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Academic literature on the topic 'Zinc content'

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Published: 4 June 2021
Last updated: 24 February 2023

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Journal articles on the topic "Zinc content"

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Bhubhanil, Sakkarin, Panida Sittipo, Paweena Chaoprasid, Sumontha Nookabkaew, Rojana Sukchawalit, and Skorn Mongkolsuk. "Control of zinc homeostasis in Agrobacterium tumefaciens via zur and the zinc uptake genes znuABC and zinT." Microbiology 160, no. 11 (November 1, 2014): 2452–63. http://dx.doi.org/10.1099/mic.0.082446-0.

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The Agrobacterium tumefaciens zinc uptake regulator (Zur) was shown to negatively regulate the zinc uptake genes znuABC, encoding a zinc transport system belonging to the ATP-binding cassette (ABC) transporter family, and zinT, which encodes a periplasmic zinc-binding protein. The expression of znuABC and zinT was inducible when cells were grown in medium containing a metal chelator (EDTA), and this induction was shown to be specific for zinc depletion. The expression of znuABC was reduced in response to increased zinc in a dose-dependent manner, and zinT had a less pronounced but similar pattern of zinc-regulated expression. The inactivation of zur led to constitutively high expression of znuABC and zinT. In addition, a zur mutant had an increased total zinc content compared to the WT NTL4 strain, whereas the inactivation of zinT caused a reduction in the total zinc content. The zinT gene is shown to play a dominant role and to be more important than znuA and znuB for A. tumefaciens survival under zinc deprivation. ZinT can function even when ZnuABC is inactivated. However, mutations in zur, znuA, znuB or zinT did not affect the virulence of A. tumefaciens.
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Iolascon, Achille, and Laura Perrone. "Erythrocytic Zinc Content during Childhood." Acta Haematologica 73, no. 2 (1985): 114–16. http://dx.doi.org/10.1159/000206303.

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Dipti, SS, C. Hotz, KA Kabir, and M. Bipul. "Changes in the zinc content of selected bangladeshi rice varieties through modified parboiling and milling methods." SAARC Journal of Agriculture 15, no. 2 (January 25, 2018): 31–43. http://dx.doi.org/10.3329/sja.v15i2.35153.

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Zinc deficiency is prevalent among women and children in Bangladesh, and methods to increase the zinc content of parboiled rice could contribute to its prevention. We quantified the effect of modified parboiling conditions on zinc content and of the degree of milling on zinc and phytate contents of Bangladeshi rice varieties. Parboiling studies varied the conditions used in the local commercial operations, including pre-steaming and soaking times, change of soaking water, and steaming pressure. Milling studies used 10 Bangladeshi varieties at 0% (brown), 2%, 4%, 6%, 8%, and 10% degree of milling. With ambient soaking water, shorter soaking time was observed with a higher zinc content in brown rice, but not in 10% milled rice, and changing soaking water did not modify zinc content in brown or 10% milled rice. Pre-steaming time and open- vs. closed-system steaming had no significant effect on brown or 10% milled rice zinc content. Reducing the degree of milling from 10% to 6% or 4% resulted in a mean increase in zinc content of 27% and 47%, respectively, and an increase in phytate content of 35% and 72%, respectively. Zinc content in milled rice did not appear to be significantly affected by the parboiling conditions tested. While lower degree of milling resulted in higher zinc content, it is uncertain whether the higher phytate content would fully negate this increase by decreasing the bioavailable fraction of zinc. Human studies of zinc bioavailability from Bangladeshi rice at different degrees of milling are warranted.SAARC J. Agri., 15(2): 31-43 (2017)
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C. Dias-Barbosa, Cristina Z. de Morais, Diego S. V. de Oliveira, Kaesel J. D. de Oliveira, Regilda S. dos Reis Moreira Araújo, and Maurisrael de Moura Rocha. "Selection of Cowpea Elite Lines for Iron and Zinc Biofortification." Current Nutrition & Food Science 17, no. 1 (December 29, 2020): 48–58. http://dx.doi.org/10.2174/1573401316999200503031253.

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Background: Cowpea is a very popular crop in Brazil, rich in nutrients that can be used as food to feed the population, avoiding deficiencies caused by the lack of minerals such as iron and zinc. Objective: To select elite cowpea lines for biofortification of iron and zinc and determine the physical and chemical characteristics of the lines. We analyzed: 33 cowpea genotypes, being 31 elite genotypes and two biofortified cultivars (control). Method: The 10 best lines with iron and zinc contents were selected and, together with the controls, were analyzed for chemical composition (moisture, ash, lipids, proteins and carbohydrates), total energy value and cooking time. Results: The iron and zinc contents in semi-prostrate genotypes were higher than those in semi-erect genotypes, all the semi-prostrate lines presented a high iron content, and 19.25% presented a high zinc content. The genotypes of the semi-erect lines exhibited more significant genetic variability for iron content, whereas those of the semi-prostrate genotypes showed more significant genetic variation for zinc content, both exhibited a high genetic component in phenotypic expression. Improving the genotypes for increased protein content led to reductions in lipid and carbohydrate contents, as well as the total energy value, whereas increasing the carbohydrate content increased both the total energy value and the zinc content. The MNC04-792F-146 lines presented alleles that favored an increase in carbohydrate content and total energy, while the MNC04-769F-26, MNC04-769F-31, and MNC04-774F-90 lines were shown to be good sources of genes for increasing protein content, decreasing lipid content, and rapid cooking. Conclusion: The MNC04-762F-9, MNC04-792F-146, and MNC04-769F-55 lines exhibited the greatest potential to be released as iron and zinc biofortified cultivars.
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Zhang, Yue-Qiang, Li-Li Pang, Peng Yan, Dun-Yi Liu, Wei Zhang, Russell Yost, Fu-Suo Zhang, and Chun-Qin Zou. "Zinc fertilizer placement affects zinc content in maize plant." Plant and Soil 372, no. 1-2 (October 1, 2013): 81–92. http://dx.doi.org/10.1007/s11104-013-1904-9.

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Saakian, Alexander. "Monitoring the content of manganese, zinc, and cobalt in Haplic Chernozem." АгроЭкоИнфо 4, no. 46 (August 19, 2021): 16. http://dx.doi.org/10.51419/20214416.

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The paper uses the materials of local agroecological monitoring of arable soils of the Belgorod region on the content of manganese, zinc, and cobalt in haplic chernozem of the steppe part of the Belgorod region. The content of manganese, zinc and cobalt in the arable horizon was 1.42, 1.22 and 1.23 times higher than in the parent rock, respectively. A strong correlation was established between the total contents of zinc and cobalt in the soil profile (r=0.77), and the bonds of manganese with zinc and cobalt had the strength of an average value (r=0.59 and r=0.55). The content of mobile forms of the studied trace elements in haplic chernozem is at a low level. The main reason for the shortage of mobile forms of manganese, zinc and cobalt is their low background content in virgin soil. Keywords: HAPLIC CHERNOZEM, GROSS CONTENT, CONTENT OF MOBILE FORMS, MANGANESE, ZINC, COBALT
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Yakimovskii, A. F., I. I. Shantyr, M. A. Vlasenko, M. V. Yakovleva, and S. Yu Kryzanovskaia. "The influence of acizolum to bioelements content in rat's blood plasma, parenchimal organs and brain." Biomeditsinskaya Khimiya 64, no. 2 (2018): 183–87. http://dx.doi.org/10.18097/pbmc20186402183.

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Zinc content in blood plasma and brain tissue of rats was studied by analytic mass-spectrometry with inductively coupled plasma. In control (saline-treated animal) zinc content in plasma was 3.6±1.4 mg/ml, in the liver – 12.5±2.5 mg/mg, in the spleen – 10.9±4.1 mg/mg, in the brain – 8.7±3.0 mg/mg. After a single intraperitoneal injection of zinc donator acizolum (24 mg/kg) zinc content decreased in all examined tissues, especially in brain. After a course of sequential acizolum injections (seven administrations during two weeks) essential elevation of zinc content in blood plasma and tissues investigated was detected. The maximal increase zinc concentration in blood plasma and liver was detected in 15 h after the last acizolum injections. Selen, calcium, copper and iron contents demonstrated a more complex behaviour. The obtained data suggest that prolonged acizolum administration has a significant impact on the bioelements content, and this should be taken into consideration when this zinc donator is used as a drug.
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Pandey, Shyam Narain, and Isha Verma. "Zinc-Induced Biochemical Constituents and Reproductive Yield of Wheat with Zinc Supply in Sand Culture Conditions." INTERNATIONAL JOURNAL OF PLANT AND ENVIRONMENT 6, no. 03 (July 25, 2020): 178–81. http://dx.doi.org/10.18811/ijpen.v6i03.03.

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In a sand culture experiment, the present study deals with the quantitative (growth and some biochemical constituents) and qualitative yield of grains (zinc and protein contents) of wheat (Triticum aestivum L., var. HD-2967) under the influence of various concentrations of zinc supply (0.01, 0.1 1.0 and 5 mg l-1). Zinc levels were prepared in a standard nutrient solution (omitting zinc). The zinc accumulation was dose dependent in vegetative parts of wheat, which was increased with increase in zinc supply levels. The low and high zinc content in wheat shoot inhibited pigments content and activity of antioxidative enzymes like catalase and peroxidase. The mobilization of zinc in grains was lower at elevated and low zinc-supply levels in contrast to their accumulation in vegetative parts. The zinc mobilization efficiency index (ZnMEI) was higher at normal doses of zinc as compared to low (0.01 mg l-1) and elevated zinc levels (5 mg l-1). In the present study, maximum increase of 15, 25 and 18% was observed in the dry matter yield, shoot length and total chlorophyll content, respectively following exposure of 1.0 mg l-1 of zinc. At this zinc treatment, protein content in the seeds was elevated by 10% with zinc enrichment by 73%. The observations of this study may be helpful in the studies of zinc-enrichment in wheat production in Zn-deficient soil.
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Middleton, Maureen, Manuel Olivares, Alejandra Espinoza, Miguel Arredondo, Fernando Pizarro, and Carolina Valenzuela. "Exploratory Study: Excessive Iron Supplementation Reduces Zinc Content in Pork without Affecting Iron and Copper." Animals 11, no. 3 (March 11, 2021): 776. http://dx.doi.org/10.3390/ani11030776.

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The aim of this work was to determine in an exploratory manner the effect of excessive iron supplementation on iron, zinc, and copper contents in pork and pork offal. Pigs averaging 50 days in age and 15 ± 1.3 kg body weight were allocated to a control group (500 ppm dietary Fe) and a supplemental group (3000 ppm dietary Fe). After an iron supplementation period of 60 days, blood samples were analyzed to determine iron biomarkers, serum copper, and zinc contents. Animals were slaughtered to assess total iron, non-heme iron, heme iron, zinc, and copper contents in samples of nine meat cuts and some offal. Iron supplementation improved the iron status in pigs with increased hemoglobin and hematocrit, but did not affect serum levels of iron, zinc, and copper. Iron supplementation did not affect the heme and non-heme iron contents of the different meat cuts. Zinc contents decreased by 32–55% in meat cuts, where iron content increased in the liver, spleen, kidneys, and pancreas. No differences of zinc and copper were observed in offal samples. High concentrations of iron supplementation reduce zinc content in pork.
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Gargul, K., P. Jarosz, and S. Małecki. "Alkaline Leaching of Low Zinc Content Iron-Bearing Sludges." Archives of Metallurgy and Materials 61, no. 1 (March 1, 2016): 43–50. http://dx.doi.org/10.1515/amm-2016-0013.

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Various types of waste materials containing zinc (e.g. dusts and sludges from gas dedusting process) are obtained in steel industry. The contents of Zn in these materials may vary considerably. Even a low concentration of zinc in recirculated products precludes their recycling in ferrous metallurgy aggregates. Long storage of this type of material can lead to contamination of soil and water by zinc compounds which can be leached out by acid rain, for example. This paper focuses on research involving alkaline leaching tests of low zinc content iron-bearing materials. These tests were preceded by the analysis of the elemental, phase and grain size composition, and analysis of the thermodynamic conditions of the leaching process. The main aim of research was to decrease the content of the zinc in the sludge to the level where it is suitable as an iron-bearing material for iron production (~1% Zn). Leaching at elevated temperatures (368 K, 60 min) has led to a decrease in the zinc content in the sludge of about 66%. The research revealed that long hour leaching (298 K, 100 hours) carried out at ambient temperatures caused a reduction in zinc content by 60% to the value of 1.15-1.2% Zn.
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Dissertations / Theses on the topic "Zinc content"

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Evens, Nicholas Philip. "The regulatory mechanisms controlling zinc content in wheat." Thesis, University of Southampton, 2017. https://eprints.soton.ac.uk/407446/.

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Cereals such as wheat serve as staples for a large proportion of the world’s population. However, they contain relatively low concentrations of essential micronutrients such as zinc (Zn) in their edible tissues. This is a major issue for human nutrition and food security. The process of Zn uptake and partitioning in plants is highly controlled, with systems present for sensing and responding to Zn status. In the model plant, Arabidopsis thaliana, two transcription factors, bZIP19 and bZIP23, are thought to act as Zn sensors mediating the increased expression of Zn membrane transporters, ZIPs (Zrt/Irt-like proteins), in response to low Zn status. In this thesis the identification and characterisation of homologous bZIP transcription factors and ZIP transporters in wheat are described. TabZIP sequence analysis confirmed the presence of motifs characteristic to the F-group of bZIP transcription factors. Expression of these wheat bZIPs in an Atbzip19 bzip23 line showed a conservation of function between the Arabidopsis and wheat group F bZIPs. A key question is whether the wheat bZIP transcription factors and ZIP transporters are regulated by Zn. Gene-expression analysis indicated that the wheat transcription factors TabZIP1, 3a, 3b, 4 & 5, and the wheat ZIP transporters, TaZIP1, 4, 5, 6 & 7 are induced by Zn-deficient conditions. The Zn-transport capability of TaZIP1, 5, 6, 7 & 8 was confirmed using heterologous yeast expression. Additionally, the binding ability of TabZIPs to regulatory-elements in the promoters of TaZIPs was demonstrated. This links TabZIPs and TaZIPs in the Zn-regulatory mechanism of wheat. This research has identified key genes involved in the regulation, uptake and distribution of Zn in wheat. The molecular mechanisms elucidated will be important in the development of Zn biofortified wheat varieties as well as cultivars which maintain high yield in Zn-deficient conditions. These may prove vital in achieving global food security.
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PULS, ROBERT WILLIAM. "ADSORPTION OF HEAVY METALS ON SOIL CLAYS (KAOLINITE, CADMIUM, MONTMORILLONITE, ZINC)." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/183889.

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Metal cation adsorption is the predominant chemical mechanism governing the attenuation of toxic metal movement in soils. Clay minerals are the primary adsorbent surfaces in soils due to their ubiquitous nature and large reactive surface area. This study examined the relative affinity of the metals cadmium, nickel and zinc for the clay minerals kaolinite and montmorillonite. The influence which different mineral adsorbents and different complexing ligands in solution have on the adsorption of metal ions was assessed using the Hard-Soft Acid-Base Principle as a theoretical framework for predicting the maximum extent of adsorption and rate of adsorption. The HSAB principle is that hard bases prefer to complex hard acids and soft bases prefer to complex soft acids. The hypothesis that initiated these investigations was that the hard-soft character of mineral surfaces is due to their surface functional groups and can be measured using metal cation adsorption selectivity experiments where pH and complex ion formation are controlled. When complex ion formation in aqueous solution was minimized (i.e. in Ca(ClO₄)₂), adsorption decreased in the order of decreasing softness, CD > Zn > Ni for both clay minerals. Montmorillonite behaved as a slightly harder Lewis base than kaolinite, sorbing the harder Ni and Zn ions to a greater extent than Cd, although both minerals behaved as soft Lewis bases. In the presence of chloride and sulfate ligands, adsorption sequences changed and reflected results from typical soil solution studies. In some cases the adsorption sequences can be explained using the HSAB principle together with computer speciation data and this approach merits further consideration and research. Adsorption over time and calculated adsorption rate constants were generally consistent with equilibrium selectivity data. Adsorption rates decreased in the order Cd > Zn > Ni in Ca(ClO₄)₂ for both clay minerals. The adsorption curves reflect a two-step adsorption process involving a rapid exchange-type reaction followed by a much slower adsorption involving diffusion into the crystal or alteration of the surface through the formation of a new solid phase involving the adsorbed ions.
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Neilsen, Denise. "Characterization and plant availability of zinc in British Columbia orchard soils." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=72835.

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Marsh, Sally. "Impact of traffic pollution on the nitrogen metabolism and zinc content of roadside vegetation." Thesis, University College London (University of London), 2005. http://discovery.ucl.ac.uk/1445685/.

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The impact of traffic pollution on the nitrogen metabolism and zinc content of roadside vegetation was investigated by measuring a range of physiological responses and surface Zn in trees. Dry deposition in the form of NOx ranged from 14.8 to 40.7 Kg N ha yr"1 within the woodland. The amount of deposition was spatially related to the distance from the motorway that runs adjacent to the woodland. Maximum NOx deposition was found next to the motorway in the rural downwind environment At mis site trees exhibited significantly higher growth rates as assessed by yearly shoot extension as well as exhibiting more positive foliar 815N signatures compared to trees at a control site 600m away. These two results are taken as an indication that atmospheric NOx produced by motorway traffic is contributing to the nutrition and growth of roadside trees. In vivo activity of the N assimilatory enzyme, NR was assayed in the foliage of S. nigra, C. monogyna, B. pendula and Quercus spp. growing at the woodland. Elevated NR activity close to the road was only demonstrated for one species, S. nigra suggesting the assimilation of traffic-derived NOx following foliar uptake. High NR activities in this species may mean mat leaves act as NOx sinks, effectively 'mopping up' NOx from the atmosphere. In general, proximity to the traffic appeared to have few effects of the motorway on tissue metabolite pools. Total N and tissue NO3" were not affected by proximity to the motorway. Similarly, no significant differences were found for total P concentrations. It is suggested that at this lowland deciduous woodland, soil nutrients are non-limiting and thus allow growth to occur in response to inputs from traffic-derived N. It is proposed that this increase in biomass has the effect of diluting elements or metabolites such as total N and NO3" so that they remain at a constant level. It is recommended that at similar sites, rather than using metabolites as biomarkers, foliar 8,5N signatures in combination with simple growth measurements are used as to demonstrate traffic effects. Whereas results indicated that tissue Zn was unaffected by proximity to the road, surface Zn was found to accumulate during dry weather, only to be washed off during rainfall events. Amounts of surface Zn were examined on a 5 tree species growing in central London, namely S. nigra, C. monogyna, F. excelsior, A. hippocastanum and P.acerifolia. Surface Zn was highest on the leaves of C. monogyna which contained 13.8 mg Zn m"2 on its leaves. Scanning electron microscopy was able to show that species differences may be related to epicuticular wax characteristics. Results are discussed in relation to the potential use of trees for ameliorating atmospheric NOx and particulate pollution levels.
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Henshel, Judy 1958. "Copper, manganese, and zinc in Puerco River sediments." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276725.

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A study was conducted to test for the presence of heavy metals (Cu, Mn, and Zn) in surface sediments of the Puerco River channel in the aftermath of a toxic spill in 1979 near Church Rock, New Mexico. Analysis of samples from five sites downstream from the spill showed that these substances were not present in unusually large amounts, though an increasing gradient of metal concentration with distance downstream was revealed. Statistical analysis revealed the Cu, Mn, and Zn were associated with clay and silt, soil organic matter, organic carbon, and carbonates, all of which existed as extraneous, uncontrolled variables. Adjusted metal concentrations, obtained with covariate analyses, confirmed the increasing gradient downstream. Clay and silt also increased downstream. Some toxic substances may have leached into the riverbed; possible mechanisms for this process are also discussed and further study to substantiate or disprove this hypothesis is recommended.
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Wijesundara, Chandra. "Response of corn to high levels of CuSO₄ and ZnSO₄ applications." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/45959.

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High levels of Cu and Zn application to agricultural soils are considered to pose a potential hazard to plants and animals. The levels of Cu and Zn which can be safely added to cropland have yet to be established. This study was conducted on a Davidson silty clay (Rhodic Paleudult) to determine the response of corn (Zea mays L.) to cumulative application of up to 469 kg Cu and 1032 kg Zn ha⁻¹ as sulfates over the 22-year period from 1967 through 1988. Neither corn grain nor silage yield was affected by the metal additions even though the cumulative amount of Cu and Zn added exceeded the maximum allowable Cu and Zn loading rates based on the U.S. Environmental Protection Agency guidelines (i.e., 250 kg Cu and 560 kg Zn ha⁻¹) for this soil. The twenty-first annual application of Cu as CuSO₄, increased Cu concentrations in ear leaves. However, Cu concentrations in ear leaves were unaffected by the twenty-second year of Cu application. Concentrations of Zn in ear leaves were increased by the high level of Zn application during the two years of the study. Twenty-first year Cu and Zn concentrations in com grain were not increased by the high levels of Cu and Zn sulfates. All grain and ear leaf Cu and Zn concentrations were within the normal ranges from the high amount of metal application. The DTPA extractable Cu and Zn in the soil increased with an increase in level of applied Cu and Zn. More Cu and Zn were extracted from the soil by the Mehlich-3 method than by the DTPA method. This higher rate of extraction was attributed to the ethylenediaminetetraacetic acid (EDTA) in the Mehlich-3 solution.
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Pietrzak, Kornel. "Fabrication and studies of porous coatings containing calcium, magnesium and zinc on a titanium substrate for mechanical engineering applications : PhD thesis summary : [synopsis]." Rozprawa doktorska, [s.n.], 2021. http://dlibra.tu.koszalin.pl/Content/1316.

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Ramesh, Sunita. "Molecular mechanism of zinc uptake and regulation in cereals." Title page, table of contents and abstract only, 2002. http://web4.library.adelaide.edu.au/theses/09PH/09phr1724.pdf.

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Bibliography: leaves 174-204. "This work provides a starting point for understanding the molecular mechanisms of zinc uptake and the regulation of zinc transport in cereals. Zinc efficient cereals would yield more on soild with low zinc and could potentially result in increased zinc content grain."
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Mfeka, Nonkululeko. "Morphology and mineral content of cowpea lines in response to planting date and zinc application rate." Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2672.

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Thesis (MTech (Agriculture))--Cape Peninsula University of Technology, 2017.
Cowpea (Vigna unguiculata (L.) Walp) is an important grain and fodder legume grown around the world. It is a dual purpose grain legume crop, providing food for man and livestock. Cowpea is identified as a potential crop to diversify food production, minimize production input by improving soil fertility and improve micronutrients of seed, therefore, improving human nutrition. There is limited information available on cowpea production and suitable agronomic practices including planting date to best suit different environmental conditions in South Africa. The objective of this study was therefore to i) evaluate two soil types (sandy and clay soil) and its effect on cowpea, yield components and mineral composition, ii) the effect of different planting date and iii) assess the effect of zinc fertilizer application rate on vegetative, reproductive parameters and mineral content of cowpea seed. A field trial was conducted in Agricultural Research Council (ARC), in two locations Nietvoorbij (clay loam soil) and Bien Donne’ (sandy soil) during the 2015 summer planting season. The trial layout was conducted in a randomised complete block design (RCBD) with five replicates. The factors of the study include three cowpea lines: Cowpea Veg1, M217 and Qukawa with zinc application rate of (0, 15 and 30 kg/ha) through soil application and two planting date (2 October and 2 November 2015). The following agronomic variables were collected, in both locations: germination rate, number of leaves, number of branches, plant height, number of seed per pod, number of pods per plant, pod length, pods per treatment, pod weight, 100 seed weight, morphological traits, moisture content and seed mineral content. Vegetative data was collected on a fourth-night basis on six middle plants per treatment and reproductive parameters were taken after harvest. The variables were subjected to ANOVA using software SAS (2012). Treatments were tested at 5% level of significance and differences between treatments were separated using LSD and DMRT of the SAS 2012 test. The results indicated that vegetative and reproductive parameters measured varied significantly among cowpea lines in each location and across locations due to different cowpea lines and soil type. Line Cowpea Veg1 and Qukawa were the best performing line in both vegetative and yield parameters across the two planting dates in 2015. These lines significantly obtained higher plant height than line M217. Yield and yield parameters were significantly affected by cowpea line. Qukawa obtained the highest seed yield at Bien Donne’ with a mean of 1184.2 kg/ha and seed yield of 686.25 kg/ha for Cowpea Veg1 at Nietvoorbij. The second planting date (2 November 2015) improved germination of plants across the two locations, therefore improving vegetative growth. Zinc (Zn) fertilizer significantly improved plant height across all treatments. An inconsistent response to yield parameters due to Zn application rate was observed. However, though not significant, Zn application of 15 kg/ha increased most of the measured parameters. It was concluded that line Cowpea Veg1 and Qukawa were the best performing lines. The second planting date (2 November) increase germination rate for both locations. It is therefore, recommended that future research should evaluate Zn fertilizer time of application.
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Tadayyon, Ali, Sedigheh Beheshti, and Mohammad Pessarakli. "Effects of sprayed humic acid, iron, and zinc on quantitative and qualitative characteristics of niger plant ( Guizotia abyssinica L.)." Taylor & Francis, 2017. http://hdl.handle.net/10150/626135.

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In order to investigate the effect of foliar application of organic fertilizer and micronutrients on quantitative and qualitative characteristics of Niger plant, a field experiment was conducted in a complete randomized block design with three replications at Shahrekord University Research Farm during the years 2013-2014. Treatments included three levels of humic acid (1, 3, and 6 liters of humic acid per hectare), iron (4 parts per million, ppm), zinc (4 parts per million, ppm) and control (without humic acid iron, and zinc). In this experiment, traits of the number of heads per plant, seeds number per head, 1000 seeds' weight, grain yield, and also oil and protein content were evaluated. The findings showed that foliar application of humic acid, zinc and iron resulted in a significant increase in all analyzed traits. The most significant plant response was obtained with the use of 6 liters humic acid per hectare, and the second most significant plant response was seen with the sprayed zinc treatment which was probably due to limited absorption and deficiency of these elements in the tested soil.
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Books on the topic "Zinc content"

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Schneider, Orren D. Comparison of zinc versus non-zinc corrosion control for lead and copper. Denver, CO: Water Research Foundation, 2011.

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Gibb, James P. Retention of zinc, cadmium, copper, and lead by geologic materials. Cincinnati, OH: U.S. Environmental Protection Agency, Hazardous Waste Engineering Research Laboratory, 1987.

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International Symposium on "Zinc in Soils and Plants" (1993 University of Western Australia). Zinc in soils and plants: Proceedings of the International Symposium on "Zinc in Soils and Plants," held at the University of Western Australia, 27-28 September, 1993. Dordrecht: Kluwer Academic Publishers, 1993.

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Cabała, Jerzy. Metale ciężkie w środowisku glebowym olkuskiego rejonu eksploatacji rud Zn-Pb. Katowice: Wydawn. Uniwersytetu Śląskiego, 2009.

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Chudzińska, Ewa. Genetic diversity of Scots pine (Pinus sylvestris L.) as an expression of adaptation to heavy industrial pollution: A case study of the population from Miasteczko Śląskie = Zróżnicowanie genetycne sosny zwyczajnej (Pinus sylvestris L.) jako wyraz adaptacji do silnych zanieczyszczeń przemysłowych : na przykładzie populacji z Miasteczka Śląskiego. Poznań: Wydawnictwo Naukowe UAM, 2013.

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Miyoshi, Kazuhisa. Abrasion and deformed layer formation of manganese-zinc ferrite in sliding contact with lapping tapes. [Cleveland, Ohio: National Aeronautics and Space Administration, Lewis Research Center, 1986.

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Greulich, Peter. Schwermetalle in Fichten und Böden im Burgwald (Hessen): Untersuchungen zur räumlichen Variabilität der Elemente Blei, Cadmium, Nickel, Zink, Calcium und Magnesium, unter besonderer Berücksichtigung des Reliefeinflusses. Marburg/Lahn: Im Selbtsverlag der Marburger Geographischen Gesellschaft, 1988.

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Griepink, B. The certification of the contents (mass fraction) of carbon, hydrogen, nitrogen, chlorine, arsenic, cadmium, manganese, mercury, lead, selenium, vanadium and zinc in three coals: Gas coal CRM No.180, coking coal CRM No.181, steam coal CRM No.182. Luxembourg: Commission of the European Communities, 1986.

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Zachara, John Michael. A solution chemistry and electron spectroscopic study of zinc adsorption and precipitation on calcite. 1987.

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Cold Regions Research and Engineering Laboratory (U.S.), ed. Effectiveness and variability of digestion procedures for zinc determination in aged, contaminated soils. Hanover, N.H: U.S. Army Corps of Engineers, Cold Regions Research & Engineering Laboratory, 1992.

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Book chapters on the topic "Zinc content"

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Bartelloni, M., D. Canale, P. M. Giorgi, P. Turchi, P. Meschini, P. Giannotti, and G. F. Menchini Fabris. "Evaluation of zinc content in human spermatozoa." In Morphological Basis of Human Reproductive Function, 225–28. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4613-1953-5_31.

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Yilmaz, A., H. Ekiz, I. Gültekin, B. Torun, S. Karanlik, and I. Cakmak. "Effect of seed zinc content on grain yield and zinc concentration of wheat grown in zinc-deficient calcareous soils." In Plant Nutrition for Sustainable Food Production and Environment, 283–84. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-009-0047-9_82.

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Gouri, K., and S. H. Raza. "Copper and Zinc Content in the Food Commodities of Hyderabad." In Environmental Stress: Indication, Mitigation and Eco-conservation, 315–22. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-015-9532-2_27.

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Medina, J. F., A. Wetterholm, O. RåDmark, R. Shapiro, J. Z. HaeggströM, B. L. Vallee, and B. Samuelsson. "Mutations of the Three Zinc-Ligands of Leukotriene A4 Hydrolase: Effects on Zinc Content and Enzyme Activities." In Eicosanoids and Other Bioactive Lipids in Cancer, Inflammation and Radiation Injury, 43–46. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-3520-1_10.

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Calayugan, Mark Ian C., B. P. Mallikarjuna Swamy, Chau Thanh Nha, Alvin D. Palanog, Partha S. Biswas, Gwen Iris Descalsota-Empleo, Yin Myat Myat Min, and Mary Ann Inabangan-Asilo. "Zinc-Biofortified Rice: A Sustainable Food-Based Product for Fighting Zinc Malnutrition." In Rice Improvement, 449–70. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-66530-2_13.

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AbstractThe lack of dietary diversity among poor communities has led to nutritional consequences, particularly zinc deficiency. An adequate intake of mineral- and vitamin-rich food is necessary for achieving and maintaining good health. Zinc is one of the micronutrients considered essential to improve human health and decrease the risk of malnutrition. Biofortification of rice through breeding is a cost-effective and sustainable strategy to solve micronutrient malnutrition. The Biofortification Priority Index prepared by HarvestPlus clearly identified several countries in Asia with an immediate need for Zn biofortification. The International Rice Research Institute (IRRI) and its national partners in target countries are making efforts to develop Zn-biofortified rice varieties. The first set of high-Zn rice varieties has been released for commercial cultivation in Bangladesh, India, the Philippines, and Indonesia. Efforts have begun to mainstream grain Zn to ensure that the Zn trait becomes an integral part of future varieties. Huge scope exists to apply advanced genomics technologies such as genomic selection and genome editing to speed up high-Zn varietal development. An efficient rice value chain for Zn-biofortified varieties, quality control, and promotion are essential for successful adoption and consumption. The development of next-generation high-Zn rice varieties with higher grain-Zn content, stacking of multiple nutrients, along with good grain quality and acceptable agronomic traits has to be fast-tracked. Healthier rice has a large demand from all stakeholders, so we need to keep up the pace of developing nutritious rice to meet the demand and to achieve nutritional security.
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Kaur, Lovenpreet, Natasha Sharma, and Monika Garg. "Molecular breeding for enhancing iron and zinc content in wheat grains." In Molecular breeding in wheat, maize and sorghum: strategies for improving abiotic stress tolerance and yield, 146–69. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789245431.0008.

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Abstract This chapter provides information on the importance of biofortification as a cheap, sustainable and environmentally friendly approach to increase micronutrient contents in plants. The merging of breeding approaches with genetic engineering techniques, such as quantitative trait locus analysis, marker-assisted breeding, gene cloning and gene transformation from wild wheat relatives, in order to develop micronutrient-rich wheat cultivars is also highlighted.
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Hanum, Hamidah, and Yaya Hasanah. "Effet of Straw Compost and Phosphorus and Zinc Fetilizer on The Content of Phosphorus and Zinc in Paddy." In Proceeding of the 1st International Conference on Tropical Agriculture, 109–15. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-60363-6_10.

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de Oliveira, Caio Cesar Spindola, and Daniel Dayrell Pereira. "Simulation of an Alternative Direct Leaching Process for High Iron Content Zinc Concentrates." In The Minerals, Metals & Materials Series, 405–15. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-37070-1_35.

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Työppönen, Jouko T., and Paul O. Lindberg. "Hepatic and Splenic Content of Iron, Copper, Zinc, and Manganese in Anemic Mink." In Trace Elements in Man and Animals 6, 577–78. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4613-0723-5_206.

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Koudrine, A. V., and A. V. Skalny. "Gallium Nitrate and Zinc Content in Peripheral Blood Lymphocytes of Patients with Lung Cancer." In Trace Elements in Man and Animals 10, 640. New York, NY: Springer US, 2002. http://dx.doi.org/10.1007/0-306-47466-2_207.

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Conference papers on the topic "Zinc content"

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Stolyarchuk, Valentyna, and Svеtlana Dudnyk. "INCREASING ZINC CONTENT IN CAKE PRODUCTS." In TENDENZE ATTUALI DELLA MODERNA RICERCA SCIENTIFICA. European Scientific Platform, 2020. http://dx.doi.org/10.36074/05.06.2020.v3.31.

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Han, Wenlin, and Madhura Ansingkar. "Discovery of Elsagate: Detection of Sparse Inappropriate Content from Kids Videos." In 2020 Zooming Innovation in Consumer Technologies Conference (ZINC). IEEE, 2020. http://dx.doi.org/10.1109/zinc50678.2020.9161808.

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Assis, G., and C. Cruz. "Zinc content in liver and kidney of piglets slaughtered in Portugal." In Safe Pork 2015: Epidemiology and control of hazards in pork production chain. Iowa State University, Digital Press, 2015. http://dx.doi.org/10.31274/safepork-180809-307.

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"Research of zinc-containing humic compounds wound-healthing properties and zinc assay content in biomaterial after their topical application." In Seventh International Conference on Humic Innovative Technologies "Humic substances and technologies for resilience" (HIT – 2022). NP CBR "Humus Sapiens", 2022. http://dx.doi.org/10.36291/hit.2022.055.

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Murakami, K., and M. Shimada. "Development of Thermal Spray Coatings with Corrosion Protection and Antifouling Properties." In ITSC2009, edited by B. R. Marple, M. M. Hyland, Y. C. Lau, C. J. Li, R. S. Lima, and G. Montavon. ASM International, 2009. http://dx.doi.org/10.31399/asm.cp.itsc2009p1041.

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Abstract In this investigation, aluminum-copper, aluminum-zinc, and zinc coatings were flame sprayed onto a sand-blasted mild steel substrate. The coatings were immersed in seawater and were examined on a monthly basis using EDS and XRD analysis to assess corrosion and marine fouling behaviors. The spraying and test procedures are described and the results are presented and discussed. Zinc and aluminum-zinc coatings with high zinc content proved to have good anti-corrosion and anti-fouling properties, but the aluminum-copper coatings did not.
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Gladyshev, S. V., and D. Nurhadiyanto. "Disposal of copper electrofining solutions." In Challenges of Science. Institute of Metallurgy and Ore Beneficiation, Satbayev University, 2021. http://dx.doi.org/10.31643/2021.08.

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The paper presents studies of the processing of spent copper electrolyte from the processing of non-ferrous metal scrap at a copper smelter in Kazakhstan. For the processing of the spent electrolyte, a stage-by-stage neutralization was carried out using zinc sublimates and potash. As a result of the first stage of neutralization with zinc sublimations to pH 4.7, a precipitate with a content of PbO 44.69 %; PO2 16.36 % was obtained. After processing the sediment with an alkaline solution, carbonization and melting at a temperature of 900 oC, metallic lead and tin-containing slag with a content of SnO2 of 16.36 % were obtained. As a result of the second stage of neutralization with potash to pH 7.1, a precipitate was obtained-with a CuO content of 76.45 %. After the third stage of neutralization with potash to pH 9.5, a precipitate with a content of NiO 27.63 % and ZnO 55.75 % was obtained. After treatment of the precipitate with a solution containing 100 g / dm3 KOH, a zinc-containing solution with a ZnO content of 225.0 g/dm3 and a precipitate were obtained, after calcination of which nickel oxide with a NiO content of 89.14 % was obtained.
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Utkin A.A., Utkin A. A. "TRACE ELEMENTS AND SULFUR IN THE SOILS OF REFERENCE SITES OF THE VLADIMIR REGION." In Agrobiotechnology-2021. Publishing house of RGAU - MSHA, 2021. http://dx.doi.org/10.26897/978-5-9675-1855-3-2021-55.

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It was determined that the studied soils had a high and very high availability of mobile boron, zinc, copper and low – molybdenum and sulfur. The average content of boron, zinc and copper increased during the observation period, and sulfur decreased.
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Petrenko, S. V., Yu V. Zhiltsova, A. N. Batyan, E. A. Rafalskaya, T. S. Opanasenko, V. Ch Mozheiko, H. Arnepesova, and M. S. Petrenko. "THE STATE OF THE THYROID SYSTEM IN CHILDREN OF PRIMARY SCHOOL AGE AND PREGNANT WOMEN OF OSTROVETS DISTRICT OF GRODNO REGION." In SAKHAROV READINGS 2022: ENVIRONMENTAL PROBLEMS OF THE XXI CENTURY. International Sakharov Environmental Institute of Belarusian State University, 2022. http://dx.doi.org/10.46646/sakh-2022-2-122-125.

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Taking into account the important role of a number of essential trace elements in protecting the thyroid gland from the action of negative anthropogenic and natural factors in critical groups of the population living in the area where the Belarusian NPP is located, the body’s provision with selenium, zinc and iodine for primary school children and pregnant women was studied. For the first time, a significant decrease in the content of both selenium and zinc and iodine in the body of pregnant women was established in comparison with republican indicators, while in children no significant changes in the provision of these trace elements were detected. A negative correlation between the volume of the thyroid gland and the content of the trace element selenium and zinc in the body in pregnant women and in children according to Spearman was revealed. The revealed dependence may indicate potentiation of the development of goiter with a deficiency of selenium and zinc in the body.
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KURKA, Vladislav, Jaroslav PINDOR, Jozef VLČEK, and Petr JONŠTA. "Reduction of unwanted zinc content in metallurgical wastes and design of rotary kiln." In METAL 2019. TANGER Ltd., 2019. http://dx.doi.org/10.37904/metal.2019.677.

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Mayasari, Novi, Ahmad Fizri Afriandana, Endang Yuni Setyowati, and Lia Budimulyati Salman. "Prepartum Zinc Supplementation in Dairy Cows and Its Effect on Plasma Calcium, Titers Antibodies and Milk Zinc Content in Postpartum Dairy Cow." In 6th International Seminar of Animal Nutrition and Feed Science (ISANFS 2021). Paris, France: Atlantis Press, 2022. http://dx.doi.org/10.2991/absr.k.220401.038.

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Reports on the topic "Zinc content"

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Савосько, Василь Миколайович, Юлія Віліївна Бєлик, Юрій Васильович Лихолат, Герман Хайльмейер, Іван Панасович Григорюк, Ніна Олександрівна Хромих, and Тетяна Юріївна Лихолат. The Total Content of Macronutrients and Heavy Metals in the Soil on Devastated Lands at Kryvyi Rih Iron Mining & Metallurgical District (Ukraine). Geology-dnu-dp.ua, 2021. http://dx.doi.org/10.31812/123456789/4286.

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The relevance of the research is due to the need to develop technologies for phytoremediation of the devastated lands in the mining and metallurgical regions of Ukraine and the world. In this regard, the creation of tree plantations adapted to the ecological conditions of such territories is considered by many experts as the most promising option for innovative technologies. However, the development of artificial woodlands requires knowledge of the pedogeochemical character- istics of devastated lands. The aim of the work was to carry out a comparative analysis of the macronutrients and heavy metals gross forms content in the soils of the devastated lands of the Kryvyi Rih mining and metallurgical region. The field studies focused on five contrasting monitoring sites of the Petrovsky dump (Central Kryvorizhzhya), which has a typical age and composition of rocks for the region. Soil sampling, drying, sieving, and sample preparation (sintering in a muffle furnace) were done in accordance with classical techniques. The concentrations of macronutrients (potassium, sodium, calcium, magnesium, sulfur, and phosphorus) and heavy metals (iron, manganese, zinc, copper, lead, and cadmium) were determined using an Inductively Coupled Plasma Mass Spectrometry (ICP- MS) X-Series 2 (Thermo Fisher Scientific, USA). The analytical part of our research was carried out on the basis of the laboratory of the Institute of Biosciences, Freiberg University of Technology and Mining Academy (Freiberg, Germany). At monitoring sites, significant differences were found in the content of macronutrients gross forms, and their variation relative to the control values as well. Potassium and sodium concentrations generally differed slightly or were close to control levels. The results of determining the content of calcium, magnesium and phosphorus indicate a significant deficiency or excess of these macronutrients in the soils of the devastated lands. An increased sulfur content was found in the soils of all monitoring sites, in some cases 4 times higher than the control level. The measured content of gross forms of iron, manganese, copper, cadmium and, partially, zinc in the soils of different monitoring sites exceeded the control values by 5.5 – 5.9 times. Thus, the analysis of the research results made it possible to establish that the soils of the devastated lands of the Petrovsky dump are characterized by unfavorable properties for the growth of most species of woody plants.
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Paran, Ilan, and Allen Van Deynze. Regulation of pepper fruit color, chloroplasts development and their importance in fruit quality. United States Department of Agriculture, January 2014. http://dx.doi.org/10.32747/2014.7598173.bard.

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Pepper exhibits large natural variation in chlorophyll content in the immature fruit. To dissect the genetic and molecular basis of this variation, we conducted QTL mapping for chlorophyll content in a cross between light and dark green-fruited parents, PI 152225 and 1154. Two major QTLs, pc1 and pc10, that control chlorophyll content by modulation of chloroplast compartment size in a fruit-specific manner were detected in chromosomes 1 and 10, respectively. The pepper homolog of GOLDEN2- LIKE transcription factor (CaGLK2) was found as underlying pc10, similar to its effect on tomato fruit chloroplast development. A candidate gene for pc1was found as controlling chlorophyll content in pepper by the modulation of chloroplast size and number. Fine mapping of pc1 aided by bulked DNA and RNA-seq analyses enabled the identification of a zinc finger transcription factor LOL1 (LSD-One-Like 1) as a candidate gene underlying pc1. LOL1 is a positive regulator of oxidative stress- induced cell death in Arabidopsis. However, over expression of the rice ortholog resulted in an increase of chlorophyll content. Interestingly, CaAPRR2 that is linked to the QTL and was found to affect immature pepper fruit color in a previous study, did not have a significant effect on chlorophyll content in the present study. Verification of the candidate's function was done by generating CRISPR/Cas9 knockout mutants of the orthologues tomato gene, while its knockout experiment in pepper by genome editing is under progress. Phenotypic similarity as a consequence of disrupting the transcription factor in both pepper and tomato indicated its functional conservation in controlling chlorophyll content in the Solanaceae. A limited sequence diversity study indicated that null mutations in CaLOL1 and its putative interactorCaMIP1 are present in C. chinensebut not in C. annuum. Combinations of mutations in CaLOL1, CaMIP1, CaGLK2 and CaAPRR2 are required for the creation of the extreme variation in chlorophyll content in Capsicum.
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Jander, Georg, and Daniel Chamovitz. Investigation of growth regulation by maize benzoxazinoid breakdown products. United States Department of Agriculture, January 2015. http://dx.doi.org/10.32747/2015.7600031.bard.

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Introduction Previous research had suggested that benzoxazinoids, a class of defensive metabolites found in maize, wheat, rye, and wild barley, are not only direct insect deterrents, but also influence other areas of plant metabolism. In particular, the benzoxazinoid 2,4-dihydroxy-7-methoxy-2H-1,4-benzoxa- zin-3(4H)- one (DIMBOA) was implicated in: (i) altering plant growth by interfering with auxin signaling, and (ii) leading to the induction of gene expression changes and secondary plant defense responses. The overall goal of this proposal was to identify mechanisms by which benzoxazinoids influence other aspects of plant growth and defense. Specifically, the following hypotheses were proposed to be tested as part of an approved BARD proposal: Benzoxazinoid breakdown products directly interfere with auxin perception Global changes in maize and barley gene expression are induced by benzoxazinoid activation. There is natural variation in the maize photomorphogenic response to benzoxazinoids. Although the initial proposal included experiments with both maize and barley, there were some technical difficulties with the proposed transgenic barley experiments and most of the experimental results were generated with maize. Summary of major findings Previous research by other labs, involving both maize and other plant species, had suggested that DIMBOA alters plant growth by interfering with auxin signaling. However, experiments conducted in both the Chamovitz and the Jander labs using Arabidopsis and maize, respectively, were unable to confirm previously published reports of exogenously added DIMBOA effects on auxin signaling. Nevertheless, analysis of bx1 and bx2 maize mutant lines, which have almost no detectable benzoxazinoids, showed altered responses to blue light signaling. Transcriptomic analysis of maize mutant lines, variation in inbred lines, and responses to exogenously added DIMBOA showed alteration in the transcription of a blue light receptor, which is required for plant growth responses. This finding provides a novel mechanistic explanation of the trade-off between growth and defense that is often observed in plants. Experiments by the Jander lab and others had demonstrated that DIMBOA not only has direct toxicity against insect pests and microbial pathogens, but also induces the formation of callose in both maize and wheat. In the current project, non-targeted metabolomic assays of wildtype maize and mutants with defects in benzoxazinoid biosynthesis were used to identify unrelated metabolites that are regulated in a benzoxazinoid-dependent manner. Further investigation identified a subset of these DIMBOA-responsive compounds as catechol, as well as its glycosylated and acetylated derivatives. Analysis of co-expression data identified indole-3-glycerol phosphate synthase (IGPS) as a possible regulator of benzoxazinoid biosynthesis in maize. In the current project, enzymatic activity of three predicted maize IGPS genes was confirmed by heterologous expression. Transposon knockout mutations confirmed the function of the maize genes in benzoxazinoid biosynthesis. Sub-cellular localization studies showed that the three maize IGPS proteins are co-localized in the plastids, together with BX1 and BX2, two previously known enzymes of the benzoxazinoid biosynthesis pathway. Implications Benzoxazinoids are among the most abundant and effective defensive metabolites in maize, wheat, and rye. Although there is considerable with-in species variation in benzoxazinoid content, very little is known about the regulation of this variation and the specific effects on plant growth and defense. The results of this research provide further insight into the complex functions of maize benzoxazinoids, which are not only toxic to pests and pathogens, but also regulate plant growth and other defense responses. Knowledge gained through the current project will make it possible to engineer benzoxazinoid biosynthesis in a more targeted manner to produce pest-tolerant crops without negative effects on growth and yield.
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