Genome-Wide Association Study (GWAS) identified novel candidate loci affecting wood formation in Norway spruceShow others and affiliations
2019 (English)In: The Plant Journal, ISSN 0960-7412, E-ISSN 1365-313X, Vol. 100, no 1, p. 83-100Article in journal (Refereed) Published
Abstract [en]
Norway spruce is a boreal forest tree species of significant ecological and economic importance. Hence there is a strong imperative to dissect the genetics underlying important wood quality traits in the species. We performed a functional Genome-Wide Association Study (GWAS) of 17 wood traits in Norway spruce using 178101 single-nucleotide polymorphisms (SNPs) generated from exome genotyping of 517 mother trees. The wood traits were defined using functional modelling of wood properties across annual growth rings.We applied a LASSO based association mapping method using a functional multi-locus mapping approach that utilizes latent traits, with a stability selection probability method as the hypothesis testing approach to determine significant Quantitative Trait Loci (QTLs). The analysis provided 52 significant SNPs from 39 candidate genes, including genes previously implicated in wood formation and tree growth in spruce and other species. Our study represents a multi-locus GWAS for complex wood traits in Norway spruce. The results advance our understanding of the genetics influencing wood traits and identifies candidate genes for future functional studies.
Place, publisher, year, edition, pages
2019. Vol. 100, no 1, p. 83-100
Keywords [en]
Candidate genes, Functional trait mapping, Genome-wide association mapping, Norway spruce, Sequence capture, Single nucleotide polymorphisms
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-39067DOI: 10.1111/tpj.14429PubMedID: 31166032Scopus ID: 2-s2.0-85072848905OAI: oai:DiVA.org:ri-39067DiVA, id: diva2:1331026
2019-06-262019-06-262024-01-29Bibliographically approved