Journal of Microbiology

Journal Articles

Microbial transformation of Se oxyanions in cultures of Delftia lacustris grown under aerobic conditions: Shrutika L. Wadgaonkar , Yarlagadda V. Nancharaiah , Claus Jacob , Giovanni Esposito , Piet N. L. Lens; J. Microbiol. 2019;57(5):362-371. Published online March 21, 2019; DOI: https://doi.org/10.1007/s12275-019-8427-x

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Delftia lacustris is reported for the first time as a selenate and selenite reducing bacterium, capable of tolerating and growing in the presence of ≥ 100 mM selenate and 25 mM selenite. The selenate reduction profiles of D. lacustris were investigated by varying selenate concentration, inoculum size, concentration and source of organic electron donor in minimal salt medium. Interestingly, the bacterium was able to reduce both selenate and selenite under aerobic conditions. Although considerable removal of selenate was observed at all concentrations investigated, D. lacustris was able to completely reduce 0.1 mM selenate within 96 h using lactate as the carbon source. Around 62.2% unaccounted selenium (unidentified organo-selenium compounds), 10.9% elemental selenium and 26.9% selenite were determined in the medium after complete reduction of selenate. Studies of the enzymatic activity of the cell fractions show that the selenite/selenate reducing enzymes were intracellular and independent of NADPH availability. D. lacustris shows an unique metabolism of selenium oxyanions to form elemental selenium and possibly also selenium ester compounds, thus a potential candidate for the remediation of selenium-contaminated wastewaters in aerobic environments. This novel finding will advance the field of bioremediation of selenium-contaminated sites and selenium bio-recovery and the production of potentially beneficial organic and inorganic reactive selenium species.

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Efficient recovery of heavy metals and selenium from wastewater using granular sludge: The crucial role of glutathione (GSH)
Zhanfei He, Jingxun Gao, Xin Chen, Yulong Ru, Daoyong Zhang, Xiangliang Pan
Water Research.2025; 270: 122826. CrossRef
Laundry Isolate Delftia sp. UBM14 Capable of Biodegrading Industrially Relevant Aminophosphonates
Ramona Riedel, Karsten Meißner, Arne Kaschubowski, Dirk Benndorf, Marion Martienssen, Burga Braun
Microorganisms.2024; 12(8): 1664. CrossRef
Foliar application of microbial nano-selenium enhances selenium uptake and alleviates oxidative stress
Fang Ma, Lichen Yang, Tiantian Zhao, Yongqiang Yuan, Shixue Zheng
The Microbe.2024; 4: 100147. CrossRef
Biogenic selenium nanoparticles with antifungal activity against the wood-rotting fungus Oligoporus pelliculosus
Micaela Pescuma, Francisca Aparicio, Roberto D. Zysler, Enio Lima, Claudia Zapata, Jorge A. Marfetán, M.Laura Vélez, Omar F. Ordoñez
Biotechnology Reports.2023; 37: e00787. CrossRef
Selenite bioreduction by a consortium of halophilic/halotolerant bacteria and/or yeasts in saline media
Elham Lashani, Hamid Moghimi, Raymond J Turner, Mohammad Ali Amoozegar
Environmental Pollution.2023; 331: 121948. CrossRef
Leucobacter coleopterorum sp. nov., Leucobacter insecticola sp. nov., and Leucobacter viscericola sp. nov., isolated from the intestine of the diving beetles, Cybister brevis and Cybister lewisianus, and emended description of the genus Leucobacter
Dong-Wook Hyun, Hojun Sung, Pil Soo Kim, Ji-Hyun Yun, Jin-Woo Bae
Journal of Microbiology.2021; 59(4): 360. CrossRef
Enrichment and characterization of an effective hexavalent chromium-reducing microbial community YEM001
Yucai Lyu, Tao Yang, Herong Liu, Zheng Qi, Ping Li, Ziyao Shi, Zhen Xiang, Dachun Gong, Ning Li, Yaoping Zhang
Environmental Science and Pollution Research.2021; 28(16): 19866. CrossRef
Se transformation and removal by a cattail litter treatment system inoculated with sulfur-based denitrification sludge: Role of the microbial community composition under various temperature and aeration conditions
Chuanqi Zhou, Zi-Jing Wang, Jung-Chen Huang, Lixin Zheng, Xinyu Gan, Manping Zhang, Shengbing He, Weili Zhou
Journal of Hazardous Materials.2021; 420: 126617. CrossRef
Diorganyl Diselenides and Iron(III) Chloride Drive the Regio- and Stereoselectivity in the Selenation of Ynamides
Tales A. C. Goulart, Davi Fernando Back, Sidnei Moura E. Silva, Gilson Zeni
The Journal of Organic Chemistry.2021; 86(1): 980. CrossRef
Reduction of selenite to elemental Se(0) with simultaneous degradation of phenol by co-cultures of Phanerochaete chrysosporium and Delftia lacustris
Samayita Chakraborty, Eldon R. Rene, Piet N. L. Lens
Journal of Microbiology.2019; 57(9): 738. CrossRef

Potential use of lactic acid bacteria Leuconostoc mesenteroides as a probiotic for the removal of Pb(II) toxicity: Young-Joo Yi , Jeong-Muk Lim , Suna Gu , Wan-Kyu Lee , Eunyoung Oh , Sang-Myeong Lee , Byung-Taek Oh; J. Microbiol. 2017;55(4):296-303. Published online March 31, 2017; DOI: https://doi.org/10.1007/s12275-017-6642-x

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Abstract

It has been demonstrated that certain lactic acid bacteria (LAB) can sequester metal ions by binding them to their surfaces. In the present study, lead (Pb)-resistant LAB were isolated from kimchi, a Korean fermented food. A total of 96 different LAB strains were isolated, and 52 strains showed lead resistance. Among them, an LAB strain-96 (L-96) iden-tified as Leuconostoc mesenteroides showed remarkable Pb resistance and removal capacity. The maximum adsorption capacity of this strain calculated using the Langmuir isotherm was 60.6 mg Pb/g. In an in vivo experiment, young male mice were provided with water (A), Pb-water (B), or Pb-water+ L-96 (C) during puberty. Lower glutamate oxaloacetate trans-aminase (GOT) and glutamate pyruvate transaminase (GPT) levels in Pb-exposed male mice that received strain L-96 as a probiotic were suggestive of reduced hepatotoxicity. More-over, feces from mice treated with L-96 contained more Pb than feces from untreated mice. Increased Pb elimination likely reduced internal accumulation, and this hypothesis was supported by significantly lower Pb concentrations in kid-neys and testes of the mice treated with strain L-96. The mo-tility and ATP content of epididymal spermatozoa were par-tially restored if strain L-96 was administered. In conclusion, isolated L-96 LAB had lead-biosorption activity and effi-ciently detoxified lead-poisoned male mice, resulting in re-covering male reproductive function. These results suggest the potential use of LAB as a probiotic to protect humans from the adverse effects of Pb exposure.

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Research Support, Non-U.S. Gov'ts

Microbial communities inhabiting oil-contaminated soils from two major oilfields in Northern China: Implications for active petroleum-degrading capacity: Weimin Sun , Yiran Dong , Pin Gao , Meiyan Fu , Kaiwen Ta , Jiwei Li; J. Microbiol. 2015;53(6):371-378. Published online May 30, 2015; DOI: https://doi.org/10.1007/s12275-015-5023-6

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Abstract

Although oilfields harbor a wide diversity of microorganisms with various metabolic potentials, our current knowledge about oil-degrading bacteria is limited because the vast majority of oil-degrading bacteria remain uncultured. In the present study, microbial communities in nine oil-contaminated soils collected from Daqing and Changqing, two of the largest oil fields in China, were characterized through highthroughput sequencing of 16S rRNA genes. Bacteria related to the phyla Proteobacteria and Actinobacteria were dominant in four and three samples, respectively. At the genus level, Alkanindiges, Arthrobacter, Pseudomonas, Mycobacterium, and Rhodococcus were frequently detected in nine soil samples. Many of the dominant genera were phylogenetically related to the known oil-degrading species. The correlation between physiochemical parameters within the microbial communities was also investigated. Canonical correspondence analysis revealed that soil moisture, nitrate, TOC, and pH had an important impact in shaping the microbial communities of the hydrocarbon-contaminated soil. This study provided an in-depth analysis of microbial communities in oilcontaminated soil and useful information for future bioremediation of oil contamination.

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Field scale biodegradation of total petroleum hydrocarbons and soil restoration by Ecopiles: microbiological analysis of the process
Ruben Martínez-Cuesta, Robert Conlon, Mutian Wang, Esther Blanco-Romero, David Durán, Miguel Redondo-Nieto, David Dowling, Daniel Garrido-Sanz, Marta Martin, Kieran Germaine, Rafael Rivilla
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Degradation of Long-Chain Alkanes Through Biofilm Formation by Bacteria Isolated from Oil-Polluted Soil
Kevin Iyere Ehiosun, Simon Godin, Laurent Urios, Ryszard Lobinski, Régis Grimaud
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Spatial distribution, composition, and source analysis of petroleum pollutants in soil from the Changqing Oilfield, Northwest China
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Bibliometric Analysis of Current Status on Bioremediation of Petroleum Contaminated Soils during 2000–2019
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Molecular characterization of bacterial communities of two neotropical tick species (Amblyomma aureolatum and Ornithodoros brasiliensis) using rDNA 16S sequencing
Bruno Dall'Agnol, John Anthony McCulloch, Fabiana Quoos Mayer, Ugo Souza, Anelise Webster, Paola Antunes, Rovaina Laureano Doyle, José Reck, Carlos Alexandre Sanchez Ferreira
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Role of Heavy Metal Resistant Ochrobactrum sp. and Bacillus spp. Strains in Bioremediation of a Rice Cultivar and Their PGPR Like Activities: Sanjeev Pandey , Pallab Kumar Ghosh , Sisir Ghosh , Tarun Kumar De , Tushar Kanti Maiti; J. Microbiol. 2013;51(1):11-17. Published online March 2, 2013; DOI: https://doi.org/10.1007/s12275-013-2330-7

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Abstract: The present study demonstrates the metal toxicity ameliorating and growth promoting abilities of three different bacterial isolates when applied to rice as host plant. The three bacterial strains included a cadmium resistant Ochrobactrum sp., a lead resistant Bacillus sp. and an arsenic resistant Bacillus sp. designated as CdSP9, PbSP6, and AsSP9, respectively. When these isolates were used as inocula applied to metaltreated rice plants of variety Satabdi, the germination percentage, relative root elongation (RRE), amylase and protease activities were increased. The toxic effect of metal was reduced in presence of these bacteria. The overall biomass and root/shoot ratio were also enhanced by bacterial inoculation. Hydroponic studies showed that the superoxide dismutase (SOD) activity and malondialdehyde (MDA) level, which had been increased in the presence of metal stress in rice roots, were lowered by the bacterial inoculation. In addition, all three strains were 1-aminocyclopropane-1-carboxylate (ACC) deaminase and catalase positive, whereas siderophore producing ability was lacking in PbSP6. However, both PbSP6 and AsSP9 were protease positive and could hydrolyse starch. The data indicate that these bacteria have promise for bioremediation as well as for plant growth promotion.

Review

Minireview] Alpine Microorganisms: Useful Tools for Low-Temperature Bioremediation: Rosa Margesin; J. Microbiol. 2007;45(4):281-285.; DOI: https://doi.org/2572 [pii]

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Abstract: Cold environments, including polar and alpine regions, are colonized by a wide diversity of microorganisms able to thrive at low temperatures. There is evidence of a wide range of metabolic activities in alpine cold ecosystems. Like polar microorganisms, alpine microorganisms play a key ecological role in their natural habitats for nutrient cycling, litter degradation, and many other processes. A number of studies have demonstrated the capacity of alpine microorganisms to degrade efficiently a wide range of hydrocarbons, including phenol, phenol-related compounds and petroleum hydrocarbons, and the feasibility of low-temperature bioremediation of European alpine soils by stimulating the degradation capacity of indigenous microorganisms has also been shown.

Research Support, Non-U.S. Gov't

Enhancing the Intrinsic Bioremediation of PAH-Contaminated Anoxic Estuarine Sediments with Biostimulating Agents: Quang-Dung Bach , Sang-Jin Kim , Sung-Chan Choi , Young-Sook Oh; J. Microbiol. 2005;43(4):319-324.; DOI: https://doi.org/2259 [pii]

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Abstract: Estuarine sediments are frequently polluted with hydrocarbons from fuel spills and industrial wastes. Polycyclic aromatic hydrocarbons (PAHs) are components of these contaminants that tend to accumulate in the sediment due to their low aqueous solubility, low volatility, and high affinity for particulate matter. The toxic, recalcitrant, mutagenic, and carcinogenic nature of these compounds may require aggressive treatment to remediate polluted sites effectively. In petroleum-contaminated sediments near a petrochemical industry in Gwangyang Bay, Korea, in situ PAH concentrations ranged from 10 to 2,900 ug/kg dry sediment. To enhance the biodegradation rate of PAHs under anaerobic conditions, sediment samples were amended with biostimulating agents alone or in combination: nitrogen and phosphorus in the form of slow-release fertilizer (SRF), lactate, yeast extract (YE), and Tween 80. When added to the sediment individually, all tested agents enhanced the degradation of PAHs, including naphthalene, acenaphthene, anthracene, fluorene, phenanthrene, fluoranthene, pyrene, chrysene, and benzo[a]pyrene. Moreover, the combination of SRF, Tween 80, and lactate increased the PAH degradation rate 1.2-8.2 times above that of untreated sediment (0.01-10 ug PAH/kg dry sediment/day). Our results indicated that in situ contaminant PAHs in anoxic sediment, including high molecular weight PAHs, were degraded biologically and that the addition of stimulators increased the biodegradation potential of the intrinsic microbial populations. Our results will contribute to the development of new strategies for in situ treatment of PAH-contaminated anoxic sediments.

Reduction of hexavalent chromium by pseudomonas aeruginosa HP014: Oh, Young Sook , choi, Sung Chan; J. Microbiol. 1997;35(1):25-29.

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Abstract: Microbial reduction of hexavalent (VI) to trivalent (III) chromium decreases its toxicity by two orders of magnitude. In order to investigate the nature of Cr-reduction, Cr-resistant Pseudomonas aeruginosa HP014 was isolated and tested for its reduction capability. At the concentration of 0.5 mM Cr(VI), cell growth was not inhibited by the presence of Cr(VI) in a liquid medium, and Cr(VI) reduction was accompanied by ell growth. When cell-free extract was tested, the reduction of Cr(VI) showed a saturation kinetics with the maximum specific activity of 0.33 umol min^-1 mg^-1 cell protein, and an apparent K. of 1.73 mM Cr(VI). The activity required either NADH or NADPH as an electron donor. However, NADPH gave 50% as much activity as NADH. To locate the reductase activity, cell free extract was centrifuged at 150,000×g, and subsequently the supernatant and pelleted membrane fractions were tested for Cr(VI) reduction activity. The supernatant of the centrifugation showed almost the same Cr(VI) reduction activity as compared with that of the cell-free extract, indicating that the Cr(VI)-reducing activity of P. aeruginosa HP-14 is due to soluble enzyme. Moreover, the activity appeared to be the highest among the known activities, suggesting that the strain might be useful for remediation of Cr(VI)-contaminated sites.

Characterization of BTX-degrading bacteria and identification of substrate interactions during their degradation: Oh, Young Sook , Choi, Sung Chan; J. Microbiol. 1997;35(3):193-199.

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Abstract: From several industrial wastewaters, 14 bacterial strains which degrade benzene, toluene, o-xylene, m-xylene, or p-xylene (BTX) were obtained. These strains were characterized as to their species composition and the substrate range, kinetic parameters and the substrate interactions were investigated. Although BTX components have a similar chemical structure, isolated strains showed different substrate ranges and kinetic parameters. None of the strains could degrade all of BTX components and most of them showed an inhibition (Haldane) kinetics on BTX, BTX mixtures were removed under inhibitory substrate interactions with variation in the intensity of inhibition. For a complete degradation of BTX, a defined mixed culture containing three different types of pathways was constructed and all of the BTX components were simultaneously degraded with the total removal rate of 225.69 mg/g biomass/h Judging from the results, the obtained mixed culture seems to be useful for the treatment of BTX-contaminated wastewater or groundwater as well as for the removal of BTX from the contaminated air stream.

Isolation and Identification of a Pentachloronitrobenzene (PCNB) Degrading Bacterium Alcaligenes xylosoxidans PCNB-2 from Agricultural Soil: Sung-Kyu Shin , Jang-Eok Kim , Gi-Seok Kwon , Jin-Wook Kwon , Eun-Taex Oh , Jae-Seong So , Sung-Cheol Koh; J. Microbiol. 2003;41(2):165-168.

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Abstract: We report a new PCNB-degrading strain (PCNB-2) that is able to utilize and grow on PCNB (100 ppm) as a sole carbon source. This strain was identified as Alcaligenes xylosoxidans based upon 16S rDNA sequence analysis, API 20 NE tests and cell membrane lipid analysis. The new PCNB degrader Alcali-genes xylosoxidans PCNB-2 could find use in bioremediation of PCNB, which is environmentally persistent.

Treatability Tests for the Bioremediation of Unsanitary Landfill Waste Soils: Sung-Chan Choi , Youn-Hee Lee , Young-Sook Oh; J. Microbiol. 2003;41(2):169-173.

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Abstract: A treatability investigation was conducted to determine if landfarming would be effective for the remediation of unsanitary landfill waste soils. Calculations based on biodegradable organic carbon contents and initial CO_2 evolution rates revealed that landfarming has a high potential for landfill site remediation and that the optimum strategy for bioremediation is site-specific.

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