Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Trygve Krekling"'
Publikováno v:
Experimental Gerontology. 41:1117-1125
Accumulation of oxidative stress-induced damage in brain tissue plays an important role in the pathogenesis of normal aging and neurodegenerative diseases. Neuronal oxidative damage typically increases with age in humans, and also in the invertebrate
Publikováno v:
Tree Physiology
When conifers such as Picea abies Karst. (Norway spruce) are attacked by insects or pathogens, they often respond by producing increased quantities of terpenoid oleoresin. This response can be mimicked in young P. abies seedlings by treatment with me
Publikováno v:
Proceedings of the National Academy of Sciences. 103:962-967
Research on aging shows that regulatory pathways of fertility and senescence are closely interlinked. However, evolutionary theories on social species propose that lifelong care for offspring can shape the course of senescence beyond the restricted c
The microstructure and tannin content of banana fruit and their likely influence on juice extraction
Publikováno v:
Journal of the Science of Food and Agriculture. 86:1908-1915
Extraction of banana juice using the traditional physical method is limited to Mbidde banana cultivars. Most other banana cultivars (including Matooke cultivars) do not produce juice by this method. A study of the microstructure and tannin content of
Publikováno v:
New Phytologist. 167:353-376
Conifers are long-lived organisms, and part of their success is due to their potent defense mechanisms. This review focuses on bark defenses, a front line against organisms trying to reach the nutrient-rich phloem. A major breach of the bark can lead
Autor:
Trygve Krekling, Paal Krokene, Anders Lönneborg, Nina Elisabeth Nagy, Carl Gunnar Fossdal, Halvor Solheim
Publikováno v:
Tree Physiology. 24:505-515
Polyphenolic parenchyma cells (PP cells) in Norway spruce (Picea abies (L.) Karst.) stem phloem play important roles in constitutive and inducible defenses. To determine whether anatomical and molecular changes in PP cells are correlated with tree re
Publikováno v:
Trees - Structure and Function. 18:1-9
The anatomical defense responses in stems of Norway spruce (Picea abies) clones of different resistance to pathogenic fungi were characterized over time and distance from small mechanical wounds or wounds inoculated with the root rot fungus Heterobas
Publikováno v:
New Phytologist. 159:677-690
Summary • Calcium oxalate (CaOx) crystals were studied in the secondary phloem of 46 conifer species from six families to characterize their distribution relative to defense. • Scanning electron microscopy, and polarized light microscopy of stem
Publikováno v:
Flora. 195:354-369
Summary A developmental and structural characterization of polyphenolic parenchyma cells (PP cells) in Norway spruce bark was undertaken as part of our studies on their role in defense against bark beetles and pathogenic fungi. PP cells form multiple
Autor:
Vincent R. Franceschi, Nina Elisabeth Nagy, Erik Christiansen, Trygve Krekling, Halvor Solheim
Publikováno v:
American Journal of Botany. 87:302-313
Wounding of Norway spruce by inoculation with sterile agar, or agar containing the pathogenic fungus Ceratocystis polonica, induced traumatic resin duct formation in the stem. Visible anatomical responses occurred in the cambium 6-9 d post-inoculatio