Changes in sugar content and related enzyme activities in table grape (Vitis vinifera L.) in response to foliar selenium fertilizer. (17th March 2017)

• Record Type: Journal Article
• Authors: Zhu, Shuaimeng; Liang, Yinli; An, Xiaojuan; Kong, Fanchao; Gao, Dekai; Yin, Hongfei
• Is Part Of: Journal of the science of food and agriculture. Volume 97:Number 12(2017)
• Page Start: 4094
• Page End: 4102
• Publication Date: 2017-03-17
• Subjects: Hutai No. 08 -- sugar components -- metabolic enzymes -- dynamic change; Food -- Periodicals; Agriculture -- Periodicals; 664
• DOI: 10.1002/jsfa.8276
• Languages: English
• ISSNs: 0022-5142

Abstract

Abstract: BACKGROUND: Spraying selenium (Se) fertilizer is an effective method for Se‐enriched fruit production. Sugar content in fruit is the major factor determining berry quality. However, changes in sugar metabolism in response to Se fertilizer are unclear. Hence, this study was conducted to identify the effects of Se fertilizer on sugar metabolism and related enzyme activities of grape berries. Additionally, production of leaves with and without Se fertilizer was also investigated. RESULTS: Acid invertase (AI) activity, total soluble sugar and Se content in berries, and photosynthetic rate in leaves produced under Se fertilizer treatments were higher than that of control. Glucose and fructose were the primary sugars in berries, with a trace of sucrose. In both berries and leaves, neutral invertase activity was lower than AI, there was no significant difference in neutral invertase, sucrose synthase and sucrose phosphate synthase between Se fertilizer‐treated and control. In berries, AI showed a significant positive correlation with glucose and fructose; also Se content was significantly correlated with sugar content. CONCLUSION: AI played an important role in the process of sugar accumulation in berries; high AI activity in berries and photosynthetic rate in leaves could explain the mechanism by which Se fertilizer affected sugar accumulation in berries. © 2017 Society of Chemical Industry