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Methods and Technical Advances

Accurate sodium bisulfite sequencing in plants

Pages 47-49 | Received 13 Oct 2009, Accepted 08 Nov 2009, Published online: 01 Jan 2010
 

Abstract

DNA cytosine methylation is a conserved epigenetic modification frequently correlating with transcriptional silencing in a wide variety of eukaryotic organisms. Sodium bisulfite treatment of DNA converts unmethylated cytosine to uracil, while 5-methylated cytosine is protected. We describe techniques that ensure reliable sequencing data following sodium bisulfite conversion and to avoid common pitfalls such as amplification of unconverted DNA and inclusion of sibling clones.