A5029977687- Forest Insect Ecology and Management
- Plant Pathogens and Fungal Diseases
- Mycorrhizal Fungi and Plant Interactions
- Forest Ecology and Biodiversity Studies
- Plant Virus Research Studies
- Plant and Fungal Interactions Research
- Lichen and fungal ecology
- Forest Management and Policy
- Diverse Musicological Studies
- Gait Recognition and Analysis
- Noise Effects and Management
- Plant Pathogens and Resistance
- Bioenergy crop production and management
- Yeasts and Rust Fungi Studies
Estonian University of Life Sciences
2013-2023
Natural Resources Institute Finland
2020-2022
Abstract The nuclear ribosomal internal transcribed spacer ( ITS ) region is the formal fungal barcode and in most cases marker of choice for exploration diversity environmental samples. Two problems are particularly acute pursuit satisfactory taxonomic assignment newly generated sequences: (i) lack an inclusive, reliable public reference data set (ii) means to refer species, which no Latin name available a standardized stable way. Here, we report on progress these regards through further...
Soil microbiome has a pivotal role in ecosystem functioning, yet little is known about its build-up from local to regional scales. In multi-year regional-scale survey involving 1251 plots and long-read third-generation sequencing, we found that soil pH the strongest effect on diversity of fungi multiple taxonomic functional groups. The effects were typically unimodal, usually both direct indirect through tree species, nutrients or mold abundance. Individual particularly Pinus sylvestris,...
Pines are major components of native forests and plantations in Europe, where they have both economic significance an important ecological role. Diseases pines mainly caused by fungal oomycete pathogens, can significantly reduce the survival, vigor, yield individual trees entire stands or plantations. Pine pitch canker (PPC), Fusarium circinatum (Nirenberg O’Donnell), is among most devastating pine diseases world, example emergent invasive disease Europe. The effects microbial interactions...
Dieback of European ash was first observed in Europe the early 1990s. The disease is caused by invasive ascomycete Hymenoscyphus fraxineus, proposed to originate from Far East Asia, where it has been considered a harmless saprotroph. This study investigates occurrence H. fraxineus tissues local species Russian East, and assesses its population‐specific genetic variation ITS sequencing. Shoot dieback symptoms, characteristic infection on ash, were common, but not abundant, Fraxinus...
The number of invasive alien pest and pathogen species affecting ecosystem functioning, human health economies has increased dramatically over the last decades. Discoveries pests pathogens previously unknown to science or with host associations yet damaging on novel hosts highlights necessity developing tools predict their appearance in hitherto naïve environments. use sentinel plant systems is a promising tool improve detection before introduction provide valuable information for...
We studied long-term effects of forest fires on the dynamics soil fungal community along a post-fire chronosequence in hemiboreal Scots pine stands north-western Estonia. Effects fire and fungi were six sites that differed time since (10, 21, 36, 67, 78 181 years ago), without further management interventions. Soil communities dominated by saprotrophs ectomycorrhizal (EcM) fungi. Across chronosequence, most dominant phylum was Ascomycota. The abundant OTUs identified as Umbelopsis sp.,...
Coniferous forests, especially Norway spruce (Picea abies L.) stands, are threatened by root rot disease caused Heterobasidion annosum sensu lato (Fr.) Bref. The basidiomycetous fungus, Phlebiopsis gigantea Donk, is used as a biocontrol agent against this pathogen in several countries. In Estonia, stump treatments currently conducted using the Rotstop preparation, which consists of P. strain isolated Finland. However, for ecological reasons it would be preferable to use an indigenous strain....
Abstract D iplodia sapinea , an important pathogen of various conifer species, was recently recorded in the northern B altic region. The can disperse over short distances via rain or wind, whereas long range dispersal occurs movement contaminated plant material and seeds by humans, as well insects. H ylobius abietis is one most forest pests large areas E urope. Adult weevils feed on bark seedlings young conifers, causing injury often death. Weevils were collected from fresh clear‐cut near...
Summary Heterobasidion annosum (Fr.) Bref. sensu lato is an important fungal parasite of coniferous trees throughout the temperate regions world. Approximately 15% isolates are infected by ds RNA viruses, which considered as obligately intracellular and transmit vertically into both basidiospores asexual conidia. Insects such H. abietis its larvae feeding on wood colonized fungi may carry conidia hyphae. In this study, we used a model species to reveal whether viruses resist in their host...
Phlebiopsis gigantea (Fr.) Jül. is one of the most common fungal species in coniferous forests and commonly used as a biological control agent to prevent aerial infections conifers by Heterobasidion fungi. We feeding experiments examine whether Hylobius abietis L. (Coleoptera: Curculionidae) could serve vector for P. associated viruses disseminating fungus its faecal pellets. Two different strains were experiments: virus-free Rotsop biocontrol strain 93073 infected with virus PgLV-1. The...
Pine pitch canker (PPC), caused by the pathogenic fungus Fusarium circinatum (Nirenberg and O’ Donnell), is a serious threat to pine forests globally. The recent introduction of pathogen Southern Europe its spread in Mediterranean region alarming considering immense ecological economic importance pines region. Pines nurseries can be infected, resulting severe growth losses mortality. known plants for planting seeds, results from studies have indicated that F. may also through phoretic...
Abstract During the last decades, several new and invasive tree pathogens have arrived in northern Europe, damaging forest verdant trees. New species (e.g. Lecanosticta acicola , Dothistroma septosporum, Diplodia sapinea Hymenoscyphus fraxineus ) are considered to cause economic loss be an important threat biodiversity. Once alien entered into ecosystem, then it is very difficult eliminate them. Therefore, discover from forests imported plant material as early possible. For that reason,...