Simeon Rossmann
Research Scientist
Biography
I conduct research on various applied aspects of plant pathology. I have considerable experience working with Pectobacteriaceae, ubiquitous bacterial pathogens with a broad host range and the cause of potato soft rot and blackleg. I am particularly interested in insects associated with these bacteria and other bacterial plant pathogens in the field, as well as the molecular mechanisms underlying these diverse associations.
Recently, my work has focused on practical and bioinformatics implementations of metabarcoding or amplicon sequencing as a tool for the detection and identification of plant pathogenic fungi, oomycetes, nematodes and bacteria, as well as invasive plant and insect species.
I obtained my BSc and MSc from the University of Tübingen, where I discovered my passion for plant pathology at the Center for Plant Molecular Biology (ZMBP). During my PhD period (2015-2018), I studied potato soft rot in Norway under the main supervision of Prof. May Bente Brurberg (NIBIO/NMBU).
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
Abstract 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
Marte Persdatter Tangvik May Bente Brurberg Christer Magnusson Arne Stensvand Simeon RossmannAbstract
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Abstract
No abstract has been registered