Archives for July 3, 2013

Cheung Lab, Day 3

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Preparing tobacco plants for a leaf transformation

On Day 3 of working in Dr. Cheung’s lab, we worked on starting a leaf disc transformation.  We used leaves from tobacco plants and cut out small discs using a leaf borer, tweezers, and scalpels.  These discs are going to be growing for about 5 weeks, using a variety of hormones.

There are multiple methods of transformation, including using Agrobacterium directly on the tissue-the method we used today, which is a live tissue-culture based method.  Transformation is the process of changing the genetic code of an organism, and creating a genetically modified organism.

It took us a couple of hours to prepare the discs, to which we added agrobacterium to transform the discs.  The leaf-discs were placed in a growth medium, and this medium will be changed on Friday.

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Leaf-discs completed with Agrobacterium added