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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Status of hormones and painkillers in wastewater effluents across several European states—considerations for the EU watch list concerning estradiols and diclofenac
Schröder, P. ; Helmreich, B. ; Škrbić, B. ; Carballa, M. ; Papa, M. ; Pastore, C. ; Emre, Z. ; Oehmen, A. ; Langenhoff, A. ; Molinos, M. ; Dvarioniene, J. ; Huber, C. ; Tsagarakis, K.P. ; Martinez-Lopez, E. ; Pagano, S.M. ; Vogelsang, C. ; Mascolo, G. - \ 2016
Environmental Science and Pollution Research 23 (2016)13. - ISSN 0944-1344 - p. 12835 - 12866.
Advanced technologies - Diclofenac - Effluent quality - Emerging pollutants - Ethinylestradiol - EU watch list - Pollutant removal

Present technologies for wastewater treatment do not sufficiently address the increasing pollution situation of receiving water bodies, especially with the growing use of personal care products and pharmaceuticals (PPCP) in the private household and health sector. The relevance of addressing this problem of organic pollutants was taken into account by the Directive 2013/39/EU that introduced (i) the quality evaluation of aquatic compartments, (ii) the polluter pays principle, (iii) the need for innovative and affordable wastewater treatment technologies, and (iv) the identification of pollution causes including a list of principal compounds to be monitored. In addition, a watch list of 10 other substances was recently defined by Decision 2015/495 on March 20, 2015. This list contains, among several recalcitrant chemicals, the painkiller diclofenac and the hormones 17β-estradiol and 17α-ethinylestradiol. Although some modern approaches for their removal exist, such as advanced oxidation processes (AOPs), retrofitting most wastewater treatment plants with AOPs will not be acceptable as consistent investment at reasonable operational cost. Additionally, by-product and transformation product formation has to be considered. The same is true for membrane-based technologies (nanofiltration, reversed osmosis) despite of the incredible progress that has been made during recent years, because these systems lead to higher operation costs (mainly due to higher energy consumption) so that the majority of communities will not easily accept them. Advanced technologies in wastewater treatment like membrane bioreactors (MBR) that integrate biological degradation of organic matter with membrane filtration have proven a more complete elimination of emerging pollutants in a rather cost- and labor-intensive technology. Still, most of the presently applied methods are incapable of removing critical compounds completely. In this opinion paper, the state of the art of European WWTPs is reflected, and capacities of single methods are described. Furthermore, the need for analytical standards, risk assessment, and economic planning is stressed. The survey results in the conclusion that combinations of different conventional and advanced technologies including biological and plant-based strategies seem to be most promising to solve the burning problem of polluting our environment with hazardous emerging xenobiotics.

F1 hybrid of cultivated apple (Malus x domestica) and European pear (Pyrus communis) with fertile F2 offspring
Fischer, T.C. ; Malnoy, M. ; Hofmann, T. ; Schwab, W. ; Palmieri, L. ; Wehrens, H.R.M.J. ; Schuch, L.A. ; Müller, M. ; Schimmelpfeng, H. ; Velasco, R. ; Martens, S. - \ 2014
Molecular Breeding 34 (2014)3. - ISSN 1380-3743 - p. 817 - 828.
nuclear-dna content - genetic-linkage maps - flow-cytometry - japanese pear - s-alleles - borkh. - diversity - rosaceae - markers - genome
The establishment of intergeneric hybrids for horticultural and agricultural crops is still a demanding task for breeding programmes. The aim of such approaches is to introduce new quality and resistance traits and to enlarge the gene pool. Recently, an F1 hybrid between Malus × domestica and Pyrus communis became available which arose from a breeding approach undertaken in the late 1980s by the breeder Max Zwintzscher (Cologne-Vogelsang). Unlike previous reports, viable and fertile F2 plants were obtained from this F1 hybrid line by author HS, providing a unique perspective not only for genomic, transcriptomic and metabolomic studies but also for advanced breeding strategies. Here, we give the first report on the confirmation and characterization of the F1 hybrid by phenotypic, genetic and biochemical means. The intergeneric hybrid shows an intermediary phenotype of leaves, flowers and fruits, and some disorder of secondary shoot growth. Nuclear DNA content is also intermediary and corresponds to a diploid state. Apple and pear type rDNA as well as SI alleles from each genus were found. At the metabolic level, parallel biosynthesis of the apple dihydrochalcone phloridzin and of arbutin, a p-hydroquinone-glucoside typical for pear, take place leading to considerable concentrations of both in leaves. The overall data allow secure confirmation of the hybrid character and give a first insight into the hybrids genetics and physiology.
Rheological properties and mechanical stability of new gel-entrapment systems applied in bioreactors
Vogelsang, C. ; Wijffels, R.H. ; Ostgaard, K. - \ 2000
Biotechnology and Bioengineering 70 (2000). - ISSN 0006-3592 - p. 247 - 253.
The mechanical stability of gels applied for entrapment and retention of biocatalysts in bioreactors is of crucial importance for successful scale-up applications. Gel abrasion in agitated reactors will depend on liquid shear, bubble shear, and wall shear, as well as collisions between the gel particles. As a simplified standardized model system, abrasion of gel beads was studied in 1-m-high bubble columns with controlled aeration, and quantified by measuring the loss of gel material into solution. Gel beads were also taken out to measure stress-strain response during controlled compression. More general rheological properties of different gels were studied by applying a variety of regimes of controlled compression of standardized gel cylinders: Gel strength was measured by recording the fracture properties and the Young's modulus. Viscoelastic properties were revealed by recording creep during compression as well as recovery after compression. Oscillation tests up to 1000 cyclic compressions were applied to compare the fatigue of different gels. Results obtained for Ca-alginate gels, gels of chemically modified polyvinyl alcohol with stilbazolium groups (PVA-SbQ) as well as mixed gels of Ca-alginate and PVA-SbQ are compared with previously published data for -carrageenan, agar, and polyethylene glycol (PEG) gels. It is concluded that material fatigue rather than mechanical properties such as stiffness or fracture stress should be considered when selecting a suitable gel material on the basis of abrasion resistance. The very soft and superelastic PVA-SbQ gel showed no significant fatigue in mechanical tests and no abrasion was detected in the standardized model system used. Ca-alginate gels, however, showed severe irreversible changes due to fatigue at oscillating loads and creep at constant load. Due to their similarities with -carrageenan gels in mechanical tests, it is likely that Ca-alginate would also be sensitive to abrasion. Mixed gels of Ca-alginate and PVA-SbQ represent a complex system with intermediate properties, showing significant fatigue and creep, but elastic properties from the PVA-SbQ gel make it less sensitive than the pure Ca-alginate gel
Correlation between binding affinity and necrosis-inducing activity of mutant AVR9 peptide elicitors.
Kooman-Gersmann, M. ; Vogelsang, R. ; Vossen, P. ; Hooven, H.W. van den; Mahe, E. ; Honee, G. ; Wit, J.G.M. de - \ 1998
Plant Physiology 117 (1998). - ISSN 0032-0889 - p. 609 - 618.
Assignment of amino acid residues of the AVR9 peptide of Cladosporium fulvum that determine elicitor activity.
Kooman-Gersmann, M. ; Vogelsang, R. ; Hoogendijk, E.C.M. ; Wit, P.J.G.M. de - \ 1997
Molecular Plant-Microbe Interactions 10 (1997). - ISSN 0894-0282 - p. 821 - 829.
The biotrophic fungus Cladosporium fulvum circumvents Cf-4 mediated resistance by producing unstable AVR4 elicitors.
Joosten, M.H.A.J. ; Vogelsang, R. ; Cozijnsen, A.J. ; Verberne, M.A. ; Wit, P.J.G.M. de - \ 1997
The Plant Cell 9 (1997). - ISSN 1040-4651 - p. 1 - 13.
Interplay of fungal avirulence genes with plant resistance genes.
Wit, P.J.G.M. de; Vossen, J.P.M.J. ; Kooman-Gersmann, K. ; Vogelsang, R. ; Joosten, M.H.A.J. ; Honée, G. ; Vervoort, J.J.M. - \ 1996
In: Abstracts 3rd European Conf. on Fungal genetics, Münster, Germany - p. 13 - 13.
Structure-function relation studies on AVR9 and AVR4 elicitors of Cladosporium fulvum.
Wit, P.J.G.M. de; Vossen, J.P.M.J. ; Laugé, R. ; Kooman-Gersmann, M. ; Vogelsang, R. ; Joosten, M.H.A.J. ; Honée, G. ; Weide, R.L. ; Vervoort, J.J.M. - \ 1996
In: Abstracts 8th Int. Congr. Molecular-Plant-Microbe Interactions, Knoxville TN, USA (1996) S-52
Structure and function of avirulence genes and their interactions with plant resistance genes.
Wit, P.J.G.M. de; Kooman-Gersmann, M. ; Vogelsang, R. ; Joosten, M.H.A.J. ; Vervoort, J.J.M. - \ 1996
In: Abstracts Federation of the European Biochemical Society (FEBS) Congr., Barcelona, Spain - p. 196 - 196.
Structure-function relation studies on AVR9 and AVR4 elicitors of Cladosporium fulvum.
Wit, P.J.G.M. de; Kooman-Gersmann, M. ; Vogelsang, R. ; Joosten, M.H.A.J. ; Vossen, J.P.M.J. ; Weide, R.L. ; Laugé, R. ; Honée, G. ; Vervoort, J.J.M. - \ 1996
In: Biology of plant-microbe interactions, G. Stacy et al. (eds.). IS-MPMI, Minnesota, USA - p. 253 - 258.
Molecular basis of pathogenicity, avirulence and resistance in the interaction between the fungal pathogen Cladosporium fulvum and tomato.
Laugé, R. ; Weide, R. ; Joosten, M.H.A.J. ; Honée, G. ; Vossen, P. ; Kooman-Gersmann, M. ; Vogelsang, R. ; Buitink, J. ; Jabs, T. ; Vervoort, J.M. ; Wit, P.J.G.M. de - \ 1996
In: Abstracts Human Capital and Mobility Workshop on Molecular genetics of fungal plant pathogens & Signal perception and transduction in plant-fungus interactions, Córdoba, Spain - p. 15 - 21.
A high-affinity binding site for the AVR9 peptide elicitor of Cladosporium fulvum is required for the Cf-9 dependent resistance response.
Kooman-Gersmann, M. ; Vogelsang, R. ; Honée, G. ; Weide, R. ; Wit, P.J.G.M. de - \ 1996
In: Abstracts 8th Int. Congr. Molecular Plant-Microbe Interactions, Knoxville TN, USA - p. J21 - J21.
Cladosporium fulvum circumvents Cf-4-mediated resistance by producing an unstable AVR4 elicitor.
Joosten, M.H.A.J. ; Vogelsang, R. ; Cozijnsen, A.J. ; Verberne, M.C. ; Wit, P.J.G.M. de - \ 1996
In: Abstracts 8th Int. Congr. Molecular Plant-Microbe Interactions, Knoxville TN, USA (1996) B-49
Molecular and biochemical basis of communication between tomato and its fungal pathogen Cladosporium fulvum.
Wit, P.J.G.M. de; Laugé, R. ; Honée, G. ; Joosten, M.H.A.J. ; Vossen, J.P.M.J. ; Kooman-Gersmann, M. ; Vogelsang, R. ; Vervoort, J.J.M. - \ 1996
Antonie van Leeuwenhoek: : Nederlandsch tijdschrift voor hygiëne, microbiologie en serologie 71 (1996). - ISSN 0003-6072 - p. 137 - 141.
Avirulence genes and pathogenicity genes of the tomato pathogen Cladosporium fulvum.
Wit, P.J.G.M. de; Joosten, M.H.A.J. ; Vossen, P.J.M.J. ; Cozijnsen, A.J. ; Honée, G. ; Laugé, R. ; Vogelsang, R. ; Broek, H.W.J. van den; Vervoort, J.J.M. - \ 1995
In: Abstracts 18th Fungal Genetics Conf., Asilomar, CA, USA - p. 22 - 22.
Molecular basis of avirulence in the fungal tomato pathogen Cladosporium fulvum.
Honée, G. ; Joosten, M.H.A.J. ; Kooman-Gersmann, M. ; Vogelsang, R. ; Vossen, J.P.M.J. ; Vervoort, J.J.M. ; Wit, P.J.G.M. de - \ 1995
In: Abstracts BSPP Presidential Meeting on the gene-for-gene relationship: from enigma to exploitation, Warwick - p. 22 - 22.
Avirulence genes of Cladosporium fulvum and the receptors of their products in tomato and other plants.
Wit, P.J.G.M. de; Kooman-Gersmann, M. ; Vogelsang, R. ; Joosten, M.H.A.J. ; Honée, G. ; Vervoort, J.J.M. - \ 1995
In: Proc. 7th Congr. Australian Soc. Biochemistry and Molecular Biology vol. 27, Sydney (1995) sym 5-1
Interaction between Cladosporium fulvum avirulence genes Avr9 and Avr4 with their complementary tomato resistance genes Cf9 and Cf4.
Wit, P.J.G.M. de; Kooman-Gersmann, M. ; Vogelsang, R. ; Vossen, P.J.M.J. ; Cozijnsen, A.J. ; Honée, G. - \ 1995
European Journal of Plant Pathology 101 (1995)Suppl. 1. - ISSN 0929-1873 - p. 70 - 70.
Structure-function relationships of elicitors of the tomato pathogen Cladosporium fulvum.
Wit, P.J.G.M. de; Joosten, M.H.A.J. ; Honée, G. ; Vossen, P.J.M.J. ; Cozijnsen, A.J. ; Kooman-Gersmann, M. ; Vogelsang, R. - \ 1995
In: Keystone Symposia on Molecular & Cellular Biology, Journal of Cellular Biochemistry; Supplement 19B - p. 146 - 146.
Cf-dependent host defense responses in tomato induced by race-specific elicitors of the tomato pathogen Cladosporium fulvum.
Wit, P.J.G.M. de; Joosten, M.H.A.J. ; Honée, G. ; Vossen, P.J.M.J. ; Cozijnsen, A.J. ; Kooman-Gersmann, M. ; Vogelsang, R. - \ 1995
In: Keystone Symposia on Molecular & Cellular Biology, Journal of Cellular Biochemistry; Supplement 21A - p. 473 - 473.
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