Genome-wide association mapping for wood characteristics in Populus identifies an array of candidate single nucleotide polymorphisms

Bibliographische Detailangaben
Veröffentlicht in:	The New phytologist. - 1979. - 200(2013), 3 vom: 27. Nov., Seite 710-726
1. Verfasser:	Porth, Ilga (VerfasserIn)
Weitere Verfasser:	Klapšte, Jaroslav, Skyba, Oleksandr, Hannemann, Jan, McKown, Athena D, Guy, Robert D, DiFazio, Stephen P, Muchero, Wellington, Ranjan, Priya, Tuskan, Gerald A, Friedmann, Michael C, Ehlting, Juergen, Cronk, Quentin C B, El-Kassaby, Yousry A, Douglas, Carl J, Mansfield, Shawn D
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2013
Zugriff auf das übergeordnete Werk:	The New phytologist
Schlagworte:	Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Populus association genetics cellulose lignin single nucleotide polymorphism (SNP) wood traits wood ultrastructure

Beschreibung
Zusammenfassung:	© 2013 The Authors. New Phytologist © 2013 New Phytologist Trust. Establishing links between phenotypes and molecular variants is of central importance to accelerate genetic improvement of economically important plant species. Our work represents the first genome-wide association study to the inherently complex and currently poorly understood genetic architecture of industrially relevant wood traits. Here, we employed an Illumina Infinium 34K single nucleotide polymorphism (SNP) genotyping array that generated 29,233 high-quality SNPs in c. 3500 broad-based candidate genes within a population of 334 unrelated Populus trichocarpa individuals to establish genome-wide associations. The analysis revealed 141 significant SNPs (α ≤ 0.05) associated with 16 wood chemistry/ultrastructure traits, individually explaining 3-7% of the phenotypic variance. A large set of associations (41% of all hits) occurred in candidate genes preselected for their suggested a priori involvement with secondary growth. For example, an allelic variant in the FRA8 ortholog explained 21% of the total genetic variance in fiber length, when the trait's heritability estimate was considered. The remaining associations identified SNPs in genes not previously implicated in wood or secondary wall formation. Our findings provide unique insights into wood trait architecture and support efforts for population improvement based on desirable allelic variants
Beschreibung:	Date Completed 29.04.2014 Date Revised 08.04.2022 published: Print-Electronic Citation Status MEDLINE
ISSN:	1469-8137
DOI:	10.1111/nph.12422