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Genetic variants associated with the root system architecture of oilseed rape (Brassica napus L.) under contrasting phosphate supply

Wang, Xiaohua; Chen, Yanling; Thomas, Catherine L.; Ding, Guangda; Xu, Ping; Shi, Dexu; Grandke, Fabian; Jin, Kemo; Cai, Hongmei; Xu, Fangsen; Yi, Bin; Broadley, Martin R.; Shi, Lei

Authors

Xiaohua Wang

Yanling Chen

Catherine L. Thomas

Guangda Ding

Ping Xu

Dexu Shi

Fabian Grandke

Kemo Jin

Hongmei Cai

Fangsen Xu

Bin Yi

Lei Shi



Abstract

Breeding crops with ideal root system architecture for efficient absorption of phosphorus is an important strategy to reduce the use of phosphate fertilizers. To investigate genetic variants leading to changes in root system architecture, 405 oilseed rape cultivars were genotyped with a 60K Brassica Infinium SNP array in low and high P environments. A total of 285 single-nucleotide polymorphisms were associated with root system architecture traits at varying phosphorus levels. Nine single-nucleotide polymorphisms corroborate a previous linkage analysis of root system architecture quantitative trait loci in the BnaTNDH population. One peak single-nucleotide polymorphism region on A3 was associated with all root system architecture traits and co-localized with a quantitative trait locus for primary root length at low phosphorus. Two more single-nucleotide polymorphism peaks on A5 for root dry weight at low phosphorus were detected in both growth systems and co-localized with a quantitative trait locus for the same trait. The candidate genes identified on A3 form a haplotype ‘BnA3Hap’, that will be important for understanding the phosphorus/root system interaction and for the incorporation into Brassica napus breeding programs.

Citation

Wang, X., Chen, Y., Thomas, C. L., Ding, G., Xu, P., Shi, D., …Shi, L. (2017). Genetic variants associated with the root system architecture of oilseed rape (Brassica napus L.) under contrasting phosphate supply. DNA Research, 24(4), 407-417. https://doi.org/10.1093/dnares/dsx013

Journal Article Type Article
Acceptance Date Mar 16, 2017
Online Publication Date Apr 19, 2017
Publication Date Aug 1, 2017
Deposit Date Jun 26, 2017
Publicly Available Date Jun 26, 2017
Journal DNA Research
Print ISSN 1340-2838
Electronic ISSN 1756-1663
Publisher Oxford University Press
Peer Reviewed Peer Reviewed
Volume 24
Issue 4
Pages 407-417
DOI https://doi.org/10.1093/dnares/dsx013
Keywords oilseed rape, root system architecture, single-nucleotide polymorphism, genome-wide association study, BnA3Hap
Public URL http://eprints.nottingham.ac.uk/id/eprint/43766
Publisher URL https://academic.oup.com/dnaresearch/article-lookup/doi/10.1093/dnares/dsx013
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc/4.0





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