terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Effect of spray with autochthonous Trichoderma strains and its secondary metabolites on the quality of Tempranillo grape

Effect of spray with autochthonous Trichoderma strains and its secondary metabolites on the quality of Tempranillo grape

Abstract

Trichoderma is one of the most widely used fungal biocontrol agents on vineyards due to its multiple benefits on this crop, such as its fungicidal and growth promoting capacity. In this work, we have analyzed the effect on the concentration of nutrients in grapevine leaves and on the quality of the grape must after spraying an autochthonous strain of Trichoderma harzianum and one of the main secondary metabolites produced by this genus, 6-pentyl-α-pyrone (6PP).

The trials were carried out in two regular vine plantations (Vitis vinifera cv. Tempranillo). The experimental design was in randomized blocks with three treatments (Trichoderma harzianum autochthonous strain, 6PP and control) and 10 repetitions (plants) per block. A total of 6 applications of treatments were made on the entire vegetative part of the plant every 15 days. During the development of the test, levels of potassium, calcium and magnesium were measured in the vine leaves and must quality parameters were analyzed at the time of harvest.

The nutrient data showed an increase in the concentration of potassium in leaves in the treatment with the autochthonous Trichoderma harzianum strain compared to the other two treatments. In the case of the analysis of the quality of the grapes, an increase in the concentrations of malic acid, total acidity, potassium, probable º and density of the must was also observed in the treatment with the autochthonous Trichodermacompared to the rest of the treatments.

Thanks to the Ministry of Education, Culture and Sports (Spain) for the grant awarded to Laura Zanfaño González (FPU 20/03040), to the own research program of the University of León 2022 for the grant awarded to Daniela Ramírez Lozano. As well as the project acronym LOWPHWINE, reference IDI-20210391.

DOI:

Publication date: October 10, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Zanfaño L.1*, Carro-Huerga G.1, Mayo-Prieto S.1, Rodríguez-González A.1, Ramírez-Lozano D.1, Gutiérrez S.2, Casquero P.A.1

1Grupo de Investigación de Ingeniería y Agricultura Sostenible (GUIIAS). Instituto de Medio Ambiente, Recursos Naturales y Biodiversidad, Universidad de León Av. Portugal 41, 24071 León, España.
2Grupo Universitario de Investigación en Ingeniería y Agricultura Sostenible (GUIIAS). Área de Microbiología. Escuela de Ingeniería Agraria y Forestal. Campus de Ponferrada. Universidad de León. León. España.

Contact the author*

Keywords

Trichoderma harzianum, 6PP, potassium, quality of the grapes

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Effect of riboflavin on the longevity of white and rosé wines

Light is a fundamental part at sales points which influences in the conservation of wines, particularly in those that are sold in transparent glass bottles such as rosé wines and increasingly white wines. The photochemical effect known as “light-struck taste” can cause changes in the aromatic characteristics of the wine. This “light-struck taste” is due to reactions triggered by the photochemical sensitivity of riboflavin (RBF).

The surprising role of VvLYK6 in grapevine immune responses triggered by chitin oligomers

For sustainable viticulture, the substitution of chemical inputs with biocontrol products has become one of the most considered strategies. This strategy is based on elicitor-triggered immunity that requires a deep understanding of the molecular mechanisms involved in plant defense activation. Plant immune responses are triggered through the perception of conserved microbe-associated molecular patterns (MAMPs) which are recognized by pattern recognition receptors (PRRs) at the plasma membrane.

Investigating the Ancient Egyptian wines: The wine jars database

In Ancient Egypt, wine was a luxury product consumed mainly by the upper classes and the royal family and offered to gods in daily religious rituals in the temples.
Since the Predynastic (4000-3100 BC) period, wine jars were placed in tombs as funerary offerings. From the Old Kingdom (2680-2160 BC) to the Greco-Roman (332 BC-395 AD) period, viticulture and winemaking scenes were depicted on the private tombs’ walls. During the New Kingdom (1539-1075 BC), wine jars were inscribed to indicate: vintage year, product, quality, provenance, property and winemaker’s name and title.

Association between dietary pattern and wine consumption and Alzheimer’s disease in a cohort from La Rioja (Spain)

Addressing modifiable risk factors is the most promising strategy to prevent/delay Alzheimer Disease (AD)[1]. The aim of the study was to establish the connections between dietetic habits, wine consumption and AD. Thus, 98 volunteers were recruited: 50 diagnosed as AD and 48 healthy/controls. The Food Frequency Questionnaire (FFQ) was used for dietary patterns assessment and, based on these data, the Mind Diet Score was calculated. (Poly)phenol metabolites (especially derived from wine consumption) were analyzed by UPLC-QqQ-MS/MS in 24-h urine samples to confirm dietary (poly)phenol consumption.

The characterization of Vitis vinifera L cv. Cabernet sauvignon: the contribution of Ecklonia maxima seaweed extract

Biostimulants and biofertilizers are considered environmentally friendly and cost-effective alternatives to synthetic fertilizers, plant growth regulators and crop improvement products. Broadly, plant biostimulants are expected to improve nutrient use efficiency, tolerance to abiotic stress, quality traits and availability of nutrients in the soil or rhizosphere. Currently, seaweed extracts account for more than 33% of the total plant biostimulant market. Within this category, Ascophyllum nodosum (AN), is the most widely studied and applied in biostimulant formulations.