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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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1995

Academic – Induced responses in phenolic metabolism in two Norway spruce clones after wounding and inoculation with Ophiostoma polonicum, a bark beetle-associated fungus

Franck Brignolas, B. Lacroix, François Lieutier, ...

Plant Physiology, 109 1995. 821-827

Authors

Franck Brignolas B. Lacroix François Lieutier Daniel Sauvard A. Drouet A.C. Claudot A. Yart Alan A. Berryman Erik Christiansen

Abstract

Two Norway spruce (Picea abies Karst.) clones, one resistant and the other susceptible to mass inoculation with Ophiostoma polonicum Siem., were compared with regard to their phenolic compositions and chalcone synthase (CHS) and stilbene synthase activities of their phloem before and at 6 and 12 d after artificial inoculation with sterile malt agar or O. polonicum. In unwounded phloem, the resistant clone differed from the susceptible clone by the presence of taxifolin glycoside, lower concentrations of stilbene glycosides, and higher CHS activity. After inoculation, ()-catechin concentration and CHS activity dramatically increased around the wound, particularly in the resistant clone. Stilbene synthase activity also increased, but more slowly and to a lower level, whereas the concentrations of stilbenes remained stable. Tanning ability decreased in the susceptible done, whereas it remained stable in the resistant one. It is proposed that the induced phenolic response of Norway spruce phloem consists of an activation of the phenolic pathway, finally leading to tannins and insoluble polymers. It is suggested that resistance to O. polonicum depends on the ability of the tree to easily activate the flavonoid pathway.

Lecture – Initial interactions in living bark and sapwood of conifers infected by root fungi

Martin Johansson, Lennart Lundgren, Frederick Asiegbu

Aktuelt fra Skogforsk, 4/95 1995. 12-15

Authors

Martin Johansson Lennart Lundgren Frederick Asiegbu

Abstract

No abstract has been registered

Academic – Insect fauna compared between six polypore species in a southern Norwegian spruce forest

Bjørn Økland

Fauna Norvegica, Serie B, 42 1995. 21-26

Authors

Bjørn Økland

Abstract

No abstract has been registered

Lecture – Introduction to the second joint symposium at Svanvik, Norway

Kåre Olav Venn

DN-utredning, 1995/8 1995. 11-15

Authors

Kåre Olav Venn

Abstract

No abstract has been registered

Lecture – Isolation and characterization of a cDNA encoding a g-thionin-like protein from roots of Norway spruce

Praveen Sharma, Anders Lönneborg

Aktuelt fra Skogforsk, 6/95 1995. 41-42

Authors

Praveen Sharma Anders Lönneborg

Abstract

No abstract has been registered

Academic – Liming of Wetlands in the Røynelandsvatn catchment - Effects on Soil Chemistry and Neutralisation Properties in the Soil Profile.

Jens Kværner, Per Kraft

Water, Air and Soil Pollution, 85(2) 1995. p. 985-990

To document

Authors

Jens Kværner Per Kraft

Abstract

No abstract has been registered

Lecture – Localization of anti-fungal hydrolases in seedling roots of Norway spruce infected with Heterobasidion annosum

Frederick Asiegbu, Geoffrey Daniel, Martin Johansson

Aktuelt fra Skogforsk, 4/95 1995. 6-11

Authors

Frederick Asiegbu Geoffrey Daniel Martin Johansson

Abstract

No abstract has been registered

Lecture – Mapping of element load in the region of Ziar nad Hronom

B. Mankovska, K. Vrana, Eiliv Steinnes, ...

In: VIII, AI Sympozium 25.-27.9.1995 Slovakia, pp. 157-163. ZSNP. The Slovak National Uprising Works, 1995.

Authors

B. Mankovska K. Vrana Eiliv Steinnes Richard Horntvedt

Abstract

No abstract has been registered

Lecture – Monitoring of forest damage in Norway

Dan Aamlid, Kåre Olav Venn, Svein Solberg, ...

In: Rasmussen, L. & M. Løber (eds.):Monitoring forest damage in the Nordic countries. Selected proceedings from meeting in the SNS ad hoc Group on Monitoring of Forest Damage, 10-11 May, 1994, Lyngby, Denmark, pp. 14-17., 1995.

Authors

Dan Aamlid Kåre Olav Venn Svein Solberg Tord K. Rindal

Abstract

No abstract has been registered

Lecture – Native forest genetic resources - Norway

Tore Skrøppa

Post-Congress Excursion, XX IUFRO World Congress, Helgeland. 19.09.1995 - 20.09.1995

Authors

Tore Skrøppa

Abstract

No abstract has been registered

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