EMU DSpace
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 (MII)
- Institute of Agricultural and Environmental Sciences (PKI)
- Institute of Veterinary Medicine and Animal Sciences (VLI)
- Publications
- Units
Hiljutised sisestused
Spread, impact, and origin of Diplodia sapinea in the world and in Estonia
(Estonian University of Life Sciences, 2026) Hiiemäe, Karl-Markkus; Vester, Marili (advisor); Drenkhan, Rein (advisor)
Emerging and invasive pathogens pose a growing threat to tree nurseries and forests, a risk
that is intensified by rapid climate change. The focus of my PhD thesis is Diplodia sapinea,
the causal agent of Diplodia tip blight, which recently, since the beginning of the 21st century,
has become an emerging pathogen in Northern Europe. The fungus’ universal lifestyle
encompasses endophytic, saprotrophic, and pathogenic stages. the fungus can infect roots,
stem, wood, shoots, needles, cones, and seeds regardless of host age, making the fungus
exceptionally versatile in general and dangerous during epidemics. Therefore, one of the aims
of my PhD thesis is to analyze the relationships between spore dissemination and weather
factors like temperature, rainfall, air humidity, and wind. This information will be beneficial
for nurseries to apply prophylactic fungicides more efficiently, and together with systematic
preliminary surveys allows for evaluating the potential risk of disease spread.
Another key factor in protecting pines in nurseries and forest stands is to focus on the
genetics of host and the pathogen. Thus, my PhD thesis aims to perform a population genetic
analysis using various D. sapinea populations from across the world, including not yet
analyzed population from Asia. This will help determine the potential origin and pathways of
spread of D. sapinea, as well as identify pathogen genotypes with higher virulence. I believe
this course will be very beneficial in laying a solid foundation for this topic of my thesis. In
addition, my PhD thesis aims to analyze the occurrence and extent of damage by D. sapinea
in young pine stands using long-term survey data across Estonia as well as analyze the pines
genotypic resistance against the fungus based on survey data collected since 2021 from
progeny trial areas in Estonia.
Inoculation success of Inonotus obliquus in birch and alder sites in Estonia
(Estonian University of Life Sciences, 2026) Karin, Kütt; Adamson, Kalev (advisor); Drenkhan, Rein (advisor)
Inonotus obliquus (Ach. ex Pers.) Pilát (commonly known as Chaga) is a medicinal fungus traditionally harvested from birch trees. Artificial cultivation is increasingly considered due to a rising commercial demand. However, our knowledge remains limited regarding infection dynamics and conk development on different host species. We assessed the success of I. obliquus inoculation in Betula pendula, B. pubescens, Alnus incana, and A. glutinosa stands two years after inoculation in order to: (i) identify the most susceptible host tree species and the most effective I. obliquus strains for cultivation; (ii) assess the frequency of conk formation under hemiboreal conditions; (iii) investigate whether visible symptoms on stems resulted from I. obliquus infection; and (iv) determine whether mechanical wounding influenced fungal establishment. The experiment was conducted at two locations in Estonia, encompassing a total of six forest sites, with inoculation success assessed using species-specific qPCR. Sterile conk development was additionally monitored visually four years post-inoculation. Inoculation success differed between the two locations, with an infection rate of 18% observed at Järvselja and 3% at Võrumaa. Three fungal strains consistently achieved higher infection rates among the six tested ones. Conks developed only on A. glutinosa trees and with specific strains. Only the identity of the fungal strains resulted in a significant effect on infection success. Visible stem symptoms, such as bleeding and bulging, were unreliable indicators of the infection rate. Inonotus obliquus conks developed more rapidly on A. glutinosa compared to B. pendula, B. pubescens, and A. incana. Moreover, fungal strains play a crucial role in determining cultivation success.
TÜ teadusandmete repositooriumi DATADOI üleviimine Dataverse’i platvormile
(Eesti Maaülikool, 2026) Ivask-Oprelianska, Merilen; DataCite Eesti konsortsium
Eesti Maaülikooli aulas 10. juunil 2026. a toimunud DataCite Eesti konsortsium avatud teaduse seminari „Kui andmed hakkavad elama: teadusandmete haldamine ja koostöö Eestis“ ettekanne.
Andmehalduskultuuri kaardistamise teel.. Kuidas küsida küsimusi?
(Eesti Maaülikool, 2026) Pook, Martin; DataCite Eesti konsortsium
Eesti Maaülikooli aulas 10. juunil 2026. a toimunud DataCite Eesti konsortsium avatud teaduse seminari „Kui andmed hakkavad elama: teadusandmete haldamine ja koostöö Eestis“ ettekanne.
Tartu Ülikooli andmehalduse ja avatud teaduse nõustajate võrgustiku pilootprojekt
(Eesti Maaülikool, 2026) Lembinen, Liisi; DataCite Eesti konsortsium
Eesti Maaülikooli aulas 10. juunil 2026. a toimunud DataCite Eesti konsortsiumi avatud teaduse seminari „Kui andmed hakkavad elama: teadusandmete haldamine ja koostöö Eestis“ ettekanne.