Hortic 78:437-442, 1977)] supplemented with 0.5 mg l(-1) benzylaminopurine (BA) + 0.05 mg l(-1) indole-3-butyric acid (IBA), and woody plant medium [Lloyd and McCown (Proc Int Plant Prop Soc 30:421-427, 1980)] containing 2.0 mg l(-1) BA + 1.0 mg l(-1) IBA for cv. Montmorency and cv. Gisela 6, respectively. Seven out of 226 (3.1%) explants of cv. Montmorency and five out of 152 (3.9%) explants of cv. Gisela 6 produced 30/39 GUS- and PCR-positive shoots from the cut midribs via an intermediate callus. Southern analysis of the GUS- and PCR-positive transformants confirmed stable integration of the transgenes with 1-3 copy numbers in the genomes of seven lines of cv. Montmorency and five of cv. Gisela 6. The selected transformants have a normal phenotype in vitro.[1]

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