Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2017
Authors
K.A.G Nielsen Ingerd Skow Hofgaard Shiori Koga H.U. Aamot Ulrike Böcker Erik Lysøe Guro Brodal Ruth Dill-Macky Anne Kjersti UhlenAbstract
No abstract has been registered
Authors
Isabella Børja Douglas L. Godbold Jan Světlík Nina Elisabeth Nagy Roman Gebauer Josef Urban Daniel Volařík Holger Lange Paal Krokene Petr Čermák Toril Drabløs EldhusetAbstract
Global warming will most likely lead to increased drought stress in forest trees. We wanted to describe the adaptive responses of fine roots and fungal hyphae, at different soil depths, in a Norway spruce stand to long-term drought stress induced by precipitation exclusion over two growing seasons. We used soil cores, minirhizotrons and nylon meshes to estimate growth, biomass and distribution of fine roots and fungal hyphae at different soil depths. In control plots fine roots proliferated in upper soil layers, whereas in drought plots there was no fine root growth in upper soil layers and roots mostly occupied deeper soil layers. Fungal hyphae followed the same pattern as fine roots, with the highest biomass in deeper soil layers in drought plots. We conclude that both fine roots and fungal hyphae respond to long-term drought stress by growing into deeper soil layers.
Abstract
Dieback of European ash (Fraxinus excelsior L.), a disease caused by the ascomycete Hymenoscyphus fraxineus (previously referred to as H. pseudoalbidus or Chalara fraxinea), was first observed in Poland in the early 1990ies, and is currently present almost throughout the entire distribution area of European ash. The characteristic symptoms of the disease include dead shoots with necrotic lesions in the bark and discoloration of xylem and pith but the seasonal dynamics of pathogen spread in shoot tissues remain poorly understood. To investigate whether the internal spread of the fungus involves season-specific patterns, saplings with necrotic bark lesions in 1-2 -year-old stem regions were collected during 2014-2015 at time intervals in spring, summer, autumn and winter at several localities in western Ukraine and at two localities in south-eastern Norway. Tissuespecific presence of H. fraxineus was determined by a highly sensitive quantitative real-time PCR assay that is specific to DNA of H. fraxineus. The relatively high proportion of bark samples positive for H. fraxineus in the saplings collected during spring provides support to a model that H. fraxineus can be a primary causative agent of bark lesions and that other fungi may eventually replace it in old infection areas.
Academic – Microalgal proteins for feed, food and health
M. Hayes, Hanne Skomedal, Kari Skjånes, ...
Authors
M. Hayes Hanne Skomedal Kari Skjånes H. Mazur-Marzec A. Torunska-Sitarz M. Catala M. Isleten Hosoglu M. García-VaqueroAbstract
No abstract has been registered
Abstract
No abstract has been registered
Authors
Nina Johansen Belachew Asalf Tadesse Aruppillai Suthaparan Arne Stensvand Pål Johan From David Gadoury Lars Grimstad Carl Emil ØyriAbstract
No abstract has been registered
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No abstract has been registered
Authors
Michelle T. Fountain Catherine Baroffio Anna-Karin Borg-Karlson Phil Brain Jerry V. Cross Dudley I. Farman David R. Hall Baiba Ralle Paolo Rendina Pauline Richoz Lene Sigsgaard Sverre Storberget Nina Trandem Atle WibeAbstract
Strawberry blossom weevil (SBW), Anthonomus rubi Herbst (Coleoptera: Curculionidae) and European tarnished plant bug (ETB), Lygus rugulipennis Poppius (Hetereoptera: Miridae), cause significant damage to strawberry and raspberry crops. Using the SBW aggregation pheromone and ETB sex pheromone we optimized and tested a single trap for both species. A series of field experiments in crops and seminatural habitats in five European countries tested capture of the target pests and the ability to avoid captures of beneficial arthropods. A Unitrap containing a trapping agent of water and detergent and with a cross vane was more efficient at capturing both species compared to traps which incorporated glue as a trapping agent. Adding a green cross vane deterred attraction of non-pest species such as bees, but did not compromise catches of the target pests. The trap caught higher numbers of ETB and SBW if deployed at ground level and although a cross vane was not important for catches of ETB it was needed for significant captures of SBW. The potential for mass trapping SBWand ETB simultaneously in soft fruit crops is discussed including potential improvements to make this more effective and economic to deploy.
Authors
Andre van Eerde Johanna Gottschamel Hege Særvold Steen Sissel Haugslien Anna-Marja Aura Stephanie Ruf Ralph Bock Jihong Liu ClarkeAbstract
No abstract has been registered
Authors
Andre van Eerde Yanliang Wang John-Kristian Jameson Lisa Paruch Aniko Varnai Hege Særvold Steen Vincentius Gerardus Henricus Eijsink Jihong Liu ClarkeAbstract
No abstract has been registered