数字农科院2.0

Targeted mutations of BnPAP2 lead to a yellow seed coat in Brassica napus L.

文献类型： 外文期刊

作者： Wei Huang;Ruyu Jiao;Hongtao Cheng;Shengli Cai;Jia Liu;Qiong Hu;Lili Liu;Bao Li;Tonghua Wang;Mei Li;Dawei Zhang;Mingli Yan

作者机构：

关键词： BnPAP2;CRISPR/Cas9;proanthocyanidins;yellow seed

期刊名称： Journal of Integrative Agriculture

ISSN： 2095-3119

年卷期： 2024 年 23 卷 2 期

页码：

收录情况： SCIE（2024版） ; ; CSCD（2023-2024年度） ; ; 科技核心（2024版） ; ; 农林核心（2020版）

摘要： The yellow seed trait is preferred by breeders for its potential to improve the seed quality and commercial value of Brassica napus. In the present study, we produced yellow seed mutants using a CRISPR/Cas9 system when the two BnPAP2 homologs were knocked out. Histochemical staining of the seed coat demonstrated that proanthocyanidin accumulation was significantly reduced in the pap2 double mutants and decreased specifically in the endothelial and palisade layer cells of the seed coat. Transcriptomic and metabolite profiling analysis suggested that disruption of the BnPAP2 genes could reduce the expression of structural and regulated genes in the phenylpropanoid and flavonoid biosynthetic pathways. The broad suppression of these genes might hinder proanthocyanidin accumulation during seed development, and thereby causing the yellow seed trait in B. napus. These results indicate that BnPAP2 might play a vital role in the regulatory network controlling proanthocyanidin accumulation.

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