EMU DSpace – Eesti Maaülikooli digitaalarhiiv
Digitaalarhiiv EMU DSpace kogub, säilitab ja loob ligipääsu Eesti Maaülikooli liikmeskonna poolt loodud või Eesti Maaülikooli vastutusvaldkondadega seotud teadustöödele toetamaks maaülikooli konkurentsivõimet ja teadmistepõhist ühiskonna arengut. Digitaalarhiivi haldab Eesti Maaülikooli raamatukogu.
Valdkonnad DSpace's
Valige valdkond, et selle kogusid sirvida.
- Institute of Forestry and Engineering (MMI)
- Institute of Agricultural and Environmental Sciences (PKI)
- Institute of Veterinary Medicine and Animal Sciences (VLI)
- Publications
- Units
Hiljutised sisestused
Proceedings of 2nd annual Baltic Society of Extracellular Vesicles conference 2023 : April 28-29, 2023
(Estonian University of Life Sciences, 2023) State Research Institute Centre for Innovative Medicine; Pilipenko, Vladimirs (editor); Midekessa, Getnet (editor); Pivoriunas, Augustas (editor); Fazeli, Alireza (editor)
The Baltic Society of Extracellular Vesicles (BSEV) Conference is organized at the State Research Institute Centre for Innovative Medicine. BSEV has set an objective to bring prominent experts in the field to exchange the most recent knowledge in this growing field and advance research cooperation within Baltic states.
Phenotypic traits influencing changes in potato late blight pathogen Phytophthora infestans populations in Europe
(Estonian University of Life Sciences, 2025) Puidet, Britt; Mänd, Marika (advisor); Koppel, Mati (advisor); Kiiker, Riinu (advisor); Institute of Agricultural and Environmental Sciences; Andersson, Björn (opponent)
ABSTRACT. Potato late blight, caused by Phytophthora infestans, remains a substantial threat to global food security. European P. infestans populations are generally divided into Northern (genetically diverse) and Western (mainly clonal) populations. However, new genotypes have recently emerged and successfully established themselves in Northern Europe. Additionally, new strains that are more aggressive and more virulent or exhibit fungicide sensitivity to widely used active ingredients emerge frequently. The main objectives of this thesis were to study the drivers of new invasive lineages of P. infestans in Europe and the reason behind the shift in Northern European populations.
Samples were collected from potato plants from conventional production fields, organic fields and trap nurseries in Estonia, Denmark, Norway, the UK, and France in ten growing seasons (between 2005-¬2022). DNA acquired from all the samples was genotyped through simple sequence repeat analysis. Phenotypic experiments were performed for samples collected in 2016 and 2017 and involved testing the isolates’ fungicide sensitivity to active ingredients widely used in Europe and evaluating their virulence to assess the ability of P. infestans to damage potato plants. Various population genetic indices were calculated to characterise the genetic diversity and dynamics of the pathogen in Estonia.
Results showed that the Western European genotype EU_37_A2 exhibits fluazinam resistance, likely aiding its invasiveness. Genotype EU_41_A2 has successfully been established in Northern Europe, possibly due to higher virulence combined with other fitness traits or changes in environmental conditions not examined in this study. Substantial genetic and genotypic diversity persists in Estonia, suggesting a high likelihood of random mating. Still, monitoring results showed introductions of clonal lineages to the country, which creates a potential risk for future establishment. Our findings underscore the importance of continuous pathogen population monitoring to enable timely adjustments in control strategies.
In Memoriam. Rektor emeritus, president Arnold Rüütel (10.05.1928 - 31.12.2024)
(Eesti Maaülikool, 2025) Eesti Maaülikool
Eesti Maaülikooli mälestusraamat sisaldab järelhüüdeid president Arnold Rüütlile.
Oocyte recovery and maturation rates in Estonian Sport Horses : [presentation]
(Estonian University of Life Sciences, 2025) Tsopp, Elina; Viljaste-Seera, Anni; Gambini, Andres; Kavak, Ants; Reilent, Andres; Chair of Animal Breeding and Biotechnology, Estonian Univeristy of Life Sciences; Chair of Clinical Veterinary Medicine, Estonian University of Life Sciences; Chair of Veterinary Biomedicine and Food Hygiene, Estonian University of Life Sciences
Ovum pick-up (OPU) and intracytoplasmic sperm injection (ICSI) are rapidly gaining interest in the horse industry. The ability to preserve the genetics, efficiently use scarce or expensive semen, and produce embryos out of the breeding season from competing mares has proven attractive to sport horse breeders. Recently, our research group introduced the commercial equine in vitro embryo production system in Estonia, achieving the first commercial ICSI pregnancy. The Estonian Sport Horse breed is a mix of European warmbloods whose success in show jumping and dressage disciplines has gained international interest. Breed has been shown to significantly affect
the efficiency of an OPU-ICSI program (Fonte et al. 2024 Theriogenology 223, 47–52). Thus, the aim of our study was to to evaluate the effect of the seasonality on oocyte recovery rates and the effect of different oocyte holding media on maturation rates in ESH.
Investigating the Improvement of bull In vitro fertility through seminal plasma extracellular vesicles : [presentation]
(Estonian University of Life Sciences, 2025) Nõmm, Monika; Viljaste-Seera, Anni; Jaakma, Ülle; Chair of Animal Breeding and Biotechnology, Institute of Veterinary Medicine and Animal Sciences Estonian University of Life Sciences
Seminal plasma extracellular vesicles (EV) affect the biological function of sperm by enhancing their motility and fertilizing capability by transferring essential proteins, lipids, and RNAs, potentially affecting embryo development and offspring health. Using EVs derived from known high in vitro fertility (HF) bulls might allow for tailored IVF treatments to address specific fertility issues and improve success rates for known low in vitro fertility (LF) bulls.