Publikasjoner
NIBIOs ansatte publiserer flere hundre vitenskapelige artikler og forskningsrapporter hvert år. Her finner du referanser og lenker til publikasjoner og andre forsknings- og formidlingsaktiviteter. Samlingen oppdateres løpende med både nytt og historisk materiale. For mer informasjon om NIBIOs publikasjoner, besøk NIBIOs bibliotek.
2009
Forfattere
W. De Vries Svein Solberg M. Dobbertin H. Sterba D. Laubhann M. van Oijen C Evans P. Gundersen J. Kros G.W.W. Wamelink G. J. Reinds M.A. SuttonSammendrag
Det er ikke registrert sammendrag
Forfattere
Clemens Reimann Tor Erik Finne Øystein Nordgulen Ola Magne Sæther Arnold Arnoldussen David BanksSammendrag
Det er ikke registrert sammendrag
Forfattere
Svein Halvor Knutsen S. Dimitrijevic E. L. Molteberg Vegard Segtnan Lene Kaaber Trude WicklundSammendrag
Freeze-dried potato samples were obtained from the varieties Saturna and Peik that had been subjected to different agronomic conditions and storage. Powdered samples originating from the same growth year were mixed with oil and heated simultaneously in a stone oven in order to study the potential for acrylamide (AA) formation in a fixed time and temperature situation. For baked samples originating from unstored potato a linear relationship was found between asparagine (Asn) and reducing sugar (RS) content and AA formation. For these samples the AA content varied linearly with a* except from samples that originally were high or low in Asn. Upon storage the correlation between the quantity of the common precursors, Asn and RS, and AA were smaller. Results of the baking experiments suggest that the AA potential for stored potato cannot be predicted from RSs and Asn alone, and that other factors that might change during storage are of importance. Due to north European conditions the RSs might not always be the limiting substrate for AA formation. Additional information for the precursor content in 2004 and 2005 are included. No systematic effect on precursor contents related to chemical vine killing was observed. Precursor contents varied among and between varieties, different cultivation years and growth sites. (C) 2008 Swiss Society of Food Science and Technology. Published by Elsevier Ltd. All rights reserved.
Forfattere
Anne-Kristin LøesSammendrag
The schooldays of European children and youth tend to get longer, and their eating patterns,especially during school hours, are often unsatisfactory. Healthy school food is a logic responseto this situation. Organic food contributes to sustainable nutrition, and hence is an interestingstarting point for healthier menus and food education. The research project "innovative PublicOrganic food Procurement for Youth" (iPOPY) studies efficient ways to implement organic foodin public serving outlets for young people. Out of the four iPOPY funding countries, Finland andItaly serve a warm school meal daily for all pupils, whereas Denmark and Norway rely on packedlunch from home. Italy and Denmark have ambitious goals for organic food in schools, whereasFinland and Norway have not (yet). In Germany, different states have very different school mealsystems, but the interest for organic food is generally high. We argue that school food served in"captive catering" such as found in Finland, financed by the public and made by organic orotherwise sustainable products, has the largest potential to support a sustainable nutrition and -development.
Sammendrag
Geoffrey D. Gooch and Per Stålnacke. 2009. THE LAKE PEIPSI AND ITS DRAINAGE BASIN CASE STUDY IWA Publishing. In: Water Framework Directive: Model supported Implementation A Water Manager"s Guide. Edited by Fred F Hattermann and Zbigniew W Kundzewicz. ISBN: 9781843392736. Published by IWA Publishing, London, UK.pp. 184-201
Sammendrag
Mite damage is often considered a spray induced problem. We monitored 12 Norwegian strawberry fields, 6 organic and 6 conventional fields, by sampling leaves two times per year for two years. Young folded leaflets were visually inspected for eggs and adults of strawberry mite (Phytonemus pallidus) and completely unfolded leaves were used for extraction of mobile stages of two-spotted spider mite (Tetranychys urticae). The spider mites were examined for infection of the mite-pathogenic fungus Neozygites floridana. Predatory mites (Phytoseiidae) were recorded on both leaf types, and the females mounted and identified. We also sampled leaves from selected plants in the boundary vegetation of most fields, to look for sources of T. urticae, phytoseiids and N. floridana, and soil from each field, to study the natural occurrence of entomopathogenic nematodes. We will present the results on abundance and diversity of the organisms investigated, and discuss similarities and differences between organic and conventional fields.
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
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Forfattere
Carl Gunnar Fossdal Nadeem Yaqoob Halvor SolheimSammendrag
The root-rot causing fungus Heterobasidion annosum senso lato is the most devastating pathogen of conifers in Europe. This pathogen enter Norway spruce trees trough the roots and colonizes the tree from within, growing as a saprophyte when established within the dead heartwood and acting as a necrotroph when in contact with living host tissue. The genome of this devastating pathogen has now been sequenced in collaboration with JGI and gene annotation is ongoing and genomic work is currently in progress (Stenlid et al. work in progress). We have worked with the host Norway spruce from a molecular perspective for more than ten years. Twenty percent of the trees in Norwegian spruce stands tend to be infected and this pathogen that can colonize ten meters up inside the trunk. The tree have defences against this pathogen and the attack can be fought off by the bark and living wood but not by the hearthwood. The tree has a unique defense against this internal attack by forming a reaction zone; in this case the host defense is directed inwardly by the still living sapwood toward the central colonized wood. We have in the last years studied the host responses to infection in Norway spruce clones at the transcriptional level and found that the speed of recognition and spatial defense signalling appears to be the hallmarks of trees with high degree of resistance. We strive to study both partners in this pathosystem from a molecular perspective, and are using suppressive subtractive hybridization (SSH) followed by Real-Time RT PCR verification to look at differentially expressed genes(Yakovlev et al. 2008). In addition the colonization profiles are followed on extracted gDNA using quantitative Real-Time PCR (Hietala et al. 2009).