Pre-Harvest Benzothiadiazole Spraying Promotes the Cumulation of Phenolic Compounds in Grapes

Abstract

Benzothiadiazole (BTH) is a commercial chemical elicitor that can induce an innate immune response in grapevines and improve the phenolic components and color quality of grapes and corresponding products. The literature on the influence of BTH on the accumulation and metabolism of phenols from grapes is extensive. However, many unknown bio-mechanisms involved have been poorly investigated, which opens a gateway for pioneering research that needs to be done in this field. To this purpose, this review aims to analyze and explore the gaps in current research so that subsequent studies may be geared towards them.

Influence of Benzothiadiazole on the Accumulation and Metabolism of C6 Compounds in Cabernet Gernischt Grapes (Vitis vinifera L.)

“…However, C6 esters demonstrate contrasting patterns. Interestingly, the significant effects of BTH treatments on bound C6 aldehydes and C6 alcohols were mainly observed before mid-veraison (weeks 7-11), whereas the significant effects on bound C6 esters were mainly observed after veraison (weeks [13][14][15]. This suggests a lag in the impact of BTH treatment on C6 compounds, as elaborated in the OPLS-DA analysis score plot (Figure 5A).…”

“…As a result, the sucrose content decreases, while the fructose and glucose contents increase [23]. Glucose can also be synthesized and catalyzed by glucose phosphoglucomutase to generate UDP-glucose and ADP-glucose, which serve as precursors for the synthesis of phenolics and starch, respectively [15]. Therefore, the results indicate that BTH promoted glucose metabolism by increasing phosphoglucomutase activity, resulting in a decreased glucose content and increased phenolic content.…”

“…Several factors have been found to influence the production and accumulation of C6 compounds in grape cultivation. These factors include the viticultural environment climate [5,6], grape variety [7,8], maturity stages [8,9], cluster thinning [10,11], light condition of the berry microclimate [11], training system [12,13], rainfall [14], and exogenous spraying [15,16].…”

“…BTH affects the grape anthocyanin composition, grape skin tannin, and flavonol content [25,26], as well as the concentration of terpenoids and norisoprenoids in grapes [22]. Previous research has mostly examined the impact of BTH application on the grape cell wall composition [18,19], phenolic compounds [15,21,27], color [19,28], and hydrogen peroxide and reactive oxygen species (ROS) metabolism [18,29,30]. However, a limited number of studies have examined the impact of BTH on the composition of grape aroma compounds [31].…”

Melatonina E Ácido Salicilico Na Preservação Pós-Colheita De Uvas De Mesa Sem Semente: Uma Revisão Narrativa

“…Além disso, determinadas práticas podem influenciar diretamente no metabolismo primário e secundário das bagas de uvas, como técnicas agronômicas, condições climáticas, aplicação de substâncias exógenas, pragas e doenças e a própria genética das videiras, e por este motivo, pesquisadores e produtores buscam ferramentas confiáveis para obter melhores tipos de cachos de uvas de mesa, com objetivo de atender as expectativas do mercado (JIANG, et al, 2022).…”