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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.

NIBIO POP → NIBIO Rapport → NIBIO Bok → Våre vitenskapelige publikasjoner (i Nasjonalt vitenarkiv) → Se våre forskningsdata i Dataverse →

1998

Authors

Alf Bakke

Abstract

Det er ikke registrert sammendrag

Authors

Edward Tipping C. Woof B.M. Simon S. Lofts A.J. Lawlor Charlotte Bryant D.D. Harkness

Abstract

Det er ikke registrert sammendrag

Authors

M.J. Latkowska Harald Kvaalen M. Appelgren

Abstract

Det er ikke registrert sammendrag

Authors

Bengt Ehnström Erkki Annila Øystein Austarå Susanne Harding Jon Gunnar Ottosson

Abstract

Det er ikke registrert sammendrag

Authors

Oddvar Skre Frans-Emil Wielgolaski Bjørn Moe

Abstract

Det er ikke registrert sammendrag

Authors

Tore Skrøppa

Abstract

Det er ikke registrert sammendrag

Authors

Tore Skrøppa

Abstract

Det er ikke registrert sammendrag

Authors

Espen Lydersen Valter Angell Odd Eilertsen Thorbjørn Larssen Jan Mulder I.P. Muniz Hans Martin Seip

Abstract

Det er ikke registrert sammendrag

Authors

Tor Myking

Abstract

Det er ikke registrert sammendrag

Authors

Vincent R. Franceschi Trygve Krekling Alan A. Berryman Erik Christiansen

Abstract

The bark anatomy of Norway spruce clones that were resistant or susceptible to Ceratocystis polonica, a bark beetle vectored fungal pathogen, was compared. The major difference concerned the axial parenchyma cells, called polyphenolic parenchyma (PP cells) because of their vacuolar deposits. The phenolic nature of the deposits was indicated by autofluorescence under blue light, and immunocytochemical studies demonstrating PP cells are enriched in phenylalanine ammonia lyase (EC 4.3.1.5), a key enzyme in phenolic synthesis. Susceptible clone PP cells occurred as single rows filled with dense deposits. The resistant clone had 40% more PP cells, which occurred in rows two cells thick with individual cells also scattered among the sieve cells, and had lighter deposits. Trees inoculated with fungus were analyzed but a distinct fungal response could not be separated from the general wound response. In the resistant clone, phenolic bodies were reduced in size and density or disappeared completely 12 day after wounding, and PP cell size increased. The susceptible clone phenolics and cell size changed only slightly. These data show that PP cells are active in synthesis, storage, and modification of phenolics in response to wounding, providing a primary site of constitutive and inducible defenses.