terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Effect of foliar application of urea and nano-urea on the cell wall of Monastrell grape skins

Effect of foliar application of urea and nano-urea on the cell wall of Monastrell grape skins

Abstract

The foliar application of urea has been shown to be able to satisfy the specific nutritional needs of the vine as well as to increase the nitrogen composition of the must. On the other hand, the use of nanotechnology could be of great interest in viticulture as it would help to slow down the release of urea and protect it against possible degradation. Several studies indicate that cell wall synthesis and remodeling are affected by nitrogen availability.

The study was carried out over three years (2019, 2020 and 2021), the effect on the main components of the cell wall of Monastrell grape skins was compared to control after foliar treatments with urea and nano-urea. The treatments, in triplicate, were manually applied with a spray dispenser.

The proportion of isolated cell wall was increased in both treatments every year. This rise would indicate a thickening of the cell walls. Proteins were enhanced in 2019 and 2021 in grapes from the two treatments, whereas in 2020 they were not modified. Phenolic compounds were not affected in 2019, decreasing in the nano-urea treatment in 2020 and in the urea treatment in 2021. Cellulose was diminished in 2019 in the nano-urea treatment and in both treatments in 2021, but was not affected in 2020. Hemicellulose was increased for both treatments in both 2019 and 2021, but only for urea in 2020. Finally, uronic acids were lower compared to control for both treatments in 2019, but raise in the two subsequent years.

In conclusion, the cell wall was modified by both treatments, which may have implications on its rigidity and therefore on the extraction of the compounds of interest present in the grape skins. The treatments applied in the form of nano-urea had comparable effects to those obtained with urea in the conventional way, despite being applied at a significantly lower dose.

Acknowledgements: To all the staff of Estación Enológica de Jumilla

DOI:

Publication date: October 3, 2023

Issue: ICGWS 2023

Type: Article

Authors

María José Giménez-Bañón1*, Diego Fernando Paladines-Quezada1, Juan Daniel Moreno-Olivares1, Belén Parra-Torrejón2, Juan Antonio Bleda-Sánchez1, Gloria-Belén Ramírez-Rodríguez2, José Manuel Delgado-López2, Rocío Gil-Muñóz1

1Instituto Murciano de Investigación y Desarrollo Agrario y Medioambiental
2Departamento de Química Inorgánica. Facultad de Ciencias. Universidad de Granada

Contact the author*

Keywords

nanotechnology, nitrogen, fertilization, protein, phenolic-compound, cellulose, uronic-acids

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

First results on the chemical composition of red wines from the pressing of marc

In the Bordeaux vineyards, press wine represents approximately 15% of the total volume of wine produced[1]. Valuing this large volume of wine is necessary from an economic point of view, but also because of their organoleptic contribution to the blend, and their contribution to the construction of wines for laying down. Therefore, this study was developed considering the lack of recent scientific knowledge on the composition of red press wines. The aim of this study is to establish an initial assessment of their chemical composition including aromatic compounds and a phenolic part.
Read More

Using climate services to project grapevine varietal adequation under climate change – application to cv. Tempranillo in the Douro wine region

Vine growth circumstances are becoming warmer and drier because of climate change. Higher temperatures advance ripening to a point in the season less conducive to the production of fine wine, while drought reduces yields (Van Leeuwen et al., 2019). Several wine-producing regions around the world have already recognized threats to their viticultural viability (Santos et al., 2020). An economical and cost-effective strategy for adaptation is the employment of late-ripening, drought-resistant plant material (varieties, clones, and rootstocks).

Read More

Toasting and grain effect on Tempranillo red wine aged in Quercus petraea barrels

The barrel-making process is widely recognized as a crucial practice that affects the composition of barrel-aged wine. After the drying process, the staves are considered ready for barrel assembly, which includes the processes of bending and toasting the barrel structure. Toasting is considered one of the most critical stages in determining the physical and chemical composition of the staves, which can influence the chemical and sensory composition of the wine aged in barrels made from them [1].

Read More

Application of UV-B radiation in pre- and postharvest as an innovative and sustainable cultural practice to improve grape phenolic composition

Ultraviolet radiation (UVR) is a minor part of the solar spectrum, but it represents an important ecological factor that influences many biological processes related to plant growth and development. In recent years, the application of UVR in agriculture and food production is emerging as a clean and environmentally friendly technology.
In grapevine, many studies have been conducted on the effects of ambient levels of UVR, but there are few considering the effects of UV-B application on grape phenolic composition under commercial growing or postharvest conditions.

Read More

Differential gene expression and novel gene models in 110 Richter uncovered through RNA Sequencing of roots under stress

The appearance of the Phylloxera pest in the 19th century in Europe caused dramatical damages in grapevine diversity. To mitigate these losses, grapevine growers resorted to using crosses of different Vitis species, such as 110 Richter (110R) (V. berlandieri x V. rupestris), which has been invaluable for studying adaptations to stress responses in vineyards. Recently, a high quality chromosome scale assembly of 110R was released, but the available gene models were predicted without using as evidence transcriptional sequences obtained from roots, that are crucial organs in rootstock, and they may express certain genes exclusively. Therefore, we employed RNA sequencing reads of 110R roots under different stress conditions to predict new gene models in each haplotype of 110R under different stresses.

Read More