Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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    Development of a new biological control product for powdery mildew control in cereals
    Köhl, J. ; Plas, C.H. ; Bosch, G.B.M. van den; Goossen-van de Geijn, H.M. ; Haas, B.H. de; Schepers, H.T.A.M. ; Hilscher, U. ; Wikström, M. ; Zijlstra, C. - \ 2018
    In: Biocontrol products: From lab testing to product development. - IOBC-WPRS
    The structure of the Brassica napus seed microbiome is cultivar-dependent and affects the interactions of symbionts and pathogens
    Rybakova, Daria ; Mancinelli, Ricardo ; Wikström, M. ; Birch-Jensen, Ann-Sofie ; Postma, J. ; Ehlers, Ralf-Udo ; Goertz, Simon ; Berg, Gabriele - \ 2017
    Microbiome 5 (2017). - ISSN 2049-2618
    Background
    Although the plant microbiome is crucial for plant health, little is known about the significance of the seed microbiome. Here, we studied indigenous bacterial communities associated with the seeds in different cultivars of oilseed rape and their interactions with symbiotic and pathogenic microorganisms.
    Results
    We found a high bacterial diversity expressed by tight bacterial co-occurrence networks within the rape seed microbiome, as identified by llumina MiSeq amplicon sequencing. In total, 8362 operational taxonomic units (OTUs) of 40 bacterial phyla with a predominance of Proteobacteria (56%) were found. The three cultivars that were analyzed shared only one third of the OTUs. The shared core of OTUs consisted mainly of Alphaproteobacteria (33%). Each cultivar was characterized by having its own unique bacterial structure, diversity, and proportion of unique microorganisms (25%). The cultivar with the lowest bacterial abundance, diversity, and the highest predicted bacterial metabolic activity rate contained the highest abundance of potential pathogens within the seed. This data corresponded with the observation that seedlings belonging to this cultivar responded more strongly to the seed treatments with bacterial inoculants than other cultivars. Cultivars containing higher indigenous diversity were characterized as having a higher colonization resistance against beneficial and pathogenic microorganisms. Our results were confirmed by microscopic images of the seed microbiota.
    Conclusions
    The structure of the seed microbiome is an important factor in the development of colonization resistance against pathogens. It also has a strong influence on the response of seedlings to biological seed treatments. These novel insights into seed microbiome structure will enable the development of next generation strategies combining both biocontrol and breeding approaches to address world agricultural challenges.
    BIOCOMES (EU project 612713) develops new biological control products for Integrated Pest Management in agriculture and forestry
    Köhl, J. ; Zingg, D. ; Benuzzi, M. ; Ehlers, R.U. ; Perdrix, V. ; Eiben, U. ; Rosemeyer, V. ; Wikström, M. ; Azzaro, A. ; Glazer, I. ; O'Tuama, P. ; Tomanovic, Z. ; Tamm, L. ; Hauschild, R. ; Antonakou, M. ; Skrzecz, I. ; Cal, A. De; Teixidó, N. ; Jehle, J. ; Griffin, C. ; Beliën, T. ; Birnstingl, B. ; Berg, G. ; Simões, N. ; Causin, R. ; Muñoz, D. ; Eibl, R. - \ 2014
    BIOCOMES (EU-Projekt 612713) entwickelt neue biologische Pflanzenschutzmittel für IPM in Land- und Forstwirtschaft (BIOCOMES (EU project 612713) develops new biological control products for IPM in agriculture and forestry)
    Köhl, J. ; Zingg, D. ; Benuzzi, M. ; Ehlers, R.U. ; Perdrix, V. ; Eiben, U. ; Rosemeyer, V. ; Wikström, M. ; Azzaro, A. ; Glazer, I. ; O'Tuama, P. ; Tomanovic, Z. ; Tamm, L. ; Hauschild, R. ; Antonakou, M. ; Skrzecz, I. ; Cal, A. De; Teixidó, N. ; Jehle, J. ; Griffin, C. ; Beliën, T. ; Birnstingl, B. ; Berg, G. ; Simões, N. ; Causin, R. ; Muñoz, D. ; Eibl, R. - \ 2014
    In: Poster Biologischer Pflanzenschutz. 59. Deutsche Pflanzenschutztagung "Forschen – Wissen – Pflanzen schützen: Ernährung sichern!" 23. bis 26. September 2014, Freiburg. - Germany : Julius Kühn-Institut - p. 458 - 459.
    Black spots caused by Rhexocercosporidium carotae on cold stored carrots in Sweden
    Wikström, M. ; Ragnarsson, S. ; Jönsson, B. ; Köhl, J. ; Arvidsson, A.K. ; Burgers, S.L.G.E. ; Haas, B.H. de; Lombaers-van der Plas, C.H. - \ 2011
    In: Book of Abstracts. International Congress of Postharvest Pathology, Lleida, Spain, 11-14 April 2011. - Lleida, Spain : Universitat de Lleida, IRTA, Government of Catalonia - p. 72 - Oeed8.
    Black spots on carrots are a major problem in cold stored carrots leading to significant postharvest losses. Black spot symptoms can be caused by different pathogens. In Sweden, Rhexocercosporidium carotae (syn. Acrothecium carotae) was identified as the most important storage pathogen of carrots.
    Black spots caused by Rexocercosporidium carotae (syn. Acrothecium carotae) on cold stored carrots
    Wikström, M. ; Ragnarsson, S.A. ; Jönsson, B. ; Köhl, J. ; Arvdisson, A.K. ; Burgers, S.L.G.E. ; Groenenboom-de Haas, B.H. ; Haraldsson, T. ; Persson, L. - \ 2010
    STOVE: Seed treatments for organic vegetable production
    Schmitt, A. ; Jahn, M. ; Kromphardt, C. ; Krauthausen, H.J. ; Roberts, S.J. ; Wright, S.A.I. ; Amein, T. ; Forsberg, G. ; Tinivella, F. ; Gullino, M.L. ; Wikström, M. ; Wolf, J.M. van der; Groot, S.P.C. ; Werner, S. ; Koch, E. - \ 2008
    biologische landbouw - zaadproductie - onderzoeksprojecten - groenteteelt - organic farming - seed production - research projects - vegetable growing
    The aim of the EU-financed research project „STOVE“ (Seed Treatments for Organic Vegetable Production) is to evaluate different methods potentially suited for seed treatment of vegetables in organic farming regarding their efficacy, to optimise these methods, and where feasible to combine them with each other. Scientists from seven European research institutions and a producer of organic vegetable seeds carry out the project.
    Non-chemical methods of seed treatment for control of seed-borne pathogens on vegetables
    Amein, T. ; Wright, S.A.I. ; Wikström, M. ; Schmitt, A. ; Koch, E. ; Wolf, J. ; Groot, S.P.C. ; Forsberg, G. ; Werner, S. ; Jahn, M. - \ 2006
    biologische landbouw - zaadproductie - zaadbehandeling - gewasbescherming - biologische bestrijding - organic farming - seed production - seed treatment - plant protection - biological control
    Posterpresentation: The EU-project "Seed Treatments for Organic Seed Production" (QLK5-2002-02239 STOVE) was initiated in March 2003. The project aim is to evaluate non-chemical methods for control of seed-borne pathogens in organic vegetable production. Both fysical and biological methods are being investigated. The former include hot air, hot water and electron treatment, while the latter compromise formulated commercialised microbial preparations, resistance inducers, non-commercialised antagonistic micro-organisms and plant extracts/compounds of natural origin.
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