Chapter title |
A Bioinformatic Pipeline to Estimate Ploidy Level from Target Capture Sequence Data Obtained from Herbarium Specimens.
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Book title |
Plant Cytogenetics and Cytogenomics
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Published in |
Methods in molecular biology, January 2023
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DOI | 10.1007/978-1-0716-3226-0_5 |
Pubmed ID | |
Book ISBNs |
978-1-07-163225-3, 978-1-07-163226-0
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Authors |
Viruel, Juan, Hidalgo, Oriane, Pokorny, Lisa, Forest, Félix, Gravendeel, Barbara, Wilkin, Paul, Leitch, Ilia J, Leitch, Ilia J. |
Abstract |
Whole genome duplications (WGD) are frequent in many plant lineages; however, ploidy level variation is unknown in most species. The most widely used methods to estimate ploidy levels in plants are chromosome counts, which require living specimens, and flow cytometry estimates, which necessitate living or relatively recently collected samples. Newly described bioinformatic methods have been developed to estimate ploidy levels using high-throughput sequencing data, and these have been optimized in plants by calculating allelic ratio values from target capture data. This method relies on the maintenance of allelic ratios from the genome to the sequence data. For example, diploid organisms will generate allelic data in a 1:1 proportion, with an increasing number of possible allelic ratio combinations occurring in individuals with higher ploidy levels. In this chapter, we explain step-by-step this bioinformatic approach for the estimation of ploidy level. |
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