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tobacco transformation


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#1 deespike

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Posted 04 May 2012 - 07:38 AM

Hi all

I have been doing this tobacco transformation using leaf disc as explant for quite some time, but i am facing so many problems. Please tissue culture experts help me out.

I have always marked that after washing the leaves cocultivated with agrobacterium, I grow them in selection medium in MS+ BAP+NAA medium with kanamycin (100 mg/l)and cefatoxime (500 mg/l) as antibiotics but I find constant agrobacterium overgrowth for weeks together even if i transfer to fresh selection media.

Please help me as i am not able to understand the situation.

#2 tamarine

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Posted 17 May 2012 - 04:59 PM

Hi there,


Do you measure the OD of Agrobacterium?
Some points that you have to concerned with are: Adjust the OD of Agrobacterium just on exactly written in the protocol, place the cocultivation dishes in the temperature not over than 25-26 degree Celcius, increase the antibiotic concentration if it still didnt work (but, it could poise to the explant)


Good luck




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