Integrated transcriptome and metabolome analysis revealed that HaMYB1 modulates anthocyanin accumulation to deepen sunflower flower color

花青素 生物 转录组 MYB公司 代谢组 向日葵 类黄酮生物合成 类黄酮 向日葵 次生代谢 植物 花瓣 栽培 颜料 基因 生物化学 基因表达 园艺 生物合成 化学 代谢物 有机化学 抗氧化剂
作者
Siqi Ma,Hanlin Zhou,Tingting Ren,Er-ru Yu,Bin Feng,Juying Wang,Shouxin Zhang,Chao Zhou,Yiqiang Li
出处
期刊:Plant Cell Reports [Springer Nature]
卷期号:43 (3) 被引量:2
标识
DOI:10.1007/s00299-023-03098-3
摘要

Abstract Key message HanMYB1 was found to play positive roles in the modulation of anthocyanins metabolism based on the integrative analysis of different color cultivars and the related molecular genetic analyses. Abstract As a high value ornamental and edible crop with various colors, sunflowers ( Helianthus annuus L.) provide an ideal system to understand the formation of flower color. Anthocyanins are major pigments in higher plants, which is associated with development of flower colors and ability of oxidation resistance. Here, we performed an integrative analysis of the transcriptome and flavonoid metabolome in five sunflower cultivars with different flower colors. According to differentially expressed genes and differentially accumulated flavonoids, these cultivars could be grouped into yellow and red. The results showed that more anthocyanins were accumulated in the red group flowers, especially the chrysanthemin. Some anthocyanins biosynthesis-related genes like UFGT (UDP-glycose flavonoid glycosyltransferase) also expressed more in the red group flowers. A MYB transcriptional factor, HanMYB1, was found to play vital positive roles in the modulation of anthocyanins metabolism by the integrative analysis. Overexpressed HanMYB1 in tobacco could deepen the flower color, increase the accumulation of anthocyanins and directly active the express of UFGT genes. Our findings indicated that the MYB transcriptional factors provide new insight into the dynamic regulation of the anthocyanin biosynthesis in facilitating sunflower color formation and anthocyanin accumulation.
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