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| 1 | Effect of arsenic on tolerance mechanisms of two plant growth-promoting bacteria used as biological inoculants显示文摘Bacterial ability to colonize the rhizosphere of plants in arsenic(As) contaminated soils is highly important for symbiotic and free-living plant growth-promoting rhizobacteria(PGPR)used as inoculants, since they can contribute to enhance plant As tolerance and limit metalloid uptake by plants. The aim of this work was to study the effect of As on growth,exopolysaccharide(EPS) production, biofilm formation and motility of two strains used as soybean inoculants, Bradyrhizobium japonicum E109 and Azospirillum brasilense Az39. The metabolism of arsenate(As(V)) and arsenite(As(III)) and their removal and/or possible accumulation were also evaluated. The behavior of both bacteria under As treatment was compared and discussed in relation to their potential for colonizing plant rhizosphere with high content of the metalloid. B. japonicum E109 growth was reduced with As(III)concentration from 10 μM while A. brasilense Az39 showed a reduction of growth with As(III) from 500 μM. EPS and biofilm production increased significantly under 25 μM As(III)for both strains. Moreover, this was more notorious for Azospirillum under 500 μM As(III),where motility was seriously affected. Both bacterial strains showed a similar ability to reduce As(V). However, Azospirillum was able to oxidize more As(III)(around 53%) than Bradyrhizobium(17%). In addition, both strains accumulated As in cell biomass. The behavior of Azospirillum under As treatments suggests that this strain would be able to colonize efficiently As contaminated soils. In this way, inoculation with A. brasilense Az39 would positively contribute to promoting growth of different plant species under As treatment. | Ana L.Armendariz Melina A.Talano Ana L.Wevar Oller María I.Medina Elizabeth Agostini | 2015 | Journal of Environmental Sciences2015，27，7： | 3 |
| 2 | Evaluation of phenol detoxification by Brassica napus hairy roots, using Allium cepa test显示文摘 | Paola S. González Guillermo A. Maglione Micaela Giordana Cintia E. Paisio Melina A. Talano Elizabeth Agostini | 2012 | Environmental Science and Pollution Research2012，，2： | 1 |
| 3 | Phenol tolerance, changes of antioxidative enzymes and cellular damage in transgenic tobacco hairy roots colonized by arbuscular mycorrhizal fungi显示文摘 | Sabrina G. Ibá?ez María I. Medina Elizabeth Agostini | 2011 | Chemosphere2011，，5： | 1 |
| 4 | Scale up of 2,4-dichlorophenol removal from aqueous solutions using Brassica napus hairy roots显示文摘 | Vanina A. Angelini Joaquín Orejas María I. Medina Elizabeth Agostini | 2010 | Journal of Hazardous Materials2010，，1： | 1 |
| 5 | Toxicity of phenol solutions treated with rapeseed and tomato hairy roots显示文摘 | Cintia Elizabeth Paisio Paola Solange González Alejandra Gerbaudo Mabel Lucía Bertuzzi Elizabeth Agostini | 2010 | Desalination2010，，1： | 1 |
| 6 | Removal of 2,4-diclorophenol from aqueous solutions using tobacco hairy root cultures显示文摘 | Melina A. Talano Silvina Frontera Paola González María I. Medina Elizabeth Agostini | 2009 | Journal of Hazardous Materials2009，，1： | 1 |
| 7 | Application of Brassica napus hairy root cultures for phenol removal from aqueous solutions显示文摘 | María S. Coniglio Victor D. Busto Paola S. González María I. Medina Silvia Milrad Elizabeth Agostini | 2008 | Chemosphere2008，，7： | 1 |
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