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.
2013
Authors
Randi Seljåsen Kjell gjermund Vogt Elisabeth Olsen Per Lea Lars Arne Høgetveit Torgeir Taje Richard Meadow Gunnar BengtssonAbstract
submittedVersion
Authors
Simon Ballance Stefan Sahlstrøm Per Lea Nina Elisabeth Nagy Petter V. Andersen Tzvetelin Dessev Sarah Hull Maria Vardakou Richard FaulksAbstract
This is a post-peer-review, pre-copyedit version of an article published in [European Journal of Nutrition]. The final authenticated version is available online at: https://doi.org/10.1007/s00394-012-0386-5
Authors
Lampros LamprinakisAbstract
Valio, a well-established "national institution" in Finland, had a rich background based on cooperative tradition and extensive regional spread. In the late 1980s and early 1990s, the company had to undergo a process of change and re-organization in order to address the challenges arising from the EU accession. After years of restructuring and changing in its business model, Valio remains a major player in Finland and one of the most well-known brands in the region. The purpose of this case study is to stimulate a critical evaluation of the processes Valio undertook in order to address the coming challenges. The case is especially suited as a starting point for a broader discussion on organizational change and adaptation. Teaching notes are provided with proposals and questions.
Abstract
No abstract has been registered
Authors
Ole Petter Laksforsmo Vindstad Tino Schott Snorre Hagen Jane Uhd Jepsen Lauri Teemu Kapari Rolf Anker ImsAbstract
No abstract has been registered
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No abstract has been registered
Authors
M Ashraful Islam Henrik Lütken Sissel Haugslien Dag-Ragnar Blystad Sissel Torre Jakub Rolcik Søren Rasmussen Jorunn Elisabeth Olsen Jihong Liu ClarkeAbstract
Euphorbia pulcherrima, poinsettia, is a non-food and non-feed vegetatively propagated ornamental plant. Appropriate plant height is one of the most important traits in poinsettia production and is commonly achieved by application of chemical growth retardants. To produce compact poinsettia plants with desirable height and reduce the utilization of growth retardants, the Arabidopsis SHORT INTERNODE (AtSHI) gene controlled by the cauliflower mosaic virus 35S promoter was introduced into poinsettia by Agrobacterium-mediated transformation. Three independent transgenic lines were produced and stable integration of transgene was verified by PCR and Southern blot analysis. Reduced plant height (21–52%) and internode lengths (31–49%) were obtained in the transgenic lines compared to control plants. This correlates positively with the AtSHI transcript levels, with the highest levels in the most dwarfed transgenic line (TL1). The indole-3-acetic acid (IAA) content appeared lower (11–31% reduction) in the transgenic lines compared to the wild type (WT) controls, with the lowest level (31% reduction) in TL1. Total internode numbers, bract numbers and bract area were significantly reduced in all transgenic lines in comparison with the WT controls. Only TL1 showed significantly lower plant diameter, total leaf area and total dry weight, whereas none of the AtSHI expressing lines showed altered timing of flower initiation, cyathia abscission or bract necrosis. This study demonstrated that introduction of the AtSHI gene into poinsettia by genetic engineering can be an effective approach in controlling plant height without negatively affecting flowering time. This can help to reduce or avoid the use of toxic growth retardants of environmental and human health concern. This is the first report that AtSHI gene was overexpressed in poinsettia and transgenic poinsettia plants with compact growth were produced.
Abstract
No abstract has been registered
Authors
Alberto Santini Luisa Ghelardini Ciro De Pace Marie-Laure Desprez-Loustau Paolo Capretti Anne Chandelier Thomas Cech Danut Chira Stephanos Diamandis Talis Gaitnieks Jarkko Hantula Ottmar Holdenrieder Libor Jankovský Thomas Jung Dusan Jurc Thomas Kirisits Andrej Kunca Vaidotas Lygis Monika Malecka Benoit Marcais Sophie Schmitz Jörg Schumacher Halvor Solheim Alejandro Solla Ilona Szabò Panaghiotis Tsopelas Andrea Vannini Anna Maria Vettraino Joan Webber Stephen Woodward Jan StenlidAbstract
A large database of invasive forest pathogens (IFPs) was developed to investigate the patterns and determinants of invasion in Europe. Detailed taxonomic and biological information on the invasive species was combined with country-specific data on land use, climate, and the time since invasion to identify the determinants of invasiveness, and to differentiate the class of environments which share territorial and climate features associated with a susceptibility to invasion. IFPs increased exponentially in the last four decades. Until 1919, IFPs already present moved across Europe. Then, new IFPs were introduced mainly from North America, and recently from Asia. Hybrid pathogens also appeared. Countries with a wider range of environments, higher human impact or international trade hosted more IFPs. Rainfall influenced the diffusion rates. Environmental conditions of the new and original ranges and systematic and ecological attributes affected invasiveness. Further spread of established IFPs is expected in countries that have experienced commercial isolation in the recent past. Densely populated countries with high environmental diversity may be the weakest links in attempts to prevent new arrivals. Tight coordination of actions against new arrivals is needed. Eradication seems impossible, and prevention seems the only reliable measure, although this will be difficult in the face of global mobility.
Authors
Jane Uhd Jepsen Erik Martin Biuw Rolf Anker Ims Lauri Teemu Kapari Tino Schott Ole Petter Laksforsmo Vindstad Snorre HagenAbstract
Insect outbreaks in northern-boreal forests are expected to intensify owing to climate warming, but our understanding of direct and cascading impacts of insect outbreaks on forest ecosystem functioning is deficient. The duration and severity of outbreaks by geometrid moths in northern Fennoscandian mountain birch forests have been shown to be accentuated by a recent climatemediated range expansion, in particular of winter moth (Operophtera brumata). Here, we assess the effect of moth outbreak severity, quantified from satellite-based defoliation maps, on the state of understory vegetation and the abundance of key vertebrate herbivores in mountain birch forest in northern Norway. We show that the most recent moth outbreak caused a regional-scale state change to the understory vegetation, mainly due to a shift in dominance from the allelopathic and unpalatable dwarf-shrub Empetrum nigrum to the productive and palatable grass Avenella flexuosa. Both these central understory plant species responded significantly and nonlinearly to increasing outbreak severity. We further provide evidence that the effects of the outbreak on understory vegetation cascaded to cause strong but opposite impacts on the abundance of the two most common herbivore groups. Rodents increased with defoliation, largely mirroring the increase in A. flexuosa, whereas ungulate abundance instead showed a decreasing trend. Our analyses also suggest that the response of understory vegetation to defoliation may depend on the initial state of the forest, with poorer forest types potentially allowing stronger responses to defoliation