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Genome-wide association studies provide insights into the genetic determination of fruit traits of pear

文献类型： 外文期刊

作者： Zhang, Ming-Yue 1 ; Xue, Cheng 1 ; Hu, Hongju 3 ; Li, Jiaming 1 ; Xue, Yongsong 1 ; Wang, Runze 1 ; Fan, Jing 3 ; Zou, Ch 1 ;

作者机构： 1.Nanjing Agr Univ, Ctr Pear Engn Technol Res, State Key Lab Crop Genet & Germplasm Enhancement, Nanjing, Jiangsu, Peoples R China

2.Fujian Agr & Forestry Univ, Haixia Inst Sci & Technol, Fuzhou, Peoples R China

3.Hubei Acad Agr Sci, Wuchang Sand Pear Germplasm, Wuhan, Hubei, Peoples R China

4.Chinese Acad Agr Sci, Inst Crop Sci, Beijing, Peoples R China

5.Cornell Univ, Boyce Thompson Inst, Ithaca, NY 14853 USA

6.USDA ARS, Robert W Holley Ctr Agr & Hlth, Ithaca, NY 22313 USA

期刊名称：NATURE COMMUNICATIONS （ 影响因子：14.919； 五年影响因子：15.805 ）

ISSN： 2041-1723

年卷期： 2021 年 12 卷 1 期

页码：

收录情况： SCI

摘要： Pear is a major fruit tree crop distributed worldwide, yet its breeding is a very time-consuming process. To facilitate molecular breeding and gene identification, here we have performed genome-wide association studies (GWAS) on eleven fruit traits. We identify 37 loci associated with eight fruit quality traits and five loci associated with three fruit phenological traits. Scans for selective sweeps indicate that traits including fruit stone cell content, organic acid and sugar contents might have been under continuous selection during breeding improvement. One candidate gene, PbrSTONE, identified in GWAS, has been functionally verified to be involved in the regulation of stone cell formation, one of the most important fruit quality traits in pear. Our study provides insights into the complex fruit related biology and identifies genes controlling important traits in pear through GWAS, which extends the genetic resources and basis for facilitating molecular breeding in perennial trees.

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