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.
2011
Sammendrag
I denne artikkelen er det fokus på godt kjente og nye, mindre kjente sjukdomar på frukttre som alle kan gi alvorleg skade.
2010
Forfattere
Dag-Ragnar Blystad Randi Knudsen Carl Jonas Jorge Spetz Sissel Haugslien Kari Ørstad Mariano Cambra Tor MuntheSammendrag
In 1998 Plum pox virus (PPV) wasdetected for the first time in Norway. Virus-like symptoms were observed on several trees in a collection ofplum cultivars at Njøs Research Station in the Sogn og Fjordane County in WestNorway. The Norwegian Food SafetyAuthority and the Norwegian Crop Research Institute immediately startedsurveying other variety collections around the country, nuclear stock materialand orchards in all important plum-growing areas. Since 1998 we have surveyed themain part of the commercial plum orchards in Norway. About 75 000 individualtrees have been tested. About 1 % of the trees have been found infected by PPV.Only the PPV-D strain has been found. It is suspected that the main infectionsource was infected plums or apricots imported to Njøs around 1970 or earlier.In most plum orchards in Norway,the spread of PPV by aphids is relatively slow. Therefore, we expect to be ableto eradicate PPV from commercial plum orchards in the near future.The eradication work iscontinuing.
Forfattere
Kirsten Bundgaard Muath K Alsheikh Sissel Haugslien G Adam F. Dale Dag-Ragnar Blystad Carl Jonas Jorge SpetzSammendrag
Det er ikke registrert sammendrag
Forfattere
Dag-Ragnar Blystad S. L. Nielsen A. O. Alfaro-Fernandéz Gábor Bese Dimitrinka Hristova Henryk Pospieszny Maja Ravnikar Maryjean Schenk Laura Tomassoli Christina Varveri Kari Ørstad Carl Jonas Jorge Spetz René van der VlugtSammendrag
Det er ikke registrert sammendrag
Forfattere
Carl Jonas Jorge Spetz Jihong Liu Clarke Merete Dees Sissel Haugslien Roar Moe Dag-Ragnar BlystadSammendrag
Det er ikke registrert sammendrag
Forfattere
J Santala O Samuilova Asko Hannukkala S Latvala H Kortemaa U Beuch A Kvarnheden Per Persson K Topp Kari Ørstad Carl Jonas Jorge Spetz S. L. Nielsen HG Kirk M Budziszewska P Wieczorek A Obrepalska-Steplowska H Pospieszny A Kryszczuk J Sztangret-Wisniewska Z Yin M Chrzanowska E Zimnoch-Guzowska E Jackeviciene L Taluntyte N Pupola J Mihailova I Lielmane L Jarvekulg K Kotkas E Rogozina A Sozonov I Tikhonovich P Horn I Broer S Kuusiene J Staniulis JG Uth G Adam JPT ValkonenSammendrag
Det er ikke registrert sammendrag
Sammendrag
Det er ikke registrert sammendrag
Forfattere
Dag-Ragnar Blystad jihong liu clarke Sissel Haugslien Merete Wiken Dees Erling Fløistad Shaochen Xing Carl Jonas Jorge SpetzSammendrag
Virus og fytoplasma i julestjerne har vært et forskningsfelt ved Bioforsk Plantehelse siden 1990-tallet. Vi har kombinert dette med ny kunnskap om gen-transformering. I 2009, etter flere års FoU-arbeid, er vi kommet så langt at vi har dyrket virusresistent julestjerne i et mindre forsøk i et gartneri. Nå er det naturlig å summere opp resultater vi har oppnådd og muligheter som åpner seg.
Sammendrag
The production of hydrogen in green algae is catalyzed by FeFe- hydrogenases, which have high conversion efficiency and high oxygen sensitivity. Most green algae analyzed to date where hydrogenase genes are detected, have been shown to contain two distinct hydrogenases. However, very little is known about which functions the two different enzymes represent. There are also many unknowns within the mechanisms behind hydrogen production as to the roles hydrogenases play under different conditions, and consequently also about the potential for optimization of a hydrogen production process which could be found in this respect. The presented study focuses on the possibility for presence of more than two hydrogenases in a single green alga. A large number of degenerate primers were designed and used to produce 3"-RACE products, which in turn were used to design gene specific primers used for PCR and 5"-RACE reactions. The sequences were aligned with known algal hydrogenases to identify products which had homology to these. Products where homology was identified were then explored further. A high number of clones from each band were sequenced to identify products with similar lengths which would not show up as separate bands on a gel. Sequences found to have homology with algal hydrogenases were translated into putative amino acid sequences and analyzed further to obtain detailed information about the presence of specific amino acids with known functions in the enzyme. This information was used to evaluate the likelihood of these transcripts coding for true hydrogenases, versus hydrogenase-like or narf-like proteins. Conclusion: Evidence showing that Chlamydomonas noctigama is able to transcribe three genes which share a significant number of characteristics with other known algal FeFe-hydrogenases is presented . The three genes have been annotated hydA1, hydA2 and hydA3.
Sammendrag
Det er ikke registrert sammendrag