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      Genetic Diversity of Buckwheat Cultivars (Fagopyrum tartaricum Gaertn.) Assessed with SSR Markers Developed from Genome Survey Sequences

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          The impact of next-generation sequencing technology on genetics.

          If one accepts that the fundamental pursuit of genetics is to determine the genotypes that explain phenotypes, the meteoric increase of DNA sequence information applied toward that pursuit has nowhere to go but up. The recent introduction of instruments capable of producing millions of DNA sequence reads in a single run is rapidly changing the landscape of genetics, providing the ability to answer questions with heretofore unimaginable speed. These technologies will provide an inexpensive, genome-wide sequence readout as an endpoint to applications ranging from chromatin immunoprecipitation, mutation mapping and polymorphism discovery to noncoding RNA discovery. Here I survey next-generation sequencing technologies and consider how they can provide a more complete picture of how the genome shapes the organism.
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            Genome fingerprinting by simple sequence repeat (SSR)-anchored polymerase chain reaction amplification.

            Simple sequence repeats (SSR), or microsatellites, are ubiquitous in eukaryotic genomes. Here we demonstrate the utility of microsatellite-directed DNA fingerprinting by polymerase chain reaction (PCR) amplification of the interrepeat region. No sequencing is required to design the oligonucleotide primers. We tested primers anchored at 3' or 5' termini of the (CA)n repeats, extended into the flanking sequence by 2 to 4 nucleotide residues [3'-anchored primers: (CA)8RG, (CA)8RY, and (CA)7RTCY; and 5'-anchored primers: BDB(CA)7C, DBDA(CA)7, VHVG(TG)7 and HVH(TG)7T]. Radioactively labeled amplification products were analyzed by electrophoresis, revealing information on multiple genomic loci in a single gel lane. Complex, species-specific patterns were obtained from a variety of eukaryotic taxa. Intraspecies polymorphisms were also observed and shown to segregate as Mendelian markers. Inter-SSR PCR provides a novel fingerprinting approach applicable for taxonomic and phylogenetic comparisons and as a mapping tool in a wide range of organisms. This application of (CA)n repeats may be extended to different microsatellites and other common dispersed elements.
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              Tartary buckwheat (Fagopyrum tataricum Gaertn.) as a source of dietary rutin and quercitrin.

              Two samples of tartary buckwheat (Fagopyrum tataricum Gaertn.) from China and one from Luxembourg were studied by high-performance liquid chromatography (HPLC) to reveal the possibilities of growing tartary buckwheat herb as a possible source of rutin, quercetin, and quercitrin. The content of rutin was determined as up to 3% dry weight (DW) in tartary buckwheat herb. Quercitrin values were in the range of 0.01-0.05% DW. Only traces of quercetin were detected in just some of the samples. Tartary buckwheat seeds contained more rutin (about 0.8-1.7% DW) than common buckwheat seeds (0.01% DW). Rutin and quercetin content in seeds depends on variety and growing conditions. Tartary buckwheat seeds contained traces of quercitrin and quercetin, which were not found in common buckwheat seeds.
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                Author and article information

                Journal
                Plant Molecular Biology Reporter
                Plant Mol Biol Rep
                Springer Nature
                0735-9640
                1572-9818
                February 2016
                July 2015
                : 34
                : 1
                : 233-241
                Article
                10.1007/s11105-015-0907-5
                e62e74b4-b6fa-4c13-8900-a43c0ead8e10
                © 2016
                History

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