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- Title
An improved protocol for the isolation of total genomic DNA from Labyrinthulomycetes.
- Authors
Ranasinghe, Chaminda; Harding, Rob; Hargreaves, Megan
- Abstract
Many protocols have been used for extraction of DNA from Thraustochytrids. These generally involve the use of CTAB, phenol/chloroform and ethanol. They also feature mechanical grinding, sonication, N freezing or bead beating. However, the resulting chemical and physical damage to extracted DNA reduces its quality. The methods are also unsuitable for large numbers of samples. Commercially-available DNA extraction kits give better quality and yields but are expensive. Therefore, an optimized DNA extraction protocol was developed which is suitable for Thraustochytrids to both minimise expensive and time-consuming steps prior to DNA extraction and also to improve the yield. The most effective method is a combination of single bead in TissueLyser (Qiagen) and Proteinase K. Results were conclusive: both the quality and the yield of extracted DNA were higher than with any other method giving an average yield of 8.5 µg/100 mg biomass.
- Subjects
NUCLEIC acid isolation methods; THRAUSTOCHYTRIALES; PROTISTA; OMEGA-3 fatty acids; SERINE proteinases
- Publication
Biotechnology Letters, 2015, Vol 37, Issue 3, p685
- ISSN
0141-5492
- Publication type
Article
- DOI
10.1007/s10529-014-1712-1