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…

Genetic identification of 200-year-old Serbian grapevine herbarium

Botanist Andreas Raphael Wolny collected a grapevine herbarium from 1812-1824 in Sremski Karlovci (wine region of Vojvodina, Serbia), which represents local cultivated grapevine diversity before the introduction of grape phylloxera in the region. The herbarium comprises over 100 samples organized into two subcollections based on berry colour (red and white varieties), totaling 47 different grape varieties. The objective of this study was to investigate the historical varietal assortment of Balkan and Pannonian winegrowing areas with long viticulture traditions.

Read More

Predicting provenance and grapevine cultivar implementing machine learning on vineyard soil microbiome data: implications in grapevine breeding

The plant rhizosphere microbial communities are an essential component of plant microbiota, which is crucial for sustaining the production of healthy crops. The main drivers of the composition of such communities are the growing environment and the planted genotype. Recent viticulture studies focus on understanding the effects of these factors on soil microbial composition since microbial biodiversity is an important determinant of plant phenotype, and of wine’s organoleptic properties. Microbial biodiversity of different wine regions, for instance, is an important determinant of wine terroir.

Read More

Advancing grapevine science through genomic research

The seminar will examine the complexities and prospects of genomic research on Vitis species, characterize by exceptionally high heterozygosity and common interspecific gene flow. The seminar will showcase case studies highlighting the critical role of diploid genome references in grape research, specifically in areas such as aroma development, disease resistance, and domestication traits. It will also address the emerging focus on pangenomes within the Vitis genus, particularly in the context of genetic studies on naturally interbreeding populations.

Read More

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.

Read More

Exploring relationships among grapevine chemical and physiological parameters and mycobiome composition under drought stress

Improving our knowledge on biotic and abiotic factors that influence the composition of the grapevine mycobiome is of great agricultural significance, due to potential effects on plant health, productivity, and wine characteristics. Among the various environmental factors affecting the morphological, physiological, biochemical and molecular attributes of grapevine, drought stress is one of the most severe, becoming increasingly an issue worldwide.

Read More