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Transcriptome Analysis of Key Genes Involved in Color Variation between Blue and White Flowers of Iris bulleyana

文献类型： 外文期刊

作者： Ma, Lulin 1 ; Zhang, Yiping 1 ; Cui, Guangfen 1 ; Duan, Qing 1 ; Jia, Wenjie 1 ; Xu, Feng 1 ; Du, Wenwen 1 ; Wang, Xiangning 1 ; Li, Xiang 1 ; Chen, Fadi 2 ; Wang, Jihua 1 ;

作者机构： 1.Yunnan Acad Agr Sci, Natl Engn Res Ctr Ornamental Hort, Key Lab Yunnan Flower Breeding, Flower Res Inst, Kunming 650205, Peoples R China

2.Nanjing Agr Univ, Coll Hort, Nanjing 210095, Peoples R China

期刊名称：BIOMED RESEARCH INTERNATIONAL （ 影响因子：3.246； 五年影响因子：3.767 ）

ISSN： 2314-6133

年卷期： 2023 年 2023 卷

页码：

收录情况： SCI

摘要： Iris bulleyana Dykes (Southwest iris) is an extensively distributed Iridaceae species with blue or white flowers. Hereby, we performed a systematic study, employing metabolomics and transcriptomics to uncover the subtle color differentiation from blue to white in Southwest iris. Fresh flower buds from both cultivars were subjected to flavonoid/anthocyanin and carotenoid-targeted metabolomics along with transcriptomic sequencing. Among 297 flavonoids, 24 anthocyanins were identified, and 13 showed a strong down-accumulation pattern in the white flowers compared to the blue flowers. Significant downregulation of 3GT and 5GT genes involved in the glycosylation of anthocyanins was predicted to hinder the accumulation of anthocyanins, resulting in white coloration. Besides, no significant altered accumulation of carotenoids and expression of their biosynthetic genes was observed between the two cultivars. Our study systematically addressed the color differentiation in I. bulleyana flowers, which can aid future breeding programs.

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