Blar i NIBIO Brage på forfatter "Fossdal, Carl Gunnar"
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Acetylation of Pinus radiata delays hydrolytic depolymerisation by the brown-rot fungus Rhondonia placenta
Beck, Harold Greeley; Hegnar, Olav Aaseth; Fossdal, Carl Gunnar; Alfredsen, Gry (Journal article; Peer reviewed, 2018-11-01)Acetylation of wood can provide protection against wood deteriorating fungi, but the exact degradation me- chanism remains unclear. The aim of this study was to determine the effect of acetylation of Pinus radiata wood ... -
Characterisation of Postia placenta colonisation during 36 weeks in acetylated southern yellow pine sapwood at three acetylation levels including genomic DNA and gene expression quantification of the fungus
Alfredsen, Gry; Pilgård, Annica; Fossdal, Carl Gunnar (Journal article; Peer reviewed, 2016-05-09)One way to protect timber in service against basidiomycete deterioration is by means of acetylation via reaction with acetic anhydride. The reason why acetylated wood (WAc) is resistant against decay fungi is still not ... -
Colonisation profiles of Thekopsora areolata and a co-existing Phomopsis species in Norway spruce shoots
Hietala, Ari Mikko; Solheim, Halvor; Fossdal, Carl Gunnar (Others, 2006)The difficulty in sub-culturing biotrophic fungi complicates etiological studies related to the associated plant diseases. By employing species-specific ITS sequence stretches, we used real-time PCR to investigate the ... -
Defence reactions in Norway spruce toward the pathogenic root-rot causing fungus Heterobasidion annosum
Fossdal, Carl Gunnar; Hietala, Ari Mikko; Kvaalen, Harald; Solheim, Halvor (Others, 2006)The root-rot causing fungus Heterobasidion annosum can attack both spruce and pine trees and is the economically most damaging pathogen in northern European forestry. We have monitored the H. annosum S-type (fairly recently ... -
DNA fra en celle er nok for å finne råteseoppen!
Fossdal, Carl Gunnar; Hietala, Ari Mikko; Solheim, Halvor (Glimt fra skogforskningen;4-2005, Others, 2005)Skogforsk har utviklet en svært følsom metode for å påvise skadelige sopper i trær og trevirke. Dette kan bli viktig i kampen mot rotkjuke, som koster skognæringen i Europa 6-7 milliarder kroner årlig, og mot andre skadelige ... -
Epigenetisk hukommelse og klimatilpasning
Fossdal, Carl Gunnar; Yakovlev, Igor (Glimt fra Skog og landskap;01/11, Others, 2011)Hvor raskt en organisme kan tilpasse seg forandringer, er avgjørende for hvilket utfall raske endring er i klima vil ha for organismens utbred else og overlevelse. Grana viser en evne til utrolig raskt å tilpasse seg ... -
Epitype-inducing temperatures drive DNA methylation changes during somatic embryogenesis in the long-lived gymnosperm Norway spruce
Viejo, Marcos; Tengs, Torstein; Yakovlev, Igor; Cross, Hugh; Krokene, Paal; Olsen, Jorunn Elisabeth; Fossdal, Carl Gunnar (Peer reviewed; Journal article, 2023-07-20)An epigenetic memory of the temperature sum experienced during embryogenesis is part of the climatic adaptation strategy of the long-lived gymnosperm Norway spruce. This memory has a lasting effect on the timing of bud ... -
Furfurylated wood: impact on Postia placenta gene expression and oxalate crystal formation
Alfredsen, Gry; Fossdal, Carl Gunnar; Nagy, Nina Elisabeth; Jody, Jellison; Barry, Goodell (Journal article; Peer reviewed, 2016-03-24)Modified wood can provide protection against a range of wood deteriorating organisms. Several hypotheses have been put forward regarding the protection mechanisms against wood decaying fungi including fungal enzyme ... -
Identification and in silico characterization of novel and conserved microRNAs in methyl jasmonate-stimulated Scots Pine (Pinus sylvestris L.) needles
Krivmane, Baiba; Šņepste, Ilze; Šķipars, Vilnis; Yakovlev, Igor; Fossdal, Carl Gunnar; Vivian-Smith, Adam; Ruņģis, Dainis (Peer reviewed; Journal article, 2020-03-28)MicroRNAs (miRNAs) are non-protein coding RNAs of ~20–24 nucleotides in length that play an important role in many biological and metabolic processes, including the regulation of gene expression, plant growth and developmental ... -
In Silico Analysis of Small RNAs Suggest Roles for Novel and Conserved miRNAs in the Formation of Epigenetic Memory in Somatic Embryos of Norway Spruce
Yakovlev, Igor; Fossdal, Carl Gunnar (Journal article; Peer reviewed, 2017-09-08)Epigenetic memory in Norway spruce affects the timing of bud burst and bud set, vitally important adaptive traits for this long-lived forest species. Epigenetic memory is established in response to the temperature conditions ... -
Living inside termites: an overview of symbiotic interac-tions, with emphasis on flagellate protists
Duarte, Sonia; Nunes, Lina; Borges, Paulo A.V.; Fossdal, Carl Gunnar; Nobre, Tânia (Journal article; Peer reviewed, 2017)To degrade lignocellulose efficiently, lower termites rely on their digestive tract’s specific features (i.e., hysiological properties and enzymes) and on the network of symbiotic fauna harboured in their hindgut. This ... -
Major transcriptomic differences are induced by warmer temperature conditions experienced during asexual and sexual reproduction in Fragaria vesca ecotypes
Zhang, Yupeng; Viejo, Marcos; Yakovlev, Igor; Tengs, Torstein; Krokene, Paal; Hytönen, Timo; Grini, Paul; Fossdal, Carl Gunnar (Peer reviewed; Journal article, 2023-07-14)A major challenge for plants in a rapidly changing climate is to adapt to rising temperatures. Some plants adapt to temperature conditions by generating an epigenetic memory that can be transmitted both meiotically and ... -
Mass spectrometry reveals the presence of specific set of epigenetic DNA modifications in the Norway spruce genome
Yakovlev, Igor; Gackowski, Daniel; Abakir, Abdulkadir; Viejo, Marcos; Ruzov, Alexey; Olinski, Ryszard; Starczak, Marta; Fossdal, Carl Gunnar; Krutovsky, Konstantin V. (Journal article; Peer reviewed, 2019-12-17)5-Methylcytosine (5mC) is an epigenetic modification involved in regulation of gene expression in metazoans and plants. Iron-(II)/α-ketoglutarate-dependent dioxygenases can oxidize 5mC to 5-hydroxymethylcytosine (5hmC), ... -
Methylome, transcriptome, and phenotype changes induced by temperature conditions experienced during sexual reproduction in Fragaria vesca
Zhang, Yupeng; Toivainen, Tuomas; Mackenzie, Kathryn; Yakovlev, Igor; Krokene, Paal; Hytönen, Timo; Grini, Paul; Fossdal, Carl Gunnar (Peer reviewed; Journal article, 2023-06-21)Temperature conditions experienced during embryogenesis and seed development may induce epigenetic changes that increase phenotypic variation in plants. Here we investigate if embryogenesis and seed development at two ... -
Molecular underpinnings of methyl jasmonate‐induced resistance in Norway spruce
Magerøy, Melissa; Wilkinson, Samuel W.; Tengs, Torstein; Cross, Hugh; Almvik, Marit; Petriacq, Pierre; Vivian-Smith, Adam; Zhao, Tao; Fossdal, Carl Gunnar; Krokene, Paal (Peer reviewed; Journal article, 2020-04-22)In response to various stimuli, plants acquire resistance against pests and/or pathogens. Such acquired or induced resistance allows plants to rapidly adapt to their environment. Spraying the bark of mature Norway spruce ... -
Nye molekylære verktøy for bedre plantehelse
Brurberg, May Bente; Rossmann, Simeon Lim; Lysøe, Erik; Skogen, Monica; Fossdal, Carl Gunnar (Journal article, 2024)Kombinasjonen av raskere, billigere DNA-sekvenseringsteknologier og avanserte analysemetoder har gjort høykapasitetssekvensering til et svært attraktivt verktøy med flere anvendelsesområder innen plantehelse. -
Populasjonsovervåking av sopp
Venn, Kåre; Fossdal, Carl Gunnar (Others, 2007)En systematisk overvåking av utvalgte sopparter kan gjøres ved å utvikle et system med fangst av soppsporer i volumetriske luftprøvetakere og påfølgende identifikasjon og kvantifisering ved hjelp av DNA-baserte metoder. ... -
Priming of inducible defenses protects Norway spruce against tree-killing bark beetles
Mageroy, Melissa; Christiansen, Erik; Långström, Bo; Borg-Karlson, Anna-Karin; Solheim, Halvor; Björklund, Niklas; Zhao, Tao; Schmidt, Axel; Fossdal, Carl Gunnar; Krokene, Paal (Peer reviewed; Journal article, 2019-11-01)Plants can form an immunological memory known as defense priming, whereby exposure to a priming stimulus enables quicker or stronger response to subsequent attack by pests and pathogens. Such priming of inducible defenses ... -
Quantifying fungi in logging residues with real-time PCR
Alfredsen, Gry; Børja, Isabella; Filbakk, Tore; Fossdal, Carl Gunnar (Chapter, 2011)Logging residues, branches and treetops after logging, were considered in the past as unsalable portions of the felled trees and remained on the landing. Currently, logging residues are harvested, stored in piles for ... -
Rotkjuke - på godt og vondt
Fossdal, Carl Gunnar; Hietala, Ari Mikko; Solheim, Halvor (Glimt fra Skog og landskap;05/08, Others, 2008)Rotkjuke er en skadesopp, og et stort problem i europeiske skoger. Den angriper 20 prosent av grantrærne og frigjør derfor mye CO2. Kunnskap om rotkjukas nedbrytingsprosesser kan imidlertid tenkes brukt til å lage biodrivstoff ...