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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.

2011

Sammendrag

Worldwide macroalgae production increases every year wheeas in Europe the production has decreased in the last 10 years. The further expansion of the industry depends on a stable access to raw material, development of valuable products and the transfer of expertise between the developed and less developed regions. Therefore, the project NETALGAE aims to create a European network of relevant stakeholders within the marine macroalgae sector. This network is expected to make progress towards developing industrial, commercial and scientific links. The Norwegian macroalgae industry is organized and the management system is well developed.

Sammendrag

Ericacea are ubiquitous calcifuges that often dominate acidic soils with poor nutrient status. Their nutrition depends on mycorrhizal fungi, which provide access to recalcitrant substrates unavailable to non-mycorrhizal plants. To date, the only experimentally proven ericoid mycorrhizal fungi belong to the Ascomycota. Ericoid mycorrhiza (ErM) with an unusual 1- to 3-layer sheat of clamped hyphae were observed in Vaccinium spp. roots in two habitats in mid-Norway. The respectiv mycobiont was isolated and examined for polygenetic position and ability to form ericoid mycorrhiza. Two conspecific clamp-and cystidia-bearing isolates formed the characteristic sheated ErM and enhanced growth of ericaceous hosts in vitro. Both failed to riably amplify with several common primer combinations (e.g.,ITS1 and ITS1F+ITS4); based on three RNA gene analyses they reside in the proximity of Trechisporales and Hymenochaetales and represent a unique lineage within Agaricomycetes.

Sammendrag

Intervju med Richard Meadow og Eline Hågvar (UMB) om genetiskmodifiserte insekter.

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Sammendrag

The northernmost range of beech (Fagus sylvatica L.) is in southern Norway and consists of two distinct and isolated distributions, a single population at Seim in West Norway and several adjacent populations in Vestfold, East Norway. The modest beech pollen deposits beyond these main distributions suggest that the Norwegian beech distribution has never been an extension of the south Scandinavian range. We used genetic markers and historical sources to trace the ancestor populations for the beech at Seim and Vestfold, hypothesising Denmark as the most likely source. Nuclear inter-simple sequence repeat markers, amplified by polymerase chain reaction (PCR), were applied to estimate genetic distances between beech populations in Norway, England and Denmark. The variation in chloroplast DNA polymorphism was estimated using PCR-restriction fragment length polymorphism. The nuclear genetic data indicate Denmark as a source for the beech in Norway, although the data are less certain in the case of Seim than in that of Vestfold. The populations from South England were genetically different from most Scandinavian populations. The genetic variation within Norwegian populations was only slightly lower than that of the English and Danish populations, questioning birds as vectors for dispersal. Thus, the pollen data and our results are in accordance with the intentional introduction and documented human migrations across Skagerrak before and during the Viking Age.