Selected microbial diversity of contaminated landfill soil of Peninsular Malaysia and the behavior towards heavy metal exposure

Barasarathi, Jayanthi; Emenike, C. U.; Pariatamby, Agamuthu; Simarani, Khanom; Mohamad, Sharifah; Fauziah, Shahul Hamid

doi:10.1016/j.catena.2016.06.033

Cited by 49 publications

(17 citation statements)

References 18 publications

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“…and Pseudomonas sp. are the most commonly reported bacteria in soil, and possess much higher tolerance to heavy metals and other substances that are ever present in the environment [10,[24][25][26][27][28]. Dinucleotide repeats of eight bases (GCG CGC GC) were observed in all Bacillus sp.…”

Section: Molecular Identification Of Bacteriamentioning

confidence: 99%

Isolation and identification of metal-tolerant and antibiotic-resistant bacteria from soil samples of Cachar district of Assam, India

Nath¹,

Paul²,

Roy³

et al. 2019

SN Appl. Sci.

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The present study aims to assess the physicochemical properties and prevalence of microbial communities in soils samples collected from different locations of Cachar district, Assam, India. Bacterial communities in the soil were screened by morphological, biochemical and 16S rDNA sequence analysis and were identified as Bacillus megaterium, Bacillus cereus, Pseudomonas aeruginosa and Chromobacterium pseudoviolaceum. High concentrations of toxic metals negatively affect bacterial growth, and therefore, the minimum inhibitory concentration of isolated bacteria was determined against Cd, Pb, Fe and Cu by agar dilution technique. Co-resistance of antibiotic was also determined, which demonstrated that most of the metal-tolerant isolates were resistant to Methicillin and Penicillin. However, P. aeruginosa showed resistance to other antibiotics such as Cefdinir, Ampicillin, Kanamycin, Rifampicin and Vancomycin. The development and evolution of antibiotic resistance in soil bacteria occurs very likely naturally as a result of unethical and non-scientific disposal of toxic substances and industrial discharge, which also includes heavy-metal effluents and other clinical by-products. Therefore, pragmatic measures must be taken to limit the spread of antimicrobial resistance across the environment and to reduce the incidence of healthcare-associated infections.

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Section: Molecular Identification Of Bacteriamentioning

confidence: 99%

Isolation and identification of metal-tolerant and antibiotic-resistant bacteria from soil samples of Cachar district of Assam, India

Nath¹,

Paul²,

Roy³

et al. 2019

SN Appl. Sci.

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“…Heavy metals disrupt metabolic functions in human being in two ways: it accumulates and thereby disrupts function in vital organs and glands such as the heart, brain, kidneys, bone, liver, etc; displaces the vital nutritional minerals from their original place and thereby, hindering their biological functions [5]. U.…”

Section: Introductionmentioning

confidence: 99%

Remediation of Heavy Metal Contaminated Soil Using Potential Microbes Isolated from a Closed Disposal Site

Fauziah¹,

Barasarathi²,

Emenike³

et al. 2017

IJBBB

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Soil environment is a major sink for a multitude of chemicals and heavy metals, which inevitably leads to environmental contamination problems. Various human activities including agricultural, urban or industrial, or landfilling are major contributors to heavy metal contamination in the environment. Since landfilling is one of the ultimate waste disposal methods, the generation of leachate is inevitable. Leachate from landfill is highly heterogeneous and consist high amount of heavy metal. Subsequent movement of the leachate into the surrounding soil, ground water or surface water could lead to severe pollution problems to and cause toxicity to human and other living organisms. Microorganisms has the ability to solubilize the metals (or increase their bioavailability) via the production of siderophores and adsorb the metals in their biomass on metal-induced outer membrane proteins and by bio precipitation. Therefore this study aimed to remediate heavy metal in leachate contaminated soil from a closed non-sanitary landfill in Kuala Lumpur. Preliminary soil and leachate characterization revealed high amount of metal contaminants as compared to the prescribed limit by local and international standard. Total of eighteen microbes were isolated from the contaminated site and were grouped into two treatments, proteobacteria and non-proteo bacteria.Comparison between the treatments revealed that proteobacteria (Treatment A) were performing higher metal removal activity compared to non-proteobacteria (Treatment B) and control (Treatment C). Out of four metals tested in this study, three of the metals (As (71.86%), Ni (50.8%), Al (87.15%)) were removed significantly by the addition of Treatment A. Highest metal removal rate constant was obtained for Al at 0.02 day -1 . Therefore, it can be concluded that the addition of microbes, namely proteobacteria to leachate contaminated soil can remove the heavy metal content at a significant rate.

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“…This study found that the soil environment at different distances on the two sides of the Shun’an River near the mining area was significantly different ( Figure 2 , Tables S1 and S2 ). In addition to being affected by varying degrees of heavy metal pollution, microbial communities adapt to new habitats by altering their abundance and structure [ 43 ]. This is similar to the previous research results, that is, how the microbial community structure in the soil varies with distance, plant type, and among habitats with different levels of heavy metal pollution [ 43 , 44 ].…”

Section: Discussionmentioning

confidence: 99%

“…In addition to being affected by varying degrees of heavy metal pollution, microbial communities adapt to new habitats by altering their abundance and structure [ 43 ]. This is similar to the previous research results, that is, how the microbial community structure in the soil varies with distance, plant type, and among habitats with different levels of heavy metal pollution [ 43 , 44 ]. Zhang et al [ 35 ] found that heavy metals can induce the establishment of specific microbial communities.…”

Section: Discussionmentioning

confidence: 99%

Ecological Effects of Heavy Metal Pollution on Soil Microbial Community Structure and Diversity on Both Sides of a River around a Mining Area

Zhao

Huang

Zhu

et al. 2020

IJERPH

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The objectives of this study were to understand the characteristics of heavy metal pollution caused by mining activities on the two sides of the Shun’an river and the response of soil microorganisms to the habitats by different contamination levels and vegetation. This paper selected soil samples from the banks of the Shun’an River near the Shizishan mining area, which is at the left of the river, in Tongling, Anhui Province, China. Using Illumina MiSeq 2500 technology, we analyzed the relationship between environmental factors and microbial communities. As the distance from the mining area increased, the heavy metal comprehensive pollution and potential risk value decreased. Additionally, the pollution severity and risk value of the left bank, where the mining area lies, were generally higher than those of the right bank. Because the symmetric sampling points on both banks of the river had similar planting types, their environmental factors and microbial community structure were similar and clustered. However, under different vegetation, the paddy soils tended to have a higher nutrient content and community richness and diversity than the vegetable fields or the abandoned land. It was found that soil microbial communities in this area were mostly affected by pH and Nemerow pollution index (PN). The pH significantly affected the abundance and structure of most microorganisms. In addition, Proteobacteria, Acidobacteria, and Bacteroidetes had significant tolerance to Zn, Pb, and Cd. By exploring the potential use of these tolerant microorganisms, we seek to provide strains and the theoretical basis for the bioremediation of areas contaminated by heavy metal.

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Selected microbial diversity of contaminated landfill soil of Peninsular Malaysia and the behavior towards heavy metal exposure

Cited by 49 publications

References 18 publications

Isolation and identification of metal-tolerant and antibiotic-resistant bacteria from soil samples of Cachar district of Assam, India

Isolation and identification of metal-tolerant and antibiotic-resistant bacteria from soil samples of Cachar district of Assam, India

Remediation of Heavy Metal Contaminated Soil Using Potential Microbes Isolated from a Closed Disposal Site

Ecological Effects of Heavy Metal Pollution on Soil Microbial Community Structure and Diversity on Both Sides of a River around a Mining Area

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