Petroleum degradation by endophytic Streptomyces spp. isolated from plants grown in contaminated soil of southern Algeria

Baoune, Hafida; Hadj-Khelil, Aminata Ould El; Pucci, Graciela; Sineli, Pedro Eugenio; Loucif, Lotfi; Polti, Marta Alejandra

doi:10.1016/j.ecoenv.2017.09.013

Cited by 88 publications

(52 citation statements)

References 59 publications

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“…Reference [50] isolated endophytic bacteria from roots of plants that growing in a contaminated with crude oil environment and evaluated the capacities to biodegrade crude by bacterial isolates at 1% concentration; obtaining similar hydrocarbon removal rates to those obtained in this study. The isolated Streptomyces sp.…”

Section: Discussionmentioning

confidence: 52%

“…and Poaceae sp., all the collected plants have fungal organisms with variable capacities to degrade hydrocarbons in this essay. Evidence obtained by [49] and [50] demonstrates the plant endophytic composition could be affected by contaminants, stimulating the proliferation of organisms tolerant to these conditions. Interestingly, the plants with the highest number of endophytic isolates, Marattia sp.…”

Section: Discussionmentioning

confidence: 99%

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Total Petroleum Hydrocarbon Degradation by Endophytic Fungi from the Ecuadorian Amazon

Marín¹,

Navarrete²,

Narváez-Trujillo³

2018

AiM

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The capacity of 133 fungal endophyte isolates for degrading petroleum hydrocarbons was evaluated. The endophytes were isolated from leaf and stem tissues from 23 plants collected in a natural habitat contaminated with crude oil in southwestern Ecuador. Their capacity for hydrocarbon biodegradation was tested by an in vitro colorimetric qualitative test during 10 days, using the Minimal Salt Medium and crude oil as the carbon source. Taxonomic identification of the endophytic fungi that showed bioactivity in the qualitative test was carried out by analysis of the ITS gene of the region 18S of the rDNA. Endophytes showed the best results in the previous qualitative test where selected for a quantitative in vitro test for 30 days. Residual hydrocarbons were tracked by infrared spectroscopy (IR) and gas chromatography (GC) with a flame ionization detector. The maximum removal rates of total petroleum hydrocarbons were 99.6% (IR) and 99.8% (GC), corresponding to fungi of the genus Verticillium sp. and Xylaria sp. 1 respectively. This is the first report of biodegradation of crude oil hydrocarbons by endophytic fungi in a tropical ecosystem. The results suggest these fungal isolates are potential hydrocarbon biodegraders that could be used in bioremediation processes.

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Section: Discussionmentioning

confidence: 52%

Section: Discussionmentioning

confidence: 99%

Total Petroleum Hydrocarbon Degradation by Endophytic Fungi from the Ecuadorian Amazon

Marín¹,

Navarrete²,

Narváez-Trujillo³

2018

AiM

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“…This affects a great biodiversity, rich and diversified in actinobacteria, to which corresponds a wide chemodiversity of metabolites. A number of actinobacteria has been isolated from different ecosystems including Saharan plants [34,38,39], caves [40], waste water [41,42], river sediments [43], hypersaline areas [44][45][46][47][48][49][50][51], Saharan desert soil [22,52], and derived algae [53]. The most studied sampling sites for the isolation of actinobacteria are listed in Figure 1.…”

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confidence: 99%

Actinobacteria Derived from Algerian Ecosystems as a Prominent Source of Antimicrobial Molecules

et al. 2019

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Actinobacteria, in particular “rare actinobacteria” isolated from extreme ecosystems, remain the most inexhaustible source of novel antimicrobials, offering a chance to discover new bioactive metabolites. This is the first overview on actinobacteria isolated in Algeria since 2002 to date with the aim to present their potential in producing bioactive secondary metabolites. Twenty-nine new species and one novel genus have been isolated, mainly from the Saharan soil and palm groves, where 37.93% of the most abundant genera belong to Saccharothrix and Actinopolyspora. Several of these strains were found to produce antibiotics and antifungal metabolites, including 17 new molecules among the 50 structures reported, and some of these antibacterial metabolites have shown interesting antitumor activities. A series of approaches used to enhance the production of bioactive compounds is also presented as the manipulation of culture media by both classical methods and modeling designs through statistical strategies and the associations with diverse organisms and strains. Focusing on the Algerian natural sources of antimicrobial metabolites, this work is a representative example of the potential of a closely combined study on biology and chemistry of natural products.

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“…Although the use of endophytic microorganisms for petroleum compounds degradation has been previously reported [ 47 , 49 , 50 ], here for the first time the potential of bacterial endophytes isolated from the synanthropic plant— C. majus L. for degradation of such compounds was shown.…”

Section: Resultsmentioning

confidence: 91%

“…Baoune et al isolated endophytic Streptomyces spp. with extremely high—98% efficiency of petroleum hydrocarbons removal [ 49 ].…”

Section: Resultsmentioning

confidence: 99%

Biosurfactant production and hydrocarbon degradation activity of endophytic bacteria isolated from Chelidonium majus L.

et al. 2018

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BackgroundThe process of plant growth in the contaminated environment is often inhibited and entails the neutralization of harmful compounds. To reduce the negative impact of harmful compounds microorganisms produce unique compounds called biosurfactants. This paper describes the potential of culturable endophytic microorganisms from synanthropic plant-Chelidonium majus L. for the production of biosurfactants, as indirect plant promoting factors as well as their degradation activity. Emulsifying activity and degradation potential of tested strains were assessed by cultivation of isolates in the presence of diesel oil and waste engine oil.ResultsTen bacterial strain were isolated. Analysis of emulsifying activity revealed that all isolates possessed the ability for biosurfactant production. However, one of the isolated endophytes—2A, identified as Bacillus pumilus, exhibited the highest emulsifying activity (OD500 1.96). The same strain has shown very high degradation potential, both for diesel oil and waste engine oil hydrocarbons. Results obtained with the Phytotoxkit tests revealed that the addition of biosurfactant isolated from B. pumilus 2A strain resulted in stimulation of seed germination in soil contaminated with diesel oil (137%) and waste engine oil (120%). Positive impact of the biosurfactant produced by B. pumilus 2A on the growth of Sinapis alba in hydrocarbons contaminated soil was demonstrated.ConclusionsThe endophytic strain identified as Bacillus pumilus 2A produce biosurfactant that is able to act as plant-growth promoting agent. Endophytic bacteria isolated from Chelidonium majus L. exhibit potential for hydrocarbons degradation and biosurfactant production. These properties provide promising perspectives for application of biosurfactants as potential agents for bioremediation of environment contaminated with hydrocarbons.

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Petroleum degradation by endophytic Streptomyces spp. isolated from plants grown in contaminated soil of southern Algeria

Cited by 88 publications

References 59 publications

Total Petroleum Hydrocarbon Degradation by Endophytic Fungi from the Ecuadorian Amazon

Total Petroleum Hydrocarbon Degradation by Endophytic Fungi from the Ecuadorian Amazon

Actinobacteria Derived from Algerian Ecosystems as a Prominent Source of Antimicrobial Molecules

Biosurfactant production and hydrocarbon degradation activity of endophytic bacteria isolated from Chelidonium majus L.

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