High-density genetic map construction and identification of a locus controlling weeping trait in an ornamental woody plant (Prunus mume Sieb. et Zucc)

DNA Research : an International Journal for Rapid Publication of Reports on Genes and Genomes
Jie ZhangEnze Liu

Abstract

High-density genetic map is a valuable tool for fine mapping locus controlling a specific trait especially for perennial woody plants. In this study, we firstly constructed a high-density genetic map of mei (Prunus mume) using SLAF markers, developed by specific locus amplified fragment sequencing (SLAF-seq). The linkage map contains 8,007 markers, with a mean marker distance of 0.195 cM, making it the densest genetic map for the genus Prunus. Though weeping trees are used worldwide as landscape plants, little is known about weeping controlling gene(s) (Pl). To test the utility of the high-density genetic map, we did fine-scale mapping of this important ornamental trait. In total, three statistic methods were performed progressively based on the result of inheritance analysis. Quantitative trait loci (QTL) analysis initially revealed that a locus on linkage group 7 was strongly responsible for weeping trait. Mutmap-like strategy and extreme linkage analysis were then applied to fine map this locus within 1.14 cM. Bioinformatics analysis of the locus identified some candidate genes. The successful localization of weeping trait strongly indicates that the high-density map constructed using SLAF markers is a worthy reference for m...Continue Reading

References

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Citations

Jan 19, 2018·International Journal of Molecular Sciences·Ayaz Ali KeerioZhongxu Lin
Jun 24, 2017·Horticulture Research·Jian ZhangRongling Wu
Oct 7, 2017·DNA Research : an International Journal for Rapid Publication of Reports on Genes and Genomes·Zhongyuan HuMingfang Zhang
May 2, 2018·Proceedings of the National Academy of Sciences of the United States of America·Courtney A HollenderChris Dardick

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Datasets Mentioned

BETA
PRJNA273338

Methods Mentioned

BETA
genotyping
electrophoresis
the

Software Mentioned

R
Mutmap
SOAP
QTL
HighMap
SMOOTH
BLASTX

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