Rhizoremediation of pentachlorophenol by Sphingobium chlorophenolicum ATCC 39723

Dams, Rosemeri Inês; Paton, Graeme I.; Killham, K.

doi:10.1016/j.chemosphere.2007.02.014

Cited by 83 publications

(32 citation statements)

References 41 publications

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“…These results agree with several studies (He et al 2005;Dams et al 2007;He et al 2009), which have demonstrated that PCP degradation in soil planted with ryegrass depended on the proximity of the roots to the contaminated soil. He et al (2005) attributed this effect to interactions of PCP with root exudates and the soil microbial community.…”

Section: Pcp Removalsupporting

confidence: 83%

“…In this respect, only the root growth in the rhizotron with 250 mg kg -1 did not reach section 3, with the root growth being inhibited by PCP concentration; consequently, there was less removal of PCP (Table 1). These results are consistent with the study performed by Dams et al (2007), where it was demonstrated that root length of Triticum aestivum was affected by 100 mg kg -1 of PCP compared to the root length for plants in the absence of PCP. Therefore, our study suggests that PCP concentrations greater than 100 mg kg -1 inhibit root growth of Lolium multiflorum generated a reduced removal of PCP due to decreased root growth.…”

Section: Pcp Removalsupporting

confidence: 82%

“…However, significant differences were obtained between the control sample and treatments with 100 and 250 mg L -1 . The same effect was found in studies performed by Dams et al (2007) with Triticum aestivum, demonstrating that a PCP concentration of 100 mg kg -1 decreased plant growth.…”

Section: Effect Of Pcp Concentration On Plant Biomass Of Lolium Multisupporting

confidence: 69%

“…The composition and concentration of them can vary depending on plant species (Zheng and Zhang 2000;He et al 2005). Plant roots also improve the adsorption of pollutants in the soil, increasing their bioavailability, thereby generating several changes in the soil (Dams et al 2007). These changes can be detected by measuring microbialorigin enzymes as they provide an indication of quality changes in contaminated soils.…”

Section: Introductionmentioning

confidence: 99%

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Removal of pentachlorophenol in a rhizotron system with ryegrass (Lolium multiflorum)

Urrutia

Rubilar

Parede

et al. 2013

J. Soil Sci. Plant Nutr.

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Degradation of pentachlorophenol (PCP) in the rhizosphere of Lolium multiflorum (ryegrass) was studied in an Andisol of southern Chile. A rhizotron system was designed to evaluate the effect of different PCP concentrations (50, 100 and 250 mg kg -1 ) on plant biomass, organic acid exudation, dehydrogenase and the β-glucosidase activity of L. multiflorum. Moreover, the microbial biomass was estimated using a molecular technique in different sections of rhizotrons. More than 96% of PCP was removed in the rhizotron system by adsorption in the soil and degradation by the rhizosphere of L. multiflorum. The plant biomass decreased when the PCP concentration was increased in the soil, the biomass for the treatment with 250 mg kg -1 being significantly lower. The estimation of the microbial biomass and β-glucosidase activity in the soil was not affected when the PCP concentration was increased, indicating a low toxicity of the contaminant due to its lesser availability. However, the dehydrogenase activity decreased when increasing the PCP concentration, showing negative effects on microorganisms. The organic acid exudates varied during the incubation time, influenced by the stress of the different treatments and the distribution of roots. Therefore, Lolium multiflorum is a promising candidate for designing field scale phytoremediation processes.

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Section: Pcp Removalsupporting

confidence: 83%

Section: Pcp Removalsupporting

confidence: 82%

Section: Effect Of Pcp Concentration On Plant Biomass Of Lolium Multisupporting

confidence: 69%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Removal of pentachlorophenol in a rhizotron system with ryegrass (Lolium multiflorum)

Urrutia

Rubilar

Parede

et al. 2013

J. Soil Sci. Plant Nutr.

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“…Different researchers have reported PCP degrading microorganisms from the natural environment. Several bacterial strains such as Arthrobacter, Pseudomonas, Sphingobium chlorophenolicum, S. marcescens capable of PCP degradation have been reported [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Isolation and Growth Characteristics of Chromium(VI) and Pentachlorophenol Tolerant Bacterial Isolate from Treated Tannery Effluent for its Possible Use in Simultaneous Bioremediation

et al. 2011

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The bacterial strains resistant to pentachlorophenol (PCP) and hexavalent chromium [Cr(VI)] were isolated from treated tannery effluent of a common effluent treatment plant. Most of the physico-chemical parameters analyzed were above permissible limits. Thirty-eight and four bacterial isolates, respectively were found resistant to [50 lg/ml concentration of [Cr(VI)] and the same level of PCP. Out of the above 42 isolates, only one was found simultaneously tolerant to higher levels of both PCP (500 lg/ml) and Cr(VI) (200 lg/ml), and hence was selected for further studies. To the best of our knowledge, this is the first report in which a native bacterial isolate simultaneously tolerant to such a high concentrations of Cr(VI) and PCP has been reported. The culture growth was best at 0.4% (w/v) glucose as an additional carbon source and 0.2% (w/v) ammonium chloride as a nitrogen source. The growth results with cow urine as a nitrogen source were comparable with the best nitrogen source ammonium chloride. The isolate exhibited resistance to multiple heavy metals (Pb, As, Hg, Zn, Co & Ni) and to antibiotics nalidixic acid and polymixin-B. The efficacy of bacterial isolate for growth, PCP degradation (56.5%) and Cr(VI) bioremediation (74.5%) was best at 48 h incubation. The isolate was identified as Bacillus sp. by morphological and biochemical tests. The 16S rDNA sequence analysis revealed 98% homology with Bacillus cereus. However, further molecular analysis is underway to ascertain its likelyhood of a novel species.

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Microbe‐Assisted Phytoremediation of Petroleum Impacted Soil

Gerhardt

Gerwing

Huang

et al. 2014

Handbook of Oil Spill Science and Technology

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Rhizoremediation of pentachlorophenol by Sphingobium chlorophenolicum ATCC 39723

Cited by 83 publications

References 41 publications

Removal of pentachlorophenol in a rhizotron system with ryegrass (Lolium multiflorum)

Removal of pentachlorophenol in a rhizotron system with ryegrass (Lolium multiflorum)

Isolation and Growth Characteristics of Chromium(VI) and Pentachlorophenol Tolerant Bacterial Isolate from Treated Tannery Effluent for its Possible Use in Simultaneous Bioremediation

Microbe‐Assisted Phytoremediation of Petroleum Impacted Soil

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