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A chromosomal-level genome assembly for the insect vector for Chagas disease, Triatoma rubrofasciata.


ABSTRACT: BACKGROUND:Triatoma rubrofasciata is a widespread pathogen vector for Chagas disease, an illness that affects approximately 7 million people worldwide. Despite its importance to human health, its evolutionary origin has not been conclusively determined. A reference genome for T. rubrofasciata is not yet available. FINDING:We have sequenced the genome of a female individual with T. rubrofasciatausing a single molecular DNA sequencing technology (i.e., PacBio Sequel platform) and have successfully reconstructed a whole-genome (680-Mb) assembly that covers 90% of the nuclear genome (757 Mb). Through Hi-C analysis, we have reconstructed full-length chromosomes of this female individual that has 13 unique chromosomes (2n = 24 = 22 + X1 + X2) with a contig N50 of 2.72 Mb and a scaffold N50 of 50.7 Mb. This genome has achieved a high base-level accuracy of 99.99%. This platinum-grade genome assembly has 12,691 annotated protein-coding genes. More than 95.1% of BUSCO genes were single-copy completed, indicating a high level of completeness of the genome. CONCLUSION:The platinum-grade genome assembly and its annotation provide valuable information for future in-depth comparative genomics studies, including sexual determination analysis in T. rubrofasciata and the pathogenesis of Chagas disease.

SUBMITTER: Liu Q 

PROVIDER: S-EPMC6699579 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature

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A chromosomal-level genome assembly for the insect vector for Chagas disease, Triatoma rubrofasciata.

Liu Qin Q   Guo Yunhai Y   Zhang Yi Y   Hu Wei W   Li Yuanyuan Y   Zhu Dan D   Zhou Zhengbin Z   Wu Jiatong J   Chen Nansheng N   Zhou Xiao-Nong XN  

GigaScience 20190801 8


<h4>Background</h4>Triatoma rubrofasciata is a widespread pathogen vector for Chagas disease, an illness that affects approximately 7 million people worldwide. Despite its importance to human health, its evolutionary origin has not been conclusively determined. A reference genome for T. rubrofasciata is not yet available.<h4>Finding</h4>We have sequenced the genome of a female individual with T. rubrofasciatausing a single molecular DNA sequencing technology (i.e., PacBio Sequel platform) and ha  ...[more]

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