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Enhanced genome assembly and a new official gene set for Tribolium castaneum

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Herndon, Nicolae, Shelton, Jennifer, Gerischer, Lizzy, Ioannidis, Panos, Ninova, Maria, Dönitz, Jürgen, Waterhouse, Robert M, Liang, Chun, Damm, Carsten, Siemanowski, Janna et al.
(2020) Enhanced genome assembly and a new official gene set for Tribolium castaneum. BMC Genomics, 21 (1). p. 47. doi:10.1186/s12864-019-6394-6

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Official URL: https://doi.org/10.1186/s12864-019-6394-6

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Abstract

The red flour beetle Tribolium castaneum has emerged as an important model organism for the study of gene function in development and physiology, for ecological and evolutionary genomics, for pest control and a plethora of other topics. RNA interference (RNAi), transgenesis and genome editing are well established and the resources for genome-wide RNAi screening have become available in this model. All these techniques depend on a high quality genome assembly and precise gene models. However, the first version of the genome assembly was generated by Sanger sequencing, and with a small set of RNA sequence data limiting annotation quality. Here, we present an improved genome assembly (Tcas5.2) and an enhanced genome annotation resulting in a new official gene set (OGS3) for Tribolium castaneum, which significantly increase the quality of the genomic resources. By adding large-distance jumping library DNA sequencing to join scaffolds and fill small gaps, the gaps in the genome assembly were reduced and the N50 increased to 4753kbp. The precision of the gene models was enhanced by the use of a large body of RNA-Seq reads of different life history stages and tissue types, leading to the discovery of 1452 novel gene sequences. We also added new features such as alternative splicing, well defined UTRs and microRNA target predictions. For quality control, 399 gene models were evaluated by manual inspection. The current gene set was submitted to Genbank and accepted as a RefSeq genome by NCBI. The new genome assembly (Tcas5.2) and the official gene set (OGS3) provide enhanced genomic resources for genetic work in Tribolium castaneum. The much improved information on transcription start sites supports transgenic and gene editing approaches. Further, novel types of information such as splice variants and microRNA target genes open additional possibilities for analysis.

Item Type: Journal Article
Subjects: Q Science > QH Natural history
Q Science > QL Zoology
Divisions: Faculty of Science > Life Sciences (2010- )
SWORD Depositor: Library Publications Router
Library of Congress Subject Headings (LCSH): Red flour beetle -- Functional genomics, RNA interference, Gene editing, Genomics, MicroRNA
Journal or Publication Title: BMC Genomics
Publisher: BioMed Central Ltd.
ISSN: 1471-2164
Official Date: 14 January 2020
Dates:
DateEvent
14 January 2020Published
12 December 2019Accepted
Volume: 21
Number: 1
Page Range: p. 47
DOI: 10.1186/s12864-019-6394-6
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
UNSPECIFIEDMax-Planck-Gesellschafthttp://dx.doi.org/10.13039/501100004189
P20 GM103418National Institute of General Medical Scienceshttp://dx.doi.org/10.13039/100000057
P20 GM103418National Institutes of Healthhttp://dx.doi.org/10.13039/100000002
FOR1234[DFG] Deutsche Forschungsgemeinschafthttp://dx.doi.org/10.13039/501100001659
BU1443/6[DFG] Deutsche Forschungsgemeinschafthttp://dx.doi.org/10.13039/501100001659
BU1443/7[DFG] Deutsche Forschungsgemeinschafthttp://dx.doi.org/10.13039/501100001659
BU1443/8[DFG] Deutsche Forschungsgemeinschafthttp://dx.doi.org/10.13039/501100001659
STA 1009/10[DFG] Deutsche Forschungsgemeinschafthttp://dx.doi.org/10.13039/501100001659
KL 656/ 7[DFG] Deutsche Forschungsgemeinschafthttp://dx.doi.org/10.13039/501100001659
Scho1058/4[DFG] Deutsche Forschungsgemeinschafthttp://dx.doi.org/10.13039/501100001659
WI1797/5[DFG] Deutsche Forschungsgemeinschafthttp://dx.doi.org/10.13039/501100001659
BIF PhD fellowship Boehringer Ingelheim Fondshttp://dx.doi.org/10.13039/501100001645
SFB680[DFG] Deutsche Forschungsgemeinschafthttp://dx.doi.org/10.13039/501100001659
PA 2044/1–1[DFG] Deutsche Forschungsgemeinschafthttp://dx.doi.org/10.13039/501100001659
SFB 680 Project A12 to KAP[DFG] Deutsche Forschungsgemeinschafthttp://dx.doi.org/10.13039/501100001659
PP00P3_170664[SNSF] Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschunghttp://dx.doi.org/10.13039/501100001711

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