Microbial diversity and bioremediation of rhizospheric soils from Trindade Island - Brazil

Camacho-Montealegre, Celia Marcela; Rodrigues, Edmo Montes; Tótola, Marcos Rogério

doi:10.1016/j.jenvman.2019.02.013

Cited by 14 publications

(8 citation statements)

References 45 publications

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“…The present study proved that the negative response of cocksfoot to petrol diminished over time, which proves the progressing microbiological degradation of petrol hydrocarbons with time. Camacho-Montealegre et al [ 42 ] demonstrated that, under favourable conditions, from 66% to 75% of hydrocarbons contained in petroleum products can be mineralized within 60 days depending on the species used for phytoremediation. In our study, cocksfoot proved effective in petrol degradation, and this effect was mainly due to its stimulating impact on soil microorganisms.…”

Section: Discussionmentioning

confidence: 99%

“…The microbiological degradation of petroleum hydrocarbons in the soil is a natural process, owing to which organic pollutants can be mineralized by autochthonous microorganisms [ 41 , 84 ]. The cultivation of cocksfoot enhanced their activities as a result of the stimulating effect of root secretions on their development [ 42 , 60 ].…”

Section: Discussionmentioning

confidence: 99%

“…Both the soil microorganisms and the enzymes they produce are sensitive to varying environmental conditions [ 41 , 42 , 43 , 44 ]. They faithfully reproduce the condition of the soil environment; therefore, the microbiological and biochemical indicators cannot be neglected in soil quality evaluation [ 6 , 13 , 30 , 45 ].…”

Section: Introductionmentioning

confidence: 99%

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Microbiological Study in Petrol-Spiked Soil

2021

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The pollution of arable lands and water with petroleum-derived products is still a valid problem, mainly due the extensive works aimed to improve their production technology to reduce fuel consumption and protect engines. An example of the upgraded fuels is the BP 98 unleaded petrol with Active technology. A pot experiment was carried out in which Eutric Cambisol soil was polluted with petrol to determine its effect on the microbiological and biochemical properties of this soil. Analyses were carried out to determine soil microbiome composition—with the incubation and metagenomic methods, the activity of seven enzymes, and cocksfoot effect on hydrocarbon degradation. The following indices were determined: colony development index (CD); ecophysiological diversity index (EP); index of cocksfoot effect on soil microorganisms and enzymes (IFG); index of petrol effect on soil microorganisms and enzymes (IFP); index of the resistance of microorganisms, enzymes, and cocksfoot to soil pollution with petrol (RS); Shannon–Weaver’s index of bacterial taxa diversity (H); and Shannon–Weaver’s index of hydrocarbon degradation (IDH). The soil pollution with petrol was found to increase population numbers of bacteria and fungi, and Protebacteria phylum abundance as well as to decrease the abundance of Actinobacteria and Acidobacteria phyla. The cultivation of cocksfoot on the petrol-polluted soil had an especially beneficial effect mainly on the bacteria belonging to the Ramlibacter, Pseudoxanthomonas, Mycoplana, and Sphingobium genera. The least susceptible to the soil pollution with petrol and cocksfoot cultivation were the bacteria of the following genera: Kaistobacter, Rhodoplanes, Bacillus, Streptomyces, Paenibacillus, Phenylobacterium, and Terracoccus. Cocksfoot proved effective in the phytoremediation of petrol-polluted soil, as it accelerated hydrocarbon degradation and increased the genetic diversity of bacteria. It additionally enhanced the activities of soil enzymes.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Microbiological Study in Petrol-Spiked Soil

2021

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“…Accumulate more than 1000 mg As kg −1 in DW tissue, Max accumulation Cd 5931 µ g/g DW. 3500 µ g/g DW Cr [79,80] Biodiversity is a point that needs to be explored in water phytoremediation systems, since diversity may infer different metabolic pathways, resistance and mobilization of HM characteristics in plants [81][82][83]. Since there are several diseases associated with these pollutants, and each of them may vary in its bioavailability and chemical structure, different mechanisms and plants have to be used to remove these pollutants.…”

Section: Wolffia Globosamentioning

confidence: 99%

Advances and Applications of Water Phytoremediation: A Potential Biotechnological Approach for the Treatment of Heavy Metals from Contaminated Water

Delgado-González

Madariaga-Navarrete

Fernández-Cortés

et al. 2021

IJERPH

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Potable and good-quality drinking water availability is a serious global concern, since several pollution sources significantly contribute to low water quality. Amongst these pollution sources, several are releasing an array of hazardous agents into various environmental and water matrices. Unfortunately, there are not very many ecologically friendly systems available to treat the contaminated environment exclusively. Consequently, heavy metal water contamination leads to many diseases in humans, such as cardiopulmonary diseases and cytotoxicity, among others. To solve this problem, there are a plethora of emerging technologies that play an important role in defining treatment strategies. Phytoremediation, the usage of plants to remove contaminants, is a technology that has been widely used to remediate pollution in soils, with particular reference to toxic elements. Thus, hydroponic systems coupled with bioremediation for the removal of water contaminants have shown great relevance. In this review, we addressed several studies that support the development of phytoremediation systems in water. We cover the importance of applied science and environmental engineering to generate sustainable strategies to improve water quality. In this context, the phytoremediation capabilities of different plant species and possible obstacles that phytoremediation systems may encounter are discussed with suitable examples by comparing different mechanistic processes. According to the presented data, there are a wide range of plant species with water phytoremediation potential that need to be studied from a multidisciplinary perspective to make water phytoremediation a viable method.

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“…Therefore, their detoxification or removal is obligatory for protecting both the terrestrial and marine environments. A number of physical and chemical methods have been used for the elimination of these contaminants, but these conventional approaches have proved less effective, more troublesome and economically challenging as compared to the biological means of remediation (Theriot and Grunden, 2011; Tayabali et al., 2017; Camacho-Montealegre et al., 2019). Bioremediation is a promising technology for cleaning the sites polluted with pesticides and other lethal contaminants (Kumar, 2011; Zhang et al., 2017; Huang et al., 2018).…”

Section: Introductionmentioning

confidence: 99%

Immobilized cells of a novel bacterium increased the degradation of N-methylated carbamates under low temperature conditions

Fareed

Riaz

Nawaz

et al. 2019

Heliyon

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Carbamates are synthetic pesticides, extensively used throughout the world due to their broad specificity against various insect pests. However, their enormous and inadequate use have made them a potential threat to the environment. At low temperature, degradation of carbamates becomes difficult mainly because of low biological activity. In the present study, we isolated a bacterial strain from a low temperature climate where the N-methylated carbamates are used for crop protection. The bacterium, was identified as Pseudomonas plecoglossicida strain (TA3) by 16S rRNA analysis. Degradation experiments with both free and immobilized cells in minimal salt medium indicated that the strain TA3 utilized carbaryl, carbofuran and aldicarb as both carbon and nitrogen source. TA3 can grow well at 4 °C and demonstrated the ability to degrade three carbamates (50 μgml−1) at low temperature. The immobilized cells were found more efficient than their free cells counter parts. Immobilized cells has ability to degrade 100% of carbamates at 30 °C while 80% at 4 °C but incase of their free cells counter parts the efficiency to degrade carbamates was less which was 60% at 4 °C and 80% at 30 °C. TA3 free cellsextract also depicted high activity against all the three carbamates even at 4 °C indicating a possible enzymatic mechanism of degradation.

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Microbial diversity and bioremediation of rhizospheric soils from Trindade Island - Brazil

Cited by 14 publications

References 45 publications

Microbiological Study in Petrol-Spiked Soil

Microbiological Study in Petrol-Spiked Soil

Advances and Applications of Water Phytoremediation: A Potential Biotechnological Approach for the Treatment of Heavy Metals from Contaminated Water

Immobilized cells of a novel bacterium increased the degradation of N-methylated carbamates under low temperature conditions

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