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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Significance testing and genomic inflation factor using high-density genotypes or whole-genome sequence data
Berg, Sanne van den; Vandenplas, Jérémie ; Eeuwijk, Fred A. van; Lopes, Marcos S. ; Veerkamp, Roel F. - \ 2019
Journal of Animal Breeding and Genetics 136 (2019)6. - ISSN 0931-2668 - p. 418 - 429.
DNA analysis - genome-wide association studies - pig population - significance testing - whole-genome sequence

Significance testing for genome-wide association study (GWAS) with increasing SNP density up to whole-genome sequence data (WGS) is not straightforward, because of strong LD between SNP and population stratification. Therefore, the objective of this study was to investigate genomic control and different significance testing procedures using data from a commercial pig breeding scheme. A GWAS was performed in GCTA with data of 4,964 Large White pigs using medium density, high density or imputed whole-genome sequence data, fitting a genomic relationship matrix based on a leave-one–chromosome-out approach to account for population structure. Subsequently, genomic inflation factors were assessed on whole-genome level and the chromosome level. To establish a significance threshold, permutation testing, Bonferroni corrections using either the total number of SNPs or the number of independent chromosome fragments, and false discovery rates (FDR) using either the Benjamini–Hochberg procedure or the Benjamini and Yekutieli procedure were evaluated. We found that genomic inflation factors did not differ between different density genotypes but do differ between chromosomes. Also, the leave-one-chromosome-out approach for GWAS or using the pedigree relationships did not account appropriately for population stratification and gave strong genomic inflation. Regarding different procedures for significance testing, when the aim is to find QTL regions that are associated with a trait of interest, we recommend applying the FDR following the Benjamini and Yekutieli approach to establish a significance threshold that is adjusted for multiple testing. When the aim is to pinpoint a specific mutation, the more conservative Bonferroni correction based on the total number of SNPs is more appropriate, till an appropriate method is established to adjust for the number of independent tests.

Genotype by environment interactions in poultry breeding programs
Thinh Tuan, Chu - \ 2019
Wageningen University. Promotor(en): E. Norberg; H. Komen, co-promotor(en): J. Jensen; P. Berg; J.W.M. Bastiaansen. - Wageningen : Wageningen University - ISBN 9788793787803 - 199
Halotropism requires phospholipase Dζ1-mediated modulation of cellular polarity of auxin transport carriers
Korver, Ruud A. ; Berg, Thea van den; Meyer, Jessica A. ; Galvan-Ampudia, Carlos S. ; Tusscher, Kirsten H.W.J. ten; Testerink, Christa - \ 2019
Plant, Cell & Environment (2019). - ISSN 0140-7791

Endocytosis and relocalization of auxin carriers represent important mechanisms for adaptive plant growth and developmental responses. Both root gravitropism and halotropism have been shown to be dependent on relocalization of auxin transporters. Following their homology to mammalian phospholipase Ds (PLDs), plant PLDζ-type enzymes are likely candidates to regulate auxin carrier endocytosis. We investigated root tropic responses for an Arabidopsis pldζ1-KO mutant and its effect on the dynamics of two auxin transporters during salt stress, that is, PIN2 and AUX1. We found altered root growth and halotropic and gravitropic responses in the absence of PLDζ1 and report a role for PLDζ1 in the polar localization of PIN2. Additionally, irrespective of the genetic background, salt stress induced changes in AUX1 polarity. Utilizing our previous computational model, we found that these novel salt-induced AUX1 changes contribute to halotropic auxin asymmetry. We also report the formation of “osmotic stress-induced membrane structures.” These large membrane structures are formed at the plasma membrane shortly after NaCl or sorbitol treatment and have a prolonged presence in a pldζ1 mutant. Taken together, these results show a crucial role for PLDζ1 in both ionic and osmotic stress-induced auxin carrier dynamics during salt stress.

Bodemsignalen grasland: praktijkgids voor bodemmanagement op melkveebedrijven
Eekeren, Nick van; Philipsen, Bert ; Bokhorst, Jan ; Berg, Coen ter - \ 2019
Zutphen : Roodbont Publishers - ISBN 9789087402433 - 112
Sustainable placeshaping: what, why and how. Findings of the SUSPLACE program
Horlings, L.G. ; Axinte, L. ; Berg, J. van den; Felcis, E. ; Grenni, S. ; Husain, O. ; Nieto Romero, M. ; Papangelou, A. ; Pearson, K. ; Pisters, S. ; Quinn, M. ; Quinney, M. ; Rebelo, C. ; Roep, D. ; Soares da Silva, D. ; Soini, K. ; Šuvajevs, S. ; Taherzadeh, A. ; Vaart, G. van der; Valente, S. ; Vasta, A. ; Vrieze., A. de - \ 2019
Wageningen : SUSPLACE - ISBN 9789463951425 - 84
Cucumber mildew resistance: identification of cucumber genes involved in susceptibility and resistance to powdery and downy mildew
Berg, Jeroen A. - \ 2019
Wageningen University. Promotor(en): Y. Bai; R.G.F. Visser, co-promotor(en): H.J. Schouten. - Wageningen : Wageningen University - ISBN 9789463950572 - 255
Urinary Taurine Excretion and Risk of Late Graft Failure in Renal Transplant Recipients
Post, Adrian ; Said, Yusof ; Gomes-Neto, Antonio W. ; Krogt, Jennifer van der; Blaauw, Pim de; Berger, Stefan P. ; Geleijnse, Johanna M. ; Borgonjen, Karin ; Berg, Else van den; Goor, Harry van; Rimbach, Gerald ; Kema, Ido P. ; Tsikas, Dimitrios ; Heiner-Fokkema, Rebecca ; Bakker, Stephan J.L. - \ 2019
Nutrients 11 (2019)9. - ISSN 2072-6643
graft survival - renal transplant recipients - taurine - taurine excretion

Taurine is a sulfur containing nutrient that has been shown to protect against oxidative stress, which has been implicated in the pathophysiology leading to late graft failure after renal transplantation. We prospectively investigated whether high urinary taurine excretion, reflecting high taurine intake, is associated with low risk for development of late graft failure in renal transplant recipients (RTR). Urinary taurine excretion was measured in a longitudinal cohort of 678 stable RTR. Prospective associations were assessed using Cox regression analyses. Graft failure was defined as the start of dialysis or re-transplantation. In RTR (58% male, 53 ± 13 years old, estimated glomerular filtration rate (eGFR) 45 ± 19 mL/min/1.73 m2), urinary taurine excretion (533 (210-946) µmol/24 h) was significantly associated with serum free sulfhydryl groups (β = 0.126; P = 0.001). During median follow-up for 5.3 (4.5-6.0) years, 83 (12%) patients developed graft failure. In Cox regression analyses, urinary taurine excretion was inversely associated with graft failure (hazard ratio: 0.74 (0.67-0.82); P < 0.001). This association remained significant independent of potential confounders. High urinary taurine excretion is associated with low risk of late graft failure in RTR. Therefore, increasing taurine intake may potentially support graft survival in RTR. Further studies are warranted to determine the underlying mechanisms and the potential of taurine supplementation.

Use of genomic information to exploit genotype-by-environment interactions for body weight of broiler chicken in bio-secure and production environments
Chu, Thinh T. ; Bastiaansen, John W.M. ; Berg, Peer ; Romé, Hélène ; Marois, Danye ; Henshall, John ; Jensen, Just - \ 2019
Genetics, Selection, Evolution 51 (2019)1. - ISSN 0999-193X

Background: The increase in accuracy of prediction by using genomic information has been well-documented. However, benefits of the use of genomic information and methodology for genetic evaluations are missing when genotype-by-environment interactions (G × E) exist between bio-secure breeding (B) environments and commercial production (C) environments. In this study, we explored (1) G × E interactions for broiler body weight (BW) at weeks 5 and 6, and (2) the benefits of using genomic information for prediction of BW traits when selection candidates were raised and tested in a B environment and close relatives were tested in a C environment. Methods: A pedigree-based best linear unbiased prediction (BLUP) multivariate model was used to estimate variance components and predict breeding values (EBV) of BW traits at weeks 5 and 6 measured in B and C environments. A single-step genomic BLUP (ssGBLUP) model that combined pedigree and genomic information was used to predict EBV. Cross-validations were based on correlation, mean difference and regression slope statistics for EBV that were estimated from full and reduced datasets. These statistics are indicators of population accuracy, bias and dispersion of prediction for EBV of traits measured in B and C environments. Validation animals were genotyped and non-genotyped birds in the B environment only. Results: Several indications of G × E interactions due to environmental differences were found for BW traits including significant re-ranking, heterogeneous variances and different heritabilities for BW measured in environments B and C. The genetic correlations between BW traits measured in environments B and C ranged from 0.48 to 0.54. The use of combined pedigree and genomic information increased population accuracy of EBV, and reduced bias of EBV prediction for genotyped birds compared to the use of pedigree information only. A slight increase in accuracy of EBV was also observed for non-genotyped birds, but the bias of EBV prediction increased for non-genotyped birds. Conclusions: The G × E interaction was strong for BW traits of broilers measured in environments B and C. The use of combined pedigree and genomic information increased population accuracy of EBV substantially for genotyped birds in the B environment compared to the use of pedigree information only.

Associations between carcass weight uniformity and production measures on farm and at slaughter in commercial broiler flocks
Vasdal, Guro ; Granquist, Erik Georg ; Skjerve, Eystein ; Jong, Ingrid C. de; Berg, Charlotte ; Michel, Virginie ; Moe, Randi Oppermann - \ 2019
Poultry Science 98 (2019)10. - ISSN 0032-5791 - p. 4261 - 4268.
chicken - health - indicator - poultry - welfare

In poultry flocks, flock weight uniformity is often defined as the percent individuals within 10% of the mean body weight (BW) and the variability of this uniformity can be expressed as the CV of BW. Flock weight uniformity is a standardized and objective measured, and could potentially be used as a welfare indicator; however, little is known about the relationship between flock uniformity and other production measures on-farm or at slaughter. The aim of this study was to investigate the associations between carcass weight uniformity (CV of BW) and production measures on-farm and at slaughter in Norwegian commercial broiler flocks. A total of 45 randomly selected mixed-sex Ross 308 broiler flocks were visited prior to slaughter at 28 to 30 D of age (average slaughter age 30.6 D). All flocks were raised under similar farm management systems. The Welfare Quality protocol for broilers was used to assess different animal welfare indicators in each flock. All production data from the slaughterhouse were collected for each flock, including carcass weight uniformity (%), mortality (%), growth rate (g), feed conversion ratio (FCR), and rejected birds (%) in different rejection categories. Univariable and multivariable linear regression models were used to investigate the associations between flock weight uniformity and production and welfare measures. The results showed that flock uniformity varied from 11% to 18% between flocks within the same hybrid, similar management standards, and similar slaughter age (day 29 to 32). Poorer uniformity (i.e., high CV) was associated with increased first week mortality (P < 0.004, r = 1.48, increased total mortality (P < 0.013, r = 0.01), increased FCR (i.e., less efficient growth) (P < 0.024, r = 0.06), reduced growth rate (P < 0.0012, r = -0.01), and a reduced rejection rate at slaughter (P < 0.006, r = -0.01). The results show that flock uniformity varies across broiler flocks, and is associated with several production measures.

Dynamic virulence-related regions of the plant pathogenic fungus Verticillium dahliae display enhanced sequence conservation
Depotter, Jasper R.L. ; Shi-Kunne, Xiaoqian ; Missonnier, Hélène ; Liu, Tingli ; Faino, Luigi ; Berg, Grardy C.M. van den; Wood, Thomas A. ; Zhang, Baolong ; Jacques, Alban ; Seidl, Michael F. ; Thomma, Bart P.H.J. - \ 2019
Molecular Ecology 28 (2019)15. - ISSN 0962-1083 - p. 3482 - 3495.
comparative genomics - effector - genome evolution - mutagenesis - two-speed genome - Verticillium wilt

Plant pathogens continuously evolve to evade host immune responses. During host colonization, many fungal pathogens secrete effectors to perturb such responses, but these in turn may become recognized by host immune receptors. To facilitate the evolution of effector repertoires, such as the elimination of recognized effectors, effector genes often reside in genomic regions that display increased plasticity, a phenomenon that is captured in the two-speed genome hypothesis. The genome of the vascular wilt fungus Verticillium dahliae displays regions with extensive presence/absence polymorphisms, so-called lineage-specific regions, that are enriched in in planta-induced putative effector genes. As expected, comparative genomics reveals differential degrees of sequence divergence between lineage-specific regions and the core genome. Unanticipated, lineage-specific regions display markedly higher sequence conservation in coding as well as noncoding regions than the core genome. We provide evidence that disqualifies horizontal transfer to explain the observed sequence conservation and conclude that sequence divergence occurs at a slower pace in lineage-specific regions of the V. dahliae genome. We hypothesize that differences in chromatin organisation may explain lower nucleotide substitution rates in the plastic, lineage-specific regions of V. dahliae.

Primary human testicular PDGFRα+ cells are multipotent and can be differentiated into cells with Leydig cell characteristics in vitro
Eliveld, J. ; Berg, E.A. van den; Chikhovskaya, J.V. ; Daalen, S.K.M. van; Winter-Korver, C.M. de; Veen, F. van der; Repping, S. ; Teerds, K. ; Pelt, A.M.M. van - \ 2019
Human Reproduction 34 (2019)9. - ISSN 0268-1161 - p. 1621 - 1631.
mesenchymal stromal cell - PDGFRα - stem Leydig cell - steroidogenesis - testis

STUDY QUESTION: Is it possible to differentiate primary human testicular platelet-derived growth factor receptor alpha positive (PDGFRα+) cells into functional Leydig cells? SUMMARY ANSWER: Although human testicular PDGFRα+ cells are multipotent and are capable of differentiating into steroidogenic cells with Leydig cell characteristics, they are not able to produce testosterone after differentiation. WHAT IS KNOWN ALREADY: In rodents, stem Leydig cells (SLCs) that have been identified and isolated using the marker PDGFRα can give rise to adult testosterone-producing Leydig cells after appropriate differentiation in vitro. Although PDGFRα+ cells have also been identified in human testicular tissue, so far there is no evidence that these cells are true human SLCs that can differentiate into functional Leydig cells in vitro or in vivo. STUDY DESIGN, SIZE, DURATION: We isolated testicular cells enriched for interstitial cells from frozen-thawed fragments of testicular tissue from four human donors. Depending on the obtained cell number, PDGFRα+-sorted cells of three to four donors were exposed to differentiation conditions in vitro to stimulate development into adipocytes, osteocytes, chondrocytes or into Leydig cells. We compared their cell characteristics with cells directly after sorting and cells in propagation conditions. To investigate their differentiation potential in vivo, PDGFRα+-sorted cells were transplanted in the testis of 12 luteinizing hormone receptor-knockout (LuRKO) mice of which 6 mice received immunosuppression treatment. An additional six mice did not receive cell transplantation and were used as a control. PARTICIPANTS/MATERIALS, SETTING, METHODS: Human testicular interstitial cells were cultured to Passage 3 and FACS sorted for HLA-A,B,C+/CD34-/PDGFRα+. We examined their mesenchymal stromal cell (MSC) membrane protein expression by FACS analyses. Furthermore, we investigated lineage-specific staining and gene expression after MSC trilineage differentiation. For the differentiation into Leydig cells, PDGFRα+-sorted cells were cultured in either proliferation or differentiation medium for 28 days, after which they were stimulated either with or without hCG, forskolin or dbcAMP for 24 h to examine the increase in gene expression of steroidogenic enzymes using qPCR. In addition, testosterone, androstenedione and progesterone levels were measured in the culture medium. We also transplanted human PDGFRα+-sorted testicular interstitial cells into the testis of LuRKO mice. Serum was collected at several time points after transplantation, and testosterone was measured. Twenty weeks after transplantation testes were collected for histological examination. MAIN RESULTS AND THE ROLE OF CHANCE: From primary cultured human testicular interstitial cells at Passage 3, we could obtain a population of HLA-A,B,C+/CD34-/PDGFRα+ cells by FACS. The sorted cells showed characteristics of MSC and were able to differentiate into adipocytes, chondrocytes and osteocytes. Upon directed differentiation into Leydig cells in vitro, we observed a significant increase in the expression of HSD3B2 and INSL3. After 24 h stimulation with forskolin or dbcAMP, a significantly increased expression of STAR and CYP11A1 was observed. The cells already expressed HSD17B3 and CYP17A1 before differentiation but the expression of these genes were not significantly increased after differentiation and stimulation. Testosterone levels could not be detected in the medium in any of the stimulation conditions, but after stimulation with forskolin or dbcAMP, androstenedione and progesterone were detected in culture medium. After transplantation of the human cells into the testes of LuRKO mice, no significant increase in serum testosterone levels was found compared to the controls. Also, no human cells were identified in the interstitium of mice testes 20 weeks after transplantation.N/A. LIMITATIONS, REASONS FOR CAUTION: This study was performed using tissue from only four donors because of limitations in donor material. Because of the need of sufficient cell numbers, we first propagated cells to passage 3 before FACS of the desired cell population was performed. We cannot rule out this propagation of the cells resulted in loss of stem cell properties. WIDER IMPLICATIONS OF THE FINDINGS: A lot of information on Leydig cell development is obtained from rodent studies, while the knowledge on human Leydig cell development is very limited. Our study shows that human testicular interstitial PDGFRα+ cells have different characteristics compared to rodent testicular PDGFRα+ cells in gene expression levels of steroidogenic enzymes and potential to differentiate in adult Leydig cells under comparable culture conditions. This emphasizes the need for confirming results from rodent studies in the human situation to be able to translate this knowledge to the human conditions, to eventually contribute to improvements of testosterone replacement therapies or establishing alternative cell therapies in the future, potentially based on SLCs. STUDY FUNDING/COMPETING INTEREST(S): This study was funded by Amsterdam UMC, location AMC, Amsterdam, the Netherlands. All authors declare no competing interests.

Fruit and vegetable intake and risk of post trans plantation diabetes in renal transplant recipients
Gomes-Neto, António W. ; Osté, Maryse C.J. ; Sotomayor, Camilo G. ; Berg, Else V.D. ; Geleijnse, Johanna M. ; Gans, Reinold O.B. ; Bakker, Stephan J.L. ; Navis, Gerjan J. - \ 2019
Diabetes Care 42 (2019)9. - ISSN 0149-5992 - p. 1645 - 1652.

OBJECTIVE Posttransplantation diabetes mellitus (PTDM) contributes to risk for cardiovascular morbidity and mortality in renal transplant recipients (RTRs). In the general population, consumption of a diet containing few fruits and vegetables predisposes to type 2 diabetes. The role of diet as a potential modifiable risk factor for PTDM has not been explored. Our focus was to investigate the prospective associations of fruit and vegetable intake with risk of PTDM in stable RTRs. RESEARCH DESIGN AND METHODS We included 472 adult RTRs who had a functioning graft ≥1 year. Fruit and vegetable intake was assessed by using a 177-item food frequency questionnaire. PTDM was defined according the American Diabetes Association's diagnostic criteria for diabetes. RESULTS During 5.2 years of follow-up, 52 RTRs (11%) developed PTDM. Fruit intake was not associated with PTDM (hazard ratio [HR] 0.90 [95% CI 0.79-1.03] per 2log g/day; P = 0.13), whereas vegetable intake was inversely associated with PTDM (HR 0.77 [95% CI 0.63-0.94] per 2log g/day; P = 0.009). Mediation analyses revealed that 650% of the association between vegetable intake and PTDM was mediated by variations in key components of the metabolic syndrome (i.e., HDL cholesterol, triglycerides, and waist circumference) as determined by the National Cholesterol Education Program's Adult Treatment Panel III Expert Panel. CONCLUSIONS In this study vegetable intake, but not fruit intake, was associated with lower risk of PTDM in RTRs, likely largely through beneficial effects on key components of the metabolic syndrome. These findings further support accumulating evidence that supports a recommendation of higher vegetable intake by RTRs.

Exploring the functional role of the digital mucus glands and their secretions in tree frog attachment
Langowski, J.K.A. ; Singla, Saranshu ; Nyarko, Alex ; Schipper, H. ; Berg, Frank van den; Kaur, Sukhmanjot ; Astley, Henry C. ; Gussekloo, S.W.S. ; Dhinojwala, Ali ; Leeuwen, J.L. van - \ 2019
- 1 p.
Water flow in soils with heterogeneous macropore geometries
Faúndez Urbina, C.A. ; Dam, J.C. van; Hendriks, R.F.A. ; Berg, F. van den; Gooren, H.P.A. ; Ritsema, C.J. - \ 2019
Vadose Zone Journal 18 (2019)1. - ISSN 1539-1663

Heterogeneous macroporous geometries (HMGs) comprise unevenly distributed macropores with depth. A large variety of macropore distributions produce fast water flow and chemical transport that deviate from uniform flow. We analyzed the measured pressure head and outflow in column experiments with a uniform matrix (Exp. I), one central macropore (main bypass) (Exp. II), and HMG (Exp. III) and evaluated the performance of the models HYDRUS-1D and SWAP under these conditions. Two replicate soil columns were prepared with a 62-cm silty loam layer above a 5-cm sandy loam layer. Well-defined infiltration and drainage conditions were applied to top and bottom boundaries, respectively. Pressure head and outflow were measured at short time intervals, and calibration was performed by PEST. Experiment I was conducted to calibrate the matrix parameters and Exp. II to calibrate macropore parameters. In Exp. III, four dead-end macropores were created around the main bypass, and the models were run using the previously calibrated parameters, updating only the macropore geometry parameters. The results indicated that HMGs increased total macropore influx, especially in the internal catchment domain. Interaction between the internal catchment, main bypass, and matrix domains was necessary for explaining the change in cumulative outflow and outflow onset observations. The simulations with both models were accurate for HMG regarding pressure head and outflow. The implicit representation of HMGs by HYDRUS-1D improved outcomes for cumulative outflow, whereas the explicit representation by SWAP improved results for lateral mass transfer. The ability to model the effects of HMGs is essential for environmental and agricultural studies.

Effect of oat and soybean rich in distinct non-starch polysaccharides on fermentation, appetite regulation and fat accumulation in rat
Tian, Lingmin ; Scholte, Jan ; Scheurink, Anton J.W. ; Berg, Marco van den; Bruggeman, Geert ; Bruininx, Erik ; Vos, Paul de; Schols, Henk A. ; Gruppen, Harry - \ 2019
International Journal of Biological Macromolecules 140 (2019). - ISSN 0141-8130 - p. 515 - 521.
Butyric acid - Dietary fiber - Fat pad

Consumption of non-starch polysaccharides (NSP) is associated with reduced risk of obesity. This study aimed to compare the effects of cereals (oats) and legumes (soybean), rich in different classes of NSP, on appetite regulation and fat accumulation in rats. Soy pectin fermented more efficient than cereal arabinoxylan in rats. Soy pectin and oat β-glucan were utilized mainly in the caecum of rats. Only small amount of maltodextrin, cello-oligosaccharides and xylo-oligosaccharides were detected in the digesta. Caecal fermentation of soy pectin produced significantly higher concentration of short chain fatty acids (SCFAs) compared to the control. Retroperitoneal (RP) fat-pad weight was significantly lower for rats fed with soybean meal enriched diet than for controls. An inverse correlation between rat RP fat-pad weight and concentration (and proportion) of butyrate was observed. Consumption of soy pectin and oat β-glucan enriched foods to produce targeted SCFAs in vivo could be a potential strategy to lower fat mass accumulation and a potential tool to manage obesity.

Effect of market production on rural household food consumption: evidence from Uganda
Ntakyo, Proscovia Renzaho ; Berg, Marrit van den - \ 2019
Food Security 11 (2019)5. - ISSN 1876-4517 - p. 1051 - 1070.
Food security - Market-oriented production - Propensity score matching - Uganda

Food access is an important element of food security that has since long been a major concern of rural households. One intervention to improve food access has been increased promotion of market production in the hope that households will get increased income and access to food through the market rather than through self-sufficiency characteristic of subsistence production. We examine the effect of market production on household food consumption using a case of rice in western Uganda, where rice is largely a cash crop. Our analysis is based on propensity score matching and instrumental variable approach using survey data collected from 1137 rural households. We find evidence of negative significant effects of market production on calorie consumption; More commercialized households are more likely to consume less than the required calories per adult equivalent per day. This implies that the substitution effects due to higher shadow prices of food outweigh the income effects of additional crop sales. On the contrary, we find positive significant effects on household dietary diversity. We suggest a mixed approach combining policies targeted at market production as well as production for own consumption, and nutrition sensitization.

Data presented in the PhD thesis "Cucumber Mildew Resistance Identification of Cucumber Genes Involved in Susceptibility and Resistance to Powdery and Downy Mildew"
Berg, J.A. - \ 2019
cucumber - downy mildew - plant-pathogen interactions - powdery mildew - susceptibility genes
The aims of this thesis were to identify genes involved in cucumber-mildew interactions, in order to better understand these pathosystems, thus providing new leads for the breeding of mildew resistant cucumbers. As resistances against both PM and DM were previously shown to be usually recessive, special attention is given to the concept of susceptibility genes (S genes), loss-of-function alleles of which can contribute to effective and durable resistance.
Effect Of Ultra-Filtration After In Vitro Digestion Of Sustainable Food Proteins On SCFA Production By Microbiota Fermentation
Ariens, R.M.C. ; Bachrioui, Karim El; Berg-Somhorst, B.P.M. van de; Bastiaan-Net, S. ; Wichers, H.J. - \ 2019
Antihypertensive Activity Of Food Protein Hydrolysates From Sustainable Sources
Berg-Somhorst, B.P.M. van de; Bastiaan-Net, S. ; Evers, David ; Bachrioui, Karim El; Ariens, R.M.C. ; Wichers, H.J. - \ 2019
Antihypertensive Activity Of Food Protein Hydrolysates From Sustainable Sources
Berg-Somhorst, B.P.M. van de; Bastiaan-Net, S. ; Evers, David ; Bachrioui, Karim El; Ariens, R.M.C. ; Wichers, H.J. - \ 2019
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