A5054662781- Forest Insect Ecology and Management
- Plant Pathogens and Fungal Diseases
- Entomopathogenic Microorganisms in Pest Control
- Mycorrhizal Fungi and Plant Interactions
- Plant Pathogenic Bacteria Studies
- Plant Pathogens and Resistance
- Insect-Plant Interactions and Control
- Insect and Pesticide Research
- Yeasts and Rust Fungi Studies
- Plant-Microbe Interactions and Immunity
- Insect symbiosis and bacterial influences
- Fungal Biology and Applications
- Forest Ecology and Biodiversity Studies
- Hematological disorders and diagnostics
- Insect behavior and control techniques
- Orthoptera Research and Taxonomy
- Insect Pest Control Strategies
- Plant and animal studies
- Plant and Fungal Interactions Research
- Insect Resistance and Genetics
- Phytoplasmas and Hemiptera pathogens
- Species Distribution and Climate Change
- Insect and Arachnid Ecology and Behavior
- Powdery Mildew Fungal Diseases
- Scarabaeidae Beetle Taxonomy and Biogeography
Swiss Federal Institute for Forest, Snow and Landscape Research
2019-2024
ETH Zurich
2012-2016
University of Lausanne
2009
Biocontrol pseudomonads are most known to protect plants from fungal diseases and increase plant yield, while intriguing aspects on insecticidal activity have been discovered only recently. Here, we demonstrate that Fit toxin producing pseudomonads, in contrast a naturally Fit-deficient strain, exhibit potent oral against larvae of Spodoptera littoralis, Heliothis virescens Plutella xylostella, all major insect pests agricultural crops. Spraying leaves with suspensions containing 1000...
Root-colonizing fluorescent pseudomonads are known for their excellent abilities to protect plants against soil-borne fungal pathogens. Some of these bacteria produce an insecticidal toxin (Fit) suggesting that they may exploit insect hosts as a secondary niche. However, the ecological relevance toxicity and mechanisms driving evolution production remain puzzling.Screening large collection plant-associated activity presence Fit revealed is highly indicative predicts Pseudomonas protegens P....
Abstract Non-native pests, climate change, and their interactions are likely to alter relationships between trees tree-associated organisms with consequences for forest health. To understand predict such changes, factors structuring communities need be determined. Here, we analysed the data consisting of records insects fungi collected from dormant twigs 155 tree species at 51 botanical gardens or arboreta in 32 countries. Generalized dissimilarity models revealed similar relative importance...
Abstract Phytophthora species are a cause for concern due to their invasive potential and the damage they can in agriculture, forestry, natural ecosystems worldwide. Since water plays crucial role dispersal, stream river baiting is commonly used survey risk areas presence of quarantine species. However, our understanding distribution diversity European watercourses remains incomplete. This study investigated Swiss watercourses, with focus on highly urbanized Plateau. Over period 2012–2016,...
Ambrosia beetles are highly successful as invaders because they often transported internationally with wood packaging and other products their inbreeding mating systems facilitates establishment of invading populations. In 2022, two independent insect surveys in canton Ticino (southern Switzerland) revealed the widespread occurrence invasive ambrosia beetle Anisandrus maiche (Kurentzov, 1941) from southern to central-upper Ticino. This species is native east Asia has previously been found a...
In spring 2017, stem bleeds accompanied by necrosis of the inner bark and sapwood were reported on three trees Quercus petraea in region Basel, Switzerland. 2018 2019 same symptoms observed at seven other sites across country Q. cerris, pubescens, robur rubra (Figs. 1-2). Samples prepared from symptomatic lesions resulted abundant bacterial growth when plated nutrient agar. Colonies with different morphotypes assessed partial 16S rRNA gyrB gene sequencing (Lane et al., 5; Brady 1), available...
Emerging diseases caused by both native and exotic pathogens represent a main threat to forest ecosystems worldwide. The two invasive soilborne Phytophthora cinnamomi × cambivora are the causal agents of ink disease, which has been threatening Castanea sativa in Europe for several centuries seems be re-emerging recent years. Here, we investigated distribution, agents, infection dynamics disease southern Switzerland. A total 25 outbreaks were identified, 19 with only P. cinnamomi, 5...
ABSTRACT In the ecologically important arbuscular mycorrhizal fungi (AMF), Sod1 encodes a functional polypeptide that confers increased tolerance to oxidative stress and is upregulated inside roots during early steps of symbiosis with host plants. It still unclear whether its expression directed at scavenging reactive oxygen species (ROS) produced by host, if it plays role in fungus-host dialogue, or consequence from surrounding environment. All these possibilities are equally likely,...
Abstract In 2022, two independent insect surveys in canton Ticino (southern Switzerland) revealed the widespread occurrence of invasive ambrosia beetle Anisandrus maiche from southern to central-upper Ticino. This species is native east Asia and has previously been found as a non-native United States, Canada, western Russia, Ukraine and, 2021, northern Italy. Here, we present results several trapping studies using different trap types (bottle traps, funnel traps Polytrap intercept traps)...
Abstract International trade in plants and climate change are two of the main factors causing damaging tree pests (i.e. fungi insects) to spread into new areas. To mitigate these risks, a large-scale assessment tree-associated insects is needed. We present records endophytic twigs 17 angiosperm gymnosperm genera, from 51 locations 32 countries worldwide. Endophytic were characterized by high-throughput sequencing 352 samples 145 species 28 countries. Insects reared 227 109 18 sorted...
Identifying alien species is important to ensure the early detection of biological invasions and survey shifts in distributions context global change. Here, we report on three bark ambrosia beetles newly detected Switzerland: Cyclorhipidion distinguendum (Eggers, 1930), C. pelliculosum (Eichhoff, 1878), Hypothenemus eruditus (Westwood, 1834). These were recorded for first time during a comprehensive saproxylic accross major forest types along an altitudinal gradient entire growing season...
Abstract Decline diseases are typically caused by complex abiotic and biotic interactions characterized a suite of symptoms indicative low plant vigour. Diseased trees frequently infected Phytophthora, but the between pathogen, host heterogeneous forest environment mask comprehensive understanding aetiology. In present study, we surveyed European beech ( Fagus sylvatica ) stands in Swiss forests with recent increases bleeding lesions for presence Phytophthora . We used combined approach...
ABSTRACT Bacterial tree diseases have been mainly studied in agriculture and horticulture. For forest trees, damage due to bacterial is understudied. Moreover, often appear the context of so‐called complex diseases, which are dependent on other factors, such as multiple microorganisms, insects or abiotic factors weaken host. In recent years, outbreaks Xylella fastidiosa Mediterranean region acute oak decline (AOD) United Kingdom, raised awareness trees. this review, we aim summarise current...
The Japanese maples, Acer japonicum and A. palmatum, their cultivars are popular ornamental trees in Europe. powdery mildew, Sawadaea polyfida, occurs natively on these some other Asian maple species China, Japan, Korea (Hirose et al., 2005; Braun & Cook, 2012; Wan 2022), was introduced into Australia palmatum 2018 (Kiss 2020). pathogen previously unknown Europe, but tulasnei has been reported (Braun Ing, 1990; author's observation Geneva 2015). In October 2022, S. polyfida identified for...
Abstract Non-native pests, climate change, and their interactions are likely to alter relationships between trees tree-associated organisms with consequences for forest health. To understand predict such changes, factors structuring communities need be determined. Here, we analysed the data consisting of records insects fungi collected from dormant twigs 155 tree species at 51 botanical gardens or arboreta in 32 countries. Generalized dissimilarity models revealed similar relative importance...
Since 2015, North American Douglas fir needle midges of the genus Contarinia Rondani (Diptera: Cecidomyiidae) are known to spread across Europe.In 2022, these gall-inducing insects were detected for first time in Switzerland, where their morphological identification was confirmed by DNA barcoding.Conducting a visual monitoring stands northern current distribution range delimitated and revealed presence forest areas close borders France Germany, establishment has been reported earlier.Genetic...