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Title: Targeted sequencing of plant genomes

Author: Huynh, Mark D.;

Date: 2014

Source: Provo, UT: Brigham Young University. 59 p. Thesis.

Publication Series: Theses

Description: Next-generation sequencing (NGS) has revolutionized the field of genetics by providing a means for fast and relatively affordable sequencing. With the advancement of NGS, wholegenome sequencing (WGS) has become more commonplace. However, sequencing an entire genome is still not cost effective or even beneficial in all cases. In studies that do not require a whole-genome survey, WGS yields lower sequencing depth and sequencing of uninformative loci. Targeted sequencing utilizes the speed and low cost of NGS while providing deeper coverage for desired loci. This thesis applies targeted sequencing to the genomes of two different, non-model plants, Artemisia tridentate (sagebrush) and Lupinus luteus (yellow lupine). We first targeted the transcriptomes of three species of sagebrush (Artemisia) using RNA-seq. By targeting the transcriptome of sagebrush we have built a resource of transcripts previously unmatched in sagebrush and identify transcripts related to terpenes. Terpenes are of growing interest in sagebrush because of their ability to identify certain species of sagebrush and because they play a role in the feeding habits of the threatened sage-grouse. Lastly, using paralogs with synonymous mutations we reconstructed an evolutionary time line of ancient genome duplications. Second, we targeted the flanking loci of recognition sites of two endorestriction enzymes in genome of L. luteus genome through genotyping-by-sequencing (GBS). GBS of yellow lupine provided enough single-nucleotide polymorphic loci for the construction of a genetic map of yellow lupine. Additionally we compare GBS strategies for plant species without a reference genome sequence.

Keywords: genotyping-by-sequencing, lupine, plant genomes, sequencing, sagebrush, transcriptome, terpenes

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Huynh, Mark D. 2014. Targeted sequencing of plant genomes. Provo, UT: Brigham Young University. 59 p. Thesis.


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