Combined Multi-Omics and Co-Expression Network Analyses Uncover the Pigment Accumulation Mechanism of Orange-Red Petals in Brassica napus L.
文献类型： 外文期刊
作者： Jia, Ledong 1 ; Li, Shengting 1 ; Zhang, Chao 3 ; Zeng, Lijun 1 ; Shen, Shulin 1 ; Yin, Nengwen 1 ; Zhao, Huiyan 1 ; Tang, Zhanglin 1 ; Qu, Cunmin 1 ; Li, Jiana 1 ; Chen, Zhiyou 1 ;
作者机构： 1.Southwest Univ, Coll Agron & Biotechnol, Integrat Sci Ctr Germplasm Creat Western China CHO, Chongqing 400715, Peoples R China
2.Southwest Univ, Coll Agron & Biotechnol, Chongqing 400715, Peoples R China
3.Guizhou Acad Agr Sci, Guizhou Rapeseed Res Inst, Guiyang 550006, Guizhou, Peoples R China
4.Southwest Univ Beibei, Acad Agr Sci, Chongqing Engn Res Ctr Rapeseed, Chongqing 400715, Peoples R China
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期刊名称：BIOLOGY-BASEL （ 影响因子：3.5； 五年影响因子：4.0 ）
ISSN：
年卷期： 2025 年 14 卷 6 期
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收录情况： SCI
摘要： Rapeseed (Brassica napus L.) has been cultivated as an ornamental plant in recent years. However, the metabolic and regulatory processes involved in pigment accumulation in. B. napus flowers are poorly understood. To address this knowledge gap, we conducted a multi-omics analysis of the orange-red-flowered 'OrP' and the yellow-flowered 'ZS11' rapeseed cultivars. The total anthocyanin content of 'OrP' petals was 5.420-fold and 3.345-fold higher than 'ZS11' petals at the S2 and S4 developmental stages, respectively. The red coloration of 'OrP' flowers resulted primarily from the presence of anthocyanin pigment derivatives. The up-regulated differentially expressed genes (DEGs) of four stages in 'OrP' were found to be significantly enriched in phenylpropanoid, flavonoid, and anthocyanin metabolism-associated GO and KEGG terms. Weighted Gene Co-expression Network Analysis (WGCNA) revealed that 51 DEGs were linked to anthocyanin metabolism, including several structural genes such as BnaCHS, BnaF3H, BnaF3 ' H, BnaCHS, BnaDFR, BnaANS, BnaUGTs, and the transcription factor (TF) genes BnaHY5, BnaBBX22, BnaPIL1, BnaPAP2, BnaTT8, BnaTTG2, and BnaMYBL2. Furthermore, we found that three main factors affecting the relative content of anthocyanins in petals were likely responsible for the fading of 'OrP' petals, namely the significantly down-regulated expression of genes (BnaDFR, BnaANS, BnaPAP2, BnaTT8, and BnaTTG2) related to anthocyanin biosynthesis, the significantly up-regulated expression of genes (Bna.BGLUs, Bna.PRXs, and BnaMYBL2) related to anthocyanin degradation or the negative regulation of anthocyanin biosynthesis, and the rapidly increasing petals area.
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