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
Jana Sillmann Simone Russo Sebastian Sippel Kristina AlnesAbstract
No abstract has been registered
Authors
Marie-Laure Desprez-Loustau Marie Massot Maude Toïgo Tania Fort Ayse Gülden Aday Kaya Johanna Boberg Uwe Braun Xavier Capdevielle Thomas Cech Anne Chandelier Petya Christova Tamara Corcobado Tugba Dogmus Cyril Dutech Olivier Fabreguettes Julie Faivre d'Arcier Andrin Gross Marilia Horta Jung Eugenia Iturritxa Thomas Jung Corina Junker Levente Kiss Kaloyan Kostov Asko Lehtijarvi Aneta Lyubenova Benoit Marçais Jonas Oliva Funda Oskay Martin Pastirčák Katarína Pastircakova Dominique Piou Gilles Saint-Jean Arnaud Sallafranque Slavtcho Slavov Jan Stenlid Venche Talgø Susumu Takamatsu Ayco JM. TackAbstract
The spatial distribution and niche differentiation of three closely related species (Erysiphe alphitoides, Erysiphe quercicola and Erysiphe hypophylla) causing oak powdery mildew was studied at scales ranging from the European continent, where they are invasive, to a single leaf. While E. alphitoides was dominant at all scales, E. quercicola and E. hypophylla had restricted geographic, stand and leaf distributions. The large-scale distributions were likely explained by climatic factors and species environmental tolerances, with E. quercicola being more frequent in warmer climates and E. hypophylla in colder climates. The extensive sampling and molecular analyses revealed the cryptic invasion of E. quercicola in nine countries from which it had not previously been recorded. The presence of the three species was also strongly affected by host factors, such as oak species and developmental stage. Segregation patterns between Erysiphe species were observed at the leaf scale, between and within leaf surfaces, suggesting competitive effects.
Authors
Kristine S. Myhrer Ingunn M. Vågen Gerd Guren Gesine Schmidt Grethe Iren Andersen Borge Paula VarelaAbstract
No abstract has been registered
Authors
Tao Zhao Dineshkumar Kandasamy Paal Krokene Jingyuan Chen Jonathan Gershenzon Almuth HammerbacherAbstract
The bark beetle Ips typographus carries numerous fungi that could be assisting the beetle in colonizing live Norway spruce (Picea abies) trees. Phenolic defenses in spruce phloem are degraded by the beetle's major tree-killing fungus Endoconidiophora polonica, but it is unknown if other beetle associates can also catabolize these compounds. We compared the ability of five fungi commonly associated with I. typographus to degrade phenolic compounds in Norway spruce phloem. Grosmannia penicillata and Grosmannia europhioides were able to degrade stilbenes and flavonoids faster than E. polonica and grow on minimal growth medium with spruce bark constituents as the only nutrients. Furthermore, beetles avoided medium amended with phenolics but marginally preferred medium colonized by fungi. Taken together our results show that different bark beetle-associated fungi have complementary roles in degrading host metabolites and thus might improve this insect's persistence in well defended host tissues.
Authors
Gunn Strømeng Magne Nordang Skårn Kari Ørstad Arne Stensvand Katherine Ann Gredvig Nielsen May Bente BrurbergAbstract
No abstract has been registered
Authors
Guro Brodal Heidi Røsok Bye May Bente Brurberg Inger Sundheim Fløistad Øyvind Meland Edvardsen Venche TalgøAbstract
No abstract has been registered
Authors
Guro BrodalAbstract
No abstract has been registered
Abstract
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No abstract has been registered
Abstract
No abstract has been registered