gold accumulation plants

The research was conducted to evaluate the accumulation potential of some heavy metals in autochthonous plants around Bagega mining sites and to test their remediation potential. Soil sample and 16 different plant species were collected at four mining and gold processing sites. The content of heavy metals in the soil and different …

Investigators hope to increase this gold yield and thereby use such plants to "mine" for gold. Selenium may account for more than 1% of the dry weight of locoweed (Astragalus). If locoweed is eaten by livestock, the large amounts of selenium in these plants affect the animals' nervous systems, causing them to stagger about as if …

However, higher concentration accumulation of zinc in the plant (> 300 μ g − 1 in dry weight) causes physiological alteration and inhibition of growth (Cakmak, 2000 ). High z inc exposure in ...

Plants resort to a series of defence mechanisms that control uptake, accumulation and translocation of these dangerous elements and detoxify them by excluding the free ionic forms from the cytoplasm ... Metal accumulation by some …

The content of the tested heavy metals (mg kg −1) in soil collected from gold mining and processing sites at Bagega as well as the control soil were presented in Table 1.The content of all the studied metals was higher in the contaminated soil. Pb has the highest recorded content of 1021 mg kg −1, followed by Zn, Cd, and Cr with 18.5, 14.7, …

Plant metal analysis revealed that most species did not translocate metals to their aerial parts, therefore they behave as excluder plants. Polygonum aviculare accumulated Zn (9236 mg kg (-1)) at concentrations near to the criteria for hyperaccumulator plants. Jatropha dioica also accumulated high Zn (6249 mg kg (-1)) concentrations.

An experiment per species was designed with three replicates in a completely randomized design. The grown plants were subjected to AAS analysis, and the accumulation of the studied metals was in the order Zn < Pb < Cd < Cr, with the highest accumulation of Pb from the contaminated soil of 68 ± 5 mg kg 1 in the root of C. procera.

Terrestrial plants can internalize and translocate nanoparticles (NPs). However, direct evidence for the processes driving the NP uptake and distribution in plants is scarce at the cellular level. ... were investigated after 10 days of exposure of Arabidopsis thaliana to 10 mg·L-1 of negatively or positively charged gold NPs (∼12 nm) in gels ...

Money doesn't grow on trees — but gold might. An international team of scientists has found a way to grow and harvest …

QTLs for Zn and Cd accumulation have been mapped in two T. caerulescens intraspecific crosses . Assunção et al. (2006) found two QTLs for root Zn accumulation in an F 3 cross between plants from a Belgian calamine site (LC) and from a nonmetalliferous site in Luxemburg (LE), the latter with higher Zn accumulation …

The accumulation of total mercury and methylmercury in plant tissues was determined during the wet and dry seasons to establish the plants' variability in accumulation. The highest accumulation of total mercury was in the tissues of Phragmites australis with recorded concentrations of 806, 495, and 833 μg kg −1 in the roots, stem, …

The most common technique used for small-scale gold mining (SSGM) is amalgamation, which has dramatically increased the release of mercury into the …

native plants for heavy metals in mine tailings at the Storage Facility of the Chirano Gold Mine Limited, Ghana was investigated. Plant species were sampled in five plots, each 32 m 2. Samples of ...

Hyperaccumulator plants and the need for a database. Hyperaccumulators are unusual plants that accumulate particular metals or metalloids in their living tissues to levels that may be hundreds or …

@article{Du2023ExploringTA, title={Exploring the accumulation capacity of dominant plants based on soil heavy metals forms and assessing heavy metals contamination characteristics near gold tailings ponds.}, author={Yanbin Du and Zhijun Tian and Yunfeng Zhao and Xinrong Wang and Zizhen Ma and Caihong Yu}, journal={Journal …

Analysis of total Au content (Fig. 1S) showed gold accumulation in all radish parts (roots, leaves, peels, and flesh), in some potato parts (roots, stems, and leaves), and to lesser extents in carrot and lettuce.All samples exhibiting accumulation were subjected to the optimized alkaline digestion procedure followed by sp-ICP-MS …

As a result, inducing excessive gold accumulation in plants by dissolving gold with various chemical reagents can achieve gold phytomining. In 1998, plants that accumulated more than 1 μg·g −1 were defined as gold hyperaccumulator plants (Brooks 1998). To achieve the economic feasibility of gold phytomining, the concentration of gold ...

Accumulation of heavy metals in autochthonous plants around Bagega Artisanal Gold Mining Village and the remediation potential of selected plants March 2023 DOI: 10.1016/j.chnaes.2023.02.005

On the other hand, C. piauhyensis shows remarkable aluminium accumulation in plant biomass (83.8%) compared to the other tested plants. The ability of these plants to accumulate the studied metals and survive throughout the experiment demonstrates the potential of these plants to remediate metal enriched water especially for mine drainage …

Prices: $200 (crosses), $300 (diamonds), $400 (squares), $500 (triangles). Inset, thiocyanate-induced uptake of gold by Brassica juncea from a 5 μg per g finely …

Abstract This review deals with the influence of gold nanoparticles on physiological processes (responses) in higher plants. Gold nanoparticles can affect a lot of processes in the plant organism, including growth rate, parameters of water exchange, activity of the photosynthetic apparatus and the antioxidant system, and expression of …

The removal of metals from metaliferous soil by living plants is termed phytoextraction. The technology can be used for remedial purpose (phytoremediation), or potentially for economic profit (phytomining or phyto-reclamation). Gold has been suggested as a likely candidate for phytomining. Plants do not normally accumulate …

The focal point of this report is a bibliography of 133 references and an associated topic index - both of which could be useful to geochemists attempting to locate new Au deposits. Fifty of these references originated in the Soviet Union, where most of the initial work on biogeochemical exploration for Au had been done. The 15 topics in the index range from …

Heavy metals in plants vary with the plant species (Mganga et al., 2011; Nkansah and Belford, 2017), and their accumulations depend on the climatic conditions and soil characteristics (Ogundiran ...

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Although none of these species can be classified as gold hyperaccumulators (with gold concentrations ≥1 mg/kg), their ability to thrive on challenging environments …

Global numbers of hyperaccumulator plants. As can be seen in Table 1, in July 2017 the database contains 721 hyperaccumulator species (523 nickel, 53 copper, 42 cobalt, one chromium, 42 manganese, 20 zinc, two rare earth elements, 41 selenium, two thallium, seven cadmium, five arsenic, and eight lead) with some species showing …

Phytomining of gold involves extracting gold from soil substrates by harvesting specially selected hyperaccumulating plants. Phytomining has potential to …

Lead (Pb) shares about 10% of total pollution produced by heavy metals. The uptake of lead by the primary producers (plants) is found to affect their metabolic functions, growth, and photosynthetic activity. The accumulation of lead in excess can cause up to a 42% reduction in the growth of the roots. The current review addresses the global ...

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