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Metabolomic and transcriptomic analyses reveal the effects of self- and hetero-grafting on anthocyanin biosynthesis in grapevine

文献类型： 外文期刊

作者： Zhong, Haixia 1 ; Liu, Zhongjie 2 ; Zhang, Fuchun 1 ; Zhou, Xiaoming 1 ; Sun, Xiaoxia 1 ; Li, Yongyao 2 ; Liu, Wenwen 2 ; Xiao, Hua 2 ; Wang, Nan 2 ; Lu, Hong 2 ; Pan, Mingqi 1 ; Wu, Xinyu 1 ; Zhou, Yongfeng 2 ;

作者机构： 1.Xinjiang Acad Agr Sci, Key Lab Genome Res & Genet Improvement Xinjiang C, Inst Hort Crops, Urumqi, Peoples R China

2.Chinese Acad Agr Sci, Guangdong Lab Lingnan Modern Agr, Agr Genom Inst Shenzhen,Shenzhen Branch, Minist Agr & Rural Affairs,Genome Anal Lab, Shenzhen, Peoples R China

期刊名称：HORTICULTURE RESEARCH （ 影响因子：7.291； 五年影响因子：7.487 ）

ISSN： 2662-6810

年卷期： 2022 年 9 卷

页码：

收录情况： SCI

摘要： Grafting, which joins a scion from a cultivar with the stem of a rootstock from a grapevine wild relative, is commonly used in viticulture. Grafting has crucial effects on various phenotypes of the cultivar, including its phenology, biotic and abiotic resistance, berry metabolome, and coloration, but the underlying genetics and regulatory mechanisms are largely unexplored. In this study, we investigated the phenotypic, metabolomic, and transcriptomic profiles at three developmental stages (45, 75, and 105 days after flowering) of the Crimson Seedless cultivar (Vitis vinifera) grafted onto four rootstocks (three heterografts, CS/101-14, CS/SO4, and CS/110R and one self-graft, CS/CS) with own-rooted graft-free Crimson Seedless (CS) as the control. All the heterografts had a significant effect on berry reddening as early as similar to 45 days after flowering. The grafting of rootstocks promoted anthocyanin biosynthesis and accumulation in grape berries. The metabolomic features showed that cyanidin 3-O-glucoside, delphinidin 3-O-glucoside, malvidin 3-O-glucoside, peonidin 3-O-glucoside, and petunidin 3-O-glucoside were the pigments responsible for the purplish-red peel color. Transcriptomic analyses revealed that anthocyanin biosynthesis-related genes, from upstream (phenylalanine ammonia-lyase) to downstream (anthocyanidin 3-O-glucosyltransferase and anthocyanidin synthase), were upregulated with the accumulation of anthocyanins in the heterografted plants. At the same time, all these genes were also highly expressed and more anthocyanin was accumulated in self-grafted CS/CS samples compared with own-rooted graft-free CS samples, suggesting that self-grafting may also have promoted berry reddening in grapevine. Our results reveal global transcriptomic and metabolomic features in berry color regulation under different grafting conditions that may be useful for improving berry quality in viticulture.

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