Epidemiology and Management of Barley Pathogens
Summary
Barley is affected by a diverse array of fungal pathogens that can infect foliage, roots and grain, resulting in significant yield and quality losses worldwide. Key foliar diseases include powdery mildew, net blotch, Ramularia leaf spot and various rusts, while Fusarium head blight poses a serious threat to grain safety. Epidemiological studies reveal that disease outbreaks are driven by interactions among pathogen life cycles (for example overwintering on crop debris, latent endophytic stages and sporulation events), climatic factors such as humidity, temperature and rainfall, and agronomic practices including crop rotation, residue management and cultivar choice. Integrated management combines genetic resistance, cultural measures to reduce inoculum, timely application of fungicides and predictive forecasting based on spore dispersal and weather models. Recent advances in molecular diagnostics, host–pathogen interaction studies and resistance monitoring have improved our ability to anticipate and mitigate epidemics, while challenges persist in delaying fungicide resistance and adapting to climate variability.
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Epidemiology and Management of Barley Pathogens publication trend
The graph below shows the total number of articles in epidemiology and management of barley pathogens across all publications each year (not limited to Nature Index journals).
Technical terms
Hemibiotroph: A pathogen that initially colonises living host tissue asymptomatically and later switches to a destructive necrotrophic phase.
Endophyte: An organism that lives within plant tissues without causing immediate disease symptoms.
Latent phase: A period during which a pathogen is present in host tissue without visible disease symptoms.
Fungicide resistance: The inherited ability of a pathogen population to survive doses of fungicide that would normally inhibit its growth.
Inoculum: The biological material (for example spores or mycelium) capable of initiating an infection in a host plant.
References
- Integrative transcript to proteome analysis of barley during Ramularia collo-cygni leaf spot development identified several proteins that are related to fungal recognition and infection responses. Frontiers in Plant Science (2024).
- Spore dispersal patterns of the ascomycete fungus Ramulariacollo-cygni and their influence on disease epidemics. Aerobiologia (2023).
- Fungicide Resistance Evolving in Ramularia collo-cygni Population in Estonia. Microorganisms (2021).
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