terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Application of antagonistic Metschnikowia strains against Botrytis cinerea in vineyards 

Application of antagonistic Metschnikowia strains against Botrytis cinerea in vineyards 

Abstract

Less and less chemical plant protection products are approved by the E U. Plant pathogenic fungi become increasingly resistant to the active ingredients that have been around for a long time. Besides, there is a valid demand for effective products that can be applied in organic cultivation.

We examined Metschnikowia strains under laboratory conditions in order to find effective strains against B. cinerea. The antimicrobial mechanism of these yeasts is based on the competition for the ferric ions from the environment. Metschnikowia cells release the pulcherriminic acid which chelates with Fe3+, forming the pigment pulcherrimin. The ability of M. pulcherrima of depleting Fe from the growth media is correlated with it’s ability to inhibit the growth of many microorganism. We compared the strains’ ability to produce pulcherrimin and their ability to inhibit different pathogenic fungi in laboratory conditions. Pulcherrimin production was also reported in the case of other yeast species. Krause et al. (2018) described four genes (PUL1-4) forming a PULcherrimin (PUL) gene cluster present in Kluyveromyces. lactis, K. aestuarii, M. fructicola and Zygotorulaspora mraki. We have also identified the four PULgenes in our effective M. pulcherrima strains.

We conducted field studies in three vintages using a specific M. pulcherrima strains. Based on our results, we can state that we have found an effective method to protect grape against B cinerea, which can be applied both in organic cultivation and also before harvest in conventional technology.

Acknowledgements: The authors would like to thank Anita Kovács, Ilona Szilágyi and Szilvia Struba for the profession technical assistance. This research was financed by the grant 2020-1.1.2-PIACI-KFI-2020-00130

References:

1) Krause D.J., Kominek J., Opulente D.A., Shen X.X., Zhou X., Langdon Q.K., DeVirgiliof J., Hulfachora A.B., Kurtzmanf C.P., Hittinger C.T. 2018. Functional and evolutionary characterization of a secondary metabolite gene cluster in budding yeasts. Proc. Natl. Acad. Sci. 115, 11030-11035. DOI: 10.1073/pnas. 1806268115

DOI:

Publication date: October 6, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Zoltán Kállai1*, Kinga Czentye1, Matthias Sipiczki1

1Department of Genetics and Applied Microbiology, Faculty of Science and Technology, University of Debrecen, H-4032 Debrecen, Hungary

Contact the author*

Keywords

crop protection, bioprotection, antagonism, Metschnikowia, Botrytis cinerea 

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Assessing the Effectiveness of Electrodialysis in Controlling Brettanomyces Growth in Wine

Brettanomyces yeast can negatively impact the quality and stability of wines, posing a significant challenge to winemakers. [1] This study aims to develop novel management practices to limit Brettanomyces impact on wines by evaluating the effectiveness of electrodialysis (ED) technology in removing magnesium (Mg2+) from wine to prevent the development of Brettanomyces yeast. The ED technique utilizes charged membranes to extract ions from the wine, and it is considered an alternative to cold stabilization that requires less energy. [2]

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.

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.

Effects of long-term drought stress on soil microbial communities from a Syrah cultivar vineyard

Changes in the rainfall and temperature patterns affect the increase of drought periods becoming one of the major constraints to assure agricultural and crop resilience in the Mediterranean regions. Beside the adaptation of agricultural practices, also the microbial compartment associated to plants should be considered in the crop management. It is known that the microbial community change according to several factors such as soil composition, agricultural management system, plant variety and rootstock.

Metatranscriptomic analysis of “aszú” berries: the potential role of the most important species of the grape microbiota in the aroma of wines with noble rot

Botrytis cinerea has more than 1200 host plants and is one of the most important plant pathogens in viticulture. Under certain environmental conditions, it can lead to the development of a noble rot, which results in a specific metabolic profile, altering physical texture and chemical composition. The other microbes involved in this process and their functional genes are poorly characterised. We have generated metatranscriptomic [1,2] and DNA metabarcoding data from three months of the Furmint grape variety, representing the four phases of noble rot, from healthy berries to completely dried berries.