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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SWEEPER - De paprikaplukrobot
Balendonck, Jos - \ 2018
Final DROPSA Project Meeting
Tol, Rob van - \ 2018
Strategies to develop effective, innovative and practical approaches to protect major European fruit crops frompests and pathogens
Efficiency of organic stream conversion by black soldier fly larvae: a review of the scientific literature
Bosch, Guido - \ 2018
Participation through place-based e-tools : A valuable resource for urban green infrastructure governance?
Steen Møller, Maja ; Olafsson, Anton ; Vierikko, Kati ; Sehested, Karina ; Elands, Birgit ; Buijs, Arjen ; Konijnendijk van den Bosch, Cecil - \ 2018
Urban Forestry and Urban Greening (2018). - ISSN 1618-8667 - 9 p.
Digital tools - E-tools - Participatory governance - Place - Urban Green space

Digital communication tools for information sharing are being increasingly used in governance, including green space governance and natural resource management and planning. Citizens’ resources in the form of knowledge, skills, as well as their collaboration with authorities have been identified in the governance literature as crucial elements in sustainable development. Technical advancement in internet communication technology (ICT) presents novel opportunities for engaging and leveraging civic knowledge and skills into different levels of governance. These options are still largely unexplored in governance research on urban green infrastructure (UGI). In this paper, we analyse three different digital tools (e-tools) from the perspective of a Scandinavian planning context. We explore how e-tools can support UGI governance and the perceived barriers. The e-tools explored are three digital platforms with a focus on public participation related to UGI. The three e-tools are map-based, i.e., users share information on digital maps: so-called Volunteered Geographic Information. Here, we call them place-based e-tools. We explore and analyse their adoption into UGI governance, the institutional contexts that affect them and also discuss potential of e-tools in place-based governance. Our findings indicate that the analysed tools all facilitate UGI governance in terms of engaging citizens in use, management, and planning of UGI. However, there are challenges to be aware of, such as the digital divide and the importance of clear participatory frameworks. We conclude that place-based e-tools have potential for UGI governance and that there is potential to strengthen links to ‘place’, while continuously testing and challenging new opportunities as technology rapidly develops.

Een toekomstvisie voor het Brabantse platteland
Bakker, Martha - \ 2018
Lezing in het Provinciehuis in Den Bosch voor beleidsmakers in natuurbeheer
Exploring options to recycle and prevent phosphorus waste in a food system
Kernebeek, H.R.J. van; Oosting, S.J. ; Ittersum, M.K. van; Ripoll Bosch, R. ; Boer, I.J.M. de - \ 2018
In: Book of abstracts of the 69th Annual Meeting of the European Federation of Animal Science. - Wageningen : Wageningen Academic Publishers (Book of abstracts 24) - ISBN 9789086863235 - p. 420 - 420.
A systematic review of research on biodiversity in European livestock systems
Kok, A. ; Boer, I.J.M. de; Ripoll Bosch, R. - \ 2018
In: Book of Abstracts of the 69th Annual Meeting of the European Federation of Animal Science. - Wageningen Academic Publishers (EAAP Book of Abstracts ) - ISBN 9789086863235 - p. 342 - 342.
The decline of biodiversity is a major concern to scientists, society, and policy makers in the European union (EU). The EU Biodiversity Strategy (2010) aims to halt the loss of biodiversity in the EU by 2020. One target to reach this aim is to increase the contribution of agriculture to maintain and enhance biodiversity. According to reports, however, no significant overall progress has been made to meet this target. Moreover, agriculture is both reported to reduce and to enhance biodiversity. To enhance biodiversity in agriculture, we need to understand how biodiversity is measured in the existing studies, and to map relations between agricultural land use and biodiversity. We aimed to
(1) review indicators used in science to measure biodiversity in EU livestock systems, and (2) to review described effects of livestock on biodiversity. We conducted a systematic review in Scopus and Web of Science. The search for research articles that assessed impacts of livestock on biodiversity yielded 857 articles after deduplication, which was narrowed down to 163 relevant articles. Species abundance and species diversity were commonly used state indicators of biodiversity across scales. Modelling studies also used aggregated indicators with biodiversity values that were directly linked to land use. Most studies focussed on the impact of grazing ruminants on biodiversity, either for food production or nature conservation purposes. Pigs and poultry were mainly studied in relation to local ammonia emissions. Only few studies considered impacts of land use for feed production on biodiversity. We argue that the traditional pressure-state-response framework to categorize indicators of biodiversity does not provide clear actions to enhance biodiversity in agriculture. Instead, we propose the use of comparators (e.g. grazing intensity levels) in relation with state measures of biodiversity. This review can help to identify commonly used indicators of biodiversity, and provide insight in quantitative relations between agricultural land use and biodiversity.
Nicotiana benthamianaα-galactosidase A1.1 can functionally complement human α-galactosidase A deficiency associated with Fabry disease
Kytidou, Kassiani ; Beekwilder, Jules ; Artola, Marta ; Meel, Eline van; Wilbers, Ruud H.P. ; Moolenaar, Geri F. ; Goosen, Nora ; Ferraz, Maria J. ; Katzy, Rebecca ; Voskamp, Patrick ; Florea, Bogdan I. ; Hokke, Cornelis H. ; Overkleeft, Herman S. ; Schots, Arjen ; Bosch, Dirk ; Pannu, Navraj ; Aerts, Johannes M.F.G. - \ 2018
Journal of Biological Chemistry 293 (2018)26. - ISSN 0021-9258 - p. 10042 - 10058.

α-Galactosidases (EC are retaining glycosidases that cleave terminal α-linked galactose residues from glycoconjugate substrates. α-Galactosidases take part in the turnover of cell wall-associated galactomannans in plants and in the lysosomal degradation of glycosphingolipids in animals. Deficiency of human α-galactosidase A (α-Gal A) causes Fabry disease (FD), a heritable, X-linked lysosomal storage disorder, characterized by accumulation of globotriaosylceramide (Gb3) and globotriaosylsphingosine (lyso-Gb3). Current management of FD involves enzyme-replacement therapy (ERT). An activitybased probe (ABP) covalently labeling the catalytic nucleophile of α-Gal A has been previously designed to study α-galactosidases for use in FD therapy. Here, we report that this ABP labels proteins in Nicotiana benthamiana leaf extracts, enabling the identification and biochemical characterization of an N. benthamiana α-galactosidase we name here A1.1 (gene accession ID GJZM-1660). The transiently overexpressed and purified enzyme was a monomer lacking N-glycans and was active toward 4-methylumbelliferyl-α-D-galactopyranoside substrate (Km = 0.17 mM) over a broad pH range. A1.1 structural analysis by X-ray crystallography revealed marked similarities with human α-Gal A, even including A1.1's ability to hydrolyze Gb3 and lyso-Gb3, which are not endogenous in plants. Of note, A1.1 uptake into FD fibroblasts reduced the elevated lyso-Gb3 levels in these cells, consistent with A1.1 delivery to lysosomes as revealed by confocal microscopy. The ease of production and the features of A1.1, such as stability over a broad pH range, combined with its capacity to degrade glycosphingolipid substrates, warrant further examination of its value as a potential therapeutic agent for ERT-based FD management.

Evidence of Vitamin D synthesis in insects exposed to UVb light
Oonincx, D.G.A.B. ; Keulen, P. van; Finke, M.D. ; Baines, F.M. ; Vermeulen, M. ; Bosch, G. - \ 2018
Scientific Reports 8 (2018)1. - ISSN 2045-2322

Vertebrates obtain the prohormone vitamin D primarily by endogenous cutaneous synthesis under ultraviolet b (UVb) exposure. To date, endogenous synthesis of vitamin D in insects has never been investigated. In an initial experiment, we exposed four insect species which differ in ecology and morphology (migratory locusts, house crickets, yellow mealworms and black soldier fly larvae (BSFL)) to a low irradiance UVb source. In a second experiment we exposed these species to a higher UV irradiance, and in a third we tested the effect of exposure duration on vitamin D concentrations in yellow mealworms. Low irradiance UVb tended to increase vitamin D3 levels in house crickets, vitamin D2 levels in BSFL and vitamin D2 and D3 in yellow mealworms. Higher UVb irradiance increased vitamin D3 levels in all species but BSFL. Both BSFL and migratory locusts had increased vitamin D2 levels. Longer UVb exposure of yellow mealworms increased vitamin D2 and increased vitamin D3 until a plateau was reached at 6400 IU/kg. This study shows that insects can synthesize vitamin D de novo and that the amounts depend on UVb irradiance and exposure duration.

Review of the methodologies used to derive groundwater characteristics for a specific area in The Netherlands
Ritzema, H.P. ; Heuvelink, G.B.M. ; Heinen, M. ; Bogaart, P.W. ; Bolt, F.J.E. van der; Hack-ten Broeke, M.J.D. ; Hoogland, T. ; Knotters, M. ; Massop, H.T.L. ; Vroon, H.R.J. ; Bosch, H. van den - \ 2018
Geoderma Regional 14 (2018). - ISSN 2352-0094
Hydropedology - In-situ measurements - Phreatic groundwater table - Spatial interpolation - Temporal aggregation

In this paper, we analyze the methods that are used in The Netherlands to upscale in-situ groundwater measurements in time and in space, and how the selected combinations of upscaling methods affect the resulting groundwater characteristic. In The Netherlands, a three-step approach is used to obtain groundwater characteristics for a specific area: (1) in-situ monitoring of the water table depth; (2) temporal upscaling; and (3) spatial interpolation and aggregation. The three-step approach is, however, not standardized, but a combination of the following methods is used: (i) four methods to measure/monitor the phreatic water table; (ii) four methods for temporal aggregation; and (iii) four methods for spatial interpolation and/or aggregation. Over the past sixty years, several combinations of these methods have been used. Our review shows that the use of these different combinations in the approach to measure and interpret water table depths has resulted in significant systematic differences in the corresponding groundwater characteristics and that there are many sources of potential error. Error in the in-situ measurement of the water table depth can be as high as 1 m. Errors in the temporal aggregation are in the range of 10 to 20 cm and for the spatial interpolation between 20 and 50 cm. We show that there has been no systematic assessment of how these errors influence the resulting groundwater characterization. Thus, we cannot answer the question of whether drought stress in The Netherlands is under- or overestimated. Based on these findings we give recommendations for a systematic approach to groundwater characterizations studies that can minimize the impact of errors.

Gapless genome assembly of the potato and tomato early blight pathogen alternaria solani
Wolters, Pieter J. ; Faino, Luigi ; Bosch, Trudy B.M. Van Den; Evenhuis, Bert ; Visser, Richard G.F. ; Seidl, Michael F. ; Vleeshouwers, Vivianne G.A.A. - \ 2018
Molecular Plant-Microbe Interactions 31 (2018)7. - ISSN 0894-0282 - p. 692 - 694.

The Alternaria genus consists of saprophytic fungi as well as plant-pathogenic species that have significant economic impact. To date, the genomes of multiple Alternaria species have been sequenced. These studies have yielded valuable data for molecular studies on Alternaria fungi. However, most of the current Alternaria genome assemblies are highly fragmented, thereby hampering the identification of genes that are involved in causing disease. Here, we report a gapless genome assembly of A. solani, the causal agent of early blight in tomato and potato. The genome assembly is a significant step toward a better understanding of pathogenicity of A. solani.

Closing the phosphorus cycle in a food system : insights from a modelling exercise
Kernebeek, H.R.J. van; Oosting, S.J. ; Ittersum, M.K. van; Ripoll-Bosch, R. ; Boer, I.J.M. de - \ 2018
Animal 12 (2018)8. - ISSN 1751-7311 - p. 1755 - 1765.
animal production - human diets - optimisation model - phosphorus recycling - phosphorus use

Mineral phosphorus (P) used to fertilise crops is derived from phosphate rock, which is a finite resource. Preventing and recycling mineral P waste in the food system, therefore, are essential to sustain future food security and long-term availability of mineral P. The aim of our modelling exercise was to assess the potential of preventing and recycling P waste in a food system, in order to reduce the dependency on phosphate rock. To this end, we modelled a hypothetical food system designed to produce sufficient food for a fixed population with a minimum input requirement of mineral P. This model included representative crop and animal production systems, and was parameterised using data from the Netherlands. We assumed no import or export of feed and food. We furthermore assumed small P soil losses and no net P accumulation in soils, which is typical for northwest European conditions. We first assessed the minimum P requirement in a baseline situation, that is 42% of crop waste is recycled, and humans derived 60% of their dietary protein from animals (PA). Results showed that about 60% of the P waste in this food system resulted from wasting P in human excreta. We subsequently evaluated P input for alternative situations to assess the (combined) effect of: (1) preventing waste of crop and animal products, (2) fully recycling waste of crop products, (3) fully recycling waste of animal products and (4) fully recycling human excreta and industrial processing water. Recycling of human excreta showed most potential to reduce P waste from the food system, followed by prevention and finally recycling of agricultural waste. Fully recycling P could reduce mineral P input by 90%. Finally, for each situation, we studied the impact of consumption of PA in the human diet from 0% to 80%. The optimal amount of animal protein in the diet depended on whether P waste from animal products was prevented or fully recycled: if it was, then a small amount of animal protein in the human diet resulted in the most sustainable use of P; but if it was not, then the most sustainable use of P would result from a complete absence of animal protein in the human diet. Our results apply to our hypothetical situation. The principles included in our model however, also hold for food systems with, for example, different climatic and soil conditions, farming practices, representative types of crops and animals and population densities.

Development and validation of IPM strategies for the cultivation of cisgenically modified late blight resistant potato
Kessel, Geert J.T. ; Mullins, Ewen ; Evenhuis, Albartus ; Stellingwerf, Jeroen ; Cortes, Vilma Ortiz ; Phelan, Sinead ; Bosch, Trudy van den; Förch, Marieke G. ; Goedhart, Paul ; Voet, Hilko van der; Lotz, Lambertus A.P. - \ 2018
European Journal of Agronomy 96 (2018). - ISSN 1161-0301 - p. 146 - 155.
Cisgenic modification - GM potato - Host resistance - Integrated pest management - Phytophthora infestans
Potato late blight disease remains the primary stressor of commercial potato production across the EU, typically requiring >10 fungicide applications per growing season to offset crop losses. In response, the goal of this study was to test and validate a novel, more durable, control strategy for potato late blight. This IPM2.0 strategy is based on the principles of Integrated Pest Management (IPM) which sees the deployment of a late blight resistant potato genotype, a cisgenically modified, Desiree based resistant potato line here, in conjunction with pathogen population monitoring for virulence to the resistance genes (R genes) deployed and a “do not spray unless”, low input fungicide spray strategy. Field evaluations were completed in the Netherlands and in Ireland in 2013, 2014 and in Ireland in 2015. Comparators used in this study included the original but susceptible potato variety Desiree and the conventional but highly resistant variety Sarpo Mira. The novel IPM2.0 strategy was compared to local common practice (fungicide applications on a near weekly basis) and an untreated control. Overall, the IPM2.0 control strategy validated here reduced the average fungicide input by 80–90% without compromising control efficacy. Corresponding environmental side-effects were reduced proportionally. The results underline the pragmatic role host resistance can provide to commercial potato production systems and to society at large if employed as part of an integrated late blight control system.
Associations of omega-3 fatty acid supplement use with cardiovascular disease risks meta-analysis of 10 trials involving 77 917 individuals
Aung, Theingi ; Halsey, Jim ; Kromhout, Daan ; Gerstein, Hertzel C. ; Marchioli, Roberto ; Tavazzi, Luigi ; Geleijnse, Johanna M. ; Rauch, Bernhard ; Ness, Andrew ; Galan, Pilar ; Chew, Emily Y. ; Bosch, Jackie ; Collins, Rory ; Lewington, Sarah ; Armitage, Jane ; Clarke, Robert - \ 2018
JAMA Cardiology 3 (2018)3. - ISSN 2380-6583 - p. 225 - 234.
IMPORTANCE Current guidelines advocate the use of marine-derived omega-3 fatty acids supplements for the prevention of coronary heart disease and major vascular events in people with prior coronary heart disease, but large trials of omega-3 fatty acids have produced conflicting results. OBJECTIVE To conduct ameta-analysis of all large trials assessing the associations of omega-3 fatty acid supplements with the risk of fatal and nonfatal coronary heart disease and major vascular events in the full study population and prespecified subgroups. DATA SOURCES AND STUDY SELECTION This meta-analysis included randomized trials that involved at least 500 participants and a treatment duration of at least 1 year and that assessed associations of omega-3 fatty acids with the risk of vascular events. DATA EXTRACTION AND SYNTHESIS Aggregated study-level datawere obtained from 10 large randomized clinical trials. Rate ratios for each trial were synthesized using observed minus expected statistics and variances. Summary rate ratios were estimated by a fixed-effects meta-analysis using 95%confidence intervals for major diseases and 99%confidence intervals for all subgroups. MAIN OUTCOMES AND MEASURES The main outcomes included fatal coronary heart disease, nonfatalmyocardial infarction, stroke, major vascular events, and all-cause mortality, as well as major vascular events in study population subgroups. RESULTS Of the 77 917 high-risk individuals participating in the 10 trials, 47 803 (61.4%) were men, and the mean age at entry was 64.0 years; the trials lasted a mean of 4.4 years. The associations of treatment with outcomes were assessed on 6273 coronary heart disease events (2695 coronary heart disease deaths and 2276 nonfatalmyocardial infarctions) and 12 001 major vascular events. Randomization to omega-3 fatty acid supplementation (eicosapentaenoic acid dose range, 226-1800mg/d) had no significant associations with coronary heart disease death (rate ratio [RR], 0.93; 99%CI, 0.83-1.03; P = .05), nonfatal myocardial infarction (RR, 0.97; 99%CI, 0.87-1.08; P = .43) or any coronary heart disease events (RR, 0.96; 95%CI, 0.90-1.01; P = .12). Neither did randomization to omega-3 fatty acid supplementation have any significant associations with major vascular events (RR, 0.97; 95% CI, 0.93-1.01; P = .10), overall or in any subgroups, including subgroups composed of persons with prior coronary heart disease, diabetes, lipid levels greater than a given cutoff level, or statin use. CONCLUSIONS AND RELEVANCE This meta-analysis demonstrated that omega-3 fatty acids had no significant association with fatal or nonfatal coronary heart disease or any major vascular events. It provides no support for current recommendations for the use of such supplements in people with a history of coronary heart disease.
Efficiency of organic stream conversion by black soldier fly larvae: a review of the scientific literature
Bosch, G. ; Veenenbos, M.E. ; Zanten, H.H.E. van; Meijer, N.P. ; Fels-Klerx, H.J. van der; Loon, J.J.A. van - \ 2018
Journal of Insects as Food and Feed 4 (2018)supplement 1. - ISSN 2352-4588 - p. S44 - S44.
Can insects synthesize vitamin D after exposure to ultraviolet light?
Oonincx, D.G.A.B. ; Keulen, P. van; Finke, M.D. ; Baines, F.M. ; Vermeulen, M. ; Bosch, G. - \ 2018
Journal of Insects as Food and Feed 4 (2018)Supplement 1. - ISSN 2352-4588 - p. S14 - S14.
Black soldier fly larvae to upcycle organic streams: a review of the scientific literature
Bosch, G. ; Veenenbos, M.E. ; Zanten, H.H.E. van; Meijer, N.P. ; Fels-Klerx, H.J. van der; Loon, J.J.A. van - \ 2018
Hoe ongezond is het om het voedsel van je huisdier zelf op te eten?
Bosch, Guido - \ 2018
The evolving protein landscape for pet foods
Bosch, G. - \ 2018
PETS International & Global Pets Community B.V.
Feed processing
Poel, A.F.B. van der; Vries, S. de; Bosch, G. - \ 2018
In: Feed evaluation science / Moughan, Paul J., Hendriks, Wouter H., Wageningen : Wageningen Academic Publishers - ISBN 9789086863099 - p. 295 - 336.
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