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.
2025
Abstract
Leather rot of strawberry fruit caused by the oomycete Phytophthora cactorum is detrimental to both freshly consumed and processed produce of this crop because of an off-odour flavour caused by two phenolic compounds, 4-ethylphenol (4-EP) and 4-ethyl-2-methoxyphenol (4-ethyl guaiacol, 4-EG). In this study, we have investigated differences in off-odour among strawberry genotypes and how the perception of the off-odour varies among people. Fruit of 13 strawberry genotypes, including five cultivars and eight selections, inoculated with P. cactorum were assessed by a sensory panel to determine differences in the characteristic leather rot odour. The content of aroma compounds, including the two phenolics, was analysed by headspace GC/MS and compared with sensory analysis. The amount of 4-EP and 4-EG varied greatly among the genotypes, and although the ones with the highest and lowest sensory scores also had the highest and lowest amounts of the phenolics, the correlation between their content and leather rot odour was not significant. The results clearly indicated that aroma components, of which the major ones were butanoic acid and acetic acid methyl and ethyl esters, hexanoic acid methyl ester and acetone, were important for the perception of leather rot off-odour. This suggests that natural strawberry aroma compounds can partly mask the characteristic leather rot odour independent of the level of the off-odour compounds. Consumer tests showed great variation in the ability of people to recognize the leather rot off-odour of strawberry fruit, especially at lower levels, but a few people were not able to detect the odour at all. The amount of contaminated strawberry fruit necessary for olfactory identification and to set an odour threshold of leather rot is further discussed.
Authors
Stephen Matthew Platt Siv Kari Lauvset Christine Groot Zwaaftink Richard Sanders Holger Lange Agneta Fransson Ingunn Skjelvan Are Olsen Gunnar Myhre Nicholas Roden Andrew Luke KingAbstract
No abstract has been registered
Authors
Barbara Baraibar Zahra Bitarafan José Luis González Andújar Eva Hernández Plaza Merel Hofmeijer Silvia Medina Susana Pascual Björn Ringselle Inés Santin Amber ten Brummelhuis Stanley ZiraAbstract
No abstract has been registered
Authors
Merijn van den Bosch Marta De Barba Andreas Zedrosser Nuria Selva Niko Balkenhol Luigi Maiorano Julien Renaud Gregor Simcic Ainhoa Graciarena Shane C. Frank Anne G. Hertel Aida Parres Hüseyin Ambarlı Andriy‐Taras Bashta Natalia Bragalanti Henrik Brøseth Mark Chynoweth Duško Ćirović Paolo Ciucci Csaba Domokos Aleksandar Dutsov Alper Ertürk Ancuta Fedorca Mihai Fedorca Stefano Filacorda Slavomir Finďo Luca Fumagalli Miguel de Gabriel Hernando Claudio Groff Snorre Hagen Bledi Hoxha Djuro Huber Otso Huitu Georgeta Ionescu Ovidiu Ionescu Klemen Jerina Alexandros Karamanlidis Jonas Kindberg Ilpo Kojola Alexander Kopatz Diana Krajmerová José Vicente López‐Bao Peep Männil Yorgos Mertzanis Anja Molinari‐Jobin Paolo Molinari Andrea Mustoni Javier Naves Sergey Ogurtsov Deniz Özüt Santiago Palazon Jasmin Pasic Ladislav Paule Milan Paunović Aleksandar Perovic Stefano Pesaro Vladimir Piminov Mihai I. Pop Maria Psaralexi Pierre Yves Quenette Georg Rauer Slaven Reljic Eloy Revilla Urmas Saarma Alexander Saveljev Ali Onur Sayar Cagan Sekercioglu Agnieszka Sergiel Tomaz Skrbinsek Michaela Skuban Anil Soyumert Aleksandar Stojanov Konstantin Tirronen Aleksandër Trajçe Igor Trbojević Tijana Trbojević Filip Zięba Diana Zlatanova Tomasz Zwijacz‐Kozica Jerrold L. BelantAbstract
Aim Large carnivores worldwide have experienced substantial range contractions due to human activities, though several species are recolonising parts of their historical range. We aimed to assess current and potential European brown bear ( Ursus arctos arctos ) habitat as well as habitat connectivity on a continental scale. Location The extended biogeographical regions of Europe, spanning from Portugal to central Russia, longitudinally, and from Norway to Türkiye, latitudinally. Excluding inland seas; this area covers 11,151,636 km 2 . Methods We assessed habitat suitability throughout the study area using an ensemble species distribution model with nine submodels, using data from 10 European bear populations and Türkiye. We used the resulting habitat suitability maps to conduct a least‐cost path connectivity analysis and an omnidirectional circuit connectivity analysis. Main Conclusions Habitat suitability was strongly associated with low percentages of agricultural cover, low percentages of human development, and proximity to forest. Of our entire study area, 37% (4.09 million km 2 ) is occupied or potentially suitable for bears. Connectivity analyses identified corridors that could facilitate movement among southern European bear populations, though agricultural land and human development limit connectivity between northern and southern European bear populations. Previous research estimated bears occupied 0.5 million km 2 across the European Union, while our results estimate 1.82 million km 2 of this part of our study area is potentially suitable for bears, though connectivity is limited. Our results inform conservation strategies and policy development for the future of brown bears in Europe, emphasising the need for transboundary conservation efforts.
Authors
Nina Johansen Hans Geir Eiken Simeon Rossmann May Bente Brurberg Monica Skogen Marta Bosque Fajardo Borghild Glorvigen Toril Sagen Eklo Finn-Arne Haugen Snorre Hagen Erik LysøeAbstract
Several aphid species pose serious treats to potato crops by causing direct damage to the plants and/or indirectly by transmitting viruses. Different morphological forms and phenotypic plasticity among aphids complicates taxonomy and identification and thus makes targeted pest management in potatoes challenging. To obtain an overview of aphids frequenting potato fields in Norway, we investigated seasonal and annual changes in aphid populations in five potato fields (58–64 °N) over a three-year period (2016–2018), using yellow pan traps. In total 2218 of the 6136 collected aphids were identified by traditional barcoding, meaning sequencing a ~ 650 fragment of the mitochondrial COI gene. This revealed 137 different species, of which 111 were identified at the species level. The remaining were identified only to the genus level, indicating potential novel species. The southernmost sampling location yielded the highest number of species and individual counts, although no clear correlations to climate factors (temperature/precipitation) was observed. Of the 111 species identified, at least 39 are potential vectors of potato virus Y (PVY) and nine species may also transmit potato virus A (PVA). Knowledge on virus vector and non-vector aphid abundance and phenology have the potential to improve pest management of potato cultivation.
Authors
Daniel Girma Mulat Dwi Susanti Germán Plata Arvind Kumar Samuel Oyola Idibu Joaquine Edward H. Cabezas-Garcia Vibeke Lind Claudia ArndtAbstract
No abstract has been registered
Authors
Gaius Vihowanou Joaquine Idibu Edward H. Cabezas-Garcia Jane Poole Jesse Kagai Linus Kiprotich Daniel Korir Chris Stephen Jones Constantine Bakyusa Katongole Mohamed Habibou Assouma Mutian Niu Luc Hippolyte Dossa Vibeke Lind Claudia ArndtAbstract
No abstract has been registered
Authors
Gaius S. Vihowanou Collins Odour Joaquine Idibu Edward H. Cabezas-Garcia Jesse Kagai Linus Kiprotich Constantine Bakyusa Katongole Mohamed Habibou Assouma Daniel Girma Mulat Mutian Niu Luc Hippolyte Dossa Vibeke Lind Claudia Arndt Sonja M. LeitnerAbstract
No abstract has been registered
Authors
Ndifreke Udo Gaius Vihowanou Joachine Idibu Edward H. Cabezas-Garcia Jesse Kagai Linus Kiprotich Vibeke Lind Sonja M. Leitner Claudia Arndt Daniel Girma MulatAbstract
No abstract has been registered
Authors
Joachine Idibu Collins Odour Gaius Vihowanou Stanislaus Udo Ndifreke Edward H. Cabezas-Garcia Vibeke Lind Daniel Girma Mulat Jesse Kagai Mutian Niu Luc Hippolyte Dossa Constantine Bakyusa Katongole Emmanuel Zziwa Claudia Arndt Sonja M. LeitnerAbstract
No abstract has been registered