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Nat Commun. 2018 Apr 27;9(1):1702. doi: 10.1038/s41467-018-04093-z.

The genetic architecture of floral traits in the woody plant Prunus mume.

Zhang Q1,2, Zhang H3,4, Sun L5, Fan G3,4,6, Ye M7, Jiang L7, Liu X3,4, Ma K5, Shi C3, Bao F5, Guan R3, Han Y5, Fu Y3, Pan H5, Chen Z3, Li L3, Wang J5, Lv M3, Zheng T5, Yuan C5, Zhou Y5, Lee SM6, Yan X8, Xu X3,4, Wu R9, Chen W10,11, Cheng T12.

Author information

1
Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, School of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China. zqx@bjfu.edu.cn.
2
Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, 100083, China. zqx@bjfu.edu.cn.
3
BGI-Qingdao, BGI-Shenzhen, Qingdao, 266555, China.
4
BGI-Shenzhen, Shenzhen, 518083, China.
5
Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, School of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China.
6
State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau, 999078, China.
7
Center for Computational Biology & Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, 100083, China.
8
Mei Research Center of China, Wuhan, 430074, China.
9
Center for Statistical Genetics, Departments of Public Health Sciences and Statistics, The Pennsylvania State University, Hershey, PA, 17033, USA. rwu@phs.psu.edu.
10
BGI-Qingdao, BGI-Shenzhen, Qingdao, 266555, China. chenwenbin@genomics.cn.
11
BGI-Shenzhen, Shenzhen, 518083, China. chenwenbin@genomics.cn.
12
Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding, National Engineering Research Center for Floriculture, Beijing Laboratory of Urban and Rural Ecological Environment, School of Landscape Architecture, Beijing Forestry University, Beijing, 100083, China. chengtangren@163.com.

Abstract

Mei (Prunus mume) is an ornamental woody plant that has been domesticated in East Asia for thousands of years. High diversity in floral traits, along with its recent genome sequence, makes mei an ideal model system for studying the evolution of woody plants. Here, we investigate the genetic architecture of floral traits in mei and its domestication history by sampling and resequencing a total of 351 samples including 348 mei accessions and three other Prunus species at an average sequencing depth of 19.3×. Highly-admixed population structure and introgression from Prunus species are identified in mei accessions. Through a genome-wide association study (GWAS), we identify significant quantitative traits locus (QTLs) and genomic regions where several genes, such as MYB108, are positively associated with petal color, stigma color, calyx color, and bud color. Results from this study shed light on the genetic basis of domestication in flowering plants, particularly woody plants.

PMID:
29703940
PMCID:
PMC5923208
DOI:
10.1038/s41467-018-04093-z
[Indexed for MEDLINE]
Free PMC Article

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