Rhizobacteria: Restoration of Heavy Metal-Contaminated Soils

Tekaya, S. Ben; Tipayno, Sherlyn; Kim, Kiyoon; Subramanian, Parthiban; Sa, Tongmin

doi:10.1007/978-1-4614-8600-8_11

Cited by 4 publications

(2 citation statements)

References 135 publications

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“…This change in the microbial community was also putatively related to changes in biocide use in aviation fuel. Blastococcus has shown very high resistance to metals [61].…”

Section: Discussionmentioning

confidence: 99%

Aesthetic Alteration of Marble Surfaces Caused by Biofilm Formation: Effects of Chemical Cleaning

et al. 2020

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Despite the massive presence of biofilms causing aesthetic alteration to the façade of the Monza Cathedral, our team in a previous work proved that the biocolonization was not a primary damaging factor if compared to chemical-physical deterioration due to the impact of air pollution. Nonetheless, the conservators tried to remove the sessile dwelling microorganisms to reduce discolouration. In this research, two nearby sculpted leaves made of Candoglia marble were selected to study the effects of a chemical treatment combining the biocides benzalkonium chloride, hydrogen peroxide and Algophase® and mechanical cleaning procedures. One leaf was cleaned with the biocides and mechanically, and the other was left untreated as control. The impact of the treatment was investigated after 1 month from the cleaning by digital microscopy, environmental scanning electron microscopy, confocal microscopy and molecular methods to determine the composition and the functional profiles of the bacterial communities. Despite the acceptable aesthetic results obtained, the overall cleaning treatment was only partially effective in removing the biofilm from the colonized surfaces and, therefore, not adequately suitable for the specific substrate. Furthermore, the cleaning process selected microorganisms potentially more resistant to biocides so that the efficacy of future re-treatment by antimicrobial agents could be negatively affected.

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“…This change in the microbial community was also putatively related to changes in biocide use in aviation fuel. Blastococcus has shown very high resistance to metals [61].…”

Section: Discussionmentioning

confidence: 99%

Aesthetic Alteration of Marble Surfaces Caused by Biofilm Formation: Effects of Chemical Cleaning

et al. 2020

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“…For example, some PGPR can interact with the soil's toxic metals by binding them to their cell surfaces or incorporating them in some metabolic functions after captivation. Some microorganisms can reduce metal ions such as Hg 2+ and Ag + to Hg 0 and Ag 0 and provide a perfect model for total metal removal from the soil [63]. It has been experimentally demonstrated that some rhizobacteria produce extracellular enzymes such as peroxidases, reductases, Cytochome P 450 , lacases and glutathione-S-transferase, having important roles in polycyclic aromatic hydrocarbon degradation, molecules present in crude oil and known for their toxicity and carcinogenicity [64].…”

Section: Plant Growth-promoting Rhizobacteria a Potential Approach Fo...mentioning

confidence: 99%

Bacteria in Soil: Promising Bioremediation Agents in Arid and Semi-Arid Environments for Cereal Growth Enhancement

et al. 2022

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In arid regions, starchy agricultural products such as wheat and rice provide essential carbohydrates, minerals, fibers and vitamins. However, drought, desiccation, high salinity, potentially toxic metals and hydrocarbon accumulation are among the most notable stresses affecting soil quality and cereal production in arid environments. Certain soil bacteria, referred to as Plant Growth-Promoting Rhizobacteria (PGPR), colonize the plant root environment, providing beneficial advantages for both soil and plants. Beyond their ability to improve plant growth under non-stressed conditions, PGPR can establish symbiotic and non-symbiotic interactions with plants growing under stress conditions, participating in soil bioremediation, stress alleviation and plant growth restoration. Moreover, the PGPR ability to fix nitrogen, to solubilize insoluble forms of nutrients and to produce other metabolites such as siderophores, phytohormones, antibiotics and hydrolytic enzymes makes them ecofriendly alternatives to the excessive use of unsuitable and cost-effective chemicals in agriculture. The most remarkable PGPR belong to the genera Arthrobacter, Azospirillum, Azotobacter, Bacillus, Enterobacter, Klebsiella, Pseudomonas, etc. Therefore, high cereal production in arid environments can be ensured using PGPR. Herein, the potential role of such bacteria in promoting wheat and rice production under both normal and derelict soils is reviewed and highlighted.

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Natural resources as cancer-treating material

Kaswan

2023

South African Journal of Botany

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Rhizobacteria: Restoration of Heavy Metal-Contaminated Soils

Cited by 4 publications

References 135 publications

Aesthetic Alteration of Marble Surfaces Caused by Biofilm Formation: Effects of Chemical Cleaning

Aesthetic Alteration of Marble Surfaces Caused by Biofilm Formation: Effects of Chemical Cleaning

Bacteria in Soil: Promising Bioremediation Agents in Arid and Semi-Arid Environments for Cereal Growth Enhancement

Natural resources as cancer-treating material

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