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园艺学报 ›› 2022, Vol. 49 ›› Issue (2): 332-340.doi: 10.16420/j.issn.0513-353x.2021-0056

• 研究论文 • 上一篇    下一篇

菜豆花色全基因组关联分析

卢甜甜, 刘志远, 徐兆生, 张合龙, 李国亮, 折红兵, 钱伟()   

  1. 中国农业科学院蔬菜花卉研究所,北京 100081
  • 收稿日期:2021-04-16 修回日期:2021-11-18 出版日期:2022-02-25 发布日期:2022-02-28
  • 基金资助:
    中国农业科学院科技创新工程项目(CAAS-ASTIP-IVFCAAS);国家重点研发计划项目(2018YFD0100805);农业农村部园艺作物生物学与种质创制重点实验室项目

Genome-wide Association Studies for Flower Color in Common Bean

LU Tiantian, LIU Zhiyuan, XU Zhaosheng, ZHANG Helong, LI Guoliang, SHE Hongbing, QIAN Wei()   

  1. Institute of Vegetables and Flowers,Chinese Academy of Agricultural Sciences,Beijing 100081,China
  • Received:2021-04-16 Revised:2021-11-18 Online:2022-02-25 Published:2022-02-28

摘要:

以124份菜豆为试验材料,分别在2019年和2020年调查花色表型,利用全基因组关联分析(GWAS)的方法对调控花色的基因进行挖掘。结果表明:2年间供试菜豆花色表型基本一致,仅有1份材料存在差异。对124份菜豆材料进行重测序共获得517.58 Gb的数据量(10×),通过与菜豆参考基因组比对,获得5 130 030个SNP,过滤后得到3 701 584个SNP。利用这些高质量的SNP基于压缩混合线性模型(compress mixed linear model,cMLM)将菜豆花色调控基因定位在6号染色体322.67 kb的区域内;在候选区域内共鉴定到8个基因,其中,Phvul.006G020200为参与花青素调控的MYB转录因子基因,且在不同花色材料中差异性表达,为调控菜豆花色的关键候选基因。

关键词: 菜豆, 全基因组关联分析, 花色, 表达

Abstract:

Flower color of 124 common beans investigated in 2019 and 2020 was used to identify its controlling genes by Genome-wide association study(GWAS). The phenotypic data showed that the flower color between the two years had a relatively high similarity besides one individual. We obtained 517.58 Gb(~10×)of raw data by resequencing 124 common bean individuals. A total of 5 130 030 SNP were generated against the common bean reference genome,and 3 701 584 SNP were retained by filtering. GWAS analysis based on these high-quality SNPs with compress mixed linear model(cMLM)located flower color regulatory gene in the 322.67 kb region on chromosome 6. Within the region,eight genes were annotated based on the common bean reference genome. Particularly,Phvul.006G020200 was the MYB transcription factor of anthocyanin regulation and had differential expression in flower color. Thus,we assume that Phvul.006G020200 is a key candidate gene for regulating bean flower color.

Key words: common bean, GWAS, flower color, expressions

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