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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Model of how plants sense zinc deficiency
Assuncao, A.G.L. ; Persson, D.P. ; Husted, S. ; Schjorring, J.K. ; Alexander, R.D. ; Aarts, M.G.M. - \ 2013
Metallomics 5 (2013)9. - ISSN 1756-5901 - p. 1110 - 1116.
bzip transcription factors - hyperaccumulator thlaspi-caerulescens - genetically encoded sensors - iron-deficiency - arabidopsis-thaliana - response element - dna recognition - cellular zinc - zip family - genes
Plants are capable of inducing a range of physico-chemical and microbial modifications of the rhizosphere which can mobilize mineral nutrients or prevent toxic elements from entering the roots. Understanding how plants sense and adapt to variations in nutrient availability is essential in order to develop plant-based solutions addressing nutrient-use-efficiency and adaptation to nutrient-limited or -toxic soils. Recently two transcription factors of the bZIP family (basic-region leucine zipper) have been identified in Arabidopsis and shown to be pivotal in the adaptation response to zinc deficiency. They represent not only the first regulators of zinc homeostasis identified in plants, but also a very promising starting-point that can provide new insights into the molecular basis of how plants sense and adapt to the stress of zinc deficiency. Considering the available information thus far we propose in this review a putative model of how plants sense zinc deficiency.
Metabolomic and elemental profiling of melon fruit quality as affected by genotype and environment
Bernillon, S. ; Biais, B. ; Deborde, C. ; Maucort, M. ; Cabasson, C. ; Gibon, Y. ; Hansen, T. ; Husted, S. ; Vos, R.C.H. de; Mumm, R. ; Jonker, H. ; Ward, J.L. ; Miller, S.J. ; Baker, J.M. ; Burger, J. ; Tadmor, Y. ; Beale, M.H. ; Schjoerring, J.K. ; Schaffer, A. ; Rolin, D. ; Hall, R.D. ; Moing, A. - \ 2013
Metabolomics 9 (2013)1. - ISSN 1573-3882 - p. 57 - 77.
cucumis-melo - tomato fruit - chemical-composition - functional genomics - plant metabolomics - mass-spectrometry - aroma volatiles - nitrate ratio - grape berry - amino-acid
Melon (Cucumis melo L.) is a global crop in terms of economic importance and nutritional quality. The aim of this study was to explore the variability in metabolite and elemental composition of several commercial varieties of melon in various environmental conditions. Volatile and non-volatile metabolites as well as mineral elements were profiled in the flesh of mature fruit, employing a range of complementary analytical technologies. More than 1,000 metabolite signatures and 19 mineral elements were determined. Data analyses revealed variations related to factors such as variety, growing season, contrasting agricultural management practices (greenhouse vs. field with or without fruit thinning) and planting date. Two hundred and ninety-one analytes discriminated two contrasting varieties, one from the var. inodorous group and the other from the var. cantaloupensis group. Two hundred and eighty analytes discriminated a short shelf-life from a mid-shelf-life variety within the var. cantaloupensis group. Three hundred and twenty-seven analytes discriminated two seasons, and two hundred and fifty-two analytes discriminated two contrasting agricultural management practices. The affected compound families greatly depended on the factor studied. The compositional variability of identified or partially identified compounds was used to study metabolite and mineral element co-regulation using correlation networks. The results confirm that metabolome and mineral element profiling are useful diagnostic tools to characterize the quality of fruits cultivated under commercial conditions. They can also provide knowledge on fruit metabolism and the mechanisms of plant response to environmental modifications, thereby paving the way for metabolomics-guided improvement of cultural practices for better fruit quality.
Extensive metabolic cross-talk in melon fruit revealed by spatial and developmental combinatorial metabolomics
Moing, A. ; Aharoni, A. ; Biais, B. ; Rogachev, I. ; Meir, S. ; Brodsky, L. ; Allwood, J.W. ; Erban, A. ; Dunn, W.B. ; Kay, S. ; Koning, S. ; Vos, C.H. de; Jonker, H.H. ; Mumm, R. ; Deborde, C. ; Maucourt, M. ; Bernillon, S. ; Gibon, Y. ; Hansen, T.H. ; Husted, S. ; Goodacre, R. ; Kopka, J. ; Schjoerring, J.K. ; Rolin, D. ; Hall, R.D. - \ 2011
New Phytologist 190 (2011)3. - ISSN 0028-646X - p. 683 - 696.
mass-spectrometry data - cucumis-melo - gas-chromatography - network analysis - aroma volatiles - gene-expression - tomato - plants - l. - identification
Celiac disease (CD) is a chronic inflammatory disease affecting the small intestinal mucosa. The causative agents have been identified as gluten proteins from wheat, barley and rye, and the only available treatment for CD patients is a lifelong gluten-free diet. Non-gluten containing cereals would be a valuable contribution to the gluten-free diet. In this respect, oats are a good choice. However, commercial lots of oat flakes and flour frequently are contaminated with wheat, barley and rye, and two studies have reported that some peptides derived from the gluten-like avenin storage proteins of oat can trigger an immune response in some CD patients. In the present study we have initiated the investigation whether all oat varieties contain similar amounts of potentially harmful sequences by biochemical and immunological methods. We confirm that commercial oat preparations are contaminated with other cereals that contain gluten or gluten-like proteins. Moreover, our results demonstrate that contamination-free oat varieties differ in their capacity to stimulate an avenin-sensitive gamma-gliadin specific T cell line derived from a patient with CD, indicative for differences in the two known avenin epitopes among oat varieties, implying that selection and breeding of completely safe oat varieties for all CD patients may be a realistic possibility.
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