生物
芸苔属
数量性状位点
油菜籽
MYB公司
特质
遗传学
类黄酮生物合成
等位基因
基因
植物
转录组
转录因子
基因表达
计算机科学
程序设计语言
作者
Cunmin Qu,Meichen Zhu,Ran Hu,Yongchao Niu,Si Chen,Huiyan Zhao,Chengxiang Li,Zhen Wang,Nengwen Yin,Fujun Sun,Zhiyou Chen,Shulin Shen,Guoxia Shang,Yan Zhou,Xingying Yan,Lijuan Wei,Liezhao Liu,Bin Yi,Jinmin Lian,Jiang Li
标识
DOI:10.1038/s41467-023-40838-1
摘要
Yellow-seed trait is a desirable breeding characteristic of rapeseed (Brassica napus) that could greatly improve seed oil yield and quality. However, the underlying mechanisms controlling this phenotype in B. napus plants are difficult to discern because of their complexity. Here, we assemble high-quality genomes of yellow-seeded (GH06) and black-seeded (ZY821). Combining in-depth fine mapping of a quantitative trait locus (QTL) for seed color with other omics data reveal BnA09MYB47a, encoding an R2R3-MYB-type transcription factor, as the causal gene of a major QTL controlling the yellow-seed trait. Functional studies show that sequence variation of BnA09MYB47a underlies the functional divergence between the yellow- and black-seeded B. napus. The black-seed allele BnA09MYB47aZY821, but not the yellow-seed allele BnA09MYB47aGH06, promotes flavonoid biosynthesis by directly activating the expression of BnTT18. Our discovery suggests a possible approach to breeding B. napus for improved commercial value and facilitates flavonoid biosynthesis studies in Brassica crops.
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