Dynamic changes in monoterpene accumulation and biosynthesis during grape ripening in three Vitis vinifera L. cultivars. (November 2020)

• Record Type: Journal Article
• Authors: Yue, Xiaofeng; Ren, Ruihua; Ma, Xin; Fang, Yulin; Zhang, Zhenwen; Ju, Yanlun
• Is Part Of: Food research international. Volume 137(2020)
• Publication Date: 2020-11
• Subjects: Free monoterpenes -- Bound monoterpenes -- Terpene synthase genes -- Monoterpene β-D-glucosyltransferases -- Grape ripening; (-)-Linalool (PubChem CID: 443158) -- (-)-alpha-Terpineol (PubChem CID: 443162) -- Nerol (PubChem CID: 643820) -- Nerol oxide (PubChem CID: 61275) -- Citronellol (PubChem CID: 8842) -- Limonene (PubChem CID: 22311) -- γ-geraniol (PubChem CID: 518689) -- Geraniol (PubChem CID: 637566) -- β-cis-ocimene (PubChem CID: 5320250) -- Terpinolene (PubChem CID: 11463); Food -- Analysis -- Periodicals; Food industry and trade -- Periodicals; Food industry and trade -- Canada -- Periodicals; Food Technology -- Periodicals; Food -- Periodicals; Food-Processing Industry -- Periodicals; Aliments -- Industrie et commerce -- Périodiques; Aliments -- Industrie et commerce -- Canada -- Périodiques; Aliments -- Recherche -- Périodiques; Food industry and trade; Canada; Periodicals; Electronic journals; 664.005
• DOI: 10.1016/j.foodres.2020.109736
• Languages: English
• ISSNs: 0963-9969

Abstract

Graphical abstract: Highlights: Total bound monoterpenes were higher than that of free during three grapes ripening. The monoterpene profiles were correlated with some TPS and GT genes expressions. The monoterpene contents were obvious higher in Muscat Hamburg than other two grapes. Abstract: Monoterpenes are important aroma components in grapes and wines. We analyzed the free and bound monoterpene profiles and the transcript levels of terpenoid biosynthesis genes in Vitis Vinifera cvs. Muscat Hamburg, Riesling, and Sauvignon Blanc grapes at five ripening stages. Principal component analyses revealed that the three cultivars had different free monoterpene profiles at harvest and the early stage of ripening. In all cultivars, the total bound monoterpene contents were higher than the free monoterpene contents during grape ripening. The changes in monoterpene profiles in different grape varieties were correlated with the transcript levels of some VviTPS and VviGT genes. In Riesling, the VviGT14 and VviUGT88A1L1 transcript levels were related to geraniol glucoside accumulation. In Muscat Hamburg, the VviPNLGl1, VviPNLGl2, and VviPNLGl4 transcript levels were related to linalool accumulation. Understanding the dynamic changes in monoterpene accumulation and biosynthesis will allow winemakers to devise strategies to improve grape and wine aromas.