EVALUATION OF METAL ACCUMULATION IN THE FORAGE GRASS Brachiaria decumbens Stapf GROWN IN CONTAMINATED SOILS WITH IRON TAILINGS

2021 ◽  
Author(s):  
Daniela Arcanjo Paiola Ferreira ◽  
Lucas Mardones Gaião ◽  
Alessandra Rodrigues Kozovits ◽  
Maria Cristina Teixeira Braga Messias
Keyword(s):  
Contaminated Soils ◽  
Metal Accumulation ◽  
Forage Grass ◽  
Brachiaria Decumbens

Metal Accumulation and Vanadium-Induced Multidrug Resistance by Environmental Isolates of Escherichia hermannii andEnterobacter cloacae

1998 ◽  
Vol 64 (11) ◽  
pp. 4317-4320 ◽  
Author(s):  
Alicia Hernández ◽  
Rafael P. Mellado ◽  
José L. Martínez
Keyword(s):  
Multidrug Resistance ◽  
Outer Membrane ◽  
Contaminated Soils ◽  
Metal Accumulation ◽  
Enterobacter Cloacae ◽  
Oil Refinery ◽  
The Other ◽  
Clinical Isolates ◽  
Environmental Isolates ◽  
The Family

ABSTRACT Contaminated soils from an oil refinery were screened for the presence of microorganisms capable of accumulating either nickel, vanadium, or both metals. Three strains of bacteria that belonged to the family Enterobacteriaceae were selected. Two of them were Escherichia hermannii strains, and outer membrane profile (OMP) analysis showed that they were similar to a strain of clinical origin; the other one was an Enterobacter cloacaestrain that differed from clinical isolates. The selected bacteria accumulated both nickel and vanadium. Growth in the presence of vanadium induced multidrug resistance phenotypes in E. hermannii and E. cloacae. Incubation with this metal changed the OMP profile of E. hermannii but did not produce variations in the expression of the major OMPs of E. cloacae.

scholarly journals Heavy metal accumulation in tomato and cabbage grown in some industrially contaminated soils of Bangladesh

2019 ◽  
Vol 17 (3) ◽  
pp. 288-294
Author(s):  
Md Akhter Hossain Chowdhury ◽  
Tanzin Chowdhury ◽  
Md Arifur Rahman
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Contaminated Soils ◽  
Metal Accumulation ◽  
Living System ◽  
Heavy Metal Accumulation ◽  
World Health ◽  
Agricultural Field ◽  
Allowable Limit ◽  
Metal Contents

Heavy metal accumulation in environmental compartments is a potential risk to the living system because of their uptake by plants and subsequent introduction into the food chain. A study was carried out to investigate the heavy metal contents in industrially contaminated soils collected from six different locations of Dhaka and Mymensingh districts and their effects on two important vegetables namely tomato and cabbage. Pot experiment was conducted using contaminated soils at the net house of Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh following completely randomized design (CRD) with three replicates. The higher level of heavy metal contents was found in the soil samples of Hajaribag and Dhaka Export Processing Zone (DEPZ). The highest Ni, Cd, Cr, Cu and Fe contents were 59.45, 18.79, 67.57, 40.81 and 1619.61 µg g−1 which were much above the recommended level except Cu contents. The highest yield of vegetables was obtained grown in Maskanda soil of Mymensingh district and the lowest from DEPZ soil of Dhaka. The highest Ni, Cr and Fe contents were 8.91, 7.22, 419.65 µg g−1, respectively in tomato fruits grown in the soil of Hajaribag whereas the highest Cu content (3.38 µg g−1) was obtained from Seedstore soil, Mymensingh and highest Cd content (2.88 µg g−1) was from Mitford ghat soil, Dhaka. In cabbage, the highest Ni (17.52 µg g−1) and Fe (411.25 µg g−1) contents were found in the soils of DEPZ whereas the highest Cr (9.17 µg g−1), Cd (3.52 µg g−1) and Cu (8.51 µg g−1) were obtained in the plants grown in the soils of Hajaribag, Mitford ghat and Maskanda, respectively. Concentrations of all the tested heavy metals except Cu in both vegetables were above the maximum allowable limit prescribed by the World Health Organization. Among the metals, the accumulation of Ni was found as higher amount (0.39 and 0.71 for tomato and cabbage, respectively) based on plant concentration factor or transfer factor. The results showed a positive correlation between concentration of the metals present in soils and in vegetables and the highest correlation was found with Cr in tomato and Fe in cabbage. However, both the soils and grown vegetables were consistently observed to pose a risk to human health. So, it can be recommended that government should take necessary action so that heavy metals used in the industries cannot come into the nearby agricultural field to ensure food safety as well as food security. J Bangladesh Agril Univ 17(3): 288–294, 2019

Phyto-Availability of Potentially Toxic Metals in Curcubita ficifolia Grown on Contaminated and Non-Contaminated Soils

2016 ◽  
Vol 59 ◽  
pp. 38-47
Author(s):  
Conrad K. Enenebeaku ◽  
Chidozie N. Anyanwu ◽  
Nnaemeka J. Okorocha ◽  
Uchechi E. Enenebeaku ◽  
Emmanuel Nzediegwu ◽  
...  
Keyword(s):  
Sequential Extraction ◽  
Soil Sample ◽  
Metal Concentration ◽  
Contaminated Soil ◽  
Contaminated Soils ◽  
Metal Accumulation ◽  
Soil Samples ◽  
Potentially Toxic Metals ◽  
Tissue Concentrations ◽  
Before And After

In order to estimate plant available fraction of metals in two soil samples-contaminated soil (A) and non-contaminated soil (B), a vegetable crop,Curcubita ficifoliawas grown on both soil samples. The matured leaf was harvested and analyzed for its metal concentration after three (3) months of growth. The soil samples were collected before and after planting, digested with acid and analyzed to determine the pseudo total metal concentration and quantification was done using atomic absorption spectroscopy (AAS). To correlate metal accumulation by the vegetable with potential bioavailability of metals in soils, sequential extraction (SE) using the modified BCR technique was performed on the soils. Soil sample B was used for quality control. It was observed that each metal differed considerably in uptake. And theC. ficifoliacultivated on soil sample A had tissue concentrations of Zn, Mn and Cu as follows: 39.6mgkg-1, 18.3mgkg-1and 26.3mgkg-1respectively. Also,C. ficifoliacultivated on soil sample B had a lower absorption of Zn, Mn and Cu with concentrations of 10.21mgkg-1, 9.11mgkg-1, and 7.6mgkg-1respectively. Results of sequential extraction showed that Zn for soil sample A, and Fe for sample B were mostly present in the acid exchangeable and reducible fractions where these metals were mostly taken up.

scholarly journals Transcription Profiling of the Metal-hyperaccumulator Thlaspi caerulescens (J. & C. PRESL)

2005 ◽  
Vol 60 (3-4) ◽  
pp. 216-223 ◽  
Author(s):  
Markus Plessl ◽  
Diana Rigola ◽  
Viivi Hassinen ◽  
Mark G. M. Aarts ◽  
Henk Schat ◽  
...  
Keyword(s):  
Contaminated Soils ◽  
Large Scale ◽  
Metal Accumulation ◽  
Thlaspi Caerulescens ◽  
Soil Types ◽  
Transcription Profiling ◽  
Large Scale Analysis ◽  
Zinc Cadmium ◽  
Metalliferous Soil ◽  
Brassicaceae Family

Abstract Thlaspi caerulescens is a well-studied metal-hyperaccumulator of zinc, cadmium and nickel, belonging to the Brassicaceae family. Moreover it is one of the few hyperaccumulators that occur on different metalliferous soil types, as well as on nonmetalliferous soils. We are interested in the development of systems to improve phytoremediation of metal contaminated soils through improved metal-accumulation. About 1900 cDNAs isolated from T. caerulescens roots were hybridized with reverse transcribed RNA from zinc-treated T. caerulescens plants of two accessions originating from two different soil types. This comparative transcript profiling of T. caerulescens plants resulted in the identification of genes that are affected by heavy metals. The developed microarray proved to be an appropriate tool for a large scale analysis of gene expression in this metal-accumulator species.

scholarly journals Remediation potential of early successional pioneer species Chenopodium album and Tripleurospermum inodorum

2019 ◽  
Vol 36 ◽  
pp. 47-69 ◽  
Author(s):  
Dávid Tőzsér ◽  
Béla Tóthmérész ◽  
Sándor Harangi ◽  
Edina Baranyai ◽  
Gyula Lakatos ◽  
...  
Keyword(s):  
Contaminated Soils ◽  
Bioconcentration Factor ◽  
Metal Accumulation ◽  
Chenopodium Album ◽  
Translocation Factor ◽  
Soil Disturbance ◽  
Weed Species ◽  
Metal Concentrations ◽  
Plant Organs ◽  
Accumulation Of Metals

Remediation with plants is a technology used to decrease soil or water contamination. In this study we assessed the remediation potential of two weed species (Chenopodium album and Tripleurospermum inodorum) in a moderately metal-contaminated area. Metal concentrations were studied in roots, stems and leaves, in order to assess correlations in metal concentrations between those in soil and plants. Furthermore, we calculated bioaccumulation factor (BAF), bioconcentration factor (BCF) and translocation factor (TF) values to study the accumulation of metals from soil to plants and translocation within plants. We found correlation in metal concentrations between soil and plants. The metal accumulation potential was low in both species, indicating low BAF and BCF values. In contrast, high TF values were found for Mn, Ni, Sr, Zn, Ba, Fe, Cu and Pb in C. album, and for Fe, Mn, Ni, Zn and Sr in T. inodorum. Our results demonstrated that the potential of C. album and T. inodorum might be limited in phytoextraction processes; however, when accumulated, metals are successfully transported to aboveground plant organs. Thus, to achieve the efficient remediation of metal-contaminated soils, removal of the aboveground plant organs is recommended, by which soil disturbance can also be avoided.

scholarly journals Potential of grasses and rhizosphere bacteria for bioremediation of diesel-contaminated soils

2011 ◽  
Vol 35 (6) ◽  
pp. 2227-2236 ◽  
Author(s):  
Melissa Paola Mezzari ◽  
Daniela Mara Hoffmann Zimermann ◽  
Henry Xavier Corseuil ◽  
Alexandre Verzani Nogueira
Keyword(s):  
Contaminated Soils ◽  
Dry Weight ◽  
Diesel Oil ◽  
Paspalum Notatum ◽  
Grass Species ◽  
Positive Interactions ◽  
Brachiaria Decumbens ◽  
Bacteria Growth ◽  
Environmental Accidents ◽  
Degrading Bacteria

The techniques available for the remediation of environmental accidents involving petroleum hydrocarbons are generally high-cost solutions. A cheaper, practical and ecologically relevant alternative is the association of plants with microorganisms that contribute to the degradation and removal of hydrocarbons from the soil. The growth of three tropical grass species (Brachiaria brizantha, Brachiaria decumbens and Paspalum notatum) and the survival of root-associated bacterial communities was evaluated at different diesel oil concentrations. Seeds of three grass species were germinated in greenhouse and at different doses of diesel (0, 2.5, 5 and 10 g kg-1 soil). Plants were grown for 10 weeks with periodic assessment of germination, growth (fresh and dry weight), height, and number of bacteria in the soil (pots with or without plants). Growth and biomass of B. decumbens and P. notatum declined significantly when planted in diesel-oil contaminated soils. The presence of diesel fuel did not affect the growth of B. brizantha, which was highly tolerant to this pollutant. Bacterial growth was significant (p < 0.05) and the increase was directly proportional to the diesel dose. Bacteria growth in diesel-contaminated soils was stimulated up to 5-fold by the presence of grasses, demonstrating the positive interactions between rhizosphere and hydrocarbon-degrading bacteria in the remediation of diesel-contaminated soils.

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