干旱区生态环境知识资源中心(Arid): Effects of vine top shading on the accumulation of C6/C9 compounds in 'Cabernet Sauvignon' (Vitis vinifera L.) grape berries in northwestern China

Arid

DOI	10.1002/jsfa.11522
	Effects of vine top shading on the accumulation of C6/C9 compounds in 'Cabernet Sauvignon' (Vitis vinifera L.) grape berries in northwestern China
	Zhang, Zhenzhen; Qiao, Dan; He, Lei; Pan, Qiuhong; Wang, Shuwei
通讯作者	Zhang, ZZ (corresponding author), Xinjiang Agr Univ, Coll Food Sci & Pharm, Urumqi 830052, Xinjiang, Peoples R China.
来源期刊	JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
ISSN	0022-5142
EISSN	1097-0010
出版年	2022
英文摘要	BACKGROUND The Xinjiang Uygur Autonomous Region is an arid and semi-arid region with low rainfall and strong sunlight; thus, grape berries in this region accumulate sugar content rapidly, and the ripening process is shorter than that in other regions. Although previous studies illustrated that altered sunlight conditions could influence the aroma profiles of grape berries, less attention has been paid to the effect of vine top shading on volatile compounds under a dry-hot climate. RESULT We focused on the effects of vine top shading on the concentrations of linolenic and linoleic acids, as well as their metabolites, the C6/C9 compounds, in grape berries. Four vine top shading treatments at veraison (ripening onset) and post-veraison (skin full coloration) were performed by reducing solar exposure to the grapevines by 20% and 50% respectively. Apart from (E)-2-hexenal in the 20% shading treatment of 2016, (E)-2-hexenal were not promoted by the 50% shading and 20% shading treatments during veraison to harvest in both of the vintages. By contrast, the influence of vine top shading from post-veraison till harvest was different between the two vintages; these C6 compounds were decreased in both of the shading treatments in 2016, whereas most of them were promoted in 2017, possibly related to daily sunshine hours in this period. In addition, the C9 compound nonanal with very low concentration exhibits a significant difference among various treatments by two-factor analysis of variance. As for linolenic acid and linoleic acid, two types of C6 compound biosynthetic precursors, four shading treatments all reduced their concentration, except for linolenic acid in the 50% shading treatment of 2016. Moreover, it appeared to have no apparent correlation between the variations of two precursors and their volatile metabolites, indicating that there is a complex impact of vine shading on C6 compound biosynthesis. CONCLUSION Vine top shading at veraison can reduce the accumulation of some C6 compounds in grape berries, but no consistent consequence was attained for the vine shading at pre-veraison. The findings indicate the significance of grapevine solar exposure management at veraison in controlling the level of C6 compounds in a dry-hot region like Xinjiang. (c) 2021 Society of Chemical Industry.
英文关键词	vine top shading C6 C9 compounds linolenic acid
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000697224200001
WOS关键词	VOLATILE COMPOUNDS ; AROMA COMPOUNDS ; PROFILES ; PATHWAY ; GROWTH ; LIGHT ; FRUIT ; BUNCH ; LEAF
WOS类目	Agriculture, Multidisciplinary ; Chemistry, Applied ; Food Science & Technology
WOS研究方向	Agriculture ; Chemistry ; Food Science & Technology
来源机构	中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/364050
作者单位	[Zhang, Zhenzhen; Qiao, Dan; Wang, Shuwei] Xinjiang Agr Univ, Coll Food Sci & Pharm, Urumqi 830052, Xinjiang, Peoples R China; [He, Lei; Pan, Qiuhong] China Agr Univ, Coll Food Sci & Nutr Engn, Ctr Viticulture & Enol, Beijing, Peoples R China; [He, Lei; Pan, Qiuhong] Minist Agr & Rural Affairs, Key Lab Viticulture & Enol, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Zhenzhen,Qiao, Dan,He, Lei,et al. Effects of vine top shading on the accumulation of C6/C9 compounds in 'Cabernet Sauvignon' (Vitis vinifera L.) grape berries in northwestern China[J]. 中国农业大学,2022.
APA	Zhang, Zhenzhen,Qiao, Dan,He, Lei,Pan, Qiuhong,&Wang, Shuwei.(2022).Effects of vine top shading on the accumulation of C6/C9 compounds in 'Cabernet Sauvignon' (Vitis vinifera L.) grape berries in northwestern China.JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE.
MLA	Zhang, Zhenzhen,et al."Effects of vine top shading on the accumulation of C6/C9 compounds in 'Cabernet Sauvignon' (Vitis vinifera L.) grape berries in northwestern China".JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE (2022).