Integrated analysis of carotenoid metabolites and transcriptome identifies key genes controlling carotenoid compositions and content in sweetpotato tuberous roots (Ipomoea batatas L.)
文献类型： 外文期刊
作者： Jia, Ruixue 1 ; Zhang, Rong 2 ; Gangurde, Sunil S. 4 ; Tang, Chaochen 2 ; Jiang, Bingzhi 2 ; Li, Guilan 1 ; Wang, Zhangying 2 ;
作者机构： 1.Hebei Normal Univ Sci & Technol, Coll Agron & Biotechnol, Changli, Peoples R China
2.Guangdong Acad Agr Sci, Crops Res Inst, Guangzhou, Peoples R China
3.Key Lab Crop Genet Improvement Guangdong Prov, Guangzhou, Peoples R China
4.Int Crops Res Inst Semi Arid Trop, Hyderabad, India
5.Crop Protect & Management Res Unit, USDA ARS, Tifton, GA USA
6.Univ Georgia, Dept Plant Pathol, Tifton, GA USA
关键词： sweetpotato; coloration; key genes; transcription factor; WGCNA
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：6.627； 五年影响因子：7.255 ）
ISSN： 1664-462X
年卷期： 2022 年 13 卷
页码：
收录情况： SCI
摘要： Sweetpotato (Ipomoea batatas L.) with different depths of yellow color contains different compositions of carotenoids, which are beneficial for human health. In this study, we performed an integrated analysis of metabolomic and transcriptomic to identify key genes playing a major role in carotenoid coloration in sweetpotato tuberous roots. Herein, 14 carotenoids were identified in five sweetpotatoes. Orange-red and orange cultivars were dominated by beta-carotene (385.33 mu g/g and 85.07 mu g/g), yellow cultivar had a high beta-cryptoxanthin (11.23 mu g/g), light-yellow cultivar was rich in zeaxanthin (5.12 mu g/g), whereas lutein (3.34 mu g/g) was the main carotenoid in white cultivar. Furthermore, 27 differentially expressed genes involved in carotenoid metabolism were identified based on comparative transcriptome. Weighted gene co-expression network analysis identified 15 transcription factors highly associated with carotenoid content in sweetpotatoes. These results provide valuable information for revealing the regulatory mechanism of carotenoid metabolism in different-colored sweetpotato tuberous roots.
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