Microbial systems as a source of novel genes for enhanced phytoremediation of contaminated soils

Srivastava, Sonal; Anand, Vandana; Singh, Pallavi; Roy, Aditi; Pallavi, Sushree; Bist, Vidisha; Kaur, Jasvinder; Srivastava, Subhi; Katiyar, Ratna; Srivastava, Suchi

doi:10.1016/b978-0-12-821199-1.00016-x

Cited by 14 publications

(4 citation statements)

References 153 publications

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“…Having the ability to breakdown PAHs within urine, provides Sphingomonas and Acinetobacter a competitive advantage and ability to maintain dominance [41]. Furthermore, the organisms which were found to be overly abundant in BCa urine across all cohorts include Enterobacter, and Ralstonia, all also known PAHs metabolizers [42]. The microbiota of the bladder cancer population may be a re ection of PAH exposure from smoking, environmental pollutants and ingestion [43] and not a direct causation by disease.…”

Section: Hurst Et Almentioning

confidence: 98%

Global Meta-Analysis of Urine Microbiome: Colonization of PAH-degrading bacteria among bladder cancer patients

Bukavina

Isali

Ginwala

et al. 2022

Preprint

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Background The application of next generation sequencing techniques has enabled characterization of urinary tract microbiome. Although many studies have demonstrated associations between the human microbiome and bladder cancer, they have not always reported consistent results, thereby necessitating cross-study comparisons. Thus, the fundamental questions remain how we can utilize this knowledge. The aim of our study was to examine for disease-associated changes in urine microbiome communities globally utilizing machine learning algorithm. The results were further validated using our own prospectively collected urine of bladder cancer patients. Results Our study included 129 bladder cancer urine samples, and 60 healthy controls across four different countries. At a meta-analysis false discovery rate (FDR) of 0.01, we identified a total of 97/548 genera to be differentially abundant in the BCa microbiome compared to healthy patients. Overall, while the differences in diversity metrics were clustered around the country of origin (Kruskal Wallis, P < 0.001), collection methodology was a driver of microbiome composition. When assessing dataset from the China, Hungary and Croatia, ML data demonstrated no discrimination capacity to distinguish between BCa and healthy (AUC 0.577). However, inclusion of samples with catheterized urine only improved the diagnostic accuracy of prediction for BCa to AUC 0.995, with precision recall AUC = 0.994. Through elimination of contaminants associated with collection methodology among all cohorts, our study identified increased abundance of polycyclic aromatic hydrocarbon (PAHs) degrading bacteria Sphingomonas, Acinetobacter, Micrococcus, and Ralstonia consistently present in BCa patients. Conclusions The microbiota of the bladder cancer population may be a reflection of PAH exposure from smoking, environmental pollutants and ingestion. Presence of PAHs in urine of bladder cancer patients may allow for a unique metabolic niche, and provide necessary metabolic resources where other bacteria are not able to flourish. Furthermore, we found that while compositional differences associated with geography more than disease, many are driven by collection methodology.

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Section: Hurst Et Almentioning

confidence: 98%

Global Meta-Analysis of Urine Microbiome: Colonization of PAH-degrading bacteria among bladder cancer patients

Bukavina

Isali

Ginwala

et al. 2022

Preprint

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“…The plants are harvested along with the roots once the roots have become saturated with the contaminant [ 88 ]. PTEs such as lead, cadmium, cobalt, copper, uranium, and arsenic can be effectively removed using this technique but cannot be effectively removed using conventional methods [ 89 ].…”

Section: Eco-technological/green Approachmentioning

confidence: 99%

Phytoremediation of Potentially Toxic Elements: Role, Status and Concerns

Wani

Ahmad

Asgher

et al. 2023

Plants

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Environmental contamination with a myriad of potentially toxic elements (PTEs) is triggered by various natural and anthropogenic activities. However, the industrial revolution has increased the intensity of these hazardous elements and their concentration in the environment, which, in turn, could provoke potential ecological risks. Additionally, most PTEs pose a considerable nuisance to human beings and affect soil, aquatic organisms, and even nematodes and microbes. This comprehensive review aims to: (i) introduce potentially toxic elements; (ii) overview the major sources of PTEs in the major environmental compartments; (iii) briefly highlight the major impacts of PTEs on humans, plants, aquatic life, and the health of soil; (iv) appraise the major methods for tackling PTE-caused pollution; (v) discuss the concept and applications of the major eco-technological/green approaches (comprising phytoextraction, rhizofiltration, phytostabilization, phytovolatilization, and phytorestoration); (vi) highlight the role of microbes in phytoremediation under PTE stress; and (vii) enlighten the major role of genetic engineering in advancing the phytoremediation of varied PTEs. Overall, appropriate strategies must be developed in order to stop gene flow into wild species, and biosafety issues must be properly addressed. Additionally, consistent efforts should be undertaken to tackle the major issues (e.g., risk estimation, understanding, acceptance and feasibility) in order to guarantee the successful implementation of phytoremediation programs, raise awareness of this green technology among laymen, and to strengthen networking among scientists, stakeholders, industrialists, governments and non-government organizations.

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“…Plant roots are used in the process of absorbing or adsorbing contaminants from water and aqueous waste streams. Rhizofiltration is a technology used to accomplish this goal [10]. When plant roots absorb and store soil contaminants, they help to prevent environmental pollution such as heavy metal leaching into groundwater and the spread of polluted dust due to wind erosion, both of which are harmful to the environment.…”

Section: Biological Processes Are Employed In the Process Of Phytoremediationmentioning

confidence: 99%

The Use of Plants, Nanotechnology and Surfactants in Lindane Remediation: A Mini Review

Uba

Baba

2021

J Biochem Microbiol Biotechnol

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Lindane is an organochlorine chemical and an isomer of hexachlorocyclohexane that has been used both as an agricultural insecticide and as a pharmaceutical treatment for lice and scabies. Lindane accumulates in the agricultural soil and plants thereby causing environmental and health deteriorative effects. A lot of soil remediation methods used are highly expensive and require a lot of expertise. Phytoremediation (rhizofiltration, phytostabilization), which involve the use of the plant to stabilize or remove environmental toxicants is presently much in use because of its cost-effectiveness and ecological friendliness. Adsorption has emerged as the most efficient, easy, and promising nanotechnology method of wastewater treatment out of the several approaches now employed. Recently, biosurfactants are used for the production of nanoparticles which will be further applied in the area of pesticide remediation. The use of phytoremediation is the most important fully green approach as no new chemicals are added to the polluted soil. Other emerging technologies where phytoremediation might not be applicable especially groundwater has begun to evaluate the use of green nanobiotechnology.

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Microbial systems as a source of novel genes for enhanced phytoremediation of contaminated soils

Cited by 14 publications

References 153 publications

Global Meta-Analysis of Urine Microbiome: Colonization of PAH-degrading bacteria among bladder cancer patients

Global Meta-Analysis of Urine Microbiome: Colonization of PAH-degrading bacteria among bladder cancer patients

Phytoremediation of Potentially Toxic Elements: Role, Status and Concerns

The Use of Plants, Nanotechnology and Surfactants in Lindane Remediation: A Mini Review

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