Isolation of a novel strain of <i>Planomicrobium chinense</i> from diesel contaminated soil of tropical environment

Das, Reena; Tiwary, Bhupendra N.

doi:10.1002/jobm.201200131

Cited by 27 publications

(14 citation statements)

References 39 publications

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“…Some researches indicated that P. chinense and Arthrobacter spp. could be used as a promising plant growth promoter . Thus, appearance of P. Chinese and Arthrobacter spp.…”

Section: Discussionmentioning

confidence: 99%

Bacterial diversity and community along the succession of biological soil crusts in the Gurbantunggut Desert, Northern China

Zhang

Kong

et al. 2016

J. Basic Microbiol.

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Biological soil crusts (BSCs) are common and play critical roles in semi-arid and arid ecosystems. Bacteria, as an important community in BSCs, play critical roles in biochemical processes. However, how bacterial diversity and community change in different successional stages of BSCs is still unknown. We used 454 pyrosequencing of 16S rRNA to investigate the bacterial composition and community, and the relationships between bacterial composition and environmental factors were also explored. In different successional stages of BSCs, the number of bacteria operational taxonomic units (OTUs) detected in each sample ranged from 2572 to 3157. Proteobacteria, Cyanobacteria, Bacteroidetes were dominant in BSCs, followed by Firmicutes, Acidobacteria, and Actinobacteria. At the successional stages of BSCs, bacterial communities, OTU composition and their relative abundance notably differentiated, and Cyanobacteria, especially Microcoleus vaginatus, dominated algal crust and lichen crust, and were the main C-fixing bacteria in BSCs. Proteobacteria and Bacteroidetes increased with the development of BSCs. OTUs related to Planomicrobium Chinese, Desulfobulbus sp., Desulfomicrobium sp., Arthrobacter sp., and Ahhaerbacter sp. showed higher relative abundance in bare sand than other successional stages of BSCs, while relative abundance of Sphingomonas sp. Niastella sp., Pedobacter, Candidatus solobacter, and Streptophyta increased with the development of BSCs. In successional stages of BSCs, bacterial OTUs composition demonstrated strong correlations with soil nutrients, soil salts, and soil enzymes. Additionally, variation of bacterial composition led to different ecological function. In bare sand, some species were related with mineral metabolism or promoting plant growth, and in algal crust and lichen crust, C-fixing bacteria increased and accumulated C to the desert soil. In later developed stage of BSCs, bacteria related with decomposition of organic matter, such as Sphingomonas sp. Niastella sp., Pedobacter, and Candidatus solobacter increased. Therefore, bacterial community composition and their key ecological roles shifted to the development of BSCs.

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“…Some researches indicated that P. chinense and Arthrobacter spp. could be used as a promising plant growth promoter . Thus, appearance of P. Chinese and Arthrobacter spp.…”

Section: Discussionmentioning

confidence: 99%

Bacterial diversity and community along the succession of biological soil crusts in the Gurbantunggut Desert, Northern China

Zhang

Kong

et al. 2016

J. Basic Microbiol.

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“…Clustal Omega was used for multiple sequence alignment of sequences. Neighbor joining tree was constructed with complete deletion using bootstrapping at 10,000 bootstraps trials with Kimura-2 parameter using MEGA 6.0 software (Das and Tiwary 2013). The isolate P4 was finally identified as P. otitidis.…”

Section: Phylogenetic Analysis By 16s Rrna Gene Sequencesmentioning

confidence: 99%

Isolation and characterization of glycolipid biosurfactant produced by a Pseudomonas otitidis strain isolated from Chirimiri coal mines, India

Singh

Tiwary

2016

Bioresour. Bioprocess.

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Background: Biosurfactants (BSs) are amphipathic, surface active molecules produced by microorganisms and can reduce the surface tension and interfacial tension. The present study emphasizes the isolation and structural characterization of the BS produced by Pseudomonas otitidis P4.Results: An efficient BS producing bacterial strain isolated from the unexplored coal mining site of Chirimiri, India was identified as P. otitidis P4 based on morphological, biochemical and 16S rRNA gene sequence analysis. The surface tension of the culture medium was reduced from 71.18 to 33.4 mN/m. The surface tension and emulsification activity of the BS remained stable over a wide range of temperature, pH and salt concentrations indicating its scope of application in bioremediation, food, cosmetics, and pharmaceutical industries. Structural attributes of BS were determined by biochemical tests, thin layer chromatography (TLC), Fourier transform infrared (FTIR) and nuclear magnetic resonance ( 1 H NMR) spectroscopy analyses, which confirmed the glycolipid nature of BS. Lipid and sugar fractions were the main constituents of the extracted BS. Thermogravimetric (TG) and Differential scanning calorimetry (DSC) analyses showed the thermostable nature of BS. As determined from TGA graph, the degradation temperature of biosurfactant was found to be 280 °C while complete weight loss was observed after 450 °C. Conclusion:The BS isolated from P. otitidis P4 was identified as glycolipid and showed high emulsification activity and stability in a wide range of temperature, pH and salinity which makes it suitable for various industrial and environmental applications.

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“…as a hydrocarbon-degrading bacterium isolated from oil contaminated areas as well as from phyllospheres of various plant species [30][31][32]. Planomicrobium chinense DX-12 completely mineralized diesel oil within 96h and can use monoaromatic compounds such as bezene, toluene and xylene as source of C for growth [33]. Bacteria such as Planomicrobium alkanoclasticum strain MAE2 selectively degrade linear and branched alkanes, but cannot degrade aromatic hydrocarbons [34].…”

Section: Initial Biodegradation Of High Molecular Weight Pahsmentioning

confidence: 99%

Initial microbial degradation of polycyclic aromatic hydrocarbons

Milić¹,

Avdalović²,

Knudsen

et al. 2016

CI&CEQ

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Article Highlights • Bacterial PAH degradation was studied using 2,6-dichlorophenol-indophenol assay and GC analysis • Rhodococcus sp. RNP05 degraded 26.0% of pyrene and 89.6% of phenanthrene after 10 days • Planomicrobium sp. RNP01 degraded 5.2% of pyrene and 62.3% of phenanthrene after 10 days • Rhodococcus sp. RNP05 degraded a PAH mixture more efficiently than Planomicrobium sp. RNP01 • The bacteria are likely candidates for degradation of highly toxic PAHs in contaminated areas

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Isolation of a novel strain of Planomicrobium chinense from diesel contaminated soil of tropical environment

Cited by 27 publications

References 39 publications

Bacterial diversity and community along the succession of biological soil crusts in the Gurbantunggut Desert, Northern China

Bacterial diversity and community along the succession of biological soil crusts in the Gurbantunggut Desert, Northern China

Isolation and characterization of glycolipid biosurfactant produced by a Pseudomonas otitidis strain isolated from Chirimiri coal mines, India

Initial microbial degradation of polycyclic aromatic hydrocarbons

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