scholarly journals An Uncultivated Nitrate-Reducing Member of the Genus Herminiimonas Degrades Toluene

2014 ◽  
Vol 80 (10) ◽  
pp. 3233-3243 ◽  
Author(s):  
So-Jeong Kim ◽  
Soo-Je Park ◽  
Man-Young Jung ◽  
Jong-Geol Kim ◽  
Eugene L. Madsen ◽  
...  

ABSTRACTStable isotope probing (SIP) is a cultivation-free methodology that provides information about the identity of microorganisms participating in assimilatory processes in complex communities. In this study, aHerminiimonas-related bacterium was identified as the dominant member of a denitrifying microcosm fed [13C]toluene. The genome of the uncultivated toluene-degrading bacterium was obtained by applying pyrosequencing to the heavy DNA fraction. The draft genome comprised ∼3.8 Mb, in 131 assembled contigs. Metabolic reconstruction of aromatic hydrocarbon (toluene, benzoate,p-cresol, 4-hydroxybenzoate, phenylacetate, and cyclohexane carboxylate) degradation indicated that the bacterium might specialize in anaerobic hydrocarbon degradation. This characteristic is novel for the orderBurkholderialeswithin the classBetaproteobacteria. Under aerobic conditions, the benzoate oxidation gene cluster (BOX) system is likely involved in the degradation of benzoate via benzoyl coenzyme A. Many putative genes for aromatic hydrocarbon degradation were closely related to those in theRhodocyclaceae(particularlyAromatoleum aromaticumEbN1) with respect to organization and sequence similarity. Putative mobile genetic elements associated with these catabolic genes were highly abundant, suggesting gene acquisition byHerminiimonasvia horizontal gene transfer.

Author(s):  
Fa-Hu Pang ◽  
Hui-Ying Yang ◽  
Jie Sun ◽  
Xing Yu ◽  
Hao Zhang

A novel bacterium, designated BD-1T, was isolated from a sludge sample. Cells of the novel Gram-stain-negative strain were identified to be facultative anaerobic, non-motile and short rod-shaped. Growth occurred at 15–37 °C (optimum, 30 °C), pH 5.0–10.0 (pH 7.0) and in 0–4.0  % NaCl (2.0 %, w/v). The 16S rRNA gene sequence of strain BD-1T showed the highest sequence similarity to Ottowia thiooxydans DSM 14619T (97.0 %), followed by Ottowia pentelensis DSM 21699T (96.3 %) and less than 96 % to other related strains. The phylogenetic trees revealed that strain BD-1T clustered within the genus Ottowia . Summed feature 3 (C16 : 1  ω7c and/or C16 : 1  ω6c, 48.2 %), C16 : 0 (23.2 %) and summed feature 8 (C18 : 1  ω7c and/or C18 : 1  ω6c, 8.6 %) were the major fatty acids (>5 %), and ubiquinone-8 was the respiratory quinone. Phosphatidylethanolamine, phosphatidylmethylethanolamine and phosphatidylglycerol were identified as the major polar lipids. Meanwhile, the G+C content of the DNA was 63.6 mol% based on the draft genome analysis. The average nucleotide identity and digital DNA–DNA hybridization values between strain BD-1T and DSM 14619T were 74.5 and 21.4  %, respectively. In addition, the novel strain completely degraded 500 mg l−1 phenylacetic acid within 72 h under the condition of 3 % NaCl. Given the results of genomic, phylogenetic, phenotypic and chemotaxonomic analyses, strain BD-1T was considered to represent a novel species of the genus Ottowia , for which the name Ottowia caeni sp. nov. is proposed. The strain is a potential resource for the bioremediation of phenylacetic acid contaminated water. The type strain is BD-1T (=CGMCC 1.18541T=KCTC 82183T).


2017 ◽  
Vol 5 (45) ◽  
Author(s):  
Arvind Kumar Singh ◽  
Bobby Chettri ◽  
Arpita Ghosh ◽  
Surendra K. Chikara ◽  
Timir Tripathi

ABSTRACT Novosphingobium panipatense P5:ABC is a hydrocarbon-degrading bacterium isolated from petroleum-contaminated soil. Here, we present the 5.74-Mb draft genome sequence with 5,206 genes and an average G+C content of 64.7%. The genomic information will improve our understanding of the diversity of N. panipatense and the mechanisms of microbe-based hydrocarbon degradation.


2012 ◽  
Vol 78 (10) ◽  
pp. 3552-3559 ◽  
Author(s):  
David R. Singleton ◽  
Jing Hu ◽  
Michael D. Aitken

ABSTRACTA betaproteobacterium within the familyRhodocyclaceaepreviously identified as a pyrene degrader via stable-isotope probing (SIP) of contaminated soil (designated pyrene group 1 or PG1) was cultivated as the dominant member of a mixed bacterial culture. A metagenomic library was constructed, and the largest contigs were analyzed for genes associated with polycyclic aromatic hydrocarbon (PAH) metabolism. Eight pairs of genes with similarity to the α- and β-subunits of ring-hydroxylating dioxygenases (RHDs) associated with aerobic bacterial PAH degradation were identified and linked to PG1 through PCR analyses of a simplified enrichment culture. In tandem with a ferredoxin and reductase found in close proximity to one pair of RHD genes, six of the RHDs were cloned and expressed inEscherichia coli. Each cloned RHD was tested for activity against nine PAHs ranging in size from two to five rings. Despite differences in their predicted protein sequences, each of the six RHDs was capable of transforming phenanthrene and pyrene. Three RHDs could additionally transform naphthalene and fluorene, and these genotypes were also associated with the ability of theE. coliconstructs to convert indole to indigo. Only one of the six cloned RHDs was capable of transforming anthracene and benz[a]anthracene. None of the tested RHDs were capable of significantly transforming fluoranthene, chrysene, or benzo[a]pyrene.


2020 ◽  
Vol 70 (11) ◽  
pp. 5943-5949 ◽  
Author(s):  
Yun-zhen Yang ◽  
Ji-feng Chen ◽  
Wan-ru Huang ◽  
Ran-ran Zhang ◽  
Shuangjiang Liu ◽  
...  

A novel Gram-stain-negative, strictly aerobic, rod-shaped, brick red-pigmented bacterium, designated R-22-1 c-1T, was isolated from water from Baiyang Lake, Hebei Province, PR China. The strain was able to grow at 20–30 °C (optimum, 30 °C) and pH 6–7 (optimum, pH 6) in Reasoner’s 2A medium. 16S rRNA gene sequence and phylogenetic analyses of R-22-1 c-1T revealed closest relationships to Rufibacter immobilis MCC P1T (97.8 %), Rufibacter sediminis H-1T (97.9 %) and Rufibacter glacialis MDT1-10-3T (97.0 %), with other species of the genus Rufibacter showing less than 97.0 % sequence similarity. The predominant polar lipids were phosphatidylethanolamine, two unidentified aminophospholipids and three unidentified lipids. The major cellular fatty acids were iso-C15 : 0, C15 : 1  ω6c, C17 : 1  ω6c, anteiso-C15 : 0, summed feature 3 (iso-C15 : 0 2-OH and/or C16 : 1  ω7c and/or C16 : 1  ω6c) and summed feature 4 (iso-C17 : 1I and/or anteiso-C17 : 1B). The respiratory quinone was MK-7. The draft genome of R-22-1 c-1T was 5.6 Mbp in size, with a G+C content of 50.2 mol%. The average nucleotide identity and digital DNA–DNA hybridization relatedness values between strain R-22-1 c-1T and related type strains were R. immobilis MCC P1T (77.2 and 21.8 %), R. sediminis H-1T (81.6 and 21.4 %) and R. tibetensis 1351T (78.5 and 22.9 %). Based on these phylogenetic, chemotaxonomic and genotypic results, strain R-22-1 c-1T represents a novel species in the genus Rufibacter , for which the name Rufibacter latericius sp. nov. is proposed. The type strain is R-22-1 c-1T (=CGMCC 1.13570T=KCTC 62781T).


Author(s):  
Md. Amdadul Huq ◽  
Muhammad Zubair Siddiqi ◽  
Sri Renukadevi Balusamy ◽  
M. Mizanur Rahman ◽  
Md Ashrafudoulla ◽  
...  

A Gram-stain-negative, aerobic and rod-shaped novel bacterial strain, designated MAH-26T, was isolated from rhizospheric soil of a pine tree. The colonies were orange coloured, smooth, spherical and 0.7–1.8 mm in diameter when grown on Reasoner's 2A (R2A) agar for 2 days. Strain MAH-26T was able to grow at 10–40 °C, at pH 6.0–9.0 and with 0–1.0 % NaCl. Cell growth occurred on nutrient agar, R2A agar, tryptone soya agar and Luria–Bertani agar. The strain gave positive results in oxidase and catalase tests. Strain MAH-26T was closely related to Flavihumibacter sediminis CJ663T and Parasegetibacter terrae SGM2-10T with a low 16S rRNA gene sequence similarity (92.8 and 92.9 %, respectively) and phylogenetic analysis indicated that the strain formed a distinct phylogenetic lineage from the members of the closely related genera of the family Chitinophagaceae . Strain MAH-26T has a draft genome size of 6 857 405 bp, annotated with 5173 protein-coding genes, 50 tRNA and two rRNA genes. The genomic DNA G+C content was 41.5 mol%. The predominant isoprenoid quinone was menaquinone 7. The major fatty acids were identified as iso-C15:0, iso-C15:1 G and iso-C17:0 3OH. On the basis of phylogenetic inference and phenotypic, chemotaxonomic and molecular properties, strain MAH-26T represents a novel species of a novel genus of the family Chitinophagaceae , for which the name Pinibacter aurantiacus gen. nov., sp. nov. is proposed. The type strain of Pinibacter aurantiacus is MAH-26T (=KACC 19749T=CGMCC 1.13701T).


2019 ◽  
Vol 8 (17) ◽  
Author(s):  
Valeriya A. Romanova ◽  
Eugenia A. Boulygina ◽  
Maria N. Siniagina ◽  
Maria I. Markelova ◽  
Tatiana V. Grigoryeva ◽  
...  

Here, we report the genome sequence of Tsukamurella tyrosinosolvens strain PS2, which was isolated from hydrocarbon sludge of an organic synthesis factory. This strain was able to utilize a wide range of n-alkanes, from C16 to C35, as sole carbon sources.


2017 ◽  
Vol 48 (3) ◽  
pp. 391-392 ◽  
Author(s):  
Edmo M. Rodrigues ◽  
Pedro Marcus P. Vidigal ◽  
Victor S. Pylro ◽  
Daniel K. Morais ◽  
Laura Rabelo Leite ◽  
...  

2012 ◽  
Vol 194 (23) ◽  
pp. 6677-6677 ◽  
Author(s):  
Qiliang Lai ◽  
Weiwei Li ◽  
Baojiang Wang ◽  
Zhiwei Yu ◽  
Zongze Shao

ABSTRACTCycloclasticussp. strain P1 was isolated from deep-sea sediments of the Pacific Ocean and characterized as a unique bacterium in the degradation of pyrene, a four-ring polycyclic aromatic hydrocarbon (PAH). Here we report the complete genome of P1 and genes associated with PAH degradation.


2017 ◽  
Vol 5 (8) ◽  
Author(s):  
Juan Ling ◽  
Liyun Lin ◽  
Yanying Zhang ◽  
Xiancheng Lin ◽  
Manzoor Ahamad ◽  
...  

ABSTRACT Here, we report the draft genome sequence of Marinobacter hydrocarbonoclasticus strain STW2, which was isolated from the rhizosphere of seagrass Enhalus acodoides. This study will facilitate future studies on the genetic pathways of marine microbes capable of both polycyclic aromatic hydrocarbon degradation and nitrate reduction.


PLoS ONE ◽  
2016 ◽  
Vol 11 (6) ◽  
pp. e0157201
Author(s):  
Sang-Yeop Lee ◽  
Gun-Hwa Kim ◽  
Sung Ho Yun ◽  
Chi-Won Choi ◽  
Yoon-Sun Yi ◽  
...  

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