Article : Agrobacterium Tumefaciens -mediated Transformation Of Tomato (Solanum Lycopersicum)

Title

Agrobacterium Tumefaciens -mediated Transformation Of Tomato (Solanum Lycopersicum)

Author

Shanthala Mallikarjunaiah; Sowmya Moudgalya

The present investigation describes the development of genetically engineered tomato plants with annexin gene. The alkaline lysis method is used to isolate the plasmid DNA of pUC 19 vector having the desired Annexin gene (3Kbp) and the plasmid DNA of the binary vector pGPTV (13 Kbp) from E.coli (DH5α strain). The purified pUC 19/Annexin and pGPTV plasmid were restriction digested using the restriction enzymes EcoRI and XbaI as a linearised band was eluted from the gel. The digested plasmid shown in the band pattern in the gel were cut by gel elution technique and purified from other reaction mixture. Then the dot spot test was done to calculate the concentration of pGPTV and Annexin gene. The recombinant PGPTV plasmid with the annexin gene in Agrobacterium tumefaciens MTCC 431 was mobilized and transferred to plant system through the mobilization helper plasmid pRK2013. The kanamycin resistance gene (NPT II) was used as a selective marker. The calli used for isolating the genomic DNA which was then amplified for confirmation of annexin gene. The nptII gene of 800 bp serves as a selectable marker system in plants and its amplification confirmed the presence of annexin gene in transgenic plants by PCR method.

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