Heavy Metals as a Factor Increasing the Functional Genetic Potential of Bacterial Community for Polycyclic Aromatic Hydrocarbon Biodegradation

Staninska-Pięta, Justyna; Czarny, Jakub; Piotrowska-Cyplik, Agnieszka; Juzwa, Wojciech; Wolko, Łukasz; Nowak, J.; Cyplik, Paweł

doi:10.3390/molecules25020319

Cited by 24 publications

(4 citation statements)

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“…Similarly, other studies reported that E. agglomerans secretes specific enzymes that affect heavy metals' mobility and bioavailability in microorganisms [37]. In other studies, Kumar et al [38] and Acioly et al [39] reported that E. agglomerans is a good bioremediation agent and can effectively remove Cd from contaminated environments.…”

Section: Discussionmentioning

confidence: 85%

Heavy Metals and Microbial Diversity: A Comparative Analysis of Rivers Swat and Kabul

Ali,

Khan,

Ali

et al. 2023

Water

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Water contamination with heavy metals seriously affects water and sediment quality and may affect the aquatic biota. This study assessed the impact of heavy metals on the morphological characteristics of aquatic microorganisms in potentially contaminated water. Different physicochemical parameters and heavy metals contents were analyzed for toxicological assessment along with microbial diversity in the rivers Swat and Kabul. The pH of River Swat water was neutral to slightly alkaline, while River Kabul was neutral to slightly acidic. The results showed substantial variations in heavy metal concentration across different sampling points. In both River Swat and River Kabul water samples, Cu and Zn concentrations were below the permissible limits for surface and drinking water qualities while the rest of the heavy metals exceeded the permissible limit with Cd being the most abundant heavy metal. Similarly, in sediment samples all the heavy metals were below the permissible limits except for Cd that exceeded the Environment Canada (EC) limits in River Swat and EC and NOVA limits in River Kabul. The rest of the heavy metals concentrations were within the permissible limits, with few exceptions. The results showed that in River Swat, most of the contamination was of geogenic origin, while the main source of contamination in River Kabul was anthropogenic. Results of microbial analysis showed that River Swat has more diversity than River Kabul, which may be due to the low contamination profile of River Swat. It was further observed that high heavy metal concentrations negatively impact the morphological characteristics of microorganisms. The heavy metals concentration and microbial diversity were closely related to each other.

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Section: Discussionmentioning

confidence: 85%

Heavy Metals and Microbial Diversity: A Comparative Analysis of Rivers Swat and Kabul

Ali,

Khan,

Ali

et al. 2023

Water

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“…Analysis of 16S rRNA gene with the profiling phylogenetic marker genes is an important tool for the study of microbial community [ 36 , 37 ]. In this study, the picrust2 program was used to predict the function of dada2-filtered raw data and MetaCyc pathway pairs.…”

Section: Resultsmentioning

confidence: 99%

Microbial Characteristics and Safety of Dairy Manure ComPosting for Reuse as Dairy Bedding

Wang

Dong

et al. 2020

Biology

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Changes in bacterial community, phenotype, metabolic function, and pathogenic bacteria content in recycled manure solids (RMS) were analyzed by 16S rRNA sequencing, Bugbase, picrost2, and qPCR, respectively. The data from RMS bedding were compared to those of sand bedding and rice husk bedding. The results show that the proportion of potentially pathogenic bacteria among the manure flora of RMS after dry and wet separation, after composting, and after sun-cure storage was 74.00%, 26.03%, and 49.067%, respectively. Compared to RMS bedding, the proportion of potentially pathogenic microorganisms in sand bedding and rice husk bedding was higher. The picrust2 analyses show that the level of lipopolysaccharide biosynthesis changed significantly during RMS processing. In addition, the qPCR results show that composting could effectively reduce the detection and quantification of pathogens, except Streptococcus uberis, in RMS bedding. In general, composting is an essential step to improve the safety of bedding materials in the process of fecal treatment. However, at the same time, RMS bedding may increase the risk of mastitis caused by Streptococcus uberis.

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“…Lead seemed to have a marginally greater effect. The negative effect of metals on biodegradation of PAHs is well known [1,18,29,30]. It is thought that co-contamination exacerbates the overall toxic effect on microbial cells.…”

Section: Effect Of Metal Co-contaminant Concentration On 'M'mentioning

confidence: 99%

Structural Selectivity of PAH Removal Processes in Soil, and the Effect of Metal Co-Contaminants

2022

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Polycyclic aromatic hydrocarbons (PAHs) form a convenient structural series of molecules with which to examine the selectivity exerted on their removal by soil microbiota. It is known that there is an inverse relationship between PAH molecular size and degradation rates in soil. In this paper, we look at how the magnitude of the slope for this relationship, m, can be used as an indicator of the effect of metal co-contaminants on degradation rates across a range of PAH molecular weights. The analysis utilises data collected from our previous microcosm study (Deary, M.E.; Ekumankama, C.C.; Cummings, S.P. Development of a novel kinetic model for the analysis of PAH biodegradation in the presence of lead and cadmium co-contaminants. Journal of Hazard Materials 2016, 307, 240–252) in which we followed the degradation of the 16 US EPA PAHs over 40 weeks in soil microcosms taken from a high organic matter content woodland soil. The soil was amended with a PAH mixture (total concentration of 2166 mg kg−1) and with a range of metal co-contaminant concentrations (lead, up to 782 mg kg−1; cadmium up to 620 mg kg−1; and mercury up to 1150 mg kg−1). It was found that the magnitude of m increases in relation to the applied concentration of metal co-contaminant, indicating a more adverse effect on microbial communities that participate in the removal of higher molecular weight PAHs. We conclude that m is a useful parameter by which we might measure the differential effects of environmental contaminants on the PAH removal. Such information will be useful in planning and implementing remediation strategies.

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Heavy Metals as a Factor Increasing the Functional Genetic Potential of Bacterial Community for Polycyclic Aromatic Hydrocarbon Biodegradation

Cited by 24 publications

References 50 publications

Heavy Metals and Microbial Diversity: A Comparative Analysis of Rivers Swat and Kabul

Heavy Metals and Microbial Diversity: A Comparative Analysis of Rivers Swat and Kabul

Microbial Characteristics and Safety of Dairy Manure ComPosting for Reuse as Dairy Bedding

Structural Selectivity of PAH Removal Processes in Soil, and the Effect of Metal Co-Contaminants

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