UGbS-Flex, a novel bioinformatics pipeline for imputation-free SNP discovery in polyploids without a reference genome: finger millet as a case study

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Publikašuvnnas:BMC Plant Biology vol. 18 (2018), p. n/a
Váldodahkki: Peng Qi
Eará dahkkit: Davis Gimode, Saha, Dipnarayan, Schröder, Stephan, Chakraborty, Debkanta, Wang, Xuewen, Dida, Mathews M, Malmberg, Russell L, Devos, Katrien M
Almmustuhtton:
Springer Nature B.V.
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Liŋkkat:Citation/Abstract
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022 |a 1471-2229 
024 7 |a 10.1186/s12870-018-1316-3  |2 doi 
035 |a 2057009722 
045 2 |b d20180101  |b d20181231 
084 |a 58484  |2 nlm 
100 1 |a Peng Qi 
245 1 |a UGbS-Flex, a novel bioinformatics pipeline for imputation-free SNP discovery in polyploids without a reference genome: finger millet as a case study 
260 |b Springer Nature B.V.  |c 2018 
513 |a Case Study Journal Article 
520 3 |a Background Research on orphan crops is often hindered by a lack of genomic resources. With the advent of affordable sequencing technologies, genotyping an entire genome or, for large-genome species, a representative fraction of the genome has become feasible for any crop. Nevertheless, most genotyping-by-sequencing (GBS) methods are geared towards obtaining large numbers of markers at low sequence depth, which excludes their application in heterozygous individuals. Furthermore, bioinformatics pipelines often lack the flexibility to deal with paired-end reads or to be applied in polyploid species. Results UGbS-Flex combines publicly available software with in-house python and perl scripts to efficiently call SNPs from genotyping-by-sequencing reads irrespective of the species’ ploidy level, breeding system and availability of a reference genome. Noteworthy features of the UGbS-Flex pipeline are an ability to use paired-end reads as input, an effective approach to cluster reads across samples with enhanced outputs, and maximization of SNP calling. We demonstrate use of the pipeline for the identification of several thousand high-confidence SNPs with high representation across samples in an F3-derived F2 population in the allotetraploid finger millet. Robust high-density genetic maps were constructed using the time-tested mapping program MAPMAKER which we upgraded to run efficiently and in a semi-automated manner in a Windows Command Prompt Environment. We exploited comparative GBS with one of the diploid ancestors of finger millet to assign linkage groups to subgenomes and demonstrate the presence of chromosomal rearrangements. Conclusions The paper combines GBS protocol modifications, a novel flexible GBS analysis pipeline, UGbS-Flex, recommendations to maximize SNP identification, updated genetic mapping software, and the first high-density maps of finger millet. The modules used in the UGbS-Flex pipeline and for genetic mapping were applied to finger millet, an allotetraploid selfing species without a reference genome, as a case study. The UGbS-Flex modules, which can be run independently, are easily transferable to species with other breeding systems or ploidy levels. 
653 |a Software 
653 |a Eleusine coracana 
653 |a Environmental 
653 |a Datasets 
653 |a Bioinformatics 
653 |a Upgrading 
653 |a Ploidy 
653 |a Gene mapping 
653 |a Mapping 
653 |a Polyploidy 
653 |a Genomes 
653 |a Modules 
653 |a Genomics 
653 |a Maps 
653 |a Density 
653 |a Genotyping 
653 |a Computer programs 
653 |a Case studies 
653 |a Chromosome rearrangements 
653 |a Gene sequencing 
653 |a Programming languages 
653 |a Deoxyribonucleic acid--DNA 
653 |a Single-nucleotide polymorphism 
653 |a Millet 
653 |a Perl 
653 |a Breeding 
700 1 |a Davis Gimode 
700 1 |a Saha, Dipnarayan 
700 1 |a Schröder, Stephan 
700 1 |a Chakraborty, Debkanta 
700 1 |a Wang, Xuewen 
700 1 |a Dida, Mathews M 
700 1 |a Malmberg, Russell L 
700 1 |a Devos, Katrien M 
773 0 |t BMC Plant Biology  |g vol. 18 (2018), p. n/a 
786 0 |d ProQuest  |t Health & Medical Collection 
856 4 1 |3 Citation/Abstract  |u https://www.proquest.com/docview/2057009722/abstract/embedded/L8HZQI7Z43R0LA5T?source=fedsrch 
856 4 0 |3 Full Text  |u https://www.proquest.com/docview/2057009722/fulltext/embedded/L8HZQI7Z43R0LA5T?source=fedsrch 
856 4 0 |3 Full Text - PDF  |u https://www.proquest.com/docview/2057009722/fulltextPDF/embedded/L8HZQI7Z43R0LA5T?source=fedsrch