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Molecular determinants underlying non-host resistance to devastating fungal diseases of cereal plants

Project description

Innovative strategy for sustainable crop protection

Plant diseases caused by pathogens severely threaten global food security. At the same time, chemical control is harmful to the environment. Many plants are naturally immune to pathogens that infect other species, a phenomenon known as non-host resistance. Wheat, for example, shows durable resistance to the barley powdery-mildew fungus. The ERC-funded noDisease project aims to investigate the molecular basis of such resistance and exploit it for crop protection. To identify key non-host resistance genes and transfer them between species, researchers will use innovative molecular and biochemical approaches. The results will lead to the design of novel disease resistance interventions and transform agricultural systems.

Objective

Plant pathogens cause devastating diseases that result in yield reduction and substantial economic losses. Chemical control is often ineffective, costly, and raises ecological concerns. An alternative strategy for generating durable chemical-free disease resistance would have a considerable impact on food security.
Most plants species are naturally resistant against various pathogens species. This phenomenon is referred to as non-host resistance (NHR). For example, wheat has durable NHR to the powdery mildew fungus Blumeria hordei (Bh) that normally infects susceptible barley. Employment of NHR genes in susceptible host plants has the exciting potential to provide durable pathogen resistance. Yet, the understanding of molecular NHR mechanisms is limited and the isolation of NHR genes using conventional approaches is restricted by genetic incompatibilities between host and non-host species. Given the growing importance of crop diseases, addressing this critical knowledge gap is both ground-breaking and timely, contributing to food security and promoting non-chemical pest resistance.

To bypass the bottlenecks common to standard procedures, 'noDisease' will use an innovative strategy, combining high-throughput molecular and biochemical methods whose developments I have pioneered to rapidly isolate the molecular factors underlying wheat NHR to Bh. This strategy will enable prediction of the most durable NHR genes for effective disease resistance. Specifically, our work plan includes the following aims:

I. Isolate the genetic determinants that underly NHR
II. Transfer NHR genes between plant species
III. Assess the potential for NHR genes to provide durable disease resistance.

This ambitious and timely approach employed within ‘noDisease’ will resolve long-standing bottlenecks that hinder molecular-genetic research on NHR, and has the potential to revolutionize both the basic understanding and deployment of non-chemical disease resistance in agriculture.

Fields of science (EuroSciVoc)

Keywords

Programme(s)

Topic(s)

Funding Scheme

HORIZON-ERC - HORIZON ERC Grants

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Call for proposal

(opens in new window) ERC-2025-STG

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Host institution

UNIVERSITAT ZU KOLN
Net EU contribution
€ 1 499 668,00
Address
ALBERTUS MAGNUS PLATZ
50931 Koln
Germany
Region
Nordrhein-Westfalen Köln Köln, Kreisfreie Stadt
Activity type
Higher or Secondary Education Establishments
Links
Total cost
€ 1 499 668,00

Beneficiaries (1)