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| Registros recuperados: 53 | |
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| Sánchez Viveros, Gabriela. |
| Esta investigación evaluó algunos mecanismos de tolerancia del simbiosistema Azolla-Anabaena azollae ante agua contaminada con arsénico (As+5) y/o cobre (Cu2+). Para lo anterior, se plantearon seis fases experimentales: 1) identificar molecularmente a nivel de especie a diez colectas de Azolla, 2) evaluar la capacidad de acumulación de As+5 y los efectos tóxicos del metaloide en el simbiosistema Azolla-Anabaena azollae, 3) determinar la influencia del As+5 en la concentración de nueve elementos en las frondas de Azolla filiculoides, 4) evaluar el efecto del Cu2+ sobre la actividad fotosintética y permeabilidad de la membrana de Azolla filiculoides y Azolla caroliniana, 5) comparar la capacidad de acumulación de Cu2+ en dos especies de Azolla y, 6) conocer... |
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Palavras-chave: Contaminación; Fitorremediación; Helechos; Metales pesados; Metaloides; Contamination; Ferns; Heavy metals; Metalloids; Phytoremediation; Edafología; Doctorado. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/632 |
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| Tijerina Castro, Guillermo Daniel. |
| La degradación del suelo causada por la gran diversidad de contaminantes tóxicos orgánicos e inorgánicos está causando un deterioro que reduce la producción y calidad de alimentos; la fitorremediación es una tecnología para revertir estos daños. Al caracterizar 223 aislamientos bacterianos (velocidad de crecimiento, tamaño, producción de pigmentos, patogenicidad y efecto en la germinación), colectados en muestras de suelo y de raíz en nueve sitios del predio del Colegio de Postgraduados, Montecillo México, se encontró que 51.6% de los aislamientos fueron de muestras de suelo y 41.8% de raíz, en cuanto a velocidad de crecimiento se encontró que 31.8% fueron de crecimiento rápido, 37.6% intermedio y el 30.5% de crecimiento lento, por tamaño de la colonia... |
| Tipo: Tesis |
Palavras-chave: Fitorremediación; Patogenicidad; Bacillus; Fluorescentes; Acumulación; Maestría; Genética; Phytoremediation; Pathogenic effect; Fluorescent; Accumulation. |
| Ano: 2008 |
URL: http://hdl.handle.net/10521/1655 |
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| Kogbara,Reginald B. |
| A combination of experimental cells consisting of some agro-technical methods aimed at accelerating the biodegradation of petroleum contaminated soils were evaluated in order to ascertain the relevance of these methods and the relative attention due necessary soil environmental parameters. The methods of treatment involved the variation of tilling, watering and nutrient application, plus biopile and phytoremediation treatments. In the experiments described, petroleum contamination of soils was simulated under field conditions, the remedial treatments were then utilized for clean up. Analysis of soil parameters after a six-week study period showed an increase in total heterotrophic bacteria (THB) counts across all the treatments, with THB counts increasing... |
| Tipo: Journal article |
Palavras-chave: Bioremediation methods; Performance index; Phytoremediation; Total hydrocarbon content. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582008000100011 |
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| Marchand, L.; Nsanganwimana, F.; Lamy, Jean-baptiste; Quintela-sabaris, C.; Gonnelli, C.; Colzi, I.; Fletcher, T.; Oustriere, N.; Kolbas, A.; Kidd, P.; Bordas, F.; Newell, P.; Alvarenga, P.; Deletic, A.; Mench, M.. |
| Intra-specific variability of root biomass production (RP) of six rooted macrophytes, i.e. Juncus effusus, Phragmites australis, Schoenoplectus lacustris, Typha latifolia, Phalaris arundinacea, and Iris pseudacorus grown from clones, in response to Cu exposure was investigated. Root biomass production varied widely for all these macrophytes in control conditions (0.08 μM) according to the sampling site. Root biomass production of T. latifolia and I. pseudacorus in the 2.5–25 μM Cu range depended on the sampling location but not on the Cu dose in the growth medium. For P. australis, J. effusus, S. lacustris, and P. arundinacea, an intra-specific variability of RP depending on both the sampling location and the Cu-dose was evidenced. This intra-specific... |
| Tipo: Text |
Palavras-chave: Copper tolerance; Phytoremediation; Root biomass; Trace element; Wetland. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00201/31183/29869.pdf |
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| Ben Chekroun,K; Moumen,A; Rezzoum,N; Sánchez,E; Baghour,M. |
| The Aquatic system contamination by organic pollutants and heavy metals is one of the most serious problems that might face the environment and organisms as a whole. Interestingly, the accumulation of these pollutants is due to the anthropogenic activity, namely the intensive use of fertilizers to obtain high yields in crop production. In this paper, we compared the levels of chlorophylls, proteins, dry weight and sucrose in some red (Alsidium sp. and Gracilaria sp.) and green algae (Ulva sp.) collected from Mohandis, near Kariat and Bou Areg. Our results indicate that the algae collected nearby Bou Areg, an area well-known for its high agricultural activity, contained high levels of pigments, proteins and sugars. From the chlorophyll results, we conclude... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Algae; Biomonitoring; Carbohydrates; Nador lagoon; Phytoremediation; Pigments; Pollution; Proteins. |
| Ano: 2013 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572013000100005 |
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| ALVES,C.; GALON,L.; KAIZER,R.R.; WINTER,F.L.; HOLZ,C.M.; NONEMACHER,F.; SANTIN,C.O.. |
| ABSTRACT: The use of plant species for the phytoremediation of soils contaminated with herbicides is an alternative that has been emphasized to minimize the effects of the persistence of agrochemicals in the environment. The objective of this study was to evaluate the tolerance potential of winter species in soils contaminated with sulfentrazone and fomesafen. The experiment was in a completely randomized design with four replications. Doses of fomesafen (0.0, 0.125, 0.250, and 0.5 kg ha-1) and sulfentrazone (0.0, 0.3, 0.6 and 1.2 kg ha-1) were applied during the pre-emergence of phytoremediate species (black oat, vetch, birdsfood trefoil, radish and lupin). Forty five days after the emergence of the species, the phytotoxicity (%), leaf area (cm2), stalk... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sulfentrazone; Fomesafen; Phytoremediation; Lupineus albus. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100289 |
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| Procópio,S.O.; Santos,J.B.; Pires,F.R.; Silva,A.A.; Santos,E.A.; Cargnelutti Filho,A.. |
| Phytoremediation, the use of plants to decontaminate soils and water resources from organic pollutants such as herbicides, is economically and environmentally a promising technique applied in many areas, including agriculture. The objective of this work was to evaluate the development of bean plants cultivated in the field, in soil with different levels of trifloxysulfuron-sodium contamination, following cultivation of two green manure species, as well as to evaluate the possibility of recontamination of the area by such herbicide with the straw permanence on the soil. The experiment was carried out in Coimbra, MG, Brazil, on a sandy clayey Red - Yellow Argisol from March to November 2003. Four levels of soil contamination with trifloxysulfuron-sodium... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris; Phytoremediation; Carryover; Green manures. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582007000100010 |
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| CABRAL,C.M.; SANTOS,J.B.; FERREIRA,E.A.; COSTA,S.S.D.; DALVI,V.C.; FRANCINO,D.M.T.. |
| ABSTRACT Herbicide clomazone is highly soluble in water, which increases the risk of leaching, resulting in contamination of sources of groundwater and waterways, affecting non-target organisms, with possible degradation of riparian areas. The objective of this work was to investigate the possible anatomical modifications of the leaf tissue of twelve arborescent species native to Brazil grown in soil contaminated by clomazone, in order to microscopically characterize leaf damage caused by the herbicide, and investigate whether the structural damage precedes visible damage. Through micro morphometrics, the thickness and the area occupied by the tissues were measured in a cross section of the leaves of the forest species: adaxial and abaxial epidermis,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Inga marginata; Handroanthus serratifolius; Forest species; Phytoremediation; Leaf anatomy. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100230 |
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| Opeolu, B.O.; Bamgbose, O.; Arowolo, T.A.; Kadiri, S.J.. |
| Previous studies have shown that some vegetables have the ability to absorb metals from soil. Since they are early maturity species, they possess the potential to be used as phytoremediating agents. Also, synthetic chelates have been found to induce lead desorption from soil matrix, thereby enhancing uptake into plant tissues. Therefore, a study was carried out to determine the potential of Amaranthus cruentus as a soil lead remediating plant. The experiment was carried out using a randomized block design. Soil samples were subjected to five levels of lead contamination namely control, 600ppm, 600ppm + EDTA, 1800ppm and 1800ppm + EDTA, each treatment had five replicates. Three plants each were carefully transplanted from nursery to experimental pots and... |
| Tipo: Report |
Palavras-chave: Amaranthus cruentus; Lead; Phytoremediation; Soil; Land Economics/Use. |
| Ano: 2005 |
URL: http://purl.umn.edu/54398 |
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| Angle, J. Scott; Linacre, Nicholas A.. |
| Phytoremediation is the use of living plants, known as hyperaccumulators which absorb unusually large amounts of metals in comparison to other plants. The use of classical plant breeding and new molecular techniques offers great potential to develop crops with the ability to clean up polluted sites. While these technologies have gained widespread attention, prior to commercial development, there are risks that must be considered – only a few of which have received even modest examination. Therefore, the focus of this working paper is to explore specific risks associated with phytoremediation and suggest ways in which these risks can be managed so that new, novel, and innovative plant technologies may be applied to provide low cost and efficient... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Risk; GMO; Biotechnology; Phytoremediation; Phytoextraction; Phytomining; Environmental risk; Crop Production/Industries; Q16; Q2. |
| Ano: 2005 |
URL: http://purl.umn.edu/59225 |
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| Melo,Roseli Freire; Dias,Luiz Eduardo; Assis,Igor Rodrigues de. |
| ABSTRACT Persistent areas of tailings and deposits from coal and gold mining may present high levels of arsenic (As), mainly in the arsenate form, endangering the environment and human health. The establishment of vegetation cover is a key step to reclaiming these environments. Thus, this study aimed to evaluate the potential of Eucalyptus urophylla and E. citriodora seedlings for use in phytoremediation programs of arsenate-contaminated areas. Soil samples were incubated at increasing rates (0, 50, 100, 200 and 400 mg dm-3) of arsenic (arsenate form, using Na2HAsO4) for 15 days. The seedlings were produced in a substrate (vermiculite + sawdust) and were transplanted to the pots with soil three months after seed germination. The values of plant height and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytoremediation; Phytotoxicity; Revegetation. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100516 |
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| Dias,Luiz Eduardo; Melo,Roseli Freire; Mello,Jaime Wilson Vargas de; Oliveira,Juraci Alves; Daniels,Walter Lee. |
| Phytoremediation strategies utilize plants to decontaminate or immobilize soil pollutants. Among soil pollutants, metalloid As is considered a primary concern as a toxic element to organisms. Arsenic concentrations in the soil result from anthropogenic activities such as: the use of pesticides (herbicides and fungicides); some fertilizers; Au, Pb, Cu and Ni mining; Fe and steel production; coal combustion; and as a bi-product during natural gas extraction. This study evaluated the potential of pigeon pea (Cajanus cajan), wand riverhemp (Sesbania virgata), and lead tree (Leucaena leucocephala) as phytoremediators of soils polluted by As. Soil samples were placed in plastic pots, incubated with different As doses (0; 50; 100 and 200 mg dm-3) and then sown... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Remediation; Decontamination; Phytoremediation; Phytostabilization. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000300039 |
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| Melo,Roseli Freire; Dias,Luiz Eduardo; Mello,Jaime Wilson Vargas de; Oliveira,Juraci Alves. |
| Arsenic has been considered the most poisonous inorganic soil pollutant to living creatures. For this reason, the interest in phytoremediation species has been increasing in the last years. Particularly for the State of Minas Gerais, where areas of former mining activities are prone to the occurrence of acid drainage, the demand is great for suitable species to be used in the revegetation and "cleaning" of As-polluted areas. This study was carried out to evaluate the potential of seedlings of Eucalyptus grandis (Hill) Maiden and E. cloeziana F. Muell, for phytoremediation of As-polluted soils. Soil samples were incubated for a period of 15 days with different As (Na2HAsO4) doses (0, 50, 100, 200, and 400 mg dm-3). After 30 days of exposure the basal leaves... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytoremediation; Arsenate; Phytotoxicity. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000300040 |
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| Ferreira,Paulo Ademar Avelar; Ceretta,Carlos Alberto; Tiecher,Tales; Facco,Daniela Basso; Garlet,Luana Paula; Soares,Cláudio Roberto Fonsêca Sousa; Soriani,Hilda Hildebrand; Nicoloso,Fernando Teixeira; Giachini,Admir José; Brunetto,Gustavo; Cornejo,Pablo. |
| ABSTRACT Crotalaria juncea is used as plant cover in grape vineyards in Brazil, which usually present soils with high copper (Cu) levels due to the application of Cu-based phyto-sanitary products. Under this condition an increase growth and cover of C. juncea is needed to improve the phytoremediation processes in those soils. Some alternatives to achieve this condition is the inoculation with arbuscular mycorrhizal fungi (AMF), which has demonstrated an important increase of plant growth in Cu-contaminated soils at different soil P levels. The aims of this study were to evaluate the effect of AMF inoculation in soils with high Cu contents on the growth of C. juncea, the acid phosphatase (APase) enzyme activity in plants and soil, and the presence of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytoremediation; Leguminous; FMA; Vineyards. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100526 |
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| Cipriani,Henrique Nery; Dias,Luiz Eduardo; Costa,Maurício Dutra; Campos,Naiara Viana; Azevedo,Aristéa Alves; Gomes,Roberto Junio; Fialho,Izabela Ferreira; Amezquita,Sandra Patrícia Montealegre. |
| Acacia mangium and Mimosa caesalpiniaefolia are fast-growing woody fabaceous species that might be suitable for phytoremediation of arsenic (As)-contaminated sites. To date, few studies on their tolerance to As toxicity have been published. Therefore, this study assessed As toxicity symptoms in A. mangium and M. caesalpiniaefolia seedlings under As stress in a greenhouse. Seedlings of Acacia mangium and M. caesalpiniaefolia were grown for 120 d in an Oxisol-sand mixture with 0, 50, 100, 200, and 400 mg kg-1 As, in four replications in four randomized blocks. The plants were assessed for visible toxicity symptoms, dry matter production, shoot/root ratio, root anatomy and As uptake. Analyses of variance and regression showed that the growth of A. mangium and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arsenate; Heavy metals; Phytoremediation; Root anatomy; Soil contamination. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000500031 |
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| Nascimento,Silvânia Maria de Souza Gomes; Souza,Adailson Pereira de; Lima,Vera Lúcia Antunes de; Nascimento,Clístenes Williams Araújo do; Nascimento,Joab Josemar Vitor Ribeiro do. |
| ABSTRACT: High growth rate is one of the criteria used for the selection of species to be used in metal phytoextraction programs. This study was carried out to characterize the growth characteristics of sunflower (Helianthus annuus L.), castor bean (Ricinus communis L.), corn (Zea mays L), and vetiver [Vetiveria zizanioides (L.) Nash] grown on a soil contaminated with lead (Pb), with and without pH correction, to improve agronomic practices regarding phytoremediation programs. The experiment was designed as a randomized block with four replications; treatments were arranged in a split-plot arrangement, with the main plot representing the species (sunflower, castor bean, corn, and vetiver), with or without pH correction and soil fertilization, and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytoremediation; Soil pollution; Heavy metal; Biological indicator. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100547 |
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| Silva,Rodrigo F. da; Ros,Clovis O. Da; Scheid,Douglas L.; Grolli,André L.; Marco,Rudinei De; Missio,Evandro L.. |
| ABSTRACTHigh concentrations of copper (Cu) may be toxic to plants, yet some species can be tolerant to soils contaminated by this metal. The study aimed to evaluate Cu translocation and tolerance in seedlings of ‘timbaúva’ (Enterolobium contortisiliquum (Vell.) Morong), ‘pata-de-vaca’ (Bauhinia forficata Link) and ‘amendoim-bravo’ (Pterogyne nitensTul) subjected to Cu-contaminated soil. The study was conducted in a greenhouse for 120 days, using as substrate a clayey Oxisol. The experiment was set in a completely randomized design, using a 3 x 6 factorial scheme, corresponding to three forest species (‘timbaúva’, ‘pata-de-vaca’ and ‘amendoim-bravo’) and six Cu doses in the soil (0, 60, 120, 180, 240 and 300 mg kg-1), with six replicates. The following... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Heavy metal; Phytoremediation; Reforestation; Soil cover. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015001101093 |
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| Registros recuperados: 53 | |
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