A5102761163- Plant Pathogens and Fungal Diseases
- Plant Pathogens and Resistance
- Mycorrhizal Fungi and Plant Interactions
- Lichen and fungal ecology
- Yeasts and Rust Fungi Studies
- Botany and Plant Ecology Studies
- Forest Insect Ecology and Management
- Forest Ecology and Biodiversity Studies
- Ecology and Vegetation Dynamics Studies
- Microbial Community Ecology and Physiology
- Plant Parasitism and Resistance
- Plant Disease Resistance and Genetics
- Protist diversity and phylogeny
- Nematode management and characterization studies
- Forest ecology and management
- Tree Root and Stability Studies
- Plant-Microbe Interactions and Immunity
- Peatlands and Wetlands Ecology
- Plant Water Relations and Carbon Dynamics
- Fern and Epiphyte Biology
- Plant and Fungal Interactions Research
- Forest Management and Policy
- Plant and fungal interactions
- Genomics and Phylogenetic Studies
- Indoor Air Quality and Microbial Exposure
Swedish University of Agricultural Sciences
2015-2024
Science for Life Laboratory
2022-2024
Uppsala University
2024
Université de Montréal
2023
Campbell Collaboration
2018
Abstract Climate shapes the distribution of plant-associated microbes such as mycorrhizal and endophytic fungi. However, role climate in plant pathogen community assembly is less understood. Here, we explored Phytophthora communities at >250 sites along a latitudinal gradient from Spain to northern Sweden an altitudinal Spanish Pyrenees lowland areas. Communities were detected by ITS sequencing river filtrates. Mediation analysis supported biogeography ruled out other environmental...
During the last century, number of forest pathogen invasions has increased substantially. Environmental variables can play a crucial role in determining establishment invasive species. The objective present work was to determine correlation between winter climatic conditions and distribution two subspecies Phytophthora alni: P. alni subspp. uniformis killing black alder (Alnus glutinosa) southern Sweden. It is known from laboratory experiments that subsp. more pathogenic than uniformis,...
Phytophthora pseudosyringae is a self-fertile pathogen of woody plants, particularly associated with tree species from the genera Fagus, Notholithocarpus, Nothofagus and Quercus, which found across Europe in parts North America Chile. It can behave as soil infecting roots stem collar region, well an aerial leaves, twigs barks, causing particular damage United Kingdom western America. The population structure, migration potential outcrossing worldwide collection isolates were investigated...
Abstract Invasive forest pathogens of the genus Phytophthora are threatening ecosystems globally. species mainly introduced by humans importing infected nursery stock. However, due to presence environmental filters, not all Phytophthoras manage establish and spread. Phytophthoras’ ability overcome these filters may be linked functional traits. In northern Europe, increasing number reports calls for a better understanding invasion process prevent future outbreaks. We hypothesized that...
Forest dieback and mortality events induced by drought stress are widely reported. However, few studies have jointly examined the role played on growth in tree species inhabiting floodplain forests. Here, we focused occurring since early 2000s large areas a forest located within Ticino regional park Northwest Italy, where affected native (pedunculate oak, Quercus robur L.) introduced (black locust, Robinia pseudoacacia coexist. We related with climate data severity to discern if these were...
Abstract The role of competitive interactions among endophytes and latent pathogens that determine disease on stressed plants is largely unknown. Shoot blight caused by Diplodia sapinea an emerging affecting pine forests in Europe. D. endophyte becomes pathogenic following drought or hail. Disease expression depends the availability nutrient‐rich metabolites produced trees to alleviate stress. We studied whether competition for these compounds with other could modulate symptom expression....
Predicting fungal community assembly is partly limited by our understanding of the factors driving composition deposited spores. We studied relative contribution vegetation, geographical distance, seasonality and weather to spore deposition across three vegetation types. Active passive traps were established in agricultural fields, deciduous forests coniferous a geographic gradient ∼600 km. captured suspended air, reflecting potential deposition, whereas reflected realized deposition. Fungal...
Abstract The genus Phytophthora comprises many economically and ecologically important plant pathogens. Hybrid species have previously been identified in at least six of the 12 phylogenetic clades. These hybrids can potentially infect a wider host range display enhanced vigour compared to their progenitors. therefore pose serious threat agriculture as well natural ecosystems. Early correct identification is essential for adequate protection but this hampered by limitations morphological...
Diversity of microbial organisms is linked to global climatic gradients. The genus Phytophthora includes both aquatic and terrestrial plant pathogenic species that display a large variation functional traits. extent which the physical environment (water or soil) modulates interaction microorganisms with climate unknown. Here, we explored main environmental drivers diversity trait composition communities. Communities were obtained by novel metabarcoding setup based on PacBio sequencing river...
During extensive surveys of global
Abstract Plant–microbial interactions in soils are considered to play a central role regulating biodiversity many global ecosystems. However, studies on plant–soil feedbacks (PSFs) and how these affect forest stand patterns boreal regions rare. We conducted fully reciprocal PSF glasshouse experiment using four tree species. Alnus glutinosa , Betula pendula Picea abies Pinus sylvestris seedlings were grown under controlled conditions sterilised soil with or without inoculum collected mature...
Summary The factors shaping the composition of tree mycobiome are still under investigation. We tested effects host genotype, site, phenotypic traits, and air fungal spore communities on assembly fungi inhabiting Norway spruce needles. used clones traps within collection sites characterized both needle by high‐throughput sequencing ITS2 region. differed between clones, with high genetic similarity had a more similar mycobiome. also varied across was associated local climate. Phenotypic...
Halophytophthora species have been traditionally regarded as brackish water oomycetes; however, recent reports in inland freshwater call for a better understanding of their ecology and possible pathogenicity. We studied the distribution fluviatilis 117 forest streams by metabarcoding river filtrates taken spring autumn direct isolation from floating leaves. Pathogenicity on six Fagaceae Alnus glutinosa was assessed stem inoculations. The H. correlated with high mean annual temperatures...
In pathogenic fungi and oomycetes, interspecific hybridization may lead to the formation of new species having a greater impact on natural ecosystems than parental species. From early 1990s, severe alder (Alnus spp.) decline due an unknown Phytophthora was observed in several European countries. Genetic analyses revealed that disease caused by triploid hybrid P. × alni, which originated Europe from uniformis multiformis. Here, we investigated population structure alni (158 isolates) (85...
Predicting whether naïve tree populations have the potential to adapt exotic pathogens is necessary owing increasing rate of invasions. Adaptation may occur as a result natural selection when heritable variation in terms susceptibility exists population. We searched for signs on black alder (Alnus glutinosa) stands growing riverbanks invaded by two differing aggressiveness, namely, Phytophthora uniformis (PU) and × alni (PA). compared survival heritability measures from 72 families...
This study aimed to determine the differences and drivers of oomycete diversity community composition in alder- birch-dominated park natural forest soils Fennoscandian Baltic countries Estonia, Finland, Lithuania, Norway, Sweden. For this, we sequenced libraries PCR products generated from DNA 111 soil samples collected across a climate gradient using oomycete-specific primers on PacBio high-throughput sequencing platform. We found that communities are most affected by temperature...
Abstract Fungi are essential components in a wide range of ecosystems and while major efforts have been spent on disentangling the diversity functional roles fungi terrestrial environments, our knowledge about aquatic is lagging. To address this gap, we explored metagenomes from 25 lakes arctic boreal zone one tropical reservoir with aim describing community structure fungi-like organisms (Oomycota). A second objective was to identify possible environmental factors influencing composition...
Abstract Phylogenetic conservatism of microbial traits has paved the way for phylogeny-based predictions, allowing us to move from descriptive predictive functional ecology. Here, we applied phylogenetic eigenvector mapping, an approach not previously used microorganisms, predict key ammonia-oxidizing archaea (AOA), which are important players in nitrogen cycling. Using 168 nearly complete AOA genomes and metagenome assembled public databases, predicted distribution 18 ecologically relevant...