Transcriptomic and Metabolomic Profiling Provides Insights into Flavonoid Biosynthesis and Flower Coloring in Loropetalum chinense and Loropetalum chinense var. rubrum
文献类型： 外文期刊
作者： Zhang, Xia 1 ; Zhang, Li 1 ; Zhang, Damao 1 ; Liu, Yang 1 ; Lin, Ling 5 ; Xiong, Xingyao 1 ; Zhang, Donglin 1 ; Sun, Ming 6 ; Cai, Ming 6 ; Yu, Xiaoying 1 ; Li, Yanlin 1 ;
作者机构： 1.Hunan Agr Univ, Coll Hort, Changsha 410128, Peoples R China
2.Minist Educ, Engn Res Ctr Hort Crop Germplasm Creat & New Varie, Changsha 410128, Peoples R China
3.Minist Educ, Hunan Midsubtrop Qual Plant Breeding & Utilizat En, Changsha 410128, Peoples R China
4.Hunan Acad Agr Sci, Hunan Hort Res Inst, Changsha 410125, Peoples R China
5.Hunan Agr Univ, Sch Econ, Changsha 410128, Peoples R China
6.Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Shenzhen 518120, Peoples R China
7.Kunpeng Inst Modern Agr, Foshan 528226, Peoples R China
8.Univ Georgia, Dept Hort, Athens, GA 30602 USA
9.Beijing Forest Univ, Sch Landscape & Architecture, Beijing 100083, Peoples R China
关键词： Loropetalum chinense var; rubrum; flavonoid biosynthesis; anthocyanins; flower coloring; metabolomic; transcriptomic
期刊名称：AGRONOMY-BASEL （ 影响因子：3.7； 五年影响因子：4.0 ）
ISSN：
年卷期： 2023 年 13 卷 5 期
页码：
收录情况： SCI
摘要： The Loropetalum chinense and Loropetalum chinense var. rubrum are typical as well as traditional ornamental and Chinese herbal medicines in Asia; however, more information is needed on the mechanisms underlying their flower coloring. Here, we profiled the flavonoid metabolome and carried out full-length sequencing in addition to transcriptome analyses to investigate the flavonoid biosynthesis and global transcriptome changes among different petal coloring cultivars of L. chinense and L. chinense var. rubrum. The total anthocyanins in addition to the RHSCC values and CIE 1976 L*a*b* values of petals were highly consistent with petal color. Moreover, a total of 207 flavonoid components were identified. Of these, 13 flavonoid compounds were considered significantly different expression compounds highly consistent with color information in the 4 samples. Meanwhile, the first reference full-length transcriptome of L. chinense var. rubrum was built, which had 171,783 high-quality nonredundant transcripts with correcting with next-generation sequencing (NGS). Among them, 52,851 transcripts were annotated in the seven databases of NR, KOG, GO, NT, Pfam, Swiss-Port, and KEGG. Combined with NGS analyses, the DETs involved in flavonoids and anthocyanins contributed greatest to the flower coloring. Additionally, the different expressions of eight LcDFRs and four LcANS genes were positively correlated with flavonoid biosynthesis, and the four LcBZ1 as well as one Lc3Mat1 were positively correlated with the content of seven anthocyanins revealed by coupling with metabolomics and transcriptomics analyses. Together, these results were used to mine candidate genes by analyzing flower coloring changes at comprehensive metabolic and transcriptomic levels in L. chinense and L. chinense var. rubrum.
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