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.
2018
Authors
Astrid Johansen Anne Kjersti Bakken Anne Langerud Ragnhild Borchsenius Sverre Heggset Atle HaugnesAbstract
No abstract has been registered
Authors
Astrid Johansen Anne Kjersti Bakken Anne Langerud Ragnhild Borchsenius Sverre Heggset Atle HaugnesAbstract
In a farm sceale study three baling strategies were examined in order to document harvesting losses as well as quality of the resulting silage. It was concluded that it is possible to avoid comprehensive harvesting losses and to achieve satisfactory fermented, late harvested Whole crop wheat silage bu use of traditional balers. Application of acid based additve had no significant impact on starch degradation in this Experiment, and the effect on fermentation pattern was inconsistent.
Authors
C. Rikard Unelius S Ganji Christian Schiebe Tao Zhao Anna-Karin Borg-Karlson Bjørn Bohman Philip Weinstein Paal KrokeneAbstract
No abstract has been registered
Abstract
Yunnan pine is the most important tree species in SW China in both economical and ecological terms, but it is often killed by pine shoot beetles (Tomicus spp.). Tomicus beetles are secondary pests in temperate regions and the aggressiveness of the beetles in SW China is considered to be due to the warm subtropical climates as well as the beetles’ virulent fungal associates. Here, we assessed the virulence of three blue-stain fungi (Leptographium wushanense, L. sinense and Ophiostoma canum) associated with pine shoot beetles to Yunnan pine (Pinus yunnanensis) in SW China. Following fungal inoculation, we measured necrotic lesion lengths, antioxidant enzyme activities and monoterpene concentrations in the stem phloem of Yunnan pine. Leptographium wushanense induced twice as long lesions as L. sinense and O. canum, and all three fungi induced significantly longer lesions than sterile agar control inoculations. The activity of three tested antioxidant enzymes (peroxidase, polyphenol oxidase, and superoxide dismutase) increased after both fungal inoculation and control inoculation. However, L. wushanense and L. sinense generally caused a greater increase in enzyme activities than O. canum and the control treatment. Fungal inoculation induced stronger increases in six major monoterpenes than the control treatment, but the difference was significant only for some fungus-monoterpene combinations. Overall, our results show that L. wushanense and L. sinense elicit stronger defense responses and thus are more virulent to Yunnan pine than O. canum. The two Leptographium species may thus contribute to the aggressiveness of their beetle vectors and could damage Yunnan pine across SW China if they spread from the restricted geographical area they have been found in so far.
Authors
Paal KrokeneAbstract
No abstract has been registered
Authors
Håvard Steinshamn Karl-Christian Mahnert Inga Marie Aasen Berit Marie Blomstrand Sokratis Ptochos Spiridoula Athanasiadou Ian Woolsey Heidi L Enemark Kristin SørheimAbstract
No abstract has been registered
Authors
Håvard SteinshamnAbstract
No abstract has been registered
Authors
Line JohansenAbstract
No abstract has been registered
Authors
Line JohansenAbstract
No abstract has been registered
Abstract
No abstract has been registered