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.
2007
Foredrag – Identification and analysis of defence related genes in Norway spruce
Carl Gunnar Fossdal
Forfattere
Carl Gunnar FossdalSammendrag
Our goal is to study what gene products (mRNA and proteins) are important for trees in order to fend off pathogens. We are interested in the genetic basis of resistance focusing on the molecular basis of both the local and systemic defence responses of trees. So far we have focused on the host defense against necrotrophic fungi and studied the expression and role of defensins, peroxidases, chitinases, CHS, PAL, CAD and a number of other host gene products. Earlier work using clonal trials (in both Sweden and Norway) indicate that there is a genetic basis for resistance to the root-rot causing fungus Heterobasidion annosum s.l.. We have studied the timing and spatial signaling of the defense response in mature Norway spruce trees as well as seedlings and found that the molecular responses differ. Our studies suggest that the time from wounding and infection to induction of defense-related expression is shorter in resistant spruce clones indicating a more efficient host defense response than in susceptible trees.
Forfattere
Erik LysøeSammendrag
Identification and characterization of genes involved in mycotoxin synthesis and ongoing research to study the regulation of mycotoxin synthesis of Fusarium
Forfattere
Nicolette Fouche Jolanda Roux Halvor Solheim Ronald N. Heath Gilbert Kamgan Nkuekam P. Chimwamurumbe K.G. Pegg Michael J. WingfieldSammendrag
Det er ikke registrert sammendrag
Sammendrag
Identification of up-regulated genes during zearalenone biosynthesis in strains of Fusarium.
Sammendrag
Identification of up-regulated genes during zearalenone biosynthesis in strains of Fusarium.
Sammendrag
Det er ikke registrert sammendrag
Sammendrag
We evaluated direct and interactive effects of light quality and intensity, temperature and light, diurnal rhythms, and timing of high relative humidity during long day lengths on sporulation of Bremia lactucae, the causal agent of lettuce downy mildew, using inoculated lettuce seedlings and detached cotyledons. Suppression of sporulation by light was strongly dependent upon temperature and there was little suppression at "10°C. The most suppressive waveband was in the range from 400 to 450 nm, although a lesser effect of wavebands from 450 to 500 and 500 to 550 nm could be detected. At 15°C, near the lower threshold for suppression of sporulation by light, a clear diurnal pattern of sporulation was observed independent of light and darkness. This diurnal rhythm potentially could interact with light and temperature to confound the results of controlled environment studies, and may be the controlling factor in timing of sporulation at low temperatures. Forecasting models that currently use sunrise and sunset to delimit periods conducive to sporulation can be adapted to short nights and extended twilight conditions by incorporating the effects reported herein. Additionally, models of sporulation could be adapted to better reflect a decrease or absence of the suppressive effect of light at
Forfattere
Lene Frost Andersen Trine Husøy Svein Olav Kolset Henrik Jakobsen Jan Alexander Mona-Lise Binderup Knut Helkås Dahl Erik Dybing Wenche Kristin Farstad Livar Frøyland Ragnhild Halvorsen Margaretha Haugen Kåre Julshamn Georg Kapperud Hilde Kruse Øyvind Lie Anne-Katrine Lundebye Helle Margrete Meltzer Judith Ann Narvhus Kristine Naterstad Ingolf Nes Bjørn Næss Jan Erik Paulsen Tore Sanner Janneche Utne Skåre Inger-Lise Steffensen Leif Sundheim Åshild KrogdahlSammendrag
Det er ikke registrert sammendrag
Forfattere
Eva SkarbøvikSammendrag
Det er ikke registrert sammendrag
Forfattere
Erlend Nybakk Eric N. HansenSammendrag
Det er ikke registrert sammendrag