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An Ultra-Dense Haploid Genetic Map for Evaluating the Highly Fragmented Genome Assembly of Norway Spruce (Picea abies)
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och geovetenskap. Umeå Plant Science Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Science, Umeå, Sweden; Department of Plant Biology, Uppsala BioCenter, Swedish University of Agricultural Science, Uppsala, Sweden.
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och geovetenskap. Department of Population Genetics, Center of Life and Food Sciences Weihenstephan, Technische Universität München.ORCID-id: 0000-0002-7111-9530
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och geovetenskap. Department of Plant Biology, Uppsala BioCenter, Swedish University of Agricultural Science, Uppsala, Sweden.
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för ekologi, miljö och geovetenskap. Uppsala Multidisciplinary Center for Advanced Computational Science; Department of Ecology and Genetics: Evolutionary Biology, Uppsala University, Uppsala, Sweden.ORCID-id: 0000-0001-5235-6461
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2019 (Engelska)Ingår i: G3: Genes, Genomes, Genetics, ISSN 2160-1836, E-ISSN 2160-1836, Vol. 9, nr 5, s. 1623-1632Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Norway spruce (Picea abies (L.) Karst.) is a conifer species of substanital economic and ecological importance. In common with most conifers, the P. abies genome is very large (similar to 20 Gbp) and contains a high fraction of repetitive DNA. The current P. abies genome assembly (v1.0) covers approximately 60% of the total genome size but is highly fragmented, consisting of >10 million scaffolds. The genome annotation contains 66,632 gene models that are at least partially validated (), however, the fragmented nature of the assembly means that there is currently little information available on how these genes are physically distributed over the 12 P. abies chromosomes. By creating an ultra-dense genetic linkage map, we anchored and ordered scaffolds into linkage groups, which complements the fine-scale information available in assembly contigs. Our ultra-dense haploid consensus genetic map consists of 21,056 markers derived from 14,336 scaffolds that contain 17,079 gene models (25.6% of the validated gene models) that we have anchored to the 12 linkage groups. We used data from three independent component maps, as well as comparisons with previously published Picea maps to evaluate the accuracy and marker ordering of the linkage groups. We demonstrate that approximately 3.8% of the anchored scaffolds and 1.6% of the gene models covered by the consensus map have likely assembly errors as they contain genetic markers that map to different regions within or between linkage groups. We further evaluate the utility of the genetic map for the conifer research community by using an independent data set of unrelated individuals to assess genome-wide variation in genetic diversity using the genomic regions anchored to linkage groups. The results show that our map is sufficiently dense to enable detailed evolutionary analyses across the P. abies genome.

Ort, förlag, år, upplaga, sidor
Genetics Society of America , 2019. Vol. 9, nr 5, s. 1623-1632
Nyckelord [en]
genetic map, Norway spruce, Picea abies, sequence capture, genome assembly
Nationell ämneskategori
Genetik
Identifikatorer
URN: urn:nbn:se:umu:diva-159871DOI: 10.1534/g3.118.200840ISI: 000467271400031PubMedID: 30898899OAI: oai:DiVA.org:umu-159871DiVA, id: diva2:1322040
Projekt
Bio4Energy
Forskningsfinansiär
Knut och Alice Wallenbergs StiftelseTillgänglig från: 2019-06-10 Skapad: 2019-06-10 Senast uppdaterad: 2019-09-06Bibliografiskt granskad

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Bernhardsson, CarolinaVidalis, AmaryllisWang, XiScofield, DouglasSchiffthaler, BastianStreet, NathanielIngvarsson, Pär K.

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Bernhardsson, CarolinaVidalis, AmaryllisWang, XiScofield, DouglasSchiffthaler, BastianStreet, NathanielIngvarsson, Pär K.
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Institutionen för ekologi, miljö och geovetenskapUmeå Plant Science Centre (UPSC)Institutionen för fysiologisk botanik
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