 IVES 9 IVES Conference Series 9 Macrowine 9 Macrowine 2021 9 Grapevine diversity and viticultural practices for sustainable grape growing 9 Methyljasmonate versus nanomethyljasmonate: effect on monastrell nitrogen composition

Methyljasmonate versus nanomethyljasmonate: effect on monastrell nitrogen composition

Abstract

AIM: The aim of this work was to evaluate the effect of preharvest application in Monastrell berries using two different types of applications: conventional treatments (methyl jasmonate) and nanocompounds (nanomethyl jasmonate) on Monastrell nitrogen composition in grapes and wines.

METHODS: The treatments was applied during two vintages (2019 and 2019) in a plot located in the southeast of Spain (Bullas, Murcia). Foliar applications were carried out at veraison and 7 days later. 200 mL per plant will be applied, using Tween 80 at 0.1% (v/v) in each solution. The applied treatments were the following: methyl jasmonate (MeJ) (10 mM) and the application of nanoparticles, nano-MeJ (0.67 mM). The corresponding analyses were made in grapes at harvest and in wines at the end of alcoholic fermentation. The ammonium ion (NH4 +) and the following free amino acids were analysed by HPLC: aspartic acid (Asp), glutamic acid (Glu), serine (Ser), asparagine (Asp), glutamine (gln), histidine (His), glycine (Gly) , threonine (Thr), β-Alanine (β-Ala), arginine (Arg), α-Alanine (α-Ala), γ-aminobutyric acid (GABA), proline (Pro), tyrosine (Tyr), valine (Val ), methionine (Met), cysteine (Cys), isoleucine (Iso), leucine (Leu), tryptophan (Trp), phenylalanine (Phe), ornithine (Orn) and lysine (Lys).

RESULTS: In general terms, the application of elicitors (MeJ and nano-MeJ) significantly increased the nitrogen composition of musts and wines of the Monastrell variety. Although the results obtained were influenced by the climatic differences experienced during the two years of study, so that during the first year more noticeable differences were obtained between the treatments and the control vineyards.

CONCLUSIONS

In conclusion, although the results are preliminary, the exogenous application of nano-MeJ could be an interesting alternative to be used instead of the conventional elicitor with two aims: to reduce the use of agrochemical in plants and improve nitrogen composition in grapes and wines.

DOI:

Publication date: September 2, 2021

Issue: Macrowine 2021

Type: Article

Authors

Maria José. Gimenez-Bañón

Murciano Institute Of Research And Agricultural And Food-Spain Juan Daniel Moreno-Olivares- Murciano Institute Of Research And Agricultural And Food-Spain Diego Fernando. Paladines-Quezada- Murciano Institute Of Research And Agricultural And Food-Spain Juan Antonio. Bleda-Sánchez – Murciano Institute Of Research And Agricultural And Food-Spain Jose Ignacio. Fernández-Fernández- Murciano Institute Of Research And Agricultural And Food-Spain Gloria Ramirez- Deparment Of Inorganic Chemistry, Faculty Of Science, University Of Granada (Spain) Jose Manul Delgado-López – Deparment Of Inorganic Chemistry, Faculty Of Science, University Of Granada (Spain)

Contact the author

Keywords

amino acids; yan, methyl jasmonate; nanoparticles

Citation

Grape genetic research in the age of pangenomes

Combined improvements in sequencing technologies and assembly algorithms have led to staggering improvements in the quality of grape genome assemblies.

Staying hydrated – not easy when it’s hot!

Heat and drought episodes during the growing season are becoming more frequent and more severe in many of the world’s grape‐growing regions

Terroir effects on the response of Tempranillo grapevines to irrigation in four locations of Spain: agronomic performance and water relations

We report the effects of different drip irrigation treatments on the agronomic performance and water relations of Tempranillo grapevines, pruned to a bilateral cordon

Quality of Merlot wines produced from terraced vineyards and vineyards on alluvial plains in Vipava valley, Slovenia (pdo)

AIM: Different factors affect the style and quality of wine and one of the most important are environmental factors of vineyard location.

Changes in white wine composition after treatment with cationic exchange resin: impact on wine oxidation after 8 years of bottle storage

Samples from 3 wine types were treated with a cationic exchange resin (7 lots) and stored for 8 years (47 samples). Forty-seven parameters were determined, including (1) important substrates with impact in white wine oxidation and (2) markers of oxidation. From group 1, sugars, elements, phenolic compounds, α-dicarbonyls and SO2 and from group 2, browning (A420), acetaldehyde, alkanals, furanic compounds were quantified.