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1

A simple and reliable method for DNA extraction from bivalve mantle

100%
Aranishi F., Okimoto T.
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issue 3
251-254
EN
A simple and reliable method was developed for extracting genomic DNA from preserved mantle tissues of Pacific oyster Crassostrea gigas for reproducible PCR amplification. The method was based on destruction of the tissue using Proteinase K, Chelex 100 resin, detergents, and urea, followed by preferential capturing of genomic DNA with silica particles. Approximately 5 mg of mantle tissue provided a sufficient quality and quantity of DNA for several hundreds of PCR reactions amplifying the hypervariable mitochondrial DNA intergenic spacer, which is a useful genetic marker for population structure analysis of Pacific oyster. The method can be applied for DNA preparation from not only fresh and frozen but also ethanol-preserved mantle tissues, so this rapid and economical method can serve for investigating a large number of bivalve specimens collected in the field and next transported in ethanol at ambient temperature.
2

Complete sequences of maternally inherited mitochondrial genomes in mussels Unio pictorum (Bivalvia, Unionidae)

88%
Soroka M., Burzynski A.
Journal of Applied Genetics
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2010
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vol. 51
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issue 4
469-476
EN
Mitochondrial genomes are frequently used to infer phylogenetic relationships. Some taxa are, however, poorly represented. To facilitate better understanding of the potential of mitochondrial genome data in freshwater mussels, we present here, for the first time, the mitochondrial sequences of 4 complete F-type mitochondrial genomes from the European freshwater bivalve Unio pictorum (Unionidae). These genomes are very compact (15 761 bp) but have a typical gene complement for bilaterian mitochondrial genomes and a very similar organization to other unionid genomes available in databases. Very low nucleotide diversity within the species suggests a small effective population size of Polish U. pictorum, a phenomenon of potential importance for environmental management policies.
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