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Genomic Southern Blot Analysis

 Last Update: 2021-01-11
 Source: Internet
 Author: User

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This chapter describes a detailed protocol for genomic Southern blot analysis which can be used to detect transgene or endogenous gene sequences in cereal genomes. The protocol follows a standard approach that has been shown to generate high-quality results: size fractionation of genomic
DNA
; capillary transfer to a nylon membrane; hybridization with a digoxigenin-labelled probe; and detection using a chemiluminescent-based system. High sensitivity and limited background are key to successful Southern blots. The critical steps in this protocol are complete digestion of the right quantity of DNA, careful handling of the membrane to avoid unnecessary background, and optimization of probe concentration and temperatures during the hybridization step. Detailed instructions on how to successfully master these techniques are provided.

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