Bioremediation of polycyclic aromatic hydrocarbons by Acinetobacter species isolated from ecological sources

AL‐Hadithi, Hadeel T.; Al-Razzaq, E.A.; Fadhil, Ghazwan F.

doi:10.22438/jeb/38/5/mrn-422

Cited by 10 publications

(6 citation statements)

References 17 publications

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“…Acinetobacter species are free‐living saprophytes found ubiquitously in the environment and have been reported from water, soil, vegetables, and various insect guts (Doughari et al, 2011). Some Acinetobacter play crucial roles in herbivores in overcoming plant defenses through detoxification of phytochemicals (Mason et al, 2018) and have a high potential to degrade crude oil and fuel in saline water (Al‐Hadithi et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Bacteria associated with Lucilia sericata larvae reared on fish wastes

Ulanova

Tikhonova

Кравченко

2020

Entomologia Exp Applicata

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The green blowfly, Lucilia sericata (Meigen) (Diptera: Calliphoridae), is a cosmopolitan species of great medical, veterinary, and forensic importance. In addition, their larvae are among the most promising agents for the bioconversion of low‐quality biomass, such as organic waste, into sustainable and nutritionally valuable proteins for farmed fish and poultry. Despite the considerable medical and economic importance, the current literature provides limited information about microbiota associated with larvae. The present study aims to fill this knowledge gap. Freshly harvested L. sericata larvae (maggots) grown on fish wastes were investigated by conventional and molecular approaches to evaluate culturable microbial numbers and unculturable microbial diversity associated with the larval cuticle (external samples) and the internal body. In total 200 bacterial isolates were obtained; 46% of the strains originated from external samples and 58% originated from internal body samples produced extracellular protease enzymes, which may be involved in the digestion of proteins during larval feeding. In total 12 predominant bacteria with high proteolytic activity were further identified by morphological, physiological, biochemical, and molecular tools. Proteolytic bacteria in internal samples included Proteus, Providencia, Micrococcus, Deinococcus, whereas in external samples Providencia, Pseudomonas, and Acinetobacter were found. 16S rRNA clone library analysis revealed that the majority of internal bacteria (35%) were taxonomically assigned as Xanthomonadaceae (Schineria, Xylella, Ignnatzchineria), 28% Morganellaceae (Proteus, Providencia, Serratia), and 14% Enterobacteriaceae (Vagococcus, Serratia). Less abundant were bacteria of the genera Clostridium (3%), Erypelothrix (3%), and Oceanispherum (2%). This knowledge will be useful for biotechnological application of L. sericata.

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Section: Discussionmentioning

confidence: 99%

Bacteria associated with Lucilia sericata larvae reared on fish wastes

Ulanova

Tikhonova

Кравченко

2020

Entomologia Exp Applicata

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“…Furthermore, oil spills tend to persist longer in the Antarctic environment owing to the chronically low temperatures, limited nutrient availability and dry conditions, which slow down the rates of microbial processes and abiotic degradation (Aislabie et al, 2006;Ahmad et al, 2013;Roslee et al, 2020). Not with standing this, the use of microorganisms for remediating environmental pollutants such as petroleum hydrocarbons is receiving increasing attention as it causes less damage to the environment, is economically desirable and can completely remove harmful pollutants (Ahmad et al, 2013;Ibrahim et al, 2015;Nawawi et al, 2016;Al-Hadithi et al, 2017). In the present study, the ability of psychrotolerant bacterial strains Arthrobacter sp.…”

Section: Introductionmentioning

confidence: 99%

Effects of heavy metals on diesel metabolism of psychrotolerant strains of Arthrobacter sp. from Antarctica

Abdulrasheed

Roslee

Zakaria

et al. 2020

JEB

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This present study aimed at examining the ability of cold-adapted Antarctic bacteria to tolerate and degrade diesel in the presence of different types of heavy metal co-pollutants. Arthrobacter sp. strains AQ5-05 and AQ5-06, originally isolated from Antarctic soils, were grown on Bushnell-Haas medium containing 1 ppm of heavy metal ions (As, Ag, Cd, Co, Cu, Cr, Hg, Ni, and Pb) supplemented with 3% (v/v) diesel. Diesel degradation was determined gravimetrically, while bacterial growth was evaluated by measuring the optical density of media (OD). 600 nm In the absence of heavy metal ions, strain AQ5-06 achieved 37.5% diesel mineralisation, while strain AQ5-05 achieved 34.5%. The diesel degrading abilities of both strains were significantly inhibited by exposure to < 1 ppm of Ag or Hg. In contrast, no change in degradation ability was observed using other tested heavy metals. The IC of Ag and Hg on 50 diesel degradation by the two strains were (0.2 and 0.4 ppm) and (0.3 and 0.2 ppm), respectively. Arthrobacter sp. Strains AQ5-05 and AQ5-06 may contain genes for alkane degradation and heavy metal resistance for remediating diesel-polluted soil in Antarctic and other cold regions. Antarctica, Arthrobacter sp., Biodegradation, Diesel, Heavy metals Effects of heavy metals on diesel metabolism of psychrotolerant strains of Arthrobacter sp. from Antarctica

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“…Four Acinetobacter strains (A. johnsonii, A. modestus, A. tjernbergiae, and A. junii) have been identified. These species have previously been identified and isolated from tannery and residual wastewaters, characterised and evaluated for chromium bioremediation [95][96][97][98] and Cr 6+ transformation to Cr 3+ [99,100]. Brevundimonas have been mainly identified and isolated from sedimented waters [101], rivers [102], and soil samples [103][104][105].…”

Section: Bioinformatics and Species Identificationmentioning

confidence: 99%

Selective Isolation and Identification of Microorganisms with Dual Capabilities: Leather Biodegradation and Heavy Metal Resistance for Industrial Applications

Bonilla-Espadas,

Zafrilla,

Lifante-Martínez

et al. 2024

Microorganisms

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Tanning, crucial for leather production, relies heavily on chromium yet poses risks due to chromium’s oxidative conversion, leading to significant wastewater and solid waste generation. Physico-chemical methods are typically used for heavy metal removal, but they have drawbacks, prompting interest in eco-friendly biological remediation techniques like biosorption, bioaccumulation, and biotransformation. The EU Directive (2018/850) mandates alternatives to landfilling or incineration for industrial textile waste management, highlighting the importance of environmentally conscious practices for leather products’ end-of-life management, with composting being the most researched and viable option. This study aimed to isolate microorganisms from tannery wastewater and identify those responsible for different types of tanned leather biodegradation. Bacterial shifts during leather biodegradation were observed using a leather biodegradation assay (ISO 20136) with tannery and municipal wastewater as the inoculum. Over 10,000 bacterial species were identified in all analysed samples, with 7 bacterial strains isolated from tannery wastewaters. Identification of bacterial genera like Acinetobacter, Brevundimonas, and Mycolicibacterium provides insights into potential microbial candidates for enhancing leather biodegradability, wastewater treatment, and heavy metal bioremediation in industrial applications.

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Bioremediation of polycyclic aromatic hydrocarbons by Acinetobacter species isolated from ecological sources

Abstract: Aim:Methodology: Results:Interpretation:

Cited by 10 publications

References 17 publications

Bacteria associated with Lucilia sericata larvae reared on fish wastes

Bacteria associated with Lucilia sericata larvae reared on fish wastes

Effects of heavy metals on diesel metabolism of psychrotolerant strains of Arthrobacter sp. from Antarctica

Selective Isolation and Identification of Microorganisms with Dual Capabilities: Leather Biodegradation and Heavy Metal Resistance for Industrial Applications

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