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Food Chem X

Title:		Reducing the source/sink ratio of grapevine to face global warming in a semi-arid climate: Effects on volatile composition of Cabernet Sauvignon grapes and wines
Author(s):		Lu HC; Hu L; Liu Y; Cheng CF; Chen W; Li SD; He F; Duan CQ; Wang J;
Address:		"Center for Viticulture and Enology, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China. Key Laboratory of Viticulture and Enology, Ministry of Agriculture and Rural Affairs, Beijing 100083, China. CITIC Guoan Wine Co. Ltd, Manasi 832200, Xinjiang, China"
Journal Title:		Food Chem X
Year:		2022
Volume:		20220914
Issue:
Page Number:		100449 -
DOI:		10.1016/j.fochx.2022.100449
ISSN/ISBN:		2590-1575 (Electronic) 2590-1575 (Linking)
Abstract:		"The heterogeneity of the vineyard environment caused high variability in grape metabolites and flavor profiles, and the phenomenon was more prominent in recent years of climate change. Herein, distal leaf removal was applied in semi-arid Xinjiang to adjust the source to sink ratio of grapevines for three consecutive years (2018-2020). The grape-derived volatiles showed high correlations with specific climate factors such as temperature changes in the growth period. Results showed that distal leaf removal increased the solar radiation reaching the clusters in the first few days after applying LR treatments while not affecting the temperature. The improvement in fruity and floral aroma intensity by distal leaf removal was founded not only in grape metabolites but also in wines. Moderate cluster exposure brought by distal leaf removal was beneficial for the accumulation of isoprenoids, which therefore increased the fruity and floral intensity of wines. The carry-over effect did not show in consecutively defoliated vines among vintages regarding the wine aroma profile"
Keywords:		"1-LR1, distal leaf removal at the beginning of veraison in the same vines across vintages 1-LR2, distal leaf removal at post-veraison in the same vines across vintages 2-LR1, distal leaf removal at the beginning of veraison in new vines of each vintage 2-;"
Notes:		"PubMed-not-MEDLINELu, Hao-Cheng Hu, Li Liu, Yao Cheng, Chi-Fang Chen, Wu Li, Shu-De He, Fei Duan, Chang-Qing Wang, Jun eng Netherlands 2022/10/11 Food Chem X. 2022 Sep 14; 15:100449. doi: 10.1016/j.fochx.2022.100449. eCollection 2022 Oct 30"