浆果
类黄酮
花青素
芍药苷
化学
马维定
锰
食品科学
多酚
葡萄
转录组
类黄酮生物合成
生物化学
植物
飞燕草素
氰化物
生物
基因表达
基因
抗氧化剂
有机化学
作者
Ruihua Ren,Huangzhao Chen,Rui Xie,Huang Yuan,Sha Xie,Zhenwen Zhang
摘要
Flavonoids are vital for the development of high-quality grapes and wine, and manganese deficiency decreases grape berry coloration. However, the effects and underlying mechanisms of action of manganese sulfate on grape metabolic profiles have not been adequately researched. In this study, three concentrations of manganese sulfate solutions, 0.5 μmol·L-1 (low, L), 5 μmol·L-1 (middle, M - the standard manganese concentration of Hoagland nutrient solution, control), and 1000 μmol·L-1 (high, H), were applied to the 'Cabernet Sauvignon' grapevine (Vitis vinifera L.) to explore the effect on berry composition.Manganese application improved manganese concentration effectively in grape organs. Furthermore, the concentrations of malvidin 3-O-(6-O-acetyl)-glucoside, malvidin 3-O-glucoside, malvidin-trans-3-O-(6-O-p-coumaryl)-glucoside, and peonidin 3-O-(6-O-acetyl)-glucoside increased significantly under H treatment. Weighted gene co-expression network analysis (WGCNA) revealed that the structural genes (VvDFR, VvUFGT, and VvOMT) of flavonoid biosynthesis were upregulated under H treatment, and their transcription levels correlated positively with malvidin- and peonidin-derived anthocyanin concentrations.This study suggested that manganese application regulates berry transcriptional and flavonoid metabolic profiles, providing a theoretical basis for improving the color of red grapes and wines. © 2023 Society of Chemical Industry.
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