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…

Impact of climate on berry weight dynamics of a wide range of Vitis vinifera cultivars 

In order to study the impact of climate change on Bordeaux grape varieties and to assess the behavior of candidate grape varieties potentially better adapted to the new climatic conditions, an experimental vineyard composed of 52 grape varieties was planted in 2009 at the INRAE Bordeaux Aquitaine center[1]. Among the many parameters studied since 2012, berry weight for each variety was measured weekly from mid-veraison to maturity, with four independent replicates. The kinetics obtained allowed to study berry growth, a key parameter in grape composition and yield.

Read More

Rootstock regulation of scion phenotypes: the relationship between rootstock parentage and petiole mineral concentration

Rootstocks not only provide tolerance to Phylloxera, but also ensure the supply of water and mineral nutrients to the whole plant. Rootstocks are an important way of adapting to environmental conditions while conserving the typical features of scion varieties. We can exploit the large diversity of rootstocks used worldwide to aid this adaptation. The aim of this study was to characterise rootstock regulation of scion mineral status and its relation with scion development.

Read More

Sparkling wines and atypical aging: investigating the risk of refermentation

Sparkling wine (SW) production entails a two-steps process where grape must undergoes a primary fermentation to produce a base wine (BW) which is then refermented to become a SW. This process allows for the development of a new physicochemical profile characterized by the presence of foam and a different organoleptic profile.

Read More

White grape must processed by UHPH as an alternative to SO2 addition: Effect on the phenolic composition in three varieties

The quantity and distribution of polyphenols in musts play a fundamental role in the white winemaking. This is because these substances are exposed to oxidation reactions, which are catalysed by the polyphenol oxidase (PPO), leading to a decrease in the quality of the wines produced. PPO is inactivated by SO2, but currently, due to the restrictions of the legislation, other methodologies are being investigated. Ultra-High Pressure Homogenization (UHPH) is a non-thermal physic technology that exerts an ultrahigh pressure pumping (>200 MPa) of a fluid through a valve in a continuous system.

Read More

Influence of irrigation frequency on berry phenolic composition of red grape varieties cultivated in four spanish wine-growing regions

The global warming phenomenon involves the frequency of extreme meteorological events accompanied by a change in rainfall distribution. Irrigation frequency (IF) affects the spatial and temporal soil water distribution but its effects on the phenolic composition of the grape have been scarcely studied. The aim of this work was to evaluate the effects of four deficit irrigation frequencies of 30 % ETo: one irrigation per day (T01), two irrigations per week (T03), one irrigation per week (T07) and one irrigation every two weeks (T15) on berry phenolic composition at harvest.

Read More