Transcript profiling for regulation of sweet potato skin color in Sushu8 and its mutant Zhengshu20
文献类型： 外文期刊
作者： Yang, Yufeng 1 ; Shi, Dianyi 3 ; Wang, Yannan 1 ; Zhang, Li 1 ; Chen, Xiangong 1 ; Yang, Xiaoping 1 ; Xiong, Haizheng; 1 ;
作者机构： 1.Henan Acad Agr Sci, Cereal Crop Inst, Zhengzhou 450002, Peoples R China
2.Univ Arkansas, Dept Hort, Fayetteville, AR 72701 USA
3.Neijiang Normal Univ, Coll Life Sci, Neijiang 641100, Peoples R China
关键词： Anthocyanin metabolism; Ipomoea batatas; Skin color; WGCNA
期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：4.27； 五年影响因子：4.816 ）
ISSN： 0981-9428
年卷期： 2020 年 148 卷
页码：
收录情况： SCI
摘要： Sweet potato [Ipomoea batatas (L.) Lam.] (2n = 6x = 90) is an economic important autopolyploid species and its varieties differ regarding storage root skin and flesh colors. Two sweet potato genetic lines, Sushu8 (with red skin) and its mutant Zhengshu20, which produced different colored storage roots, were used in this study. The total flavonoid, carotenoid, and anthocyanin contents of the two lines were analyzed and revealed that anthocyanin was primarily responsible for the skin color difference. In addition, the early storage root expanding stage was the key period for anthocyanin accumulation in Sushu8. A total of 24 samples, including the skins of the fibrous root and the storage root at the early and middle expanding stages as well as the flesh of the storage root at the middle expanding stage, were analyzed based on differentially expressed genes identified by transcriptome sequencing and a weighted gene co-expression network analysis. Two gene modules highly related with the regulation of sweet potato skin color through stress responses as well as starch synthesis and glucose metabolism were identified. Furthermore, the WRKY75 transcription factor gene, fructose-bisphosphate aldolase 2 gene, and other DEGs highly related to the regulation of anthocyanin metabolism were enriched in the brown and green modules.
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