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Jenčič B, Pongrac P, Vasić M, Starič P, Kelemen M, Regvar M. Gold-Assisted Molecular Imaging of Organic Tissue by MeV Secondary Ion Mass Spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2023; 34:2358-2364. [PMID: 37682634 PMCID: PMC10557134 DOI: 10.1021/jasms.3c00237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/12/2023] [Accepted: 08/30/2023] [Indexed: 09/10/2023]
Abstract
The quality of molecular imaging by means of MeV primary ion-induced secondary ion mass spectrometry by coating with gold was evaluated on different reference organic molecules and plant samples. The enhancement of the secondary ion yield was evident for the majority of the studied analytes, reaching the highest values at gold thicknesses between 0.5 and 2 nm, and increased the intensity up to 5-fold for reference samples and >2-fold for specific peaks within the plant sample. Improved propagation of the electric field due to the target potential on otherwise electrically insulating plant samples was also evident through improved image resolution and by reducing the background in mass spectra. However, detection of several molecules was significantly decreased at even at 1 nm thick gold layer. The results indicated that an optimized sequence of analysis is required to reliably interpret results.
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Affiliation(s)
- Boštjan Jenčič
- Jožef
Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
| | - Paula Pongrac
- Jožef
Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
- Biotechnical
Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia
| | - Mirjana Vasić
- Jožef
Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
- Jožef
Stefan Institute Postgraduate School, Jamova 39, 1000 Ljubljana, Slovenia
| | - Pia Starič
- Jožef
Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
- Biotechnical
Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia
| | - Mitja Kelemen
- Jožef
Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia
- Jožef
Stefan Institute Postgraduate School, Jamova 39, 1000 Ljubljana, Slovenia
| | - Marjana Regvar
- Biotechnical
Faculty, University of Ljubljana, Jamnikarjeva 101, 1000 Ljubljana, Slovenia
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Starič P, Remic L, Vogel-Mikuš K, Junkar I, Vavpetič P, Kelemen M, Pongrac P. Exploring the potential of cold plasma treatment followed by zinc-priming for biofortification of buckwheat sprouts. Front Nutr 2023; 10:1151101. [PMID: 37215205 PMCID: PMC10196170 DOI: 10.3389/fnut.2023.1151101] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 04/19/2023] [Indexed: 05/24/2023] Open
Abstract
Increasing the concentration of an element in edible produce (i.e., biofortification) can mitigate the element deficiency in humans. Sprouts are small but popular part of healthy diets providing vitamins and essential elements throughout the year. Element composition of sprouts can easily be amended, e.g., by soaking the grains in element-rich solution before germination (grain-priming). In addition, pre-treatment of grains to improve element translocation from the solution into the grain may further enhance the element concentration in the sprout. Cold plasma technique could provide such solution, as it increases wettability and water uptake of grains. Grains of common buckwheat (Fogopyrum esculentum Moench) were pre-treated/ untreated with cold plasma and soaked in ZnCl2 solution/pure water. Germination tests, α-amylase activity, grain hydrophilic properties and water uptake were assessed. Element composition of grain tissues and of sprouts was assessed by micro-particle-induced-X-ray emission and X-ray fluorescence spectroscopy, respectively. Grain-priming increased Zn concentration in shoots of common buckwheat sprouts more than five-times, namely from 79 to 423 mg Zn kg-1 dry weight. Cold plasma treatment increased grain wettability and water uptake into the grain. However, cold plasma pre-treatment followed by grain-priming with ZnCl2 did not increase Zn concentration in different grain tissues or in the sprouts more than the priming alone, but rather decreased the Zn concentration in sprout shoots (average ± standard error: 216 ± 6.13 and 174 ± 7.57 mg Zn kg-1 dry weight, respectively). When the fresh weight portion of whole sprouts (i.e., of roots and shoots) was considered, comparable average requirements of Zn, namely 24.5 % and 35 % for adult men and women would be satisfied by consuming cold plasma pre-treated and not pre-treated grains. Potential advantages of cold plasma pre-treatment need to be tested further, mainly to optimize the duration of soaking required to produce Zn-enriched sprouts.
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Affiliation(s)
- Pia Starič
- Jožef Stefan Institute, Ljubljana, Slovenia
- Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Lucija Remic
- Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Katarina Vogel-Mikuš
- Jožef Stefan Institute, Ljubljana, Slovenia
- Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Ita Junkar
- Jožef Stefan Institute, Ljubljana, Slovenia
| | | | | | - Paula Pongrac
- Jožef Stefan Institute, Ljubljana, Slovenia
- Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
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Deng G, Vu M, Korbas M, Bondici VF, Karunakaran C, Christensen D, Bart Lardner HA, Yu P. Distribution of Micronutrients in Arborg Oat (Avena sativa L.) Using Synchrotron X-ray Fluorescence Imaging. Food Chem 2023; 421:135661. [PMID: 37094404 DOI: 10.1016/j.foodchem.2023.135661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 02/05/2023] [Accepted: 02/06/2023] [Indexed: 02/25/2023]
Abstract
It is important to know the mineral distribution in cereal grains for nutritional improvement or genetic biofortification. Distributions and intensities of micro-elements (Mn, Fe, Cu, and Zn) and macro-elements (P, S, K and Ca) in Arborg oat were investigated using synchrotron-based on X-ray fluorescence imaging (XFI). Arborg oat provided by the Crop Development Center (CDC, Aaron Beattie) of the University of Saskatchewan for 2D X-ray fluorescence scans were measured at the BioXAS-Imaging beamline at the Canadian Light Source. The results show that the Ca and Mn were mainly localized in the aleurone layer and scutellum. P, K, Fe, Cu, and Zn were mainly accumulated in the aleurone layer and embryo. Particularly the intensities of P, K, Cu, and Zn in the scutellum were higher compared to other areas. S was also distributed in each tissue and its abundance in the sub-aleurone was the highest. In addition, the intensities of S and Cu were highest in the nucellar projection of the crease region. All these elements were also found in the pericarp but they were at lower levels than other tissues. Overall, the details of these experimental results can provide important information for micronutrient biofortification and processing strategies on oat through elemental mapping in Arborg oat.
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Affiliation(s)
- Ganqi Deng
- Department of Animal and Poultry Science, College of Agriculture and Bioresources, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada
| | - Miranda Vu
- Canadian Light Source Inc., 44 Innovation Boulevard, Saskatoon, SK S7N 2V3, Canada
| | - Malgorzata Korbas
- Canadian Light Source Inc., 44 Innovation Boulevard, Saskatoon, SK S7N 2V3, Canada; Department of Anatomy, Physiology and Pharmacology, University of Saskatchewan, 107 Wiggins Rd, Saskatoon, SK S7N 5E5, Canada
| | - Viorica F Bondici
- Canadian Light Source Inc., 44 Innovation Boulevard, Saskatoon, SK S7N 2V3, Canada
| | - Chithra Karunakaran
- Canadian Light Source Inc., 44 Innovation Boulevard, Saskatoon, SK S7N 2V3, Canada
| | - David Christensen
- Department of Animal and Poultry Science, College of Agriculture and Bioresources, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada
| | - H A Bart Lardner
- Department of Animal and Poultry Science, College of Agriculture and Bioresources, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada
| | - Peiqiang Yu
- Department of Animal and Poultry Science, College of Agriculture and Bioresources, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada.
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Principal Components and Cluster Analysis of Trace Elements in Buckwheat Flour. Foods 2023; 12:foods12010225. [PMID: 36613441 PMCID: PMC9818536 DOI: 10.3390/foods12010225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 12/29/2022] [Accepted: 12/31/2022] [Indexed: 01/05/2023] Open
Abstract
Essential trace elements are required at very low quantities in the human body but are essential for various physiological functions. Each trace element has a specific role and a lack of these elements can easily cause a threat to health and can be potentially fatal. In this study, inductively coupled plasma mass spectrometry (ICP-MS) and inductively coupled plasma atomic emission spectrometry (ICP-AES) were used to determine the content of trace metal elements Ca, Fe, Cu, Mg, Zn, Se, Mo, Mn, and Cd in buckwheat flour. The content and distribution characteristics of trace metal elements were investigated using principal component and cluster analysis. The principal component analysis yielded a four-factor model that explained 73.64% of the test data; the cumulative contribution of the variance of the 1st and 2nd principal factors amounted to 44.41% and showed that Cu, Mg, Mo, and Cd are the characteristic elements of buckwheat flour. The cluster analysis divided the 28 buckwheat samples into two groups, to some extent, reflecting the genuineness of buckwheat flour. Buckwheat flour is rich in essential trace metal elements and can be used as a source of dietary nutrients for Mg and Mo.
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Yeşil S, Levent H. The influence of fermented buckwheat, quinoa and amaranth flour on gluten-free bread quality. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113301] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Brites LTGF, Rebellato AP, Meinhart AD, Godoy HT, Pallone JAL, Steel CJ. Technological, sensory, nutritional and bioactive potential of pan breads produced with refined and whole grain buckwheat flours. Food Chem X 2022; 13:100243. [PMID: 35499026 PMCID: PMC9040025 DOI: 10.1016/j.fochx.2022.100243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 01/21/2022] [Accepted: 02/02/2022] [Indexed: 11/20/2022] Open
Abstract
Breads made with 30% refined buckwheat flour or 30% whole grain buckwheat flour had minor interference in technological quality. Breads made with 30% or 45% whole grain buckwheat flour presented higher mineral contents. Breads made with refined buckwheat flour presented higher mineral bioaccessibility. After baking, rutin and quercetin levels increased, mainly in breads with 45% whole grain buckwheat flour. Breads made with 30% refined buckwheat flour or 30% whole grain buckwheat flour were well accepted by consumers.
The nutritional quality and bioactive potential of breads made with partial replacement of refined wheat flour (RWF) with 30% or 45% refined buckwheat flour (RBF) or whole buckwheat flour (WGBF) was assessed through mineral bioaccessibility, starch digestibility, dietary fiber content and bioactive potential by determining rutin and quercetin levels during processing. Moreover, technological quality and sensory acceptance were also evaluated. Breads made with 30% or 45% WGBF showed higher mineral and fiber contents compared to the control, while the formulations with RBF showed higher bioaccessibility. No changes were observed in the rutin levels of the dough before and after fermentation, but after baking, rutin and quercetin levels increased. The highest starch hydrolysis was found in the formulation containing 45% RBF. The formulations made with 30% RBF or 30% WGBF were well accepted by consumers. Our study shows interesting results, as few studies report the effect of processing on bioactive compounds.
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Affiliation(s)
- Lara T G F Brites
- Department of Food Engineering and Technology, School of Food Engineering, University of Campinas, R. Monteiro Lobato, 80, 13083-862 Campinas, São Paulo, Brazil
| | - Ana P Rebellato
- Department of Food Science and Nutrition, School of Food Engineering, University of Campinas, R. Monteiro Lobato, 80, 13083-862 Campinas, São Paulo, Brazil
| | - Adriana D Meinhart
- Department of Food Science and Nutrition, School of Food Engineering, University of Campinas, R. Monteiro Lobato, 80, 13083-862 Campinas, São Paulo, Brazil
| | - Helena T Godoy
- Department of Food Science and Nutrition, School of Food Engineering, University of Campinas, R. Monteiro Lobato, 80, 13083-862 Campinas, São Paulo, Brazil
| | - Juliana A L Pallone
- Department of Food Science and Nutrition, School of Food Engineering, University of Campinas, R. Monteiro Lobato, 80, 13083-862 Campinas, São Paulo, Brazil
| | - Caroline J Steel
- Department of Food Engineering and Technology, School of Food Engineering, University of Campinas, R. Monteiro Lobato, 80, 13083-862 Campinas, São Paulo, Brazil
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7
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Vogel-Mikuš K, Pongrac P. Imaging of Potassium and Calcium Distribution in Plant Tissues and Cells to Monitor Stress Response and Programmed Cell Death. Methods Mol Biol 2022; 2447:233-246. [PMID: 35583786 DOI: 10.1007/978-1-0716-2079-3_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In plants, the response to stress, such as salinity, pathogen attack, drought, high concentration of metals, hyperthermia, and hypothermia, is usually accompanied by potassium ion (K+) leakage from the cytosol to the cell wall, mediated by plasma membrane cation conductivity. Stress-induced electrolyte leakage co-occurs with accumulation of reactive oxygen species (ROS) and calcium ions (Ca2+) and often results in programmed cell death (PCD). The development of X-ray and mass spectrometry (MS) based imaging techniques has enabled insight into the spatial tissue and cell-specific redistribution of major and trace elements during the stress response. In this chapter a workflow for sample preparation, imaging, and image analysis by X-ray and MS based techniques is presented.
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Affiliation(s)
- Katarina Vogel-Mikuš
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia.
- Jozef Stefan Institute, Ljubljana, Slovenia.
| | - Paula Pongrac
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
- Jozef Stefan Institute, Ljubljana, Slovenia
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8
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Baseggio M, Murray M, Wu D, Ziegler G, Kaczmar N, Chamness J, Hamilton JP, Buell CR, Vatamaniuk OK, Buckler ES, Smith ME, Baxter I, Tracy WF, Gore MA. Genome-wide association study suggests an independent genetic basis of zinc and cadmium concentrations in fresh sweet corn kernels. G3 (BETHESDA, MD.) 2021; 11:6287658. [PMID: 34849806 PMCID: PMC8496296 DOI: 10.1093/g3journal/jkab186] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 05/25/2021] [Indexed: 01/05/2023]
Abstract
Despite being one of the most consumed vegetables in the United States, the elemental profile of sweet corn (Zea mays L.) is limited in its dietary contributions. To address this through genetic improvement, a genome-wide association study was conducted for the concentrations of 15 elements in fresh kernels of a sweet corn association panel. In concordance with mapping results from mature maize kernels, we detected a probable pleiotropic association of zinc and iron concentrations with nicotianamine synthase5 (nas5), which purportedly encodes an enzyme involved in synthesis of the metal chelator nicotianamine. In addition, a pervasive association signal was identified for cadmium concentration within a recombination suppressed region on chromosome 2. The likely causal gene underlying this signal was heavy metal ATPase3 (hma3), whose counterpart in rice, OsHMA3, mediates vacuolar sequestration of cadmium and zinc in roots, whereby regulating zinc homeostasis and cadmium accumulation in grains. In our association panel, hma3 associated with cadmium but not zinc accumulation in fresh kernels. This finding implies that selection for low cadmium will not affect zinc levels in fresh kernels. Although less resolved association signals were detected for boron, nickel, and calcium, all 15 elements were shown to have moderate predictive abilities via whole-genome prediction. Collectively, these results help enhance our genomics-assisted breeding efforts centered on improving the elemental profile of fresh sweet corn kernels.
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Affiliation(s)
- Matheus Baseggio
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Matthew Murray
- Department of Agronomy, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Di Wu
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Gregory Ziegler
- Donald Danforth Plant Science Center, St. Louis, MO 63132, USA
| | - Nicholas Kaczmar
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - James Chamness
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - John P Hamilton
- Department of Plant Biology, Michigan State University, East Lansing, MI 48824, USA
| | - C Robin Buell
- Department of Plant Biology, Michigan State University, East Lansing, MI 48824, USA
| | - Olena K Vatamaniuk
- Soil and Crop Sciences Section, Plant Biology Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Edward S Buckler
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA.,Institute for Genomic Diversity, Cornell University, Ithaca, NY 14853, USA.,US Department of Agriculture-Agricultural Research Service, Robert W. Holley Center for Agriculture and Health, NY 14853, USA
| | - Margaret E Smith
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Ivan Baxter
- Donald Danforth Plant Science Center, St. Louis, MO 63132, USA
| | - William F Tracy
- Department of Agronomy, University of Wisconsin-Madison, Madison, WI 53706, USA
| | - Michael A Gore
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
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Wu D, Tanaka R, Li X, Ramstein GP, Cu S, Hamilton JP, Buell CR, Stangoulis J, Rocheford T, Gore MA. High-resolution genome-wide association study pinpoints metal transporter and chelator genes involved in the genetic control of element levels in maize grain. G3-GENES GENOMES GENETICS 2021; 11:6156830. [PMID: 33677522 PMCID: PMC8759812 DOI: 10.1093/g3journal/jkab059] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 02/21/2021] [Indexed: 12/18/2022]
Abstract
Despite its importance to plant function and human health, the genetics underpinning element levels in maize grain remain largely unknown. Through a genome-wide association study in the maize Ames panel of nearly 2,000 inbred lines that was imputed with ∼7.7 million SNP markers, we investigated the genetic basis of natural variation for the concentration of 11 elements in grain. Novel associations were detected for the metal transporter genes rte2 (rotten ear2) and irt1 (iron-regulated transporter1) with boron and nickel, respectively. We also further resolved loci that were previously found to be associated with one or more of five elements (copper, iron, manganese, molybdenum, and/or zinc), with two metal chelator and five metal transporter candidate causal genes identified. The nas5 (nicotianamine synthase5) gene involved in the synthesis of nicotianamine, a metal chelator, was found associated with both zinc and iron and suggests a common genetic basis controlling the accumulation of these two metals in the grain. Furthermore, moderate predictive abilities were obtained for the 11 elemental grain phenotypes with two whole-genome prediction models: Bayesian Ridge Regression (0.33–0.51) and BayesB (0.33–0.53). Of the two models, BayesB, with its greater emphasis on large-effect loci, showed ∼4–10% higher predictive abilities for nickel, molybdenum, and copper. Altogether, our findings contribute to an improved genotype-phenotype map for grain element accumulation in maize.
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Affiliation(s)
- Di Wu
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Ryokei Tanaka
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | - Xiaowei Li
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
| | | | - Suong Cu
- College of Science and Engineering, Flinders University, Bedford Park, SA 5042, Australia
| | - John P Hamilton
- Department of Plant Biology, Michigan State University, East Lansing, MI 48824, USA
| | - C Robin Buell
- Department of Plant Biology, Michigan State University, East Lansing, MI 48824, USA
| | - James Stangoulis
- College of Science and Engineering, Flinders University, Bedford Park, SA 5042, Australia
| | - Torbert Rocheford
- Department of Agronomy, Purdue University, West Lafayette, IN 47907, USA
| | - Michael A Gore
- Plant Breeding and Genetics Section, School of Integrative Plant Science, Cornell University, Ithaca, NY 14853, USA
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Podolska G, Gujska E, Klepacka J, Aleksandrowicz E. Bioactive Compounds in Different Buckwheat Species. PLANTS (BASEL, SWITZERLAND) 2021; 10:961. [PMID: 34065966 PMCID: PMC8151484 DOI: 10.3390/plants10050961] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/30/2021] [Accepted: 05/06/2021] [Indexed: 01/13/2023]
Abstract
The accumulation of valuable nutrients in cereal grains depends on a number of factors, including species, cultivars, and environment conditions. The aim of this study was to compare protein, some polyphenols and rutin content, as well as mineral composition in Fagopyrum tataricum and Fagopyrum esculentum genotypes growing in Polish conditions. A field experiment was conducted on pseudopodsolic soil in 2017-2018 at the Experimental Station in Osiny (51°35', 21°55'), following randomized complete block method with three replications. Two cultivars of Fagophyrum esculentum (Kora and Panda), two cultivars of Fagopyrum tataricum (LIT1 and 63181) and two forms of Fagopyrum esculentum (Red Corolla and Green Corolla) were used in this experiment. We found differences in the tested compounds (protein, phenolic acids, rutin, and mineral composition) between cultivars and genotypes. Total phenolic acid and rutin contents were higher in the Fagopyrum tataricum compared to Fagopyrum esculentum. Ferulic and coumaric acids were prominent in the Kora and Panda cultivars, however vanillic and syringic acids accumulated more in Green Corolla and Red Corolla. The common buckwheat seeds contained more Cu, Mn, and Mg and less Ca than tartary buckwheat. Moreover Fagopytum esculentum genotype contains more protein compared to Fagopyrum tataricum.
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Affiliation(s)
- Grażyna Podolska
- Department of Cereals Crop Production, Institute of Soil Science and Plant Cultivation-State Research Institute, Czartoryskich 8 Str, 24-100 Puławy, Poland;
| | - Elżbieta Gujska
- Department of Commodity Science and Food Analysis, University of Warmia and Mazury in Olsztyn, Plac Cieszynski 1, 10-719 Olsztyn, Poland; (E.G.); (J.K.)
| | - Joanna Klepacka
- Department of Commodity Science and Food Analysis, University of Warmia and Mazury in Olsztyn, Plac Cieszynski 1, 10-719 Olsztyn, Poland; (E.G.); (J.K.)
| | - Edyta Aleksandrowicz
- Department of Cereals Crop Production, Institute of Soil Science and Plant Cultivation-State Research Institute, Czartoryskich 8 Str, 24-100 Puławy, Poland;
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Comparison of the Chemical and Technological Characteristics of Wholemeal Flours Obtained from Amaranth ( Amaranthus sp.), Quinoa ( Chenopodium quinoa) and Buckwheat ( Fagopyrum sp.) Seeds. Foods 2021; 10:foods10030651. [PMID: 33808595 PMCID: PMC8003493 DOI: 10.3390/foods10030651] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 03/14/2021] [Accepted: 03/15/2021] [Indexed: 11/21/2022] Open
Abstract
A sound fundamental knowledge of the seed and flour characteristics of pseudocereals is crucial to be able to promote their industrial use. As a first step towards a more efficient and successful application, this study focuses on the seed characteristics, chemical composition and technological properties of commercially available pseudocereals (amaranth, quinoa, buckwheat). The levels of starch, fat, dietary fiber and minerals were comparable for amaranth and quinoa seeds but the protein content is higher in amaranth. Due to the high amount of starch, buckwheat seeds are characterised by the lowest amounts of fat, dietary fibre and minerals. Its protein content ranged between that of amaranth and quinoa. Buckwheat seeds were larger but easily reduced in size. The lipid fraction of the pseudocereals mostly contained unsaturated fatty acids, with the highest prevalence of linoleic and oleic acid. Palmitic acid is the most abundant unsaturated fatty acid. Moreover, high levels of P, K and Mg were found in these pseudocereals. The highest phenolic content was found in buckwheat. Amaranth WMF (wholemeal flour) had a high swelling power but low shear stability. The pasting profile strongly varied among the different quinoa WMFs. Buckwheat WMFs showed high shear stability and rate of retrogradation.
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12
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Aubert L, Decamps C, Jacquemin G, Quinet M. Comparison of Plant Morphology, Yield and Nutritional Quality of Fagopyrum esculentum and Fagopyrum tataricum Grown under Field Conditions in Belgium. PLANTS 2021; 10:plants10020258. [PMID: 33525666 PMCID: PMC7910852 DOI: 10.3390/plants10020258] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 01/18/2021] [Accepted: 01/23/2021] [Indexed: 01/28/2023]
Abstract
Buckwheat is a pseudocereal with high nutritional and nutraceutical properties. Although common buckwheat (Fagopyrum esculentum) is the main cultivated species, Tartary buckwheat (Fagopyrum tataricum) is gaining interest. In this paper, we compared plant growth, yield-related parameters and seed nutritional qualities of two varieties of F. esculentum and F. tataricum under field conditions in Belgium. Fagopyrum esculentum flowered earlier, produced less nodes, less branches, less inflorescences, but more flowers per inflorescence than F. tataricum. The yield was higher in F. tataricum, while the thousand-grain weight was higher in F. esculentum. Yield ranged between 2037 kg/ha and 3667 kg/ha depending on the species and year. Regarding nutritional qualities, seeds of F. esculentum contained more proteins (15.4% vs. 12.8%) than seeds of F. tataricum although their amino acid profile was similar. Seeds of F. esculentum contained also more Mg (1.36 vs. 1.15 mg/g dry weight (DW)) and less Fe (22.9 vs. 32.6 µg/g DW) and Zn (19.6 vs. 24.5 µg/g DW) than F. tataricum. The main difference between seed nutritional quality was the concentration of flavonoids that was 60 times higher in F. tataricum than in F. esculentum. Both species grow well under Belgian conditions and showed good seed quality.
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Affiliation(s)
- Lauranne Aubert
- Earth and Life Institute-Agronomy, Université Catholique de Louvain, B-1348 Louvain-la-Neuve, Belgium; (L.A.); (C.D.)
| | - Christian Decamps
- Earth and Life Institute-Agronomy, Université Catholique de Louvain, B-1348 Louvain-la-Neuve, Belgium; (L.A.); (C.D.)
| | - Guillaume Jacquemin
- Unité Productions Végétales, Département Productions Agricoles, Centre Wallon de Recherches Agronomiques, B-5030 Gembloux, Belgium;
| | - Muriel Quinet
- Earth and Life Institute-Agronomy, Université Catholique de Louvain, B-1348 Louvain-la-Neuve, Belgium; (L.A.); (C.D.)
- Correspondence: ; Tel.: +32-10-47-34-43
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Koval D, Plocková M, Kyselka J, Skřivan P, Sluková M, Horáčková Š. Buckwheat Secondary Metabolites: Potential Antifungal Agents. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:11631-11643. [PMID: 32985180 DOI: 10.1021/acs.jafc.0c04538] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Research groups have put significant emphasis on the evaluation of nutritional, health-promoting, and other biological activities of secondary metabolites from buckwheat. Among these phytochemicals, phenolic and lipophilic antioxidants, particularly, phenolic acids, flavonoids, and tocopherols, have been the focus of the latest studies since antioxidant activity has recently been associated with the possibility of inhibiting fungal growth and mycotoxin biosynthesis. The mycotoxin contamination of cereal and pseudocereal grains caused primarily by Fusarium, Penicillium, and Aspergillus species poses a significant hazard to human health. Therefore, efforts to examine the involvement of plant antioxidants in the biosynthesis of mycotoxins at the transcriptional level have emerged. In addition, hydrophobic interactions of buckwheat phenolics with cell membranes could also explain their capacity to reduce fungal development. Eventually, possibilities of enhancing the biological activity of cereal and pseudocereal phytochemicals have been studied, and sourdough fermentation has been proposed as an efficient method to increase antioxidant activities. This effect could result in an increased antifungal effects of sourdough and bakery products. This review reports the main advances in research on buckwheat phenolics and other antioxidant phytochemicals, highlighting possible mechanisms of action and processes that could improve their biological activities.
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Affiliation(s)
- Daniel Koval
- Department of Dairy, Fat and Cosmetics, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
| | - Milada Plocková
- Department of Dairy, Fat and Cosmetics, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
| | - Jan Kyselka
- Department of Dairy, Fat and Cosmetics, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
| | - Pavel Skřivan
- Department of Carbohydrates and Cereals, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
| | - Marcela Sluková
- Department of Carbohydrates and Cereals, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
| | - Šárka Horáčková
- Department of Dairy, Fat and Cosmetics, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Technická 5, 166 28 Prague, Czech Republic
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14
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Klepacka J, Najda A. Effect of commercial processing on polyphenols and antioxidant activity of buckwheat seeds. Int J Food Sci Technol 2020. [DOI: 10.1111/ijfs.14714] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Joanna Klepacka
- Food Science Department University of Warmia and Mazury in Olsztyn Heweliusza 6 Street10‐957 Olsztyn Poland
| | - Agnieszka Najda
- Department of Vegetable Crops and Medicinal Plants University of Life Sciences Akademicka 15 Street 20‐950 Lublin Poland
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Klepacka J, Najda A, Klimek K. Effect of Buckwheat Groats Processing on the Content and Bioaccessibility of Selected Minerals. Foods 2020; 9:E832. [PMID: 32630374 PMCID: PMC7353638 DOI: 10.3390/foods9060832] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 06/19/2020] [Accepted: 06/22/2020] [Indexed: 12/15/2022] Open
Abstract
Adequate supply of minerals in the diet is necessary for the proper functioning of the human body. In recent years gluten-free diet, which rigorous forms may lead to deficiencies of mineral components (especially Mg, Mn, Zn and Cu), is becoming more and more popular. Buckwheat grains do not contain gluten, and their nutritional value is very high. They are often consumed in the form of groats, which are obtained from roasted and dehulled seeds. The purpose of the work was to determine how conducting the buckwheat groats production in industrial conditions affects the content and availability of magnesium, manganese, zinc and copper. The results indicated that husk removal had a particularly adverse effect on the total manganese content and its amount released by enzymatic digestion, whereas it had a positive effect on the post-digestion zinc level by increasing it by nearly half. Hydrothermal processes especially affected the release of analysed elements simulated by the in vitro method, and the extent of changes depended on the processing parameters. It was shown that bioaccessibility of minerals may be increased by treating buckwheat at a lower temperature for a short time, which has a particularly beneficial effect on the manganese and magnesium. Treating grains at a higher temperature reduces the bioaccessibility of all analysed elements, which was particularly noted for zinc and copper. Based on the obtained results, it should be stated that buckwheat groats should be a regular part of human diet, because they are a good source of easily digestible mineral compounds. Their consumption should be especially considered by people on a rigorous gluten-free diet, as they can prevent mineral deficiencies associated with its use.
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Affiliation(s)
- Joanna Klepacka
- Department of Commodity Science and Food Analysis, Faculty of Food Science, University of Warmia and Mazury in Olsztyn, Oczapowskiego 2, 10-719 Olsztyn, Poland;
| | - Agnieszka Najda
- Laboratory of Quality of Vegetables and Medicinal Plants, Department of Vegetable Crops and Medicinal Plants, University of Life Sciences in Lublin, Akademicka 15, 20-950 Lublin, Poland
| | - Kamila Klimek
- Department of Applied Mathematics and Informatics, University of Life Sciences in Lublin, Głęboka 28, 20-612 Lublin, Poland;
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16
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Pseudocereal grains: Nutritional value, health benefits and current applications for the development of gluten-free foods. Food Chem Toxicol 2020; 137:111178. [PMID: 32035214 DOI: 10.1016/j.fct.2020.111178] [Citation(s) in RCA: 93] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 01/15/2020] [Accepted: 01/31/2020] [Indexed: 02/07/2023]
Abstract
Nowadays, consumers are more conscious of the environmental and nutritional benefits of foods. Pseudocereals grains, edible seeds belonging to dicotyledonous plant species, are becoming a current trend in human diets as gluten-free (GF) grains with excellent nutritional and nutraceutical value. Pseudocereals are a good source of starch, fiber, proteins, minerals, vitamins, and phytochemicals such as saponins, polyphenols, phytosterols, phytosteroids, and betalains with potential health benefits. The present review aims to summarize the nutritional quality and phytochemical profile of the three main pseudocereal grains: quinoa, amaranth and buckwheat. In addition, current evidence about their health benefits in animal models and human studies is also provided in detail. Based on the accumulating research supporting the inclusion of pseudocereals grains in the diet of celiac persons, this review discusses the recent advances in their application for the development of new GF products. Future directions for a wider cultivation and commercial exploitation of these crops are also highlighted.
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Pongrac P, Arčon I, Castillo-Michel H, Vogel-Mikuš K. Mineral Element Composition in Grain of Awned and Awnletted Wheat ( Triticum aestivum L.) Cultivars: Tissue-Specific Iron Speciation and Phytate and Non-Phytate Ligand Ratio. PLANTS 2020; 9:plants9010079. [PMID: 31936205 PMCID: PMC7020463 DOI: 10.3390/plants9010079] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 01/04/2020] [Accepted: 01/06/2020] [Indexed: 11/16/2022]
Abstract
In wheat (Triticum aestivum L.), the awns—the bristle-like structures extending from lemmas—are photosynthetically active. Compared to awned cultivars, awnletted cultivars produce more grains per unit area and per spike, resulting in significant reduction in grain size, but their mineral element composition remains unstudied. Nine awned and 11 awnletted cultivars were grown simultaneously in the field. With no difference in 1000-grain weight, a larger calcium and manganese—but smaller iron (Fe) concentrations—were found in whole grain of awned than in awnletted cultivars. Micro X-ray absorption near edge structure analysis of different tissues of frozen-hydrated grain cross-sections revealed that differences in total Fe concentration were not accompanied by differences in Fe speciation (64% of Fe existed as ferric and 36% as ferrous species) or Fe ligands (53% were phytate and 47% were non-phytate ligands). In contrast, there was a distinct tissue-specificity with pericarp containing the largest proportion (86%) of ferric species and nucellar projection (49%) the smallest. Phytate ligand was predominant in aleurone, scutellum and embryo (72%, 70%, and 56%, respectively), while nucellar projection and pericarp contained only non-phytate ligands. Assuming Fe bioavailability depends on Fe ligands, we conclude that Fe bioavailability from wheat grain is tissue specific.
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Affiliation(s)
- Paula Pongrac
- Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia; (I.A.); (K.V.-M.)
- Correspondence: ; Tel.: +386-51-222-963; Fax: +386-477-31-51
| | - Iztok Arčon
- Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia; (I.A.); (K.V.-M.)
- Laboratory for quantum optics, University of Nova Gorica, Vipavska 13, SI-5000 Nova Gorica, Slovenia
| | | | - Katarina Vogel-Mikuš
- Jožef Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia; (I.A.); (K.V.-M.)
- Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia
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18
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Cheah ZX, Kopittke PM, Harper SM, O’Hare TJ, Wang P, Paterson DJ, de Jonge MD, Bell MJ. In situ analyses of inorganic nutrient distribution in sweetcorn and maize kernels using synchrotron-based X-ray fluorescence microscopy. ANNALS OF BOTANY 2019; 123:543-556. [PMID: 30357312 PMCID: PMC6377104 DOI: 10.1093/aob/mcy189] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 09/09/2018] [Indexed: 05/06/2023]
Abstract
BACKGROUND AND AIMS Understanding the spatial distribution of inorganic nutrients within edible parts of plant products helps biofortification efforts to identify and focus on specific uptake pathways and storage mechanisms. METHODS Kernels of sweetcorn (Zea mays) variety 'High zeaxanthin 103146' and maize inbred line 'Thai Floury 2' were harvested at two different maturity stages, and the distributions of K, P, S, Ca, Zn, Fe and Mn were examined in situ using synchrotron-based X-ray fluorescence microscopy. KEY RESULTS The distribution of inorganic nutrients was largely similar between maize and sweetcorn, but differed markedly depending upon the maturity stage after further embryonic development. The micronutrients Zn, Fe and Mn accumulated primarily in the scutellum of the embryo during early kernel development, while trace amounts of these were found in the aleurone layer at the mature stage. Although P accumulated in the scutellum, there was no direct relationship between the concentrations of P and those of the micronutrients, compared with the linear trend between Zn and Fe concentrations. CONCLUSIONS This study highlights the important role of the embryo as a micronutrient reserve for sweetcorn and maize kernels, and the need to understand how biofortification efforts can further increase the inorganic nutrient concentration of the embryo for human consumption.
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Affiliation(s)
- Zhong Xiang Cheah
- The University of Queensland, School of Agriculture and Food Sciences, Gatton, Queensland, Australia
| | - Peter M Kopittke
- The University of Queensland, School of Agriculture and Food Sciences, Gatton, Queensland, Australia
| | - Stephen M Harper
- Department of Agriculture and Fisheries Gatton, Queensland, Australia
| | - Tim J O’Hare
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Gatton, Queensland, Australia
| | - Peng Wang
- The University of Queensland, School of Agriculture and Food Sciences, Gatton, Queensland, Australia
- Nanjing Agricultural University, College of Resources and Environmental Sciences, Nanjing, China
| | | | | | - Michael J Bell
- The University of Queensland, School of Agriculture and Food Sciences, Gatton, Queensland, Australia
- Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Gatton, Queensland, Australia
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19
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Xia Q, Wang L, Yu W, Li Y. Investigating the influence of selected texture-improved pretreatment techniques on storage stability of wholegrain brown rice: Involvement of processing-induced mineral changes with lipid degradation. Food Res Int 2017; 99:510-521. [DOI: 10.1016/j.foodres.2017.06.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 06/03/2017] [Accepted: 06/06/2017] [Indexed: 12/22/2022]
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20
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Kočevar Glavač N, Stojilkovski K, Kreft S, Park CH, Kreft I. Determination of fagopyrins, rutin, and quercetin in Tartary buckwheat products. Lebensm Wiss Technol 2017. [DOI: 10.1016/j.lwt.2017.01.068] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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21
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Minerals in vitro bioaccessibility and changes in textural and structural characteristics of uncooked pre-germinated brown rice influenced by ultra-high pressure. Food Control 2017. [DOI: 10.1016/j.foodcont.2016.07.018] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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22
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Bokor B, Ondoš S, Vaculík M, Bokorová S, Weidinger M, Lichtscheidl I, Turňa J, Lux A. Expression of Genes for Si Uptake, Accumulation, and Correlation of Si with Other Elements in Ionome of Maize Kernel. FRONTIERS IN PLANT SCIENCE 2017; 8:1063. [PMID: 28674553 PMCID: PMC5474966 DOI: 10.3389/fpls.2017.01063] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 06/02/2017] [Indexed: 05/09/2023]
Abstract
The mineral composition of cells, tissues, and organs is decisive for the functioning of the organisms, and is at the same time an indicator for understanding of physiological processes. We measured the composition of the ionome in the different tissues of maize kernels by element microanalysis, with special emphasis on silicon (Si). We therefore also measured the expression levels of the Si transporter genes ZmLsi1, ZmLsi2 and ZmLsi6, responsible for Si uptake and accumulation. Two weeks after pollination ZmLsi1 and ZmLsi6 genes were expressed, and expression continued until the final developmental stage of the kernels, while ZmLsi2 was not expressed. These results suggest that exclusively ZmLsi1 and ZmLsi6 are responsible for Si transport in various stages of kernel development. Expression level of ZmLsi genes was consistent with Si accumulation within kernel tissues. Silicon was mainly accumulated in pericarp and embryo proper and the lowest Si content was detected in soft endosperm and the scutellum. Correlation linkages between the distribution of Si and some other elements (macroelements Mg, P, S, N, P, and Ca and microelements Cl, Zn, and Fe) were found. The relation of Si with Mg was detected in all kernel tissues. The Si linkage with other elements was rather specific and found only in certain kernel tissues of maize. These relations may have effect on nutrient uptake and accumulation.
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Affiliation(s)
- Boris Bokor
- Department of Plant Physiology, Faculty of Natural Sciences, Comenius University in BratislavaBratislava, Slovakia
- Comenius University Science ParkBratislava, Slovakia
- *Correspondence: Boris Bokor,
| | - Slavomír Ondoš
- Department of Human Geography and Demography, Faculty of Natural Sciences, Comenius University in BratislavaBratislava, Slovakia
| | - Marek Vaculík
- Department of Plant Physiology, Faculty of Natural Sciences, Comenius University in BratislavaBratislava, Slovakia
- Institute of Botany, Plant Science and Biodiversity Centre of Slovak Academy of SciencesBratislava, Slovakia
| | - Silvia Bokorová
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University in BratislavaBratislava, Slovakia
| | - Marieluise Weidinger
- Core Facility Cell Imaging and Ultrastructure Research, University of ViennaVienna, Austria
| | - Irene Lichtscheidl
- Core Facility Cell Imaging and Ultrastructure Research, University of ViennaVienna, Austria
| | - Ján Turňa
- Comenius University Science ParkBratislava, Slovakia
- Department of Molecular Biology, Faculty of Natural Sciences, Comenius University in BratislavaBratislava, Slovakia
| | - Alexander Lux
- Department of Plant Physiology, Faculty of Natural Sciences, Comenius University in BratislavaBratislava, Slovakia
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The effects of hydrothermal processing and germination on Fe speciation and Fe bioaccessibility to human intestinal Caco-2 cells in Tartary buckwheat. Food Chem 2016; 199:782-90. [DOI: 10.1016/j.foodchem.2015.12.071] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Revised: 11/13/2015] [Accepted: 12/16/2015] [Indexed: 11/17/2022]
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Abstract
AbstractBuckwheat (Fagopyrum esculentum Moench, F. tataricum Gaertner) groats and flour have been established globally as nutritional foods because of their high levels of proteins, polyphenols and minerals. In some regions, buckwheat herb is used as a functional food. In the present study, reports of in vitro studies, preclinical and clinical trials dealing with the effect of buckwheat and its metabolites were reviewed. There are numerous reports of potential health benefits of consuming buckwheat, which may be in the form of food, dietary supplements, home remedies or possibly pharmaceutical drugs; however, adverse effects, including those resulting from contamination, must be considered. There are reports of antioxidative activity of buckwheat, which contains high levels of rutin and quercetin. On the other hand, both cytotoxic and antigenotoxic effects have been shown. Reduction of hyperlipidaemia, reduction of blood pressure and improved weight regulation have been suggested. Consuming buckwheat may have a beneficial effect on diabetes, since lower postprandial blood glucose and insulin response have been reported. In addition, buckwheat metabolites, such as rutin, may have intrinsic protective effects in preserving insulin signalling. Rutin has also been suggested to have potential therapeutic applications for the treatment of Alzheimer’s disease. The literature indicates that buckwheat is safe to consume and may have various beneficial effects on human health.
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25
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Kovačec E, Likar M, Regvar M. Temporal changes in fungal communities from buckwheat seeds and their effects on seed germination and seedling secondary metabolism. Fungal Biol 2016; 120:666-78. [PMID: 27109364 DOI: 10.1016/j.funbio.2016.03.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 03/01/2016] [Accepted: 03/08/2016] [Indexed: 11/29/2022]
Abstract
Seed-associated fungal communities affect multiple parameters of seed quality at all stages of production, from seed development to post-harvest storage and germination. We therefore investigated the diversity and dynamics of fungal communities in the seeds of common buckwheat (Fagopyrum esculentum) and Tartary buckwheat (F. tataricum) from harvest to 1 y of storage. Fungal populations in seeds were relatively stable, comprised mainly of field fungi. Incidence of fungi was most likely determined by fungal interspecies direct interactions, as well as by their synthesis of volatile organic compounds. Most prominent antagonistic interactions were seen for two plant pathogens, Alternaria alternata on Botrytis cinerea. Detrimental effects of the fungi on seed germination and seedling development were related to fungal extracellular enzyme activity, and in particular to amylase, cellulase and, polyphenol oxidase. Polyphenol and tannin concentrations in buckwheat seedlings were related to fungal growth rate and intensity of fungal cellulase activity, respectively, which suggests that physical penetration of the fungi through the host tissues is probably the stimulus for the activation of plant defence reactions in these seedlings.
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Affiliation(s)
- Eva Kovačec
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Ljubljana 1000, Slovenia
| | - Matevž Likar
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Ljubljana 1000, Slovenia
| | - Marjana Regvar
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Ljubljana 1000, Slovenia.
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Peng C, Wang Y, Sun L, Xu C, Zhang L, Shi J. Distribution and Speciation of Cu in the Root Border Cells of Rice by STXM Combined with NEXAFS. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2016; 96:408-414. [PMID: 26679325 DOI: 10.1007/s00128-015-1716-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 12/10/2015] [Indexed: 06/05/2023]
Abstract
Root border cells (RBCs) serve plants in their initial line of defense against stress from the presence of heavy metals in the soil. In this research, light microscopy and synchrotron-based scanning transmission X-ray microscopy (STXM) combined with near edge X-ray absorption fine structure spectroscopy (NEXAFS) with a nanoscale spatial resolution were used to investigate the effects of copper (Cu) upon the RBCs, as well as its distribution and speciation within the RBCs of rice (Oryza sativa L.) under aeroponic culture. The results indicated that with increasing exposure time and concentration, the attached RBCs were surrounded by a thick mucilage layer which changed in form from an ellipse into a strip in response to Cu ion stress. Copper was present as Cu(II), which accumulated not only in the cell wall but also in the cytoplasm. To our knowledge, this is the first time that STXM has been used in combination with NEXAFS to provide new insight into the distribution and speciation of metal elements in isolated plant cells.
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Affiliation(s)
- Cheng Peng
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Yi Wang
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Lijuan Sun
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Chen Xu
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Lijuan Zhang
- Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201204, China
| | - Jiyan Shi
- Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China.
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27
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Chemical composition and health effects of Tartary buckwheat. Food Chem 2016; 203:231-245. [PMID: 26948610 DOI: 10.1016/j.foodchem.2016.02.050] [Citation(s) in RCA: 174] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 02/02/2016] [Accepted: 02/04/2016] [Indexed: 11/20/2022]
Abstract
Tartary buckwheat (Fagopyrum tataricum) contains a range of nutrients including bioactive carbohydrates and proteins, polyphenols, phytosterols, vitamins, carotenoids, and minerals. The unique composition of Tartary buckwheat contributes to their various health benefits such as anti-oxidative, anti-cancer, anti-hypertension, anti-diabetic, cholesterol-lowering, and cognition-improving. Compared with the more widely cultivated and utilised common buckwheat (F. esculentum), Tartary buckwheat tends to contain higher amounts of certain bioactive components such as rutin, therefore, showing higher efficiency in preventing/treating various disorders. This review summarises the current knowledge of the chemical composition of Tartary buckwheat, and their bio-functions as studied by both in vitro and in vivo models. Tartary buckwheat can be further developed as a sustainable crop for functional food production to improve human health.
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28
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Vogel-Mikuš K, Pongrac P, Pelicon P. Micro-PIXE elemental mapping for ionome studies of crop plants. ACTA ACUST UNITED AC 2015. [DOI: 10.1142/s0129083514400142] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
In order to maintain homeostasis and consequent optimal cell functioning and integrity and/or to avoid toxicity, proper allocation of elements at organ, tissue, cellular and subcellular level is needed. Studies of element localization are therefore crucial to reveal the mechanisms of element trafficking and also tolerance and toxicity. Moreover, studies of localization and speciation of trace elements in grains of staple crops are also of high applicative value, allowing one to determine major and trace element concentrations in different grain tissues without possible contamination. In the last decade, a remarkable progress has been made in the development and application of different 2D imaging techniques in complex biological systems, especially in the sense of improved lateral resolution and sensitivity. The superiority of micro-PIXE over other 2D imaging techniques lies in its wide elemental range (from sodium (Na) to uranium (U)), high elemental sensitivity below micron spatial resolution and fully quantitative element concentration analysis. The aim of this review is to summarize the latest development of micro-PIXE for imaging of the distribution of major and trace elements in crop plants with emphasis on sample preparation methodologies and post-imaging analysis. Case studies of element localization in the grains of major crop plants are also presented.
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Affiliation(s)
- Katarina Vogel-Mikuš
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia
- Department of Low and Medium Energy Physics, Jožef Stefan Institute, Reactor Center, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Paula Pongrac
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia
| | - Primož Pelicon
- Department of Low and Medium Energy Physics, Jožef Stefan Institute, Reactor Center, Jamova 39, SI-1000 Ljubljana, Slovenia
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29
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Villafort Carvalho MT, Pongrac P, Mumm R, van Arkel J, van Aelst A, Jeromel L, Vavpetič P, Pelicon P, Aarts MGM. Gomphrena claussenii, a novel metal-hypertolerant bioindicator species, sequesters cadmium, but not zinc, in vacuolar oxalate crystals. THE NEW PHYTOLOGIST 2015; 208:763-75. [PMID: 26083742 DOI: 10.1111/nph.13500] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 05/05/2015] [Indexed: 05/17/2023]
Abstract
Gomphrena claussenii is a recently described zinc (Zn)- and cadmium (Cd)-hypertolerant Amaranthaceae species displaying a metal bioindicator Zn/Cd accumulation response. We investigated the Zn and Cd distribution in stem and leaf tissues of G. claussenii at the cellular level, and determined metabolite profiles to investigate metabolite involvement in Zn and Cd sequestration. Gomphrena claussenii plants exposed to high Zn and Cd supply were analysed by scanning electron microscopy with energy-dispersive X-ray (SEM-EDX) and micro-proton-induced X-ray emission (micro-PIXE). In addition, gas chromatography-time of flight-mass spectrometry (GC-TOF-MS) was used to determine metabolite profiles on high Zn and Cd exposure. Stem and leaf tissues of G. claussenii plants exposed to control and high Cd conditions showed the abundant presence of calcium oxalate (CaOx) crystals, but on high Zn exposure, their abundance was strongly reduced. Ca and Cd co-localized to the CaOx crystals in Cd-exposed plants. Citrate, malate and oxalate levels were all higher in shoot tissues of metal-exposed plants, with oxalate levels induced 2.6-fold on Zn exposure and 6.4-fold on Cd exposure. Sequestration of Cd in vacuolar CaOx crystals of G. claussenii is found to be a novel mechanism to deal with Cd accumulation and tolerance.
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Affiliation(s)
- Mina T Villafort Carvalho
- Laboratory of Genetics, Wageningen University, Droevendaalsesteeg 1, 6708 PB, Wageningen, the Netherlands
| | - Paula Pongrac
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Večna pot 111, SI-1000, Ljubljana, Slovenia
| | - Roland Mumm
- Plant Research International, Business Unit Bioscience, Wageningen UR, PO Box 16, 6700 AA, Wageningen, the Netherlands
| | - Jeroen van Arkel
- Plant Research International, Business Unit Bioscience, Wageningen UR, PO Box 16, 6700 AA, Wageningen, the Netherlands
| | - Adriaan van Aelst
- Laboratory of Virology, Wageningen Electron Microscopy Centre, Wageningen University, Droevendaalsesteeg 1, 6708 PB, Wageningen, the Netherlands
| | - Luka Jeromel
- Jožef Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia
| | - Primož Vavpetič
- Jožef Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia
| | - Primož Pelicon
- Jožef Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia
| | - Mark G M Aarts
- Laboratory of Genetics, Wageningen University, Droevendaalsesteeg 1, 6708 PB, Wageningen, the Netherlands
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Abstract
Tartary buckwheat (Fagopyrum tataricum) is a semiwild plant grown in the Himalaya region. Due to its high concentration of flavonoids and trace elements it is of interest for cultivation in other countries as well. The feasibility of increasing the concentration of Se in grain and in green parts of Tartary buckwheat has not yet been investigated. The aim of this investigation was thus to determine the concentration of Se in different edible parts of Tartary buckwheat treated with different concentrations of Na selenate using different techniques. In plants grown in soil fertilized once with 0.5 and 10 mg Se L−1, Se was efficiently translocated from the roots to the leaves and seeds. Foliar spraying with 0.5 mg Se L−1increased Se content in leaves and seeds. Among the edible parts of Tartary buckwheat plants the highest content of Se in control and in treated groups was found in leaves, followed by seeds and stems. Regarding recommended Se concentration, edible parts of Tartary buckwheat were safe for human consumption. Soil fertilization with 0.5 and 10 mg Se L−1and foliar fertilization with 0.5 mg Se L−1are applicable for cultivation of Tartary buckwheat as a functional food enriched with Se.
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Prado FE, Fernández-Turiel JL, Tsarouchi M, Psaras GK, González JA. Variation of Seed Mineral Concentrations in Seven Quinoa Cultivars Grown in Two Agroecological Sites. Cereal Chem 2014. [DOI: 10.1094/cchem-08-13-0157-r] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Fernando E. Prado
- Cátedra de Fisiología Vegetal, Facultad de Ciencias Naturales e IML, Universidad Nacional de Tucumán. Miguel Lillo 205, CP 4000 San Miguel de Tucumán-Argentina
- Corresponding author. Phone: +54-381-4239456. Fax: +54-381-4330633
| | | | - Martha Tsarouchi
- Section of Plant Biology, Department of Biology, University of Patras, GR 26500, Patras, Greece
| | - George K. Psaras
- Section of Plant Biology, Department of Biology, University of Patras, GR 26500, Patras, Greece
| | - Juan A. González
- Laboratorio de Ecología, Fundación Miguel Lillo. Miguel Lillo 251, CP 4000 San Miguel de Tucumán, Argentina
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Singh SP, Vogel-Mikuš K, Vavpetič P, Jeromel L, Pelicon P, Kumar J, Tuli R. Spatial X-ray fluorescence micro-imaging of minerals in grain tissues of wheat and related genotypes. PLANTA 2014; 240:277-289. [PMID: 24817589 DOI: 10.1007/s00425-014-2084-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Accepted: 04/17/2014] [Indexed: 06/03/2023]
Abstract
Wheat and its related genotypes show distinct distribution patterns for mineral nutrients in maternal and filial tissues in grains. X-ray-based imaging techniques are very informative to identify genotypes with contrasting tissue-specific localization of different elements. This can help in the selection of suitable genotypes for nutritional improvement of food grain crops. Understanding mineral localization in cereal grains is important for their nutritional improvement. Spatial distribution of mineral nutrients (Mg, P, S, K, Ca, Fe, Zn, Mn and Cu) was investigated between and within the maternal and filial tissues in grains of two wheat cultivars (Triticum aestivum Cv. WH291 and WL711), a landrace (T. aestivum L. IITR26) and a related wild species Aegilops kotschyi, using micro-proton-induced X-ray emission (µ-PIXE) and micro-X-ray fluorescence (µ-XRF). Aleurone and scutellum were major storage tissues for macro (P, K, Ca and Mg) as well as micro (Fe, Zn, Cu and Mn) nutrients. Distinct elemental distribution patterns were observed in each of the four genotypes. A. kotschyi, the wild relative of wheat and the landrace, T. aestivum L. IITR26, accumulated more Zn and Fe in scutellum and aleurone than the cultivated wheat varieties, WH291 and WL711. The landrace IITR26, accumulated far more S in grains, Mn in scutellum, aleurone and embryo region, Ca and Cu in aleurone and scutellum, and Mg, K and P in scutellum than the other genotypes. Unlike wheat, lower Mn and higher Fe, Cu and Zn concentrations were noticed in the pigment strand of A. kotschyi. Multivariate statistical analysis, performed on mineral distribution in major grain tissues (aleurone, scutellum, endosperm and embryo region) resolved the four genotypes into distinct clusters.
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Affiliation(s)
- Sudhir P Singh
- National Agri-Food Biotechnology Institute, Department of Biotechnology (DBT), C-127, Industrial Area, Phase VIII, Mohali, 160071, India,
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Visualisation of the distribution of minerals in red non-tannin finger millet using PIXE microanalysis. J Cereal Sci 2014. [DOI: 10.1016/j.jcs.2014.04.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Baxter IR, Ziegler G, Lahner B, Mickelbart MV, Foley R, Danku J, Armstrong P, Salt DE, Hoekenga OA. Single-kernel ionomic profiles are highly heritable indicators of genetic and environmental influences on elemental accumulation in maize grain (Zea mays). PLoS One 2014; 9:e87628. [PMID: 24489944 PMCID: PMC3906179 DOI: 10.1371/journal.pone.0087628] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Accepted: 12/26/2013] [Indexed: 12/02/2022] Open
Abstract
The ionome, or elemental profile, of a maize kernel can be viewed in at least two distinct ways. First, the collection of elements within the kernel are food and feed for people and animals. Second, the ionome of the kernel represents a developmental end point that can summarize the life history of a plant, combining genetic programs and environmental interactions. We assert that single-kernel-based phenotyping of the ionome is an effective method of analysis, as it represents a reasonable compromise between precision, efficiency, and power. Here, we evaluate potential pitfalls of this sampling strategy using several field-grown maize sample sets. We demonstrate that there is enough genetically determined diversity in accumulation of many of the elements assayed to overcome potential artifacts. Further, we demonstrate that environmental signals are detectable through their influence on the kernel ionome. We conclude that using single kernels as the sampling unit is a valid approach for understanding genetic and environmental effects on the maize kernel ionome.
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Affiliation(s)
- Ivan R. Baxter
- United States Department of Agriculture, Agricultural Research Service, Plant Genetics Research Unit, Donald Danforth Plant Science Center, St. Louis, Missouri, United States of America
| | - Gregory Ziegler
- United States Department of Agriculture, Agricultural Research Service, Plant Genetics Research Unit, Donald Danforth Plant Science Center, St. Louis, Missouri, United States of America
| | - Brett Lahner
- Purdue University, Department of Horticulture and Landscape Architecture, West Lafayette, Indiana, United States of America
| | - Michael V. Mickelbart
- Purdue University, Department of Horticulture and Landscape Architecture, West Lafayette, Indiana, United States of America
| | - Rachel Foley
- Purdue University, Department of Horticulture and Landscape Architecture, West Lafayette, Indiana, United States of America
| | - John Danku
- University of Aberdeen, Institute of Biological and Environmental Science, Aberdeen, United Kingdom
| | - Paul Armstrong
- United States Department of Agriculture, Agricultural Research Service, Engineering and Wind Erosion Research Unit, Manhattan, Kansas, United States of America
| | - David E. Salt
- University of Aberdeen, Institute of Biological and Environmental Science, Aberdeen, United Kingdom
| | - Owen A. Hoekenga
- United States Department of Agriculture, Agricultural Research Service, RW Holley Center for Agriculture and Health, Ithaca, New York, United States of America
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