Bioremediation of heavy metals by growing hyperaccumulaor endophytic bacterium Bacillus sp. L14

Guo, Hanjun; Luo, Shenglian; Chen, Liang; Xiao, Xiao; Xi, Qiang; Wei, Wanzhi; Zeng, Guangming; Liu, Chengbin; Wan, Yong; Chen, Jueliang; He, Yejuan

doi:10.1016/j.biortech.2010.06.085

Cited by 339 publications

(135 citation statements)

References 31 publications

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“…The result differed from a previous report, in which the removal of heavy metals was primarily attributed to the cell surface [23]. Guo et al [33] reported similar results, noting that the majority of the removal and transformation of Cd (II) and Pb (II) ions by EB L14 occurred in the membrane fraction. Sar [34] also reported that 88% of Ni 2+ was restricted to the periplasm and cell membrane by Pseudomonas aeruginosa in combination with phosphoryl groups.…”

Section: Cell Compartmentalizationcontrasting

confidence: 84%

Cobalt(II) bioaccumulation and distribution in Rhodopseudomonas palustris

Gao

Wang

Zhang

et al. 2017

Biotechnology & Biotechnological Equipment

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Bioaccumulation by growing cells is a potential technique for the removal of heavy metals from wastewater. Cobalt bioaccumulation by Rhodopseudomonas palustris via different metabolic pathways was investigated for various pH levels, temperatures, co-cations and initial Co 2+ concentrations. The distribution of cobalt and its chemical nature in R. palustris were examined by cell compartmentalization and X-ray diffraction analysis. Our results indicated that biomass and bioaccumulation capacity were superior under aerobic conditions in the dark at pH 6.5 and 30 C. Cobalt removal efficiency and bioaccumulation capacity were, respectively, 84. 9% and 287.18 . Cobalt was distributed between the cell surface, periplasmic space, membrane and cytoplasm. The periplasmic space and membrane accounted for 57.37% and 27.95% of Co 2+ uptake, respectively. X-ray diffraction analysis showed that cobalt ions were predominantly deposited in the cell as cobalt phosphate octahydrate. These results demonstrate that R. palustris could be used to remove cobalt from industrial wastewater; it would therefore be beneficial to further study the mechanism of cobalt bioaccumulation in this organism.

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Section: Cell Compartmentalizationcontrasting

confidence: 84%

Cobalt(II) bioaccumulation and distribution in Rhodopseudomonas palustris

Gao

Wang

Zhang

et al. 2017

Biotechnology & Biotechnological Equipment

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“…Heavy metals significantly impact soil bacterial community due to their toxic effect. To transform pollutants into less toxic substances or immobilization in order to reduce their bioavailability, bioremediation by microorganisms is frequently used (Guo et al 2010). In several countries e.g.…”

Section: Resultsmentioning

confidence: 99%

“…This process use microbes to transform pollutants in environment into less toxic substances or immobilization in order to reduce their bioavailability. Bioremediation gained more attention recently to clean up the polluted environment and ensures a safe and economical alternative to commonly used physicochemical methods (Guo et al 2010). The activity of microorganisms may lead to adsorption and precipitation of potentially toxic elements by biosorption or bioaccumulation, but also to increase their solubility or formation of volatile compounds with mechanisms such as biovolatilization or bioleaching (Boriová et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Zinc bioaccumulation by microbial consortium isolated from nickel smelter sludge disposal site

Kvasnová¹,

Hamarová²,

Pristaš³

2017

Nova Biotechnologica Et Chimica

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Heavy metal pollution is one of the most important environmental issues of today. Bioremediation by microorganisms is one of technologies extensively used for pollution treatment. In this study, we investigated the heavy metal resistance and zinc bioaccumulation by microbial consortium isolated from nickel sludge disposal site near Sereď (Slovakia). The composition of consortium was analyzed based on MALDI-TOF MS of cultivable bacteria and we have shown that the consortium was dominated by bacteria of genus Arthrobacter. While consortium showed very good growth in the zinc presence, it was able to remove only 15 % of zinc from liquid media. Selected members of consortia have shown lower growth rates in the zinc presence but selected isolates have shown much higher bioaccumulation abilities compared to whole consortium (up to 90 % of zinc removal for NH1 strain). Bioremediation is frequently accelerated through injection of native microbiota into a contaminated area. Based on data obtained in this study, we can conclude that careful selection of native microbiota could lead to the identification of bacteria with increased bioaccumulation abilities.

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“…The integrative effort may prove to be one of the best environmental practices for the reclamation of degraded lands. Guo et al (2010) isolated a multi-metal-resistant endophytic bacterium L14 (EB L14) from the cadmium hyperaccumulator Solanum nigrum L. The excellent adaptation abilities and promising remediation efficiencies strongly indicated the superiority of this endophyte in heavy metals [Cd(II), Pb(II) and Cu(II)] bioremediation at the initial concentration of 10 mg/l with excellent adaptation abilities and promising remediation efficiency for heavy metals bioremediation, which could be useful for developing efficient metal removal systems. Composted olive husk using Beta maritima L. as an indicator species (de la Fuente et al 2011) and humic substances using Helianthus annuus L. (Jadia and Fulekar 2008;Mani et al 2012b) have been proven to be an appropriate material for the development of bioremediation strategies on a metal-polluted soil.…”

Section: Application Of Bioremediationmentioning

confidence: 99%

“…1 An overview of biotechnological approaches for phytoremediation (modified from Dhankher et al 2011) conceptually realized that phytotechnologies must include economics (Marques et al 2009;Guo et al 2010). Dominguez et al (2008) and Robinson et al (2009) have extended the phytoremediation concept to more applied and integrated tool to manage restoration works at large scale using plants for hydraulic control along with limitation of metal uptake.…”

Section: Challenges and Opportunities In Phytoremediationmentioning

confidence: 99%

Biotechnological advances in bioremediation of heavy metals contaminated ecosystems: an overview with special reference to phytoremediation

Mani

Kumar

2013

Int. J. Environ. Sci. Technol.

500

137

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The ability of heavy metals bioaccumulation to cause toxicity in biological systems-human, animals, microorganisms and plants-is an important issue for environmental health and safety. Recent biotechnological approaches for bioremediation include biomineralization (mineral synthesis by living organisms or biomaterials), biosorption (dead microbial and renewable agricultural biomass), phytostabilization (immobilization in plant roots), hyperaccumulation (exceptional metal concentration in plant shoots), dendroremediation (growing trees in polluted soils), biostimulation (stimulating living microbial population), rhizoremediation (plant and microbe), mycoremediation (stimulating living fungi/mycelial ultrafiltration), cyanoremediation (stimulating algal mass for remediation) and genoremediation (stimulating gene for remediation process). The adequate restoration of the environment requires cooperation, integration and assimilation of such biotechnological advances along with traditional and ethical wisdom to unravel the mystery of nature in the emerging field of bioremediation. This review highlights better understanding of the problems associated with the toxicity of heavy metals to the contaminated ecosystems and their viable, sustainable and eco-friendly bioremediation technologies, especially the mechanisms of phytoremediation of heavy metals along with some case studies in India and abroad. However, the challenges (biosafety assessment and genetic pollution) involved in adopting the new initiatives for cleaning-up the heavy metals-contaminated ecosystems from both ecological and greener point of view must not be ignored.

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Bioremediation of heavy metals by growing hyperaccumulaor endophytic bacterium Bacillus sp. L14

Cited by 339 publications

References 31 publications

Cobalt(II) bioaccumulation and distribution in Rhodopseudomonas palustris

Cobalt(II) bioaccumulation and distribution in Rhodopseudomonas palustris

Zinc bioaccumulation by microbial consortium isolated from nickel smelter sludge disposal site

Biotechnological advances in bioremediation of heavy metals contaminated ecosystems: an overview with special reference to phytoremediation

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