Bacterial endophyte‐mediated naphthalene phytoprotection and phytoremediation
TLDR
The construction of a naphthalene-degrading endophytic strain designated Pseudomonas putida VM1441(pNAH7) was found to be an efficient colonizer of plants, colonizing both the rhizosphere and interior root tissues and resulted in the protection of the host plant from the phytotoxic effects of nAPHthalene.Abstract:
Polyaromatic hydrocarbons (PAHs) are major and recalcitrant pollutants of the environment and their removal presents a significant problem. Phytoremediation has shown much promise in PAH removal from contaminated soil, but may be inhibited because the plant experiences phytotoxic effects from low-molecular-weight PAHs such as naphthalene. This paper describes the construction of a naphthalene-degrading endophytic strain designated Pseudomonas putida VM1441(pNAH7). This strain was found to be an efficient colonizer of plants, colonizing both the rhizosphere and interior root tissues. The inoculation of plants with P. putida VM1441(pNAH7) resulted in the protection of the host plant from the phytotoxic effects of naphthalene. When inoculated plants were exposed to naphthalene, both seed germination and plant transpiration rates were higher than those of the uninoculated controls. The inoculation of plants with this strain also facilitated higher (40%) naphthalene degradation rates compared with uninoculated plants in artificially contaminated soil.read more
Citations
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Journal ArticleDOI
Using soil bacteria to facilitate phytoremediation.
TL;DR: An overview of bacterially assisted phytoremediation is provided here for both organic and metallic contaminants, with the intent of providing some insight into how these bacteria aid phytorenmediation so that future field studies might be facilitated.
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Plant-bacteria partnerships for the remediation of hydrocarbon contaminated soils.
TL;DR: A better understanding of plant-bacteria partnerships could be exploited to enhance the remediation of hydrocarbon contaminated soils in conjunction with sustainable production of non-food crops for biomass and biofuel production.
Journal ArticleDOI
Endophytic bacteria: prospects and applications for the phytoremediation of organic pollutants.
TL;DR: A better knowledge of plant-endophyte interactions could be utilized to increase the remediation of polluted soil environments and to protect the foodstuff by decreasing agrochemical residues in food crops.
Journal ArticleDOI
Endophytes and their role in phytoremediation
TL;DR: The diversity of contaminant-resistant/degrading endophytes and their role in phytoremediation is reviewed and some issues that have been raised surrounding this area of research are discussed.
Journal ArticleDOI
Plant-associated bacterial degradation of toxic organic compounds in soil.
TL;DR: Endophytic and rhizospheric bacterial degradation of toxic organic compounds (either naturally occurring or genetically enhanced) in contaminated soil in the environment could have positive implications for human health worldwide and is the subject of this review.
References
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Phytoremediation and rhizoremediation of organic soil contaminants : Potential and challenges
TL;DR: If phytoremediation is to become an effective and viable remedial strategy, there is a need to mitigate plant stress in contaminated soils, and there is also aneed to establish reliable monitoring methods and evaluation criteria for remediation in the field.
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Engineered endophytic bacteria improve phytoremediation of water-soluble, volatile, organic pollutants
Tanja Barac,Safiyh Taghavi,Safiyh Taghavi,Brigitte Borremans,Ann Provoost,Licy Oeyen,Jan V. Colpaert,Jaco Vangronsveld,Daniel van der Lelie,Daniel van der Lelie +9 more
TL;DR: It is demonstrated that endophytic bacteria equipped with the appropriate degradation pathway improve the in planta degradation of toluene, resulting in a marked decrease in its phytotoxicity, and a 50–70% reduction of its evapotranspiration through the leaves.
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A multi-process phytoremediation system for removal of polycyclic aromatic hydrocarbons from contaminated soils.
TL;DR: The use of plant species that have the ability to proliferate in the presence of high levels of contaminants and strains of PGPR that increase plant tolerance to contaminants and accelerate plant growth in heavily contaminated soils resulted in rapid and massive biomass accumulation of plant tissue in contaminated soil.
Journal ArticleDOI
PAHs in background soils from western Europe : influence of atmospheric deposition and soil organic matter.
TL;DR: Observations support the hypothesis that TOC plays an important role in the retention ofPAHs in soil and that PAHs are often combined with BC during combustion emissions.
Journal ArticleDOI
Bacterial endophyte‐enhanced phytoremediation of the organochlorine herbicide 2,4‐dichlorophenoxyacetic acid
Kieran J. Germaine,Xuemei Liu,Guiomar Garcia Cabellos,Jill Hogan,David Ryan,David N. Dowling +5 more
TL;DR: The inoculation of a model plant, the pea, with a genetically tagged bacterial endophyte that naturally possesses the ability to degrade 2,4-dichlorophenoxyacetic acid demonstrates the usefulness ofacterial endophytes to enhance the phytoremediation of herbicide-contaminated substrates and reduce levels of toxic herbicide residues in crop plants.