Lise Nistrup Jørgensen

Lise Nistrup Jørgensen
Aarhus University | AU · Department of Agroecology

About

194
Publications
49,652
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3,098
Citations
Citations since 2016
85 Research Items
2247 Citations
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20162017201820192020202120220100200300400
20162017201820192020202120220100200300400
20162017201820192020202120220100200300400

Publications

Publications (194)
Article
Full-text available
Septoria tritici blotch (STB; Zymoseptoria tritici) is a severe leaf disease on wheat in Northern Europe. Fungicide resistance in the populations of Z. tritici is increasingly challenging future control options. Twenty-five field trials were carried out in nine countries across Europe from 2019 to 2021 to investigate the efficacy of specific DMI an...
Technical Report
Full-text available
The main questions of the project were (i) Can Septoria tritici blotch and Fusarium head blight i wheat be efficiently controlled by microbial biological control agents (BCAs) alone or combined with traditional chemical fungicides (ii) Can the development of fungicide resistance in the Zymoseptoria tritici pathogen population be reduced by the comb...
Article
The adaptive potential of plant fungal pathogens is largely governed by the gene content of a species, consisting of core and accessory genes across the pathogen isolate repertoire. To approximate the complete gene repertoire of a globally significant crop fungal pathogen, a pan genomic analysis was undertaken for Pyrenophora tritici-repentis (Ptr)...
Article
Full-text available
Validation of models for plant disease management is a crucial part in the development of decision support systems in plant protection. Bespoke field trials are usually conducted to determine the performance of a model under practical conditions. However, field trials are very resource-demanding, and the use of already existing field trial data cou...
Preprint
Full-text available
The adaptive potential of plant fungal pathogens is largely governed by the gene content of a species, comprised of core and ancillary genes across the pathogen isolate repertoire. To approximate the complete gene repertoire of a globally significant crop fungal pathogen, a pan genomic analysis was undertaken for Pyrenophora tritici-repentis (Ptr),...
Article
Full-text available
All plant tissues from leaves, stems, and roots are hosting a wide diversity of fungal species. Our understanding of the assembly of this diversity of fungi during the plant growth cycle is limited. Here, we characterized the mycobiome of three spring barley cultivars grown in Zealand, Denmark, at weekly intervals during a growth season from seedli...
Article
Septoria tritici blotch (STB) is among the most devastating diseases in European wheat production. In recent years, there has been increased interest in using cultivar mixtures as part of an integrated control strategy against diseases. This study investigated different cultivar mixtures for their ability to control STB across three years and at se...
Article
Full-text available
This paper presents and discusses the “PesticideLoadIndicator” package, a new R-package to compute potential environmental and health effects of pesticide applications using the Danish ‘Pesticide Load’ indicator. The implementation in the R Statistical Language makes it easy for researchers, practitioners and institutions to compare potential pesti...
Preprint
Full-text available
All plant tissues from leaves, stems and roots are hosting a wide diversity of fungal species. Our understanding of the assembly of this diversity of fungi during the plant growth cycle is limited. Here, we characterized the mycobiome of three spring barley cultivars at weekly intervals from seedling emergence to senescence and seed maturity. A not...
Article
Full-text available
Plant pathogens cause significant damage to plant products, compromising both quantities and quality. Even though many elements of agricultural practices are an integral part of reducing disease attacks, modern agriculture is still highly reliant on fungicides to guarantee high yields and product quality. The azoles, 14-alpha demethylase inhibitors...
Article
BACKGROUND Over the past decade, demethylation inhibitors (DMIs) and succinate dehydrogenase inhibitors (SDHIs) fungicides have been extensively used to control to septoria tritici blotch, caused by Zymoseptoria tritici on wheat. This has led to the development and selection of alterations in the target-site enzymes (CYP51 and SDH, respectively)....
Article
Full-text available
Septoria tritici blotch (STB) caused by the fungal pathogen Zymoseptoria tritici and powdery mildew (PM) caused by Blumeria graminis f.sp tritici (Bgt) are among the forefront foliar diseases of wheat that lead to a significant loss of grain yield and quality. Resistance breeding aimed at developing varieties with inherent resistance to STB and PM...
Article
Full-text available
Wheat (Triticum aestivum L.) yields are commonly affected by foliar infection by fungal pathogens. Of these, three wheat leaf blotch fungal diseases, septoria nodorum blotch (SNB), tan spot (TS) and septoria tritici blotch (STB), caused by Parastagonospora nodorum (Pn), Pyrenophora tritici-repentis (Ptr) and Zymoseptoria tritici (Zt), respectively,...
Article
Full-text available
Azole resistance is an emerging problem in patients with aspergillosis. The role of fungicides for resistance development and occurrence is not fully elucidated. EUCAST reference MICs of 17 fungicides (11 azoles and 6 others), five azole fungicide metabolites and four medical triazoles were examined against two reference and 28 clinical isolates of...
Article
The disease pressure from Pyrenophora teres, Rhynchosporium graminicola, and Ramularia collo–cygni varies widely between years and locations, which highlights the need for using risk models to avoid unnecessary use of fungicides. Three disease risk models were tested in thirty–three field trials during two seasons in five countries in order to valida...
Article
Full-text available
Wheat (Triticum aestivum L.) is one of the world’s staple food crops and one of the most devastating foliar diseases attacking wheat is powdery mildew (PM). In Denmark only a few specific fungicides are available for controlling PM and the use of resistant cultivars is often recommended. In this study, two Chinese wheat landraces and two synthetic...
Article
BACKGROUND Monitoring resistance to Plant Protection Products (PPPs) is crucial for understanding the evolution of resistances in bioagressors, thereby allowing scientists to design sound bioagressor management strategies. Globally, resistance monitoring is implemented by a wide range of actors that fall into three distinct categories: academic, go...
Book
Full-text available
Rapporten samler tilgængelig viden om dyrkningssystemet Conservation Agriculture (CA). Yderligere giver rapporten en oversigt over klima- og miljøeffekter ved CA med tydelig indikation af, i hvilken retning effekterne peger (positiv, negativ, eller neutral). Rapporten er udarbejdet på basis af en vidensyntese, som er udført med udgangspunkt i en ge...
Article
Full-text available
Detoxification of fusariotoxin is a type V Fusarium head blight (FHB) resistance and is considered a component of type II resistance, which is related to the spread of infection within spikes. Understanding this type of resistance is vital for FHB resistance, but to date, nothing is known about candidate genes that confer this resistance in rye due...
Article
The potential of cultivar mixtures to reduce disease severity and increase yields in cereals across the globe is well established. The effect of cultivar mixtures on the selection for pathogen strains resistant to specific fungicides has, however, not previously been investigated. In this study, the case of the pathogen Zymoseptoria tritici causing...
Article
Full-text available
Septoria tritici blotch (STB; Zymoseptoria tritici) is the most important leaf disease of wheat in Northern and Western Europe. The problem of fungicide resistance in Z. tritici populations is challenging future control options. In order to investigate differences in azole performances against STB, 55 field trials were carried out during four seaso...
Article
Full-text available
Rye is used as food, feed, and for bioenergy production and remain an essential grain crop for cool temperate zones in marginal soils. Ergot is known to cause severe problems in cross-pollinated rye by contamination of harvested grains. The molecular response of the underlying mechanisms of this disease is still poorly understood due to the complex...
Article
Demethylation inhibitor (DMI) and succinate dehydrogenase inhibitor (SDHI) fungicides are currently relied upon for the control septoria tritici blotch (STB) in European wheat fields. However, multiple mutations have occurred over time in the genes encoding the targeted proteins which have led to a practical loss of fungicide efficacies. Among the...
Article
Full-text available
Fungal plant diseases driven by weather factors are common in European wheat and barley crops. Among these, septoria tritici blotch (Zymoseptoria tritici), tan spot (Pyrenophora tritici-repentis), and stagonospora nodorum blotch (Parastagonospora nodorum) are common in the Nordic-Baltic region at variable incidence and severity both in spring and w...
Chapter
Septoria tritici blotch - STB (Zymoseptoria tritici) is the most serious leaf disease of wheat in Northem Europe. Problems with fungicide resistance in the populations of Z. tritici have caused concems for future control options. During two seasons (2017 and 2018), a common protocol was applied fortesting the field performance of six azoles across...
Article
Zymoseptoria tritici causes septoria tritici blotch (STB), the predominant fungal disease in wheat in Denmark and Sweden. Disease control is highly reliant on fungicides in the group of demethylation inhibitors (DMI). The use of DMIs has increased steadily since their introduction in the 1970s. Epoxiconazole and prothioconazole were the most widely...
Article
Full-text available
Risk models for decisions on fungicide use based on weather data, disease monitoring, and control thresholds are used as important elements in a sustainable cropping system. The need for control of leaf blotch diseases in wheat (caused by Zymoseptoria tritici, Parastagonospora nodorum and Pyrenophora tritici-repentis) vary significantly across year...
Book
Full-text available
This publication contains results from crop protection trials, which were carried out at the Department of Agroecology within the area of agricultural crops. Most of the results come from field trials, but results from greenhouse and semi-field trials are included. The report contains results that throw light upon: • Effects of new pesticides • Res...
Article
Wheat is the most commonly grown cereal crop in Europe and in major parts of Europe the most yield limiting disease is Septoria tritici blotch (STB) caused by Zymoseptoria tritici. Currently, the control of the disease depends on cultivar resistance and substantial input of fungicides. The impact of using mixtures of elite cultivars as an alternati...
Article
Full-text available
Contamination of ergot (Claviceps purpurea) in grains continues to be a problem in outcrossing plants like rye, especially in years of favorable infection (cold, rainy) conditions. The problem is not the yield loss, but the contamination of the grains by toxic alkaloids leading to strict critical values within the European Union. This study was con...
Article
Rust epidemics may have detrimental effects on seed yield in perennial ryegrass (Lolium perenne L.). Field trials comprising two cultivars of perennial ryegrass were established to evaluate the impact of stem rust (Puccinia graminis subsp. graminicola) and crown rust (Puccinia coronata f.sp. lolii) on seed yields. Two or three applications of a mix...
Article
Sugar beet (Beta vulgaris) is an important cash crop grown in temperate regions for the production of sugar. Fungal leaf diseases often infect the sugar beet crop during the season, causing significant yield reductions. This study aimed at investigating the effect of pre-symptomatic and well-timed fungicide treatments on disease control, yield, and...
Article
Full-text available
Fusarium head blight (FHB) is a devastating disease of wheat heads. It is caused by several species from the genus Fusarium. Several endophytic fungi also colonize wheat spikes asymptomatically. Pathogenic and commensal fungi share and compete for the same niche and thereby influence plant performance. Understanding the natural dynamics of the fung...
Article
Full-text available
Fusarium head blight (FHB) causes substantial losses of yield and quality in grains, both in the field and in post-harvest storage. To date, adequate natural genetic resistance is not available for the control of FHB. This study reports the cloning and overexpression of a barley (Hordeum vulgare L.) antifungal gene, nepenthesin 1 (HvNEP-1), in the...
Article
Powdery mildew (Blumeria graminis f.sp. tritici, f.sp. hordei, f.sp. avenae) is an important disease in cereal crops causing significant yield reductions, if not effectively controlled. The biofungicide Bacillus amyloliquefaciens (former subtilis) strain QST 713 suspension concentrate (Serenade®ASO) was investigated for its potential as a control a...
Article
Powdery mildew caused by Erysiphe betae is one of the major fungal diseases in sugar beet in Denmark and Sweden. Frequent applications of fungicides mitigate the risk of powdery mildew epidemics and, consequently, reduce yield losses conferred by the disease. So far, mixtures of quinone outside inhibitors (QoIs) and triazoles have provided good eff...
Preprint
Full-text available
Wheat is the most commonly grown cereal crop in Europe and in major parts the most yield limiting disease is Septoria tritici blotch (STB). Currently, the control of the disease depends on cultivar resistance and significant input of fungicides. The impact of using mixtures of elite cultivars as an alternative was investigated through a meta-analys...
Article
Pesticides are widely used in European crop production to stabilize yields and mitigate losses from weeds, diseases and insects. Detailed spray records reported per farm and crop have for the first time been collected and analyzed for a whole country, providing good and reliable information on specific spraying patterns in arable crops. Dividing fa...
Technical Report
Full-text available
This publication contains results from crop protection trials, which has been carried out or organized by the Dept. of Agroecology. The report include data from trials which throw light upon: Efficacy of new pesticides, results with different control strategies including both cultivars and other IPM elements, results with fungicide resistance and...
Article
Full-text available
Bread wheat (Triticum aestivum L.) is one of the world’s most important crop species. The development of new varieties resistant to multiple pathogens is an ongoing task in wheat breeding, especially in times of increasing demand for sustainable agricultural practices. Despite this, little is known about the relations between various fungal disease...
Article
Full-text available
Effects of fungicide treatments on non-target fungi in the phyllosphere are not well known. We studied community composition and dynamics of target (Puccinia striiformis) and non-target fungi in wheat that was heavily infected with yellow rust. Mycobiotas in bulk leaf samples and individual leaves were studied by metabarcoding targeting the interna...
Data
Read distribution and visual assessments. Read distribution normalized with total fungal DNA amount in each sample and visual assessments of disease severity (septoria tritici blotch, powdery mildew, tan spot and yellow rust measured as % leaf covered with symptoms. (XLSX)
Data
Rarefaction and species accumulation curves. Rarefaction curves for bulk (a) and single leaf (b) samples and species accumulation curves for bulk (c) and single leaf (d) samples; both based on fungicide treatment. Error bars indicate 95% confidence intervals. (TIF)
Data
Average yield and yield increases. Severity of symptoms of yellow rust and septoria tritici blotch in the different treatments. Average of three replicates. (XLSX)
Data
Fungal DNA of P. striiformis and Z. tritici (ng/μl) plotted against visual assessments (per cent leaf coverage). (TIF)
Data
Read distribution in the samples, and total fungal and P. striiformis DNA. E = early treatment GS 37; I = intermediate treatment GS 39; L = late treatment GS 51; L, S = split treatment GS 37 and 51. (XLSX)
Data
Response of OTU1-14 and P. striiformis to fungicide choice, timing and dose. ANOVA factorial analysis followed by post hoc analysis (LSD, Student-Newman-Keuls) of means of variance using ARM software (http://www.gdmdata.com/). (XLSX)
Article
Winter wheat is commonly attacked by a range of major leaf diseases like septoria tritici blotch (Zymoseptoria tritici) (STB), yellow rust (Puccinia striiformis) (YR) and powdery mildew (Blumeria graminis) (PM), which have significant negative impacts on yields. Fungicides can mitigate these yield reductions and stabilize yields, mainly by helping...
Article
Septoria tritici blotch (STB), caused by the ascomycete fungus Zymoseptoria tritici (formerly known as Mycosphaerella graminicola), is a devastating foliar disease causing major yield losses in wheat each year particularly in North-western Europe. Based on varieties ranked for susceptibility to STB in national trials, it was revealed that Danish Z....
Poster
Full-text available
Background Disease risk models based on climatic data as well as disease monitoring and control thresholds for decision on fungicide use are traditionally used as important IPM elements. The need to control Zymoseptoria tritici varies significantly between localities and years. The severity of septoria tritici blotch (STB) is mainly driven by preci...
Poster
Full-text available
In total 333 leaf samples, collected during 2015 - 2017 from North-western European countries showed, depending on region, distinct differences between the dominating necrotrophic pathogens both with respect to occurrence and severity. Using qPCR, Zymoseptoria tritici occurred in 87% of all samples while Parastagonospora nodorum and Pyrenophora tr...
Article
High disease pressure from beet rust (Uromyces beticola) has been registered in Denmark in recent years, increasing the need to manage this pathogen in accordance with principles of Integrated Pest Management (IPM). A revised disease cycle with all major steps has been proposed including spread of the disease by sea beets (Beta vulgaris subsp. mari...
Article
Septoria tritici blotch caused by the fungus Zymoseptoria tritici (formerly Mycosphaerella graminicola) is one of the most yield-reducing diseases worldwide. Effective disease management involves the use of resistant cultivars and application of fungicides. In this study, the population structure and genetic diversity of 183 Z. tritici isolates fro...
Book
Full-text available
The publication contains results from crop protection trials, which were carried out at the Dept. of Agroecology within the area of agricultural crops. Most results come from field trials, but also results from lab-testing and green house trials are included. The report contains results from testing of the efficacy of new pesticides, comparison of...
Article
Full-text available
Baltic Sea is one of the largest brackish water bodies in the world. Eutrophication is a major concern in the Baltic Sea due to the leakage of nutrients to the sea with agriculture being the primary source. Wheat (Triticum aestivum L.) is the most widely grown crop in the countries surrounding the Baltic Sea and thus promoting sustainable agricultu...
Article
Leaf diseases cause major yield losses in winter wheat every year across Europe. Septoria leaf blotch – STB (Zymoseptoria tritici) is the most serious leaf disease in Northern Europe, but also yellow rust (Puccinia striiformis) and brown rust (Puccinia triticina) are known to cause major problems in some regions and seasons. Problems with fungicide...
Presentation
Stabiliteten af sorter over år og lokaliteter baseret på data fra Observationsparcellerne.
Article
Pesticides provide growers with an effective tool for the control of damaging crop pests preventing yield losses that could jeopardise food security. In recent years the potentially adverse effects of their use on human health and the environment has received increasing attention by the public and the competent authorities. In this context reliable...
Chapter
Often the fungicide rates that European farmers apply are lower than the labelled rates. The use of ‘adjusted appropriate rates’ is mainly driven by results from field trials showing sufficient control and better net yield responses compared to full rates. The optimal rate depends on several f