Details

Autor(en) / Beteiligte

• Baison, John
• Vidalis, Amaryllis
• Zhou, Linghua
• Chen, Zhi‐Qiang
• Li, Zitong
• Sillanpää, Mikko J.
• Bernhardsson, Carolina
• Scofield, Douglas
• Forsberg, Nils
• Grahn, Thomas
• Olsson, Lars
• Karlsson, Bo
• Wu, Harry
• Ingvarsson, Pär K.
• Lundqvist, Sven‐Olof
• Niittylä, Totte
• García‐Gil, M Rosario

Titel

Genome‐wide association study identified novel candidate loci affecting wood formation in Norway spruce

Ist Teil von

• The Plant journal : for cell and molecular biology, 2019-10, Vol.100 (1), p.83-100

Ort / Verlag

England: Blackwell Publishing Ltd

Erscheinungsjahr

2019

Link zum Volltext

Quelle

Wiley Online Library

Beschreibungen/Notizen

• Summary 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 178 101 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 Least Absolute Shrinkage and Selection Operator (LASSO‐based) association mapping method using a functional multilocus mapping approach that utilizes latent traits, with a stability selection probability method as the hypothesis testing approach to determine a significant quantitative trait locus. 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 multilocus 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. Significance Statement Wood provides both structural support and a transport route for water and solutes in trees. Our work provides a framework to dissect the genetic nature of wood formation and adds to our understanding of tree growth and development. With the current research focus on wood cell wall biosynthesis in general, and lignocellulose feedstock for biorefineries, we believe that this contribution will be of wide interest for the plant science community.