数字农科院2.0

Multiomics Analysis Reveals the Chemical and Genetic Bases of Pigmented Potato Tuber

文献类型： 外文期刊

作者： Zhong Zhang;Dao Zhou;Shalan Li;Jun Pan;Jun Liang;Xi Wu;Xu Na Wu;Leonard Krall;Guangtao Zhu

作者机构：

关键词： anthocyanin;carotenoid;muti-omics;potato tuber;transcription factor;WGCNA

期刊名称： Journal of agricultural and food chemistry

ISSN： 1520-5118

年卷期： 2023 年 71 卷 43 期

页码：

收录情况： SCIE（2023版） ; ; EI（2023版）

摘要： Anthocyanins and carotenoids determine the diversity of potato tuber flesh pigmentation; here, the underlying chemical and genetic bases were elucidated by multiomics analyses. A total of 31 anthocyanins and 30 carotenoids were quantified in five differently pigmented tubers. Cyanidin and pelargonidin derivatives determined the redness, while malvidin, petunidin, and delphinidin derivatives contributed to purpleness. Violaxanthin derivatives determined the light-yellow color, while zeaxanthin and antheraxanthin derivatives further enhanced the deep-yellow deposition. Integrated transcriptome and proteome analyses identified that F3'5'H highly enhanced anthocyanin biosynthesis in purple flesh and was responsible for metabolic divergence between red and purple samples. BCH2 significantly enhanced carotenoid biosynthesis in yellow samples and along with ZEP, NCED1, and CCD1 genes determined metabolic divergence between light and deep-yellow samples. The weighted correlation network analysis constructed a regulatory network revealing the central role of AN1 in regulating anthocyanin biosynthesis, and 10 new transcription factors related to anthocyanin and carotenoid metabolism regulation were identified. Our findings provide targeted genes controlling tuber pigmentation, which will be meaningful for the genetic manipulation of tuber quality improvement.

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