Rhizoremediation prospects of Polyaromatic hydrocarbon degrading rhizobacteria, that facilitate glutathione and glutathione-S-transferase mediated stress response, and enhance growth of rice plants in pyrene contaminated soil

Singha, L. Paikhomba; Sinha, Nidul; Pandey, Piyush

doi:10.1016/j.ecoenv.2018.08.069

Cited by 39 publications

(18 citation statements)

References 59 publications

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“…Plants growth under stress such as PHCs contamination is expected to be lower than it would be under optimal conditions [30]. However, exploiting the potential of plant growth-promoting rhizobacteria (PGPR) in phytoremediation of PHC-contaminated soils holds great promise as it has recently been demonstrated [31][32][33]. PGPR are soil microbes within the rhizomicrobiome with phenotypes that benefit plant growth [28].…”

Section: Introductionmentioning

confidence: 99%

Salix purpurea and Eleocharis obtusa Rhizospheres Harbor a Diverse Rhizospheric Bacterial Community Characterized by Hydrocarbons Degradation Potentials and Plant Growth-Promoting Properties

Alotaibi

Lee

St‐Arnaud

et al. 2021

Plants

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Phytoremediation, a method of phytomanagement using the plant holobiont to clean up polluted soils, is particularly effective for degrading organic pollutants. However, the respective contributions of host plants and their associated microbiota within the holobiont to the efficiency of phytoremediation is poorly understood. The identification of plant-associated bacteria capable of efficiently utilizing these compounds as a carbon source while stimulating plant-growth is a keystone for phytomanagement engineering. In this study, we sampled the rhizosphere and the surrounding bulk soil of Salixpurpurea and Eleocharis obusta from the site of a former petrochemical plant in Varennes, QC, Canada. Our objectives were to: (i) isolate and identify indigenous bacteria inhabiting these biotopes; (ii) assess the ability of isolated bacteria to utilize alkanes and polycyclic aromatic hydrocarbons (PAHS) as the sole carbon source, and (iii) determine the plant growth-promoting (PGP) potential of the isolates using five key traits. A total of 438 morphologically different bacterial isolates were obtained, purified, preserved and identified through PCR and 16S rRNA gene sequencing. Identified isolates represent 62 genera. Approximately, 32% of bacterial isolates were able to utilize all five different hydrocarbons compounds. Additionally, 5% of tested isolates belonging to genera Pseudomonas, Acinetobacter, Serratia, Klebsiella, Microbacterium, Bacillus and Stenotrophomonas possessed all five of the tested PGP functional traits. This culture collection of diverse, petroleum-hydrocarbon degrading bacteria, with multiple PGP traits, represents a valuable resource for future use in environmental bio- and phyto-technology applications.

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Section: Introductionmentioning

confidence: 99%

Salix purpurea and Eleocharis obtusa Rhizospheres Harbor a Diverse Rhizospheric Bacterial Community Characterized by Hydrocarbons Degradation Potentials and Plant Growth-Promoting Properties

Alotaibi

Lee

St‐Arnaud

et al. 2021

Plants

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“…10.1). This is exemplified in the work undertaken by Singha et al (2018) who observed that rice stress response under the influence of pyrene was modulated by PGPB. Inoculation of rice with PGPB promoted not only the growth of rice (i.e., shoot and root length) but also improved rice antioxidant activity enhancing the levels of glutathione, glutathione-S-transferase, and superoxide dismutase activities.…”

Section: The Role Of Bacteria To Assist Plants In Hydrocarbon-contami...mentioning

confidence: 89%

Plant-Microbiome Interactions in Hydrocarbon-Contaminated Soils

Agnello

Morelli

Panno

2020

Plant Microbe Symbiosis

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The use of green remediation technologies (i.e., phytoremediation, bioremediation, mycoremediation) for the restoration of hydrocarbon-contaminated sites is one of the keys for sustainable development. These technologies rely on the joint action of biotic components of the ecosystem, namely, plants, bacteria, and fungi. Despite the fact that previous studies showed that the clean-up of hydrocarbons could be achieved individually by plants or microorganisms, present investigations suggest that the interaction of plants with their surrounding microbiome determines the outcomes of green remediation technologies. This book chapter reviews the state of the art to explain the two-way relationship established between plants and their associated microbiome in hydrocarbon-polluted soils. Special focus is put on stressing the results obtained in recent studies that employ omics approaches.

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“…However, many bacteria can fix N 2 to NH 4 + through biological nitrogen fixation. Several nitrogen-fixing bacteria were isolated from organic pollutant-contaminated sites and were proven to promote the growth of legumes in contaminated soils. ,− In addition to providing suitable habitats for organisms involved in nitrogen cycling within the biochar, it can also influence functional genes at a distance of several millimeters from the particles themselves. In this way, a “functional asymmetry” can be created, for example, with bacterial amoA becoming more dominant as the distance between biochar and bulk soil is reduced .…”

Section: Biochar-based Pgpb: Key Considerations For Phytoremediationmentioning

confidence: 99%

“…PGPB with pollutant-degrading activities can be especially useful for revitalizing organic pollutant-contaminated soils . Many bacterial species in genera such as Rhizobium , Klebsiella , Pseudomonas , Acinetobacter and Alcaligenes , and Bacillus are known to improve plant growth and health and enable plants to withstand and remediate environmental pollutants.…”

Section: Pgpb-assisted Phytoremediation Of Organic Pollutantsmentioning

confidence: 99%

Integrating Biochar, Bacteria, and Plants for Sustainable Remediation of Soils Contaminated with Organic Pollutants

Xiang

Harindintwali

Wang

et al. 2022

Environ. Sci. Technol.

191

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The contamination of soil with organic pollutants has been accelerated by agricultural and industrial development and poses a major threat to global ecosystems and human health. Various chemical and physical techniques have been developed to remediate soils contaminated with organic pollutants, but challenges related to cost, efficacy, and toxic byproducts often limit their sustainability. Fortunately, phytoremediation, achieved through the use of plants and associated microbiomes, has shown great promise for tackling environmental pollution; this technology has been tested both in the laboratory and in the field. Plant–microbe interactions further promote the efficacy of phytoremediation, with plant growth-promoting bacteria (PGPB) often used to assist the remediation of organic pollutants. However, the efficiency of microbe-assisted phytoremediation can be impeded by (i) high concentrations of secondary toxins, (ii) the absence of a suitable sink for these toxins, (iii) nutrient limitations, (iv) the lack of continued release of microbial inocula, and (v) the lack of shelter or porous habitats for planktonic organisms. In this regard, biochar affords unparalleled positive attributes that make it a suitable bacterial carrier and soil health enhancer. We propose that several barriers can be overcome by integrating plants, PGPB, and biochar for the remediation of organic pollutants in soil. Here, we explore the mechanisms by which biochar and PGPB can assist plants in the remediation of organic pollutants in soils, and thereby improve soil health. We analyze the cost-effectiveness, feasibility, life cycle, and practicality of this integration for sustainable restoration and management of soil.

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Rhizoremediation prospects of Polyaromatic hydrocarbon degrading rhizobacteria, that facilitate glutathione and glutathione-S-transferase mediated stress response, and enhance growth of rice plants in pyrene contaminated soil

Cited by 39 publications

References 59 publications

Salix purpurea and Eleocharis obtusa Rhizospheres Harbor a Diverse Rhizospheric Bacterial Community Characterized by Hydrocarbons Degradation Potentials and Plant Growth-Promoting Properties

Salix purpurea and Eleocharis obtusa Rhizospheres Harbor a Diverse Rhizospheric Bacterial Community Characterized by Hydrocarbons Degradation Potentials and Plant Growth-Promoting Properties

Plant-Microbiome Interactions in Hydrocarbon-Contaminated Soils

Integrating Biochar, Bacteria, and Plants for Sustainable Remediation of Soils Contaminated with Organic Pollutants

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