PMID- 28775768 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240326 IS - 1759-8753 (Print) IS - 1759-8753 (Electronic) VI - 8 DP - 2017 TI - Targeted identification of TE insertions in a Drosophila genome through hemi-specific PCR. PG - 10 LID - 10.1186/s13100-017-0092-1 [doi] LID - 10 AB - BACKGROUND: Transposable elements (TEs) are major components of eukaryotic genomes and drivers of genome evolution, producing intraspecific polymorphism and interspecific differences through mobilization and non-homologous recombination. TE insertion sites are often highly variable within species, creating a need for targeted genome re-sequencing (TGS) methods to identify TE insertion sites. METHODS: We present a hemi-specific PCR approach for TGS of P-elements in Drosophila genomes on the Illumina platform. We also present a computational framework for identifying new insertions from TGS reads. Finally, we describe a new method for estimating the frequency of TE insertions from WGS data, which is based precise insertion sites provided by TGS annotations. RESULTS: By comparing our results to TE annotations based on whole genome re-sequencing (WGS) data for the same Drosophilamelanogaster strain, we demonstrate that TGS is powerful for identifying true insertions, even in repeat-rich heterochromatic regions. We also demonstrate that TGS offers enhanced annotation of precise insertion sites, which facilitates estimation of TE insertion frequency. CONCLUSIONS: TGS by hemi-specific PCR is a powerful approach for identifying TE insertions of particular TE families in species with a high-quality reference genome, at greatly reduced cost as compared to WGS. It may therefore be ideal for population genomic studies of particular TE families. Additionally, TGS and WGS can be used as complementary approaches, with TGS annotations identifying more annotated insertions with greater precision for a target TE family, and WGS data allowing for estimates of TE insertion frequencies, and a broader picture of the location of non-target TEs across the genome. FAU - Zhang, Shuo AU - Zhang S AD - Department of Biology and Biochemistry, University of Houston, 3455 Cullen Blvd. Suite 342, Houston, TX 77204 USA. ISNI: 0000 0004 1569 9707. GRID: grid.266436.3 FAU - Kelleher, Erin S AU - Kelleher ES AUID- ORCID: 0000-0002-1827-067X AD - Department of Biology and Biochemistry, University of Houston, 3455 Cullen Blvd. Suite 342, Houston, TX 77204 USA. ISNI: 0000 0004 1569 9707. GRID: grid.266436.3 LA - eng PT - Journal Article DEP - 20170728 PL - England TA - Mob DNA JT - Mobile DNA JID - 101519891 PMC - PMC5534036 COIS- ETHICS APPROVAL AND CONSENT TO PARTICIPATE: Not applicable. CONSENT FOR PUBLICATION: Not applicable. COMPETING INTERESTS: Not applicable. PUBLISHER'S NOTE: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. EDAT- 2017/08/05 06:00 MHDA- 2017/08/05 06:01 PMCR- 2017/07/28 CRDT- 2017/08/05 06:00 PHST- 2017/04/14 00:00 [received] PHST- 2017/07/10 00:00 [accepted] PHST- 2017/08/05 06:00 [entrez] PHST- 2017/08/05 06:00 [pubmed] PHST- 2017/08/05 06:01 [medline] PHST- 2017/07/28 00:00 [pmc-release] AID - 92 [pii] AID - 10.1186/s13100-017-0092-1 [doi] PST - epublish SO - Mob DNA. 2017 Jul 28;8:10. doi: 10.1186/s13100-017-0092-1. eCollection 2017.