Genomic signatures of vegetable and oilseed allopolyploid Brassica juncea and genetic loci controlling the accumulation of glucosinolates

文献类型： 外文期刊

第一作者： Yang, Jinghua

作者： Yang, Jinghua;Li, Zhangping;Zhang, Lili;Sha, Tongyun;Lyu, Xiaolong;Hu, Zhongyuan;Zhang, Mingfang;Yang, Jinghua;Li, Zhangping;Zhang, Mingfang;Yang, Jinghua;Zhang, Mingfang;Wang, Jing;Li, Xuming;He, Zhesi;Bancroft, Ian;Chen, Sheng;Chen, Sheng;Gu, Yuanguo;Li, Zaiyun;He, Hongju

作者机构：

关键词： Brassica juncea; allopolyploid; structural variations; copy number variation; glucosinolates

期刊名称：PLANT BIOTECHNOLOGY JOURNAL （ 影响因子：9.803； 五年影响因子：9.555 ）

ISSN： 1467-7644

年卷期： 2021 年 19 卷 12 期

页码：

收录情况： SCI

摘要： Allopolyploid Brassica juncea crops in Brassicaceae are becoming increasingly revitalized as vegetables and oilseeds owing to wide adaptability and significant economic values. However, the genomic differentiation of diversified vegetables and oilseed B. juncea and the genetic basis underlying glucosinolates accumulation have yet to be elucidated. To address this knowledge gap, we report the sequencing of pairwise genomes of vegetable and oilseed B. juncea at chromosome scale. Comparative genomics analysis unveils panoramic structural variation footprints, particularly the genetic loci of HSP20 and TGA1 associated with abiotic and biotic stresses responses between oilseed and vegetable subgroups. We anchored two major loci of MYB28 (HAG1) orthologues caused by copy number variations on A02 and A09 chromosomes using scored genomic SNPs-based GWAS that are responsible for seed oil quality-determining glucosinolates biosynthesis. These findings will provide valuable repertories of polyploidy genomic information enabling polyploidy genome evolution studies and precise genomic selections for crucial traits like functional components of glucosinolates in B. juncea crops and beyond.

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