Dataset Information

Biodegradation of Phenanthrene and Heavy Metal Removal by Acid-Tolerant Burkholderia fungorum FM-2.

ABSTRACT: Phenanthrene (PHE) is a common pollutant of acidic and non-acidic environments that is recalcitrant to biodegradation. Herein, Burkholderia fungorum FM-2 (GenBank accession no. KM263605) was isolated from oil-contaminated soil in Xinjiang and characterized morphologically, physiologically, and phylogenetically. Environmental parameters including PHE concentration, pH, temperature, and salinity were optimized, and heavy metal tolerance was investigated. The MIC of strain FM-2 tolerant to Pb(II) and Cd(II) was 50 and 400 mg L-1, respectively, while the MIC of Zn(II) was >1,200 mg L-1. Atypically for a B. fungorum strain, FM-2 utilized PHE (300 mg L-1) as a sole carbon source over a wide pH range (between pH 3 and 9). PHE and heavy metal metabolism were assessed using gas chromatography (GC), inductively coupled plasma optical emission spectroscopy (ICP-OES), scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), Fourier-transform infrared (FTIR) spectroscopy and ultraviolet (UV) absorption spectrometry. The effects of heavy metals on the bioremediation of PHE in soil were investigated, and the findings suggest that FM-2 has potential for combined bioremediation of soils co-contaminated with PHE and heavy metals.

SUBMITTER: Liu XX

PROVIDER: S-EPMC6427951 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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Publications

Biodegradation of Phenanthrene and Heavy Metal Removal by Acid-Tolerant <i>Burkholderia fungorum</i> FM-2.

Liu Xin-Xin XX Hu Xin X Cao Yue Y Pang Wen-Jing WJ Huang Jin-Yu JY Guo Peng P Huang Lei L

Frontiers in microbiology 20190314

Phenanthrene (PHE) is a common pollutant of acidic and non-acidic environments that is recalcitrant to biodegradation. Herein, <i>Burkholderia fungorum</i> FM-2 (GenBank accession no. KM263605) was isolated from oil-contaminated soil in Xinjiang and characterized morphologically, physiologically, and phylogenetically. Environmental parameters including PHE concentration, pH, temperature, and salinity were optimized, and heavy metal tolerance was investigated. The MIC of strain FM-2 tolerant to P ...[more]

PMID: 30930861

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Project description:Heavy-metal-tolerant bacteria, GIMN1.004(T), was isolated from mine soils of Dabaoshan in South China, which were acidic (pH 2-4) and polluted with heavy metals. The isolation was Gram-negative, aerobic, non-spore-forming, and rod-shaped bacteria having a cellular width of 0.5-0.6 µm and a length of 1.3-1.8 µm. They showed a normal growth pattern at pH 4.0-9.0 in a temperature ranging from 5 °C to 40 °C.The organism contained ubiquinone Q-8 as the predominant isoprenoid quinine, and C(16:0), summed feature 8 (C(18:1)?7c and C(18:1)?6c), C(18:0), summed feature 3 (C(16:1)?7c or iso-C(15:0) 2-OH), C(17:0) cyclo, C(18:1)?9c, C(19:0) cyclo ?8c, C(14:0) as major fatty acid. These profiles were similar to those reported for Burkholderia species. The DNA G+C % of this strain was 61.6%. Based on the similarity to 16S rRNA gene sequence, GIMN1.004(T) was considered to be in the genus Burkholderia. The similarities of 16S rRNA gene sequence between strain GIMN1.004(T) and members of the genus Burkholderia were 96-99.4%, indicating that this novel strain was phylogenetically related to members of that genus. The novel strain showed the highest sequence similarities to Burkholderia soli DSM 18235(T) (99.4%); Levels of DNA-DNA hybridization with DSM 18235(T) was 25%. Physiological and biochemical tests including cell wall composition analysis, differentiated phenotype of this strain from that closely related Burkholderia species. The isolation had great tolerance to cadmium with MIC of 22 mmol/L, and adsorbability of 144.94 mg/g cadmium,and it was found to exhibit antibiotic resistance characteristics. The adsorptive mechanism of GIMN1.004(T) for cadmium depended on the action of the amide,carboxy and phosphate of cell surface and producing low-molecular-weight (LMW) organic acids to complex or chelated Cd(2+).Therefore, the strain GIMN1.004(T) represented a new cadmium resistance species, which was tentatively named as Burkholderia dabaoshanensis sp. nov. The strain type is GIMN1.004(T) (= CCTCC M 209109(T) = NRRL B-59553(T)).

Dataset Information

Biodegradation of Phenanthrene and Heavy Metal Removal by Acid-Tolerant Burkholderia fungorum FM-2.

Publications

Biodegradation of Phenanthrene and Heavy Metal Removal by Acid-Tolerant <i>Burkholderia fungorum</i> FM-2.

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