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.

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2003

– Rot and butt rot in Norway spruce stands following thinning done in summer and winter

Halvor Solheim

In: Thomsen, I.M. (ed.): Forest health problems in older forest stands. Proceedings of the Nordic/Baltic Forest Pathology Meeting, Denmark, September 2002. Skov & Landskab. Reports, 13 2003. 13-20

Authors

Halvor Solheim

Abstract

No abstract has been registered

– RESROBS: Resistance of spruce to root and butt rot disease, an EU-funded research program

Stephen Woodward, Jan Stenlid, Marco Michelozzi, ...

In: Laflamme, G., Berube, J.A. & Bussieres (eds.): Root and butt rots of forest trees. 10th Int. Conf. Root and Butt Rots. Proc. IUFRO WP 7.02.01, Quebec City, Canada, Sept. 16-22, 2001. Laurentian Forestry Centre. Information Report, LAU-X-126 2003. 375-377

Authors

Stephen Woodward Jan Stenlid Marco Michelozzi Halvor Solheim B. Karlsson Panaghiotis Tsopelas

Abstract

No abstract has been registered

– The needle blight fungusDelphinella abietis attacksAbies species in western Norway

Halvor Solheim

In: Thomsen, I.M. (ed.): Forest health problems in older forest stands. Proceedings of the Nordic/Baltic Forest Pathology Meeting, Denmark, September 2002. Skov & Landskab. Reports, 13 2003. 34-37

Authors

Halvor Solheim

Abstract

No abstract has been registered

– Red belts. Occurrences in Norway in 2002

Halvor Solheim, Kåre Olav Venn

In: Thomsen, I.M. (ed.): Forest health problems in older forest stands. Proceedings of the Nordic/Baltic Forest Pathology Meeting, Denmark, September 2002. Skov & Landskab. Reports, 13 2003. 52-58

Authors

Halvor Solheim Kåre Olav Venn

Abstract

No abstract has been registered

– Stress-developed changes in monoterpene composition in stem phloem of Pinus sylvestris

M. Persson, J. Lönnquist, Bo Långström, ...

In: Persson, M.: Chemodiversity and function of monoterpene hydrocarbones in conifers. Doctoral thesis Royal inst. Technol. Dept. Chem., Org. Chem. Forskningsrapport 2003:83 (paper VIII, 10 pp.), 2003.

Authors

M. Persson J. Lönnquist Bo Långström Halvor Solheim M. Kyto Anna-Karin Borg-Karlson

Abstract

No abstract has been registered

Academic article – The putative gymnosperm plant defensin polypeptide (SPI1) accumulates after seed germination, is not readily released, and the SPI1 levels are reduced in Pythium dimorphum-infected spruce roots

Carl Gunnar Fossdal, Nina Elisabeth Nagy, Praveen Sharma, ...

Plant Molecular Biology, 52, 2003

To document

Authors

Carl Gunnar Fossdal Nina Elisabeth Nagy Praveen Sharma Anders Lønneborg

Abstract

No abstract has been registered

2002

Conference lecture – Increase of loose smut in barley seeds last year

Guro Brodal

4th ISTA PDC Seed health symposium, 2002

Authors

Guro Brodal

Abstract

No abstract has been registered

Academic chapter – Induction of defence responses and snow mould resistance in cereals and perennial ryegrass

Åshild Ergon, Anne-Marte Tronsmo, Ingerd Skow Hofgaard

IOBC/wprs Bulletin, 6 2002

Authors

Åshild Ergon Anne-Marte Tronsmo Ingerd Skow Hofgaard

Abstract

The effect of cold acclimation and defence activators on snow mould resistance and expression of pathogenesis-related (PR-) genes were investigated in winter cereals and perennial ryegrass. Cold acclimation, known to induce snow mould resistance, had apotentiating effect on snow mould-induced PR-gene expression in winter wheat. Chitosan treatment induced chitinase expression and in some cases also snow mould resistance in winter wheat. Bion treatment reduced snow mould resistance in perennial ryegrass.

– Globalisation and invasive alien species

Bjørn Åge Tømmerås, A. Jelmert, Trond Rafoss, ...

Globalisation Project report, 15 2002. 88 s.

Authors

Bjørn Åge Tømmerås A. Jelmert Trond Rafoss Leif Sundheim Frode Ødegaard Bjørn Økland

Abstract

No abstract has been registered

– Real-time PCR procedure to reliably detect and quantitate the pathogen Heterobasidion parviporum in infected spruce tissue culture clones

Ari M. Hietala, Morten Eikenes, Harald Kvaalen, ...

The IMC7. Book of Abstracts. The 7th International Mycological Congress. Oslo 11-17 August 2002. Abstract 831., 2002. 250

Authors

Ari M. Hietala Morten Eikenes Harald Kvaalen Halvor Solheim Carl Gunnar Fossdal

Abstract

One of our main interests is to learn about the molecular basis of host defense responses, using the coniferous host Norway spruce infected with the pathogen Heterobasidion parviporum as the experimental system. This basidiomycete and the closely related pathogen H. annosum are the major root rot causing pathogens in conifers.To screen host material for differential resistance towards H. parviporum, it is a necessity to quantify the fungal colonization of the host tissues. Therefore, we aimed to develop and compare the sensitivity of a real-time PCR to an ergosterol based method for determining the rate of colonization. We developed a quantitative multiplex real-time PCR procedure that reliably detecting down to 1pg H. parviporum DNA and 1ng host DNA.There was a very high correlation between the fungal-biomass/total-biomass and fungal-DNA/total-DNA rankings obtained with ergosterol and real-time PCR, strengthening the credibility of both methods. The results indicate that this real-time procedure can be a useful method to screen different spruce material for their relative resistance to the pathogen H. parviporum.

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