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Updated: Dec 1, 2025
06:58
Collection and Extraction of Saliva DNA for Next Generation Sequencing
Published on: August 27, 2014
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A targeted sequence capture array for phylogenetics and population genomics in the Salicaceae
Brian J Sanderson1,2, Stephen P DiFazio2, Quentin C B Cronk3
1Department of Biological Sciences Texas Tech University Lubbock Texas 79409-3131 USA.
Applications in Plant Sciences
|November 9, 2020
Summary
This study developed a high-efficiency sequence capture array for Salicaceae, successfully resolving complex phylogenetic relationships within the *Salix* genus. The method also provides valuable data for population genomics research.
Area of Science:
- Botany
- Genetics
- Evolutionary Biology
Background:
- The Salicaceae family, particularly the *Salix* genus, presents significant taxonomic challenges due to high species diversity, frequent hybridization, and polyploidy.
- Previous molecular barcoding efforts have been insufficient to fully resolve the intricate species relationships within many *Salix* sections.
Purpose of the Study:
- To develop a robust molecular method for resolving phylogenetic relationships in the speciose *Salix* genus.
- To assess the utility of targeted exonic sequencing for population genomic studies within Salicaceae.
Main Methods:
- Designed sequence capture probes targeting exonic regions of 972 genes (300-1200 bp each).
- Applied these probes to three species of *Populus* and three species of *Salix* to capture sequence data.
Main Results:
- Achieved high capture efficiency, recovering sequence data for almost all targeted genes across the sampled species.
- Successfully constructed a species tree, analyzed gene tree concordance, and generated population genomic summary statistics.
Conclusions:
- The developed sequence capture array demonstrates exceptional efficiency for phylogenetic studies in *Populus* and *Salix*.
- The targeted loci are highly promising for future population genomic investigations within these genera.
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