Abstract
In this study, we developed a nuclear DNA extraction protocol for Next Generation Sequencers (NGS). We applied this extraction method to grapevines and coffee trees, which are known to contain many secondary metabolites. The nuclear DNA obtained was sequenced by the 454/GS-FLX method. We obtained excellent results, with less than 4% cytoplasmic DNA, in a similar way to a BAC (Bacterial Artificial Chromosome)-building protocol. We also compared our protocol with a classic DNA extraction using specific cytoplasmic DNA amplification. Results showed a lower cytoplasmic DNA contamination with the new protocol. The method presented here is fast and economical. The DNA obtained is of high quality, with a low level of cytoplasmic DNA contamination, and very efficient for the construction of sequencing libraries.
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