Premise: Developing an effective and easy-to-use high-molecular-weight (HMW) DNA extraction method is essential for genomic research, especially in the era of third-generation sequencing. To efficiently use technologies capable of generating long-read sequences, it is important to maximize both the length and purity of the extracted DNA; however, this is frequently difficult to achieve with plant samples.

Methods And Results: We present a HMW DNA extraction method that combines (1) a nuclei extraction method followed by (2) a traditional cetyltrimethylammonium bromide (CTAB) DNA extraction method for plants with optimized extraction conditions that influence HMW DNA recovery. Our protocol produced DNA fragments (percentage of fragments >20 kbp) that were, on average, ca. five times longer than those obtained using a commercial kit, and contaminants were removed more effectively.

Conclusions: This effective HMW DNA extraction protocol can be used as a standard protocol for a diverse array of taxa, which will enhance plant genomic research.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10278927PMC
http://dx.doi.org/10.1002/aps3.11528DOI Listing

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