terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Biodiversity and biocontrol ability of Trichoderma natural populations in soil vineyards from Castilla y León region (Spain)

Biodiversity and biocontrol ability of Trichoderma natural populations in soil vineyards from Castilla y León region (Spain)

Abstract

Trichoderma is a microorganism present in many agricultural soils and some of its species could be used as natural biological control agents. In this work, the presence of natural populations of Trichoderma was estimated in soil vineyard and its biocontrol capacity against Phaeoacremonium minimum, one of the main agent causals of grapevine trunk diseases instead of using pesticides. Moreover, physicochemical variables in soil such as pH, organic matter and nutrients were evaluated to determine a possible correlation to natural populations of Trichoderma.

Ten different plots were selected from Castilla y León region in order to estimate the natural presence of Trichodermain soil vineyards. Samples were collected during winter at 10-30 cm depth. After, the presence of Trichoderma and main physical and chemical characteristics were evaluated in these soils. Moreover, in vitro tests of Trichoderma were done against P. minimum.

This work showed that Trichoderma soil abundance was higher in a vineyard from PDO Bierzo and none Trichoderma was found in 2 vineyards from PDO Ribera del Duero. A Principal Component analysis was performed to evaluate the possible relationship to physicochemical values of soil and presence of Trichoderma. We obtained that extractable iron was positively correlated (p<0.05) to Trichoderma populations in soil and pH was negatively correlated (p<0.05) to the presence of Trichoderma in soil. Also, autochthonous strains showed a significant in vitro biocontrol against the pathogen P. minimum.

These results indicate that populations of Trichoderma in soil could be used as biological control agents in soil and are influenced by abiotic conditions.

Thanks to Pago de Carraovejas winery and the project LOWPHWINE, reference IDI-20210391.

References:

1)  Carro-Huerga. et al. (2023) Vineyard Management and Physicochemical Parameters of Soil Affect Native Trichoderma Populations, Sources of Biocontrol Agents against Phaeoacremonium minimum. Plants 202312(4), 887, https://doi.org/10.3390/plants12040887

DOI:

Publication date: October 9, 2023

Issue: ICGWS 2023

Type: Poster

Authors

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

1Grupo de Investigación de Ingeniería y Agricultura Sostenible. 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, Avenida Astorga s/n, 24400 Ponferrada, Spain

Contact the author*

Keywords

soil, biological control agent, in vitro assays

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Preliminary results of water status and metabolite content of three new crossbreed winegrape genotypes

This study presents the preliminary results obtained in 2022, of the evaluation of three new crossbreed winegrape genotypes and their parental varieties, grown under controlled irrigation (60% ETc) and rainfed conditions in a wine-growing area with scarcity of water and high temperatures (Murcia, southeast Spain). The genotypes MC16 and MC80 were obtained from crosses between the varieties ‘Monastrell’ and ‘Cabernet Sauvignon’, and MS104 from crosses between ‘Monastrell’ and ‘Syrah’ [1]. The objective of this study was to analyse the physiological response and vegetative development of the 6 genotypes under the two irrigation conditions, and to study their effect on the content of soluble sugars and chlorophyll in the leaf.

The colour pattern of flower arrangements influence wine tasters’ sensory description

The arrangements of flowers and wine counterparts are inextricably linked. Whether a fundamental aspect of tablescaping or acolytes to broader entertainment rituals, they have an entangled history since ancient times. The aim of this contribution is to verify the influence of visually delicate and robust flower arrangements on individual description of wines. Changes in the sensory description of wines were investigated during subjects’ (thirty-two participants) exposure to three different conditions: the presence of delicate, robust, or totally absent flower arrangements.

Agronomic behavior of three grape varieties in different planting density and irrigation treatments

In the O Ribeiro Denomination of Origin, there is a winemaking tradition of growing vines under a high-density plantation framework (8,920 vines/ha) and maintaining its vegetative cycle under rainfed conditions.
Currently, viticulture is advancing to plantation frames in which the density is considered medium (5,555 vines/ha), thus allowing mechanized work to be carried out for vineyard management operations. Although, the application of irrigation applied proportionally to the needs of the vegetative cycle of the vine, is a factor that increasingly helps a good development of the vine compared to the summer period, with increasingly uncertain weather forecasts.

The potential of some native varieties of Argentina for the production of sparkling wines. Effect of lees contact time 

Grapevine varieties from South-America, commonly known as criollas, originated because of the natural crossbreeding of grapevine varieties brought by the Spaniards. The objective of this work was to evaluate the potential of some varieties to produce sparkling wines considering the effect of lees contact time. The following varieties were used: Moscatel Rosado, Criolla Chica, Pedro Gimenez, Blanca Oval, Canelón, and the European variety Chardonnay (control), planted in the ampelographic collection of EEA Mendoza INTA (Argentina). Pilot-scale vinifications were carried out to obtain the base wines, in 20 L glass containers. The second fermentation was performed through the traditional method.

Overall conceptual characterization of aged dry white wines using a mental descriptive questionnaire

The purpose of the present study was to understand the overall concept of an aged dry white wine using a descriptive mental questionnaire. A total of 680 worldwide participants, grouped according to their involvement in the wine business, replied to an online questionnaire to characterize the sensory analytical and synthetic descriptors of an aged dry white wine. The descriptors were selected using a Check-All-That-Apply (CATA) approach concerning wine colour, aroma, taste, mouthfeel, and global appreciation.