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... This study aims to determine and compare the bacterial community and functional profiles associated with serpentine sites, innate hyper-accumulating weed, downgradient agricultural farmlands and non-serpentine sites using 16S rRNA gene sequencing. Elemental analysis revealed that the serpentine rock and weathered soil have higher magnesium, nickel, chromium, magnesium/calcium and lower calcium/mag ...
Dulce Montserrat Navarrete Gutiérrez; A. Joseph Pollard; Antony van der Ent; Michel Cathelineau; Marie-Noëlle Pons; Jesús A. Cuevas Sánchez; Guillaume Echevarria
... Nickel hyperaccumulation in Blepharidium guatemalense Standl. (Rubiaceae) was found in the tropical forests of south-eastern Mexico. This study aimed to document the geographic extent of nickel hyperaccumulation in this species, to understand its process of hyperaccumulation and to explore nickel distribution within the tissues of this plant. To accomplish these objectives, a complete non-destruct ...
... In order to determine the heavy metal amounts of white birch afforestation, cobalt (Co), chrome (Cr), arsenic (As) and cadmium (Cd) and manganese (Mn), zinc (Zn), nickel (Ni), and lead (Pb) concentrations were calculated within the scope of this study. And it is seen that heavy metal concentrations in soil and plant tissues varied. The highest concentration of heavy metals in soil was discovered i ...
... The hyperaccumulator Pycnandra acuminata is a New Caledonian rainforest tree known to have the highest concentration of nickel in any living organism, with 25 wt% nickel in its latex. All trees (with a diameter of >10 cm) and soil profiles in a 0.25‐hectare permanent plot were sampled to assess the biogeochemical compartmentalisation of nickel in a dense stand of P. acuminata trees. Nickel stable ...
... The presence of contaminants of emerging concern (CECs) in wastewater treatment plant effluents is a significant underlying health risk and environmental concern. CECs consist of a wide variety of contaminants, including pharmaceuticals and personal care products, hormones, steroids, alkyl-phenols, flame retardants and pesticides. Their impact is of particular relevance to agricultural settings du ...
... To meet future technological demands of our growing global community new sources of industry critical metals need to be identified. To meet these demands, extracting minerals from larger, lower grade deposits across most commodities is required, which in turn generates ever increasing amounts of mine wastes. We propose that agromining could be used to enables access to unconventional resources not ...
... Odontarrhena muralis is one of the most promissing plant species for Ni phytomining, and soil amendments can further increase its Ni phytoextraction ability. Here we investigated whether Ni phytomining/phytoremediation using this Ni hyperaccumulator can benefit from applying citric acid to a serpentine soil that is naturally enriched in Ni (>1000 mg kg⁻¹). Synchrotron micro X-ray fluorescence (μ-S ...
... AIMS: Knowledge on the ecophysiology of cobalt hyperaccumulator species is limited. The nickel hyperaccumulator Rinorea cf. bengalensis from Borneo can accumulate high concentrations of cobalt in nature. This study investigates the cobalt accumulation potential of Rinorea cf. bengalensis in relation to nickel concentrations in soils and the subsequent tissue and cellular-level distributions of cob ...
cobalt; copper; hyperaccumulators; mesic conditions; models; niches; soil; soil toxicity; toxicity; vegetation; Republic of the Congo
Abstract:
... Ecological niche modelling helps us to understand the spatial assembly of species in heterogeneous environments. Three patterns have been widely reported in the research literature regarding the relationship between realised niches and macronutrient concentration gradients: (1) species’ optima are unevenly distributed, with a higher frequency in mesic conditions; (2) species’ response curves are n ...
... BACKGROUND: Phytoextraction is an in situ technique that can be applied to minerals and mining wastes using hyperaccumulator plants to purposely bio-concentrate high levels of metals or metalloids into their shoots in order to remove them from the substrate, while achieving monetary gain. Phytoextraction can be applied to a limited number of elements depending on the existence of hyperaccumulator ...
cobalt; copper; drought tolerance; ex situ conservation; flora; germination; hyperaccumulators; seed storage; storage quality; threatened species; viability; Democratic Republic of the Congo
Abstract:
... In Katanga (southeastern Democratic Republic of Congo), the flora of copper and cobalt deposits is highly threatened by mining. Until mining activity ceases and restoration can take place, seed banking is one of the strategies to be considered for the conservation of these metallophytes of which 32 are strict endemics. In the tropics, however, many species have recalcitrant (desiccation-sensitive) ...
... BACKGROUND: HMA4 transporters are involved in the transport and binding of divalent heavy metals (Cd, Zn, Pb [lead] and Co [cobalt]). In general, as efflux pumps, HMA4 transporters can increase the heavy metal tolerance of yeast and Escherichia coli. Additional research has shown that the C-terminus of HMA4 contains a heavy metal-binding domain and that heterologous expression of a portion of pept ...
... In this work, we present the results of the investigation of trace elements (Fe, Mg, Ni, Zn, Cu, Cr, Co, Cd, Pb) accumulation potential of Noccaea kovatsii (Heuff.) F. K. Mey., from the Balkan Peninsula. The study included eight populations from ultramafic soils, six from Bosnia and Herzegovina, and two from Serbia. Principal component analysis (PCA) was used to reveal relationships of elements in ...
... Nickel hyperaccumulators are a group of particular plant species which possess high efficient Ni uptake transport systems in their roots, the mechanisms of which however are far from being understood. Study on the interactions between nickel and other trace metals during root absorption process can provide insights into the Ni uptake patterns. Therefore, this work used model hyperaccumulator speci ...
... The metallophyte Arabidopsis halleri thrives across an extremely broad edaphic range. Zn hyperaccumulation is found on soils differing in available Zn by up to six orders of magnitude, raising the question as to whether a common set of mechanisms confers this species‐wide ability. Elevated root concentrations of the metal chelator nicotianamine due to strong constitutive expression of AhNAS2 are i ...
... BACKGROUND AND AIMS: Mechanisms and transporters responsible for Ni uptake in plants are largely unknown. To characterize Ni uptake mechanisms in Ni hyperaccumulators, we compared the effects of channel blockers, high Ca, high Fe, Zn, Mn, Cu, or Co, and low temperature on Ni uptake in two Iranian serpentine endemics, Odontarrhena bracteata and (two populations of) O. inflata. METHODS: Ni uptake wa ...
... This study faces the characterization of the culturable microbiota of the facultative Ni-hyperaccumulator Alyssoides utriculata to obtain a collection of bacterial and fungal strains for potential applications in Ni phytoextraction.Rhizosphere soil samples and adjacent bare soil associated with A. utriculata from serpentine and non-serpentine sites were collected together with plant roots and shoo ...
... In the present day, plants are increasingly being utilized to safeguard the environment. In this study, we used Salsola crassa M. B. and Suaeda maritima L. Dumort for phytoremediation of water contaminated with heavy metals and simultaneous examination of the effect of industrial pollution on their root structures. After irrigation of a treatment group with wastewater and a control group with fres ...
... AIMS: Based on a recent taxonomic revision of the genus Odontarrhena in Albania, our work aimed at comparing the taxa and populations of this genus in terms of nickel accumulation and levels of other metals in relation to their concentrations in the soil at distinct Albanian ultramafic outcrops. METHODS: Several populations of different Odontarrhena species were sampled from 20 different outcrops ...
... Present paper investigates the phytoremediation of cobalt from wastewaters using Elodea canadensis. Bioaccumulation tests were conducted at various concentrations of cobalt ranging from 1 to 15 mg/L. Final concentrations of cobalt in wastewaters, after phytoremediation, were less than 1 mg/L. E. canadensis’ hyperaccumulator character with regard to cobalt is emphasised by the amount of cobalt reta ...
... PURPOSE: Agromining is a new technology that establishes agricultural systems on ultramafic soils in order to produce valuable metal compounds such as nickel (Ni), with the final aim of restoring a soil’s agricultural functions. But ultramafic soils are characterized by low fertility levels, and this can limit yields of hyperaccumulators and metal phytoextraction. The objectives of the present wor ...
... The foliar elemental profile of most plants reflects that of the soil on which plants grow in their natural habitat. The aim of this study was to elucidate foliar elemental profiles in the ultramafic flora of Kinabalu Park in Sabah, Malaysia. Kinabalu Park is ideal for studying plant elemental profiles because of its exceptionally rich flora and diversity in soil types. Foliar elemental profiles o ...
cobalt; copper; hyperaccumulators; leaf area; leaves; soil; toxicity; variance; Central Africa
Abstract:
... Studies on the relative contribution of inter- and intra-population trait variations in broad-niched species along edaphic gradients are still scarce. Here, we explore the variation of eight traits in five populations of Cyanotis longifolia, a broad-niched metallophyte thriving on very broad gradients of soil copper concentration in Central Africa. Variation at species level was decomposed into co ...
... In Mexico, ultramafic complexes are present in different regions from the northwest (Baja California Norte) to the southeast (Chiapas). In this paper, we present the results of the exploration of three ultramafic (serpentine) habitats in central and southern Mexico: Cuicatlán–Concepción Pápalo (Oaxaca), Tehuitzingo–Tecomatlán (Puebla), and San Juan de Otates (Guanajuato). Previous geology studies ...
... The aim of this study was to compare trace element profiles of Noccaea praecox (Wulfen) F. K. Mey. growing on ultramafic soils in different habitat types and to observe differences in uptake and translocation of trace elements. Physico-chemical characteristics of the soil and concentrations of P₂O₅, K₂O, Ca, Fe, Mn, Zn, Cu, Ni, Cr, Pb, Cd, and Co in plant samples were presented. Biological concent ...
Cerastium arvense; North Americans; chromium; cobalt; elemental composition; hyperaccumulators; iron; magnesium; nickel; soil; washing; Washington (state)
Abstract:
... A paper of Kruckeberg et al. (1993) reported the hyperaccumulation of nickel by Arenaria rubella at an ultramafic site at Olivine Bridge in the state of Washington, USA. Several aspects of the publication led the present authors to doubt the reliability of the data, leading to a reinvestigation of the behaviour of this species at this site. Extensive sampling of two species of the Caryophyllaceae, ...
... Orobanche nowackiana Markgr. is the only parasitic flowering plant in Europe which is an obligate serpentinophyte. This plant parasitizes the Ni hyperaccumulator Alyssum murale Waldst. & Kit. which grows in many areas including serpentine slopes of Mt. Komjan (Albania). The aims of the study were to investigate this host/parasite relationship from a biogeochemical point of view in order to evaluat ...
... Cornish Path-moss is one of the world’s rarest bryophytes, presently known from just three sites, former copper mines in the UK and Ireland. Covering the two UK sites, for the first time this study provides a set of location coordinates (x-, y- and z-axis) that is comprehensive, accurate and precise, in addition to investigating aspects of its ecology and assessing the success of trial habitat man ...
Francine Ilunga Kabeya; Paula Pongrac; Bastien Lange; Michel-Pierre Faucon; Johannes T. van Elteren; Martin Šala; Vid S. Šelih; Emilie Vanden Eeckhoudt; Nathalie Verbruggen
... Cobalt (Co) tolerance and accumulation were studied in three Haumaniastrum species: the obligate metallophyte (i.e. the strict endemic) Haumaniastrum robertii, its facultative metallophyte congener, H. katangense, and a species from nonmetalliferous soils, H. villosum. They were grown hydroponically and their growth during Co exposure was monitored.The two metallophytes did not grow in the absence ...
Asteraceae; cobalt; copper; hydroponics; hyperaccumulators; niches; rhizosphere; soil; toxicity; Democratic Republic of the Congo
Abstract:
... Advances on the ecology and evolution of adaptation to metal toxicity are based on studying metallophytes that are not restricted to soils strongly enriched in trace elements. The evolution of Cu and Co tolerance and accumulation, which principally occurs among the Copperbelt of Central Africa, is poorly known. In this paper, we studied Cu and Co tolerance and accumulation in a facultative metallo ...
... A metaproteomic approach, based on liquid chromatography-high resolution mass spectrometry (LC-HRMS) analysis, was followed to map the major bacterial metabolic functions associated with the rhizosphere of metal-tolerant and metal hyperaccumulator plants, growing in a serpentine soil naturally contaminated by heavy metals such as Ni, Co and Cr. In particular, an “in-house” bacterial protein databa ...
... AIMS: This study reveals the accumulation properties of Co from viewpoints of the analogy with Ni and also the variation of the other essential micro elements in the Co accumulator tree, Clethra barbinervis. METHODS: Seedlings of C. barbinervis were grown in single and mixed treatments in the rhizosphere containing Co, Ni, or both at three different concentrations (5, 50, and 500 μM). In roots, st ...
... Such activities as mining, metal ore smelting and the discharging of mining wastes lead to heavy metal contamination. Phytoremediation, including phytoextraction and phytostabilization, has been considered for a long time to be effective in remediating metal-polluted soils. This research assessed the chance of 40 plants (35 species) distributing on mining-influenced sites for phytoremediation purp ...
Bastien Lange; Antony van der Ent; Alan John Martin Baker; Guillaume Echevarria; Grégory Mahy; François Malaisse; Pierre Meerts; Olivier Pourret; Nathalie Verbruggen; Michel‐Pierre Faucon
cobalt; copper; dose response; field experimentation; hyperaccumulators; nickel; plant tissues; soil; wastes; Central Africa
Abstract:
... This review synthesizes contemporary understanding of copper–cobalt (Cu–Co) tolerance and accumulation in plants. Accumulation of foliar Cu and Co to > 300 μg g⁻¹ is exceptionally rare globally, and known principally from the Copperbelt of Central Africa. Cobalt accumulation is also observed in a limited number of nickel (Ni) hyperaccumulator plants occurring on ultramafic soils around the world. ...
... PURPOSE: Submerged macrophytes have an ability to absorb metals and metalloids either from the sediments via the roots, from the water by the leaves, or from both sources. The objectives of this study were (1) to test the hypothesis that metal and metalloid concentrations in water and sediments from sampling sites with submerged macrophytes are significantly lower than those from sampling sites wi ...
Populus nigra; Robinia pseudoacacia; absorption; cadmium; cities; cobalt; cytoplasm; high performance liquid chromatography; histidine; hyperaccumulators; leaves; mass spectrometry; nickel; spectrometers; sulfur; Turkey (country)
Abstract:
... We investigated the relationship between histidine, sulfur (S), cadmium (Cd), and cobalt (Co) in three hyperaccumulating plants, namely Morus L., Robinia pseudoacacia L., and Populus nigra L. The samples were collected around Gaziantep and Bursa cities because these two cities have more than 1,500,000 populations, in Turkey, as well as they are highly industrialized. Analyses for Cd, Co, and S wer ...
cobalt; habitats; hyperaccumulators; intraspecific variation; leaves; mineral content; polluted soils; reproductive traits; toxicity; Republic of the Congo
Abstract:
... Divergence in functional traits and their plasticity can occur between metallicolous and non-metallicolous populations, driven by the selective pressure of metal toxicity in metalliferous soils, which is often associated with other edaphic constraints. The intraspecific variation of functional traits and their plasticity in response to cobalt in the soil, among populations of Anisopappus chinensis ...
... AIMS: We aimed to evaluate the presence of the metal hyperaccumulation trait in the phylogeny of Plantago with emphasis on P. subgen. Coronopus. Considering that P. almogravensis is an Al-hyperaccumulator and that phylogenetic links have been described for other Al-hyperaccumulators, we hypothesized that we would find more Plantago taxa with this accumulation trait. We also enquired if other metal ...
... Landoltia punctata has been considered as a potential bioenergy crop due to its high biomass and starch yields in different cultivations. Cobalt and nickel are known to induce starch accumulation in duckweed. We monitored the growth rate, net photosynthesis rate, total chlorophyll content, Rubisco activity, Co2+ and Ni2+ contents, activity of antioxidant enzymes, starch content and activity of rel ...
... In the present study, nine native plant species were collected to determine their potential to clean up nine heavy metals from soil of a sewage sludge dump site. Almost all nine plant species grown at sewage sludge dump site showed multifold higher concentrations of heavy metals as compared to plants grown at the reference site. All the investigated species were characterized by a bioaccumulation ...
cobalt; ecosystems; ex situ conservation; hills; hyperaccumulators; indigenous species; mining; nontarget organisms; savannas; seedling emergence; seeds; species diversity; steppes; topsoil; Democratic Republic of the Congo; Republic of the Congo
Abstract:
... In southeastern Democratic Republic of Congo, unique metallophyte communities supporting numerous endemic species occurred on the highly mineralized copper cobalt (Cu–Co) hills throughout the province. These hills are economically valuable mineral reserves; mining activities represent therefore a threat to the long-term persistence of these communities. Ex situ conservation program was set up by a ...
... The influence of Fe oxides, Mn oxides and organic matter (OM) on the Cu and Co mobility in soil and accumulation in the metallophyte Anisopappus chinensis (Ac), as compared with Helianthus annuus (Ha), was experimentally investigated. Growth and accumulation response when increasing the exchangeable Cu and Co concentrations in soil were also investigated. Plants were cultivated on soil where conce ...
carbon; carbon nitrogen ratio; cobalt; copper; guidelines; habitat conservation; hyperaccumulators; manganese; mining; niches; nitrogen; pH; phosphorus; potassium; soil; woodlands; Democratic Republic of the Congo; Republic of the Congo
Abstract:
... In southeastern D. R. Congo, about 550 metallophytes grow on soils with high copper and cobalt concentrations, 57 of which are endemics to these metalliferous environments. About 70% of those endemics are considered threatened by destruction of habitats through mining activities. To provide guidelines for future restoration programs, the edaphic ecological niches of eight endemic metallophytes (i. ...
... Phyllanthus balgooyi (Phyllanthaceae), one of > 20 nickel (Ni) hyperaccumulator plant species known in Sabah (Malaysia) on the island of Borneo, is remarkable because it contains > 16 wt% Ni in its phloem sap, the second highest concentration of Ni in any living material in the world (after Pycnandra acuminata (Sapotaceae) from New Caledonia with 25 wt% Ni in latex). This study focused on the tiss ...
Nyssa; Phytolacca americana; chromium; cobalt; evolution; heavy metals; humans; hyperaccumulators; leaves; manganese; metal tolerance; mining; nickel; pollution; serpentine soils; streams; toxicity; ultramafic rocks; Maryland; North Carolina
Abstract:
... Heavy metals can be essential micronutrients in trace concentrations but are often toxic at high concentrations. Physiologically stressful concentrations of heavy metals occur in natural, geological outcrops or result from human activities, such as mining and pollution. Although metal toxicity restricts the growth of sensitive species, some plants are more tolerant. The evolution of metal-tolerant ...
biodiversity; cobalt; copper; ecosystems; endangered species; ex situ conservation; extinction; habitats; human health; hyperaccumulators; indigenous species; mining; phytoremediation; plant communities; polluted soils; soil-plant interactions; sustainable technology; Democratic Republic of the Congo
Abstract:
... BACKGROUND: Chemical soil factors play an important role in generating and maintaining plant diversity. Naturally metal-enriched habitats support highly distinctive plant communities consisting of many rare and endemic species. Species of these plant communities possess remarkable physiological adaptations and are now being considered key elements in the implementation of green technologies aimed ...
... A vulnerable point of the currently used approach to the search for the new species capable of abnormal accumulation (hyperaccumulation) of trace elements is that most studies have been conducted in laboratory conditions and focused on the determination of a limited number of elements. We propose a methodology that enables screening for multi-element accumulating plants. This methodology is based ...
bedrock; case studies; chemical analysis; chromium; cobalt; copper; habitats; hyperaccumulators; leaves; nickel; soil; zinc; Brazil; Malaysia; Sri Lanka
Abstract:
... BACKGROUND AND AIMS: Ultramafic soils are characterized by relatively high concentrations of nickel (Ni), chromium (Cr), and cobalt (Co). Globally, some ultramafic outcrops are also rich in copper (Cu) and other metals. The occurrence of Cu-accumulating plants on such soils is a very rare phenomenon so far only described from Sri Lanka. The objective of this study was to evaluate the elemental pro ...
... Serpentine (ultramafic) soils are generally deficient in essential plant nutrients such as phosphorus (P), potassium (K) and calcium (Ca) and often also have elevated concentrations of toxic trace elements such as, for example, nickel (Ni), chromium (Cr) and manganese (Mn). However, some serpentine areas have a species-rich plant cover, often with a few endemics. Thus, serpentine areas host valuab ...
... Cobalt (Co2+) inhibits vegetative growth of Lemna minor gradually from 1μM to 100μM. Fronds accumulated up to 21mgCo2+g−1 dry weight at 10μM external Co2+ indicating hyperaccumulation. Interestingly, accumulation of Co2+ did not decrease the iron (Fe) content in fronds, highlighting L. minor as a suitable system for studying effects of Co2+ undisturbed by Fe deficiency symptoms unlike most other p ...
... Metal hyperaccumulation may be an elemental defense, in which high concentrations of a metal in plant tissues decrease herbivore survival or growth rate. The Joint Effects Hypothesis suggests that a combination of metals, or a combination of a metal with an organic compound, may have an enhanced defensive effect. The enhancement may be additive or synergistic: in either case the concentration of a ...
... Three populations of the Brassicaceae Noccaea caerulescens: (i) the metallicolous Mt. Prinzera population (Italy), which have adapted to grow on serpentinite, a soil naturally rich in Ni, Co, Cr; (ii) the metallicolous La Calamine population (Belgium), which have adapted to growth on soil highly contaminated by Cd, Zn and Pb, and (iii) the non-metallicolous population growing near the town of Rožn ...
... Phytoremediation is a promising option for reclaiming soils contaminated with toxic metals, using plants with high potentials for extraction, stabilization and hyperaccumulation. This study was conducted in Cameroon, at the Bassa Industrial Zone of Douala in 2011, to assess the total content of 19 heavy metals and 5 other elements in soils and phytoremediation potential of 12 weeds. Partial extrac ...
... The application of vegetation cover for the phytomanagement of heavy metal-polluted soils needs prior investigation on the suitability of plant species. In this study, behaviors of Arrhenatherum elatius and Sonchus transcaspicus, two native perennial grasses that currently grow in a mine tailing, were investigated through plant metal concentration, phytotoxicity and their detoxification responses. ...
... To directly select submerged macrophytes with high accumulation capability from the field, 24 eutrophic lakes along the middle and lower reaches of the Yangtze River were investigated in the study. These eutrophic lakes have large amounts of heavy metals in both water and sediments because of human activities. The results showed that Najas marina is a hyperaccumulator of As and Cd, Ceratophyllum d ...
... Elemental defense is a relatively newly recognized phenomenon in which plants use elements present in their tissue to reduce damage by herbivores or pathogens. In the present study, neonates of the generalist herbivore, Spodoptera exigua (Hübner) (Lepidoptera: Noctuidae), were fed artificial diets amended with varying concentrations of Co, Cu, Ni, and Zn that are hyperaccumulated by plants to dete ...
... BACKGROUND: Plants that accumulate metal and metalloid trace elements to extraordinarily high concentrations in their living biomass have inspired much research worldwide during the last decades. Hyperaccumulators have been recorded and experimentally confirmed for elements such as nickel, zinc, cadmium, manganese, arsenic and selenium. However, to date, hyperaccumulation of lead, copper, cobalt, ...
... • Premise of the study: Plants that strongly accumulate metals may be practically beneficial, and also serve as novel resources for increasing fundamental understanding of plant biology. Australian Gossia (Myrtaceae) species are delineated by a conspicuous affinity for the heavy metal manganese (Mn), which is a micronutrient crucial to photosynthesis. This genus includes several Mn hyperaccumulato ...
... Populations of medicinal plants growing on serpentines and their respective soils were analyzed for Fe, Ni, Mn, Cr, Co, Cd, Cu, Zn, and Pb using inductively coupled plasma atomic emission spectrometry. Aqua regia extraction and 0.43 M acetic acid extraction were used for the quantification of pseudototal and bioavailable fractions, respectively, of elements in soil and nitric acid digestion for de ...
... Introduction - The cobalt is an essential element for leguminous plants but may be harmful for other species; for that reason determination of Co(II) is very important for the management of polluted areas and for discover plants with capacity for the hyperaccumulation of heavy metals, which has produced a growing necessity of fast, sensitive and selective analytical techniques. Objective - To deve ...
... The accumulation of toxic metals (Cd, Co, Cu and Ni) by Allium sativum plants was followed under hydroponic conditions. The toxic metals were applied at two concentrations (0.05 and 0.25mM). The effects of heavy metals on chlorophyll and carotenoid content, root length and amino acid exudation were examined to evaluate the impact of heavy metal accumulation on plant growth and development. A signi ...
... This study was conducted to determine the uptake of elements (Ag, Al, As, Ca, Cd, Co, Cu, Fe, Mn, Mo, Ni, Pb, P, S, Sb, Tl, U, W, Zn) by native gorse (Ulex europaeus) and heather (Calluna vulgaris), growing on abandoned tailings, Carnon Valley, Cornwall, UK. The metalliferous tailings are particularly As-rich (0.11–0.59wt% As) and contain acid-generating sulfides (pH 3.36–6.59). Since abandonment ...
... The aim of this study was to assess the accumulation of seven heavy metals (lead, cadmium, copper, zinc, chrome, nickel and cobalt). The investigations were conducted on twelve genotypes of willows which grow in the Potasze Forest Division Salicarium. The analysis facilitated quantification of concentrations of selected metals in plants and their comparison in relation to sorption ability of each ...
... Serpentine or ultramafic soils are produced by weathering and pedogenesis of ultramafic rocks that are characterized by high levels of Ni, Cr, and sometimes Co, but contain low levels of essential nutrients such as N, P, K, and Ca. A number of plant species endemic to serpentine soils are capable of accumulating exceptionally high concentrations of Ni, Zn, and Co. These plants are known as metal “ ...
... The efficiency of the absorption from the medium and accumulation by plant of ions of the heavy metals depends on many factors including plant age and its genotype. The heavy metals accumulation by 1-, 2- and 3-year-old plants was studied in the aspect of reclamation and revitalization effectiveness of demoted areas. Results of this study answer the question concerning the accumulation of seven he ...
... Serpentine soils, which contain relatively high concentrations of nickel and some other metals, are the preferred substrate for some plants, especially those that accumulate Ni in their tissues. In temperate regions more Ni-hyperaccumulator plants are found in Alyssum than in any other genus. In this study, serpentine soils of two areas (Marivan and Dizaj) in the west/northwest of Iran and also pe ...
Alyssum murale; leaves; heavy metals; phytotoxicity; metabolic sequestration; nickel; cobalt; zinc; hyperaccumulators; ion transport; X-ray fluorescence spectroscopy; computed tomography
Abstract:
... • The nickel (Ni) hyperaccumulator Alyssum murale has been developed as a commercial crop for phytoremediation/phytomining Ni from metal‐enriched soils. Here, metal co‐tolerance, accumulation and localization were investigated for A. murale exposed to metal co‐contaminants. • A. murale was irrigated with Ni‐enriched nutrient solutions containing basal or elevated concentrations of cobalt (Co) or z ...
... Pytoremediaton of arsenic (As) contamination using Chinese brake fern (Pteris vittata L.), an As hyperaccumulator has proven potential because of its cost-effectiveness and environmental harmonies. Aiming to investigate the elemental correlation in Chinese brake fern, 20 elements (As, Br, Ca, Ce, Co, Cr, Eu, Fe, Hf, La, Na, Nd, K, Rb, Se, Sm, Sr, Th, Yb and Zn) were measured in the fronds and root ...
... Iron deficiency causes oversynthesis of riboflavin in several yeast species, known as flavinogenic yeasts. However, the mechanisms of such regulation are not known. We found that mutations causing riboflavin overproduction and iron hyperaccumulation (rib80, rib81 and hit1), as well as cobalt excess or iron deficiency all provoke oxidative stress in the Pichia guilliermondii yeast. Iron content in ...
... Rhizosphere microorganisms harboring nickel hyperaccumulators, Rinorea bengalensis (Wall.) O. K. and Dichapetalum gelonioides ssp. andamanicum (King) Leenh. endemic to serpentine outcrops of Andaman Islands, India, were screened for their tolerance and accumulation of Ni. The rhizosphere soils from both the plants were rich in total and available Ni along with Co, Cr, Fe and Mg but poor in microbi ...
water pollution; heavy metals; cadmium; chromium; cobalt; nickel; lead; mine spoil; tropics; macrophytes; Eichhornia crassipes; Lemna minor; Azolla pinnata; biofiltration; hyperaccumulators; translocation (plant physiology); nitrogen; phosphorus; potassium; chemical constituents of plants; India
Abstract:
... Opencast coalmine effluent contains higher concentrations of Cd, Cr, Co, Ni and Pb. Biofiltration of these metals has been demonstrated successfully with the help of aquatic macrophytes i.e., E. crassipes, L. minor and A. pinnata. Experiments revealed E. crassipes reduced highest concentration of heavy metals followed by L. minor and A. pinnata on 20th days retention period. Plant tissue analysis ...
patents; cobalt; soil pollution; Alyssum (Brassicaceae); methodology; phytoremediation; nickel; soil pH; USDA; polluted soils; hyperaccumulators; United States
Abstract:
... The invention relates to recovering metals, such as nickel and cobalt, by phytomining or phytoextracting soils rich in metals wherein the desired metal is selectively accumulated in hyperaccumulator plants by adjusting the soil pH. The metals are ultimately recovered from above-ground plant tissues at economically acceptable levels without further contaminating the metal-containing sites. The inve ...
... Metal concentrations have been determined in shoots of 12 species considered as Cu and/or Co hyperaccumulators, collected from five subpopulations in a Cu/Co mine in Katanga. Samples have been subjected to three cleansing protocols (water, alconox, alconox + EDTA). Cu/Co concentrations were significantly higher when demineralised water was used to wash samples compared to more aggressive solutions ...
... The overexpression of serine acetyltransferase from the Ni-hyperaccumulating plant Thlaspi goesingense causes enhanced nickel and cobalt resistance in Escherichia coli. Furthermore, overexpression of T. goesingense serine acetyltransferase results in enhanced sensitivity to cadmium and has no significant effect on resistance to zinc. Enhanced nickel resistance is directly related to the constituti ...
... Serpentine soils are characterized by high levels of heavy metals (Ni, Co, Cr), and low levels of important plant nutrients (P, Ca, N). Because of these inhospitable edaphic conditions, serpentine soils are typically home to a very specialized flora including endemic species as the nickel hyperaccumulator Alyssum bertolonii. Although much is known about the serpentine flora, few researches have in ...
... Nickel phytoextraction using hyperaccumulator plants offers a potential for profit while decontaminating soils. Although soil pH is considered a key factor in metal uptake by crops, little is known about soil pH effects on metal uptake by hyperaccumulator plants. Two Ni and Co hyperaccumulators, Alyssum murale and A. corsicum, were grown in Quarry muck (Terric Haplohemist) and Welland (Typic Epiaq ...
platinum; patents; cobalt; chelating agents; soil pH; Alyssum (Brassicaceae); calcium; palladium; phytoremediation; nickel; ammonium fertilizers; USDA; hyperaccumulators; United States
Abstract:
... Nickel/cobalt, as well as platinum and palladium metal family members are recovered from soil by growing Brassicaceae plants, specifically Alyssum in soil containing nickel/cobalt as well as other metals. The soil is conditioned by maintaining a low pH, low calcium concentration, and the addition of ammonium fertilizer and chelating agents thereto. Nickel accumulation on the order of 2.5 percent o ...