Synergistic degradation of crude oil by indigenous bacterial consortium and exogenous fungus Scedosporium boydii

Yuan, Xiaoyu; Zhang, Xinying; Chen, Xueping; Kong, Dewen; Liu, Xiaoyan; Shen, Shuiwen

doi:10.1016/j.biortech.2018.05.072

Cited by 78 publications

(38 citation statements)

References 41 publications

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“…The saturated hydrocarbons degradation process of consortium DL-1314 accords with the first-order reaction equation (R 2 = 0.99317, LnC = -0.1289t + 6.2723), and the reaction rate constant is 0.1289 d -1 , which is significantly higher than that of the heavy oil (0.1123 d -1 ), suggesting that saturated hydrocarbons enhanced the heavy oil degradation. This phenomenon is also reported in the previous paper on crude oil degradation [18,19].…”

Section: Biodegradation Of Saturated Hydrocarbons Of Heavy Oilsupporting

confidence: 88%

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Heavy Oil Biodegradation by Mixed Bacterial Consortium of Biosurfactant-Producing and Heavy Oil-Degrading Bacteria

Dai¹,

Lv²,

Wei³

2020

Pol. J. Environ. Stud.

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Heavy oil has been widely used to meet the escalating energy demand all over the world due to the decrease in conventional oil and gas resources. Compared with conventional crude oil, heavy oil contains more refractory resins, asphaltenes, polycyclic aromatic hydrocarbons (PAHs), heterocyclic compounds, and heavy metals [1, 2]. Many of these components are biorefractory and toxic, therefore, heavy oil can cause more serious and lasting damage to the biological environment [3, 4]. Thus, an efficient remediation technology for heavy oil contamination is urgently needed.

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Section: Biodegradation Of Saturated Hydrocarbons Of Heavy Oilsupporting

confidence: 88%

“…Previous studies on heavy oil degradation using a microbial consortium usually considered bulk parameters, such as heavy oil degradation efficiency and microbial cell number [17][18][19]. Relatively few studies have investigated the changes in the composition of heavy oil and microbial consortium during the oil degradation.…”

mentioning

confidence: 99%

Heavy Oil Biodegradation by Mixed Bacterial Consortium of Biosurfactant-Producing and Heavy Oil-Degrading Bacteria

Dai¹,

Lv²,

Wei³

2020

Pol. J. Environ. Stud.

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“…Generally, thanks to the variety of extracellular enzymes and fungal hyphae, fungi are the first key players in degrading available contaminants and recalcitrant polymers ( Wick et al, 2007 ; Fernandez-Luqueno et al, 2010 ; Deshmukh et al, 2016 ). Fungal mobilization and degradation of contaminants contribute to release bioavailable intermediates on which, in a later stage, the bacterial community can act more easily ( Smits et al, 2005 ; Scullion, 2006 ; Leonardi et al, 2008 ; Yuan et al, 2018 ). Therefore, in order to characterize and to monitor the native microbial community, the dynamics and the functional potential of both bacteria and fungi in polluted ecosystems is essential for the development of a successful bioremediation strategy ( Atlas, 1981 ; Head et al, 2014 ; Covino et al, 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Molecular and Microbiological Insights on the Enrichment Procedures for the Isolation of Petroleum Degrading Bacteria and Fungi

et al. 2018

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Autochthonous bioaugmentation, by exploiting the indigenous microorganisms of the contaminated environment to be treated, can represent a successful bioremediation strategy. In this perspective, we have assessed by molecular methods the evolution of bacterial and fungal communities during the selective enrichment on different pollutants of a soil strongly polluted by mixtures of aliphatic and polycyclic hydrocarbons. Three consecutive enrichments were carried out on soil samples from different soil depths (0–1, 1–2, 2–3 m), and analyzed at each step by means of high-throughput sequencing of bacterial and fungal amplicons biomarkers. At the end of the enrichments, bacterial and fungal contaminants degrading strains were isolated and identified in order to (i) compare the composition of enriched communities by culture-dependent and culture-independent molecular methods and to (ii) obtain a collection of hydrocarbon degrading microorganisms potentially exploitable for soil bioremediation. Molecular results highlighted that for both bacteria and fungi the pollutant had a partial shaping effect on the enriched communities, with paraffin creating distinct enriched bacterial community from oil, and polycyclic aromatic hydrocarbons generally overlapping; interestingly neither the soil depth or the enrichment step had significant effects on the composition of the final enriched communities. Molecular analyses well-agreed with culture-dependent analyses in terms of most abundant microbial genera. A total of 95 bacterial and 94 fungal strains were isolated after selective enrichment procedure on different pollutants. On the whole, isolated bacteria where manly ascribed to Pseudomonas genus followed by Sphingobacterium, Bacillus, Stenothrophomonas, Achromobacter, and Serratia. As for fungi, Fusarium was the most abundant genus followed by Trichoderma and Aspergillus. The species comprising more isolates, such as Pseudomonas putida, Achromobacter xylosoxidans and Ochromobactrum anthropi for bacteria, Fusarium oxysporum and Fusarium solani for fungi, were also the dominant OTUs assessed in Illumina.

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“…Ortho ring cleavage of catechol has also been observed with a representative of Paraburkholderia phytofirmans (Donos et al 2017). The biodegradation potential of members of the genus Paraburkholderia for aromatic compounds has been reported (Li et al 2017;Lee and Jeon 2018;Yuan et al 2018). Community analyses showed that Paraburkholderia species degrade rarely n-hexadecane (Lee et al 2019).…”

Section: Discussionmentioning

confidence: 88%

Culturable bacteria from an Alpine coniferous forest site: biodegradation potential of organic polymers and pollutants

2020

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The potential of the culturable bacterial community from an Alpine coniferous forest site for the degradation of organic polymers and pollutants at low (5 °C) and moderate (20 °C) temperatures was evaluated. The majority of the 68 strains belonged to the phylum Proteobacteria (77%). Other strains were related to Bacteroidetes (12%), Alphaproteobacteria (4%), Actinobacteria (3%), and Firmicutes (3%). The strains were grouped into 42 different OTUs. The highest bacterial diversity was found within the phylum Bacteroidetes. All strains, except one, could grow at temperatures from 5 to 25 °C. The production of enzyme activities involved in the degradation of organic polymers present in plant litter (carboxymethyl cellulose, microgranular cellulose, xylan, polygalacturonic acid) was almost comparable at 5 °C (68%) and 20 °C (63%). Utilizers of lignin compounds (lignosulfonic acid, lignin alkali) as sole carbon source were found to a higher extent at 20 °C (57%) than at 5 °C (24%), but the relative fractions among positively tested strains utilizing these compounds were almost identical at the two temperatures. Similar results were noted for utilizers of organic pollutants (n-hexadecane, diesel oil, phenol, glyphosate) as sole carbon source. More than two-thirds showed constitutively expressed catechol-1,2-dioxygenase activity both at 5 °C (74%) and 20 °C (66%). Complete phenol (2.5 mmol/L) degradation by strain Paraburkholderia aromaticivorans AR20-38 was demonstrated at 0–30 °C, amounts up to 7.5 mmol/L phenol were fully degraded at 10–30 °C. These results are useful to better understand the effect of changing temperatures on microorganisms involved in litter degradation and nutrient turnover in Alpine forest soils.

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Synergistic degradation of crude oil by indigenous bacterial consortium and exogenous fungus Scedosporium boydii

Cited by 78 publications

References 41 publications

Heavy Oil Biodegradation by Mixed Bacterial Consortium of Biosurfactant-Producing and Heavy Oil-Degrading Bacteria

Heavy Oil Biodegradation by Mixed Bacterial Consortium of Biosurfactant-Producing and Heavy Oil-Degrading Bacteria

Molecular and Microbiological Insights on the Enrichment Procedures for the Isolation of Petroleum Degrading Bacteria and Fungi

Culturable bacteria from an Alpine coniferous forest site: biodegradation potential of organic polymers and pollutants

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