Publications
NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.
2012
Authors
Subal Chandra Kumbhakar Sjur Baardsen Gudbrand LienAbstract
No abstract has been registered
Authors
Silvia Ivemeyer Gidi Smolders Jan Brinkman Elisabeth Gratzer Berit Hansen Britt Henriksen Johann Huber Christine Leeb Solveig March Cecilie Marie Mejdell Pip Nicholas Stephen Roderick Elisabeth Stöger Mette Vaarst Lindsay k Whistance Christoph Winckler Michael WalkenhorstAbstract
No abstract has been registered
Authors
Hugo Germain Denis Lachance Gervais Pelletier Carl Gunnar Fossdal Halvor Solheim Armand SeguinAbstract
A 1149 bp genomic fragment corresponding to the 5' non-coding region of the PgD1 (Picea glauca Defensin 1) gene was cloned, characterized, and compared with all Arabidopsis thaliana defensin promoters. The cloned fragment was found to contain several motifs specific to defence or hormonal response, including a motif involved in the methyl jasmonate reponse, a fungal elicitor responsive element, and TC-rich repeat cis-acting element involved in defence and stress responsiveness. A functional analysis of the PgD1 promoter was performed using the uidA (GUS) reporter system in stably transformed Arabidopsis and white spruce plants. The PgD1 promoter was responsive to jasmonic acid (JA), to infection by fungus and to wounding. In transgenic spruce embryos, GUS staining was clearly restricted to the shoot apical meristem. In Arabidopsis, faint GUS coloration was observed in leaves and flowers and a strong blue colour was observed in guard cells and trichomes. Transgenic Arabidopsis plants expressing the PgD1::GUS construct were also infiltrated with the hemibiotrophic pathogen Pseudomonas syringae pv. tomato DC3000. It caused a suppression of defensin expression probably resulting from the antagonistic relationship between the pathogen-stimulated salicylic acid pathway and the jasmonic acid pathway. It is therefore concluded that the PgD1 promoter fragment cloned appears to contain most if not all the elements for proper PgD1 expression and that these elements are also recognized in Arabidopsis despite the phylogenetic and evolutionary differences that separates them.
Abstract
No abstract has been registered
Authors
Sarah Hale Marie Catharina Elmquist Rahel C Brändli Thomas Hartnik Lena Jakob Thomas Henriksen David Werner Gerard CornelissenAbstract
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Authors
Kjersti Aaby Sebastian Mazur Arnfinn Nes Grete SkredeAbstract
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Abstract
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Abstract
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Authors
Lena Jakob Thomas Hartnik Thomas Henriksen Marie Catharina Elmquist Rahel C Brändli Sarah Hale Gerard CornelissenAbstract
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Authors
Rune Andreassen Julia Schregel Alexander Kopatz Camilla Tobiassen Per Knappskog Snorre Hagen Oddmund Kleven Michael Schneider Ilpo Kojola Jouni Aspi Alexander M. Rykov Konstantin F. Tirronen Pjotr I. Danilov Hans Geir EikenAbstract
No abstract has been registered