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.
2009
Forfattere
Erik JonerSammendrag
Radiointervju om mulige negative miljøeffekter av nanomaterialer.
Forfattere
Erik JonerSammendrag
Et radioforedrag om nanomaterialer og deres potensielle negative miljøeffekter. Både golfkøller, kjøleskap og solkrem har nanoteknologi til felles. Denne teknologien er fremdeles i sin spede barndom men til tross for det er vi fullstendig omgitt av den og vi fungerer alle sammen som en slags forsøkskaniner. Sier dagens foredragsholder seniorforsker ved bioforsk på ÅS, Erik Joner i dette P2-akademiet.
Sammendrag
Members of the APSES family of fungal proteins have been identified as key regulators of fungal development, controlling processes such as mating, sporulation and dimorphic growth. We deleted the FgStuA gene in Fusarium graminearum and show that the mutant is greatly impaired in spore development, pathogenicity and secondary metabolism. FgStuA is closely related to FoStuA in F. oxysporum, but unlike FoStuA mutants the FgStuA mutants were greatly reduced in pathogenicity both on wheat and apple slices. The lack of ability to cause disease on wheat heads may be due to lack of trichothecene accumulation in planta. The FgStuA mutant also had a white/yellow mycelial phenotype compared to the red pigmented (aurofusarin) wild-type, had reduced aerial mycelium, susceptibility to oxidative stress, and had a less hydrophobic surface. Microarray analysis showed that most phenotypes could be inferred from gene expression data, such as down-regulation of the trichothecene gene cluster in the mutant. In an attempt to separate primary and secondary effects of FgStuA deletion, we carefully examined gene expression data together with promoter analysis and comparative genomics. The genes flanking FgStuA are conserved and syntenous in other fungal genomes and contain a gene encoding a putative clock controlled protein. FgStuAp and other APSES proteins share significant homology with DNA-binding domains of transcription factors controlling the critical G1/S phase cell cycle transition in both S. cerevisiae and S. pombe. Genes within MIPS Functional Category (FunCat) 10 "Cell cycle and DNA processing" are enriched among those more highly expressed in the FgStuA mutant than wild-type. Aspergillus StuAp response elements (A/TCGCGT/ANA/C) also were found highly enriched in promoter sequences for FunCat 10 genes, compared to the genome as a whole. Our results suggests that FgStuAp may act primarily as a repressor involved in cell cycle regulation, and may act only secondarily on sporulation, pathogenicity, and secondary metabolism.
Sammendrag
Members of the APSES family of fungal proteins have been identified as key regulators of fungal development, controlling processes such as mating, sporulation and dimorphic growth. We deleted the FgStuA gene in Fusarium graminearum and show that the mutant is greatly impaired in spore development, pathogenicity and secondary metabolism. FgStuA is closely related to FoStuA in F. oxysporum, but unlike FoStuA mutants the FgStuA mutants were greatly reduced in pathogenicity both on wheat and apple slices. The lack of ability to cause disease on wheat heads may be due to lack of trichothecene accumulation in planta. The FgStuA mutant also had a white/yellow mycelial phenotype compared to the red pigmented (aurofusarin) wild-type, had reduced aerial mycelium, susceptibility to oxidative stress, and had a less hydrophobic surface. Microarray analysis showed that most phenotypes could be inferred from gene expression data, such as down-regulation of the trichothecene gene cluster in the mutant. In an attempt to separate primary and secondary effects of FgStuA deletion, we carefully examined gene expression data together with promoter analysis and comparative genomics. The genes flanking FgStuA are conserved and syntenous in other fungal genomes and contain a gene encoding a putative clock controlled protein. FgStuAp and other APSES proteins share significant homology with DNA-binding domains of transcription factors controlling the critical G1/S phase cell cycle transition in both S. cerevisiae and S. pombe. Genes within MIPS Functional Category (FunCat) 10 "Cell cycle and DNA processing" are enriched among those more highly expressed in the FgStuA mutant than wild-type. Aspergillus StuAp response elements (A/TCGCGT/ANA/C) also were found highly enriched in promoter sequences for FunCat 10 genes, compared to the genome as a whole. Our results suggests that FgStuAp may act primarily as a repressor involved in cell cycle regulation, and may act only secondarily on sporulation, pathogenicity, and secondary metabolism.
Forfattere
Randi Wikdahl Anne Kjersti Bakken Anne LangerudSammendrag
Rapporten er lukket.
Forfattere
Torstein H. Garmo Åshild T. Randby Anne Kjersti BakkenSammendrag
For å oppnå ønska kvalitet på hausta grovfôr, kan det lønne seg å bestemme utviklingstrinnet til graset etter ein talbasert skala. Artikkelen forklarer koss det kan gjerast og viser eksempel på korleis kvaliteten er på ulike utviklingstrinn.
Forfattere
Brita ToppeSammendrag
Plantevernleksikonet. Skadegjørere: Asaleavisnesjuke - Hvitkragesopp - Rot- og knollråte - Corynespora-bladflekk - Torvskimmel - Mjøldogg - Pelargoniumrust - Krypmugg - Kransskimmel - Rotsvartsopp - Primulabladflekk - Fusariose - Bakterievisning på pelargonium - Bakterievisning på begonia - Bakteriebladgalle - Prydplantebløtråte - Bakteriesvulst - Bakteriebladflekk på primula - Krysantemumdvergsjukeviroid - Prunus-ringflekkvirus - Tobakknekrosevirus - Tobakkmosaikkvirus - Pelargoniumblomsterspetningsvirus - Tospovirus - For hver skadegjører gis en oversikt over symptomer/skadevirkning, vertplanter, overlevelse og spredning og bekjempelse.
Forfattere
Leif SundheimSammendrag
Plantevernleksikonet. Skadegjørere:Flekkskurv - Ertefotsjuke - Bærbuskbladflekksopp - Mjølauke - Kjevlesopp - Bladfaksbrunflekk - Bringebærskuddsjuke - Filtsopp - Rotdreper - Kløverråte - Kløverskålsopp - Bærbuskbladfallsopp - Greindød - Rosestråleflekk - Erteflekk - Persillebladflekk - Selleribladflekk - Ertemjøldogg - Solbærmjøldogg - Rød tråd - Filtrust - Eplerust - Rapprust - Roserust - Hekseringer - Honningsopp - Rhizoctonia-brunflekk - Hundegrasflekk - Timotei-øyeflekk - Kløverbrann - Grå øyeflekk i gras - Pærebrann - Gras-visnesjuke - Vorteskurv - For hver skadegjører gis en oversikt over symptomer/skadevirkning, vertplanter, overlevelse og spredning og bekjempelse.
Forfattere
Arne HermansenSammendrag
For hver skadegjører gis en oversikt over symptomer/skadevirkning, vertplanter, overlevelse og spredning og bekjempelse.
Forfattere
Hege Merete ØrpenSammendrag
Plantevernleksikonet. Skadegjørere: Rotsnutebiller - Kløversnutebille - Kålstengelsnutebille - Ertesnutebille - Kornbladbille - Koloradobille - Nepejordlopper - Kornjordloppe - Glansbiller - Rapsglansbille - Smellere - Metallsmeller - Grå smeller - Kornsmeller - Gråsvart åtselbille - Sommerfugler - Viklere - Ertevikler - Vanlig jordbærvikler - Nattfly - Hagefly - Vanlig båndfly - Taggvingefly - Stengelfly - Åkerfly - Frukttrefly - Kålpyralide - Målere - Ripsmåler - Stor frostmåler - Heggspinnmøll - Byggflue - Liriomyza spp. For hver skadegjører gis en oversikt over utseende, utbredelse, vertplanter, livssyklus, skadevirkninger og bekjempelse.