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Sarvepalli M, Velidandi A, Korrapati N. Optimization of Siderophore Production in Three Marine Bacterial Isolates along with Their Heavy-Metal Chelation and Seed Germination Potential Determination. Microorganisms 2023; 11:2873. [PMID: 38138017 PMCID: PMC10746010 DOI: 10.3390/microorganisms11122873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 11/24/2023] [Accepted: 11/26/2023] [Indexed: 12/24/2023] Open
Abstract
Siderophores are low-molecular-weight and high-affinity molecules produced by bacteria under iron-limited conditions. Due to the low iron (III) (Fe+3) levels in surface waters in the marine environment, microbes produce a variety of siderophores. In the current study, halophilic bacteria Bacillus taeanensis SMI_1, Enterobacter sp., AABM_9, and Pseudomonas mendocina AMPPS_5 were isolated from marine surface water of Kalinga beach, Bay of Bengal (Visakhapatnam, Andhra Pradesh, India) and were investigated for siderophore production using the Chrome Azurol S (CAS) assay. The effect of various production parameters was also studied. The optimum production of siderophores for SMI_1 was 93.57% siderophore units (SU) (after 48 h of incubation at 30 °C, pH 8, sucrose as carbon source, sodium nitrate as nitrogen source, 0.4% succinic acid), and for AABM_9, it was 87.18 %SU (after 36 h of incubation period at 30 °C, pH 8, in the presence of sucrose, ammonium sulfate, 0.4% succinic acid). The maximum production of siderophores for AMPPS_5 was 91.17 %SU (after 36 h of incubation at 35 °C, pH 8.5, glucose, ammonium sulfate, 0.4% citric acid). The bacterial isolates SMI_1, AABM_9, and AMPPS_5 showed siderophore production at low Fe+3 concentrations of 0.10 µM, 0.01 µM, and 0.01 µM, respectively. The SMI_1 (73.09 %SU) and AMPPS_5 (68.26 %SU) isolates showed siderophore production in the presence of Zn+2 (10 µM), whereas AABM_9 (50.4 %SU) exhibited siderophore production in the presence of Cu+2 (10 µM). Additionally, these bacterial isolates showed better heavy-metal chelation ability and rapid development in seed germination experiments. Based on these results, the isolates of marine-derived bacteria effectively produced the maximum amount of siderophores, which could be employed in a variety of industrial and environmental applications.
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Affiliation(s)
| | | | - Narasimhulu Korrapati
- Department of Biotechnology, National Institute of Technology Warangal, Warangal 506004, Telangana, India; (M.S.); (A.V.)
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Bahaloo-Horeh N, Mousavi SM. A novel green strategy for biorecovery of valuable elements along with enrichment of rare earth elements from activated spent automotive catalysts using fungal metabolites. JOURNAL OF HAZARDOUS MATERIALS 2022; 430:128509. [PMID: 35739687 DOI: 10.1016/j.jhazmat.2022.128509] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 01/25/2022] [Accepted: 02/15/2022] [Indexed: 06/15/2023]
Abstract
Metals recovery from spent automotive catalytic converters (SACCs) has gained great attention due to high metal content of SACCs and their potential to pollute the environment. This study presented a novel green strategy for treating SACCs using oxalic acid-enriched spent culture medium from Aspergillus niger cultivations. To enhance oxalic acid production, the Central Composite Design (CCD) was applied, which demonstrated that glucose (27.06 g/L), NaNO3 (0.9 g/L), disodium oxalate (7.7 g/L), MnSO4·H2O (0.28 g/L), and ethanol (0.65%(v/v)) were the optimum values leading to production of 15.3 g/L oxalic acid. The results of metals biorecovery with the fungal metabolites showed that pulp density of 15 g/L, temperature of 60 °C, and leaching time of 6 h resulted in the highest extraction of 99.1% Al, 99.3% Si, 82.2% Mn, 91.9% Zn, 17.6% Ba, 99.5% Fe, 92.2% Sr, 35.7% Ti, 60.9% Pt, and 73.7% Pd, as well as maximum enrichment of rare earth elements (REEs) in the residual powder. The EDX-mapping analysis indicated that the concentration of ∑REEs was nearly 8% in the initial waste powder, while it reached around 81% in the residual powder after bioleaching. The bioleaching mechanism was further analyzed by characterizing the bioleaching residues through XRD, FTIR, and FESEM analyses.
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Affiliation(s)
- Nazanin Bahaloo-Horeh
- Biotechnology Group, Chemical Engineering Department, Tarbiat Modares University, Tehran, Iran
| | - Seyyed Mohammad Mousavi
- Biotechnology Group, Chemical Engineering Department, Tarbiat Modares University, Tehran, Iran; Modares Environmental Research Institute, Tarbiat Modares University, Tehran, Iran.
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Singh P, Khan A, Kumar R, Kumar R, Singh VK, Srivastava A. Recent developments in siderotyping: procedure and application. World J Microbiol Biotechnol 2020; 36:178. [PMID: 33128090 DOI: 10.1007/s11274-020-02955-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 10/27/2020] [Indexed: 12/31/2022]
Abstract
Siderophores are metal chelating secondary metabolites secreted by almost all organisms. Beside iron starvation, the ability to produce siderophores depends upon several other factors. Chemical structure of siderophore is very complex with vast structural diversity, thus the principle challenge involves its detection, quantification, purification and characterisation. Metal chelation is its most fascinating attribute. This metal chelation property is now forming the basis of its application as molecular markers, siderotyping tool for taxonomic clarification, biosensors and bioremediation agents. This has led researchers to develop and continuously modify previous techniques in order to provide accurate and reproducible methods of studying siderophores. Knowledge obtained via computational approaches provides a new horizon in the field of siderophore biosynthetic gene clusters and their interaction with various proteins/peptides. This review illustrates various techniques, bioinformatics tools and databases employed in siderophores' studies, the principle of analytical methods and their recent applications.
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Affiliation(s)
- Pratika Singh
- Department of Life Science, School of Earth, Biological and Environmental Sciences, Central University of South Bihar, Gaya, 824236, India
| | - Azmi Khan
- Department of Life Science, School of Earth, Biological and Environmental Sciences, Central University of South Bihar, Gaya, 824236, India
| | - Rakesh Kumar
- Department of Bioinformatics, School of Earth, Biological and Environmental Sciences, Central University of South Bihar, Gaya, 824236, India
| | - Ravinsh Kumar
- Department of Life Science, School of Earth, Biological and Environmental Sciences, Central University of South Bihar, Gaya, 824236, India
| | - Vijay Kumar Singh
- Department of Bioinformatics, School of Earth, Biological and Environmental Sciences, Central University of South Bihar, Gaya, 824236, India
| | - Amrita Srivastava
- Department of Life Science, School of Earth, Biological and Environmental Sciences, Central University of South Bihar, Gaya, 824236, India.
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Sinha AK, Parli Venkateswaran B, Tripathy SC, Sarkar A, Prabhakaran S. Effects of growth conditions on siderophore producing bacteria and siderophore production from Indian Ocean sector of Southern Ocean. J Basic Microbiol 2019; 59:412-424. [PMID: 30672596 DOI: 10.1002/jobm.201800537] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 12/20/2018] [Accepted: 12/29/2018] [Indexed: 11/06/2022]
Abstract
Iron is an important element for growth and metabolism of all marine organisms, including bacteria. Most (99.9%) of iron in oceans are bound to organic ligands like siderophores and siderophore-like compounds. Distribution of bioavailable iron mainly depends on pH and temperature of the ocean. Due to global warming and ocean acidification, bioavailability of iron may alter and in turn effect the response of marine bacteria. In this study, we investigated the effect of growth conditions like pH, temperature, and iron (III) concentrations on growth and siderophore production in selected heterotrophic bacteria isolated from waters around Kerguelen Islands (KW) and Prydz Bay (PB). Microcosm experiments were carried out on two KW-isolates (Enterococcus casseliflavus and Psychrobacter piscatorii) and five PB-isolates (Pseudoalteromonas tetraodonis, Bacillus cereus, Psychrobacter pocilloporae, Micrococcus aloeverae, and Pseudomonas weihenstephanensis) which produced either hydroxamate-type or catecholate-type siderophores. Increasing iron concentrations (10 nM to 50 μM) increased the growth rate of all isolates while siderophore production (% siderophore) generally reduced at higher iron concentration. Siderophore production peaked at early log phase, probably in response to higher iron-demand. Temperature and pH experiments showed that most isolates produced more siderophore at 15 and 25 °C temperature and pH 8.5. These results reveal that in future ocean conditions (warmer and acidified waters), bacterial growth and siderophore production may get affected and thereby influencing iron uptake and associated biogeochemical processes.
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Affiliation(s)
- Alok K Sinha
- National Centre for Polar and Ocean Research, Vasco da Gama, Goa, India
| | | | - Sarat C Tripathy
- National Centre for Polar and Ocean Research, Vasco da Gama, Goa, India
| | - Amit Sarkar
- Kuwait Institute for Scientific Research, Safat, Kuwait
| | - Sabu Prabhakaran
- National Centre for Polar and Ocean Research, Vasco da Gama, Goa, India
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Plant Growth Promoting Rhizobacteria (PGPR) - Prospective and Mechanisms: A Review. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2018. [DOI: 10.22207/jpam.12.2.34] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
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Bajpai A, Singh B, Joshi S, Johri BN. Production and Characterization of an Antifungal Compound from Pseudomonas protegens Strain W45. ACTA ACUST UNITED AC 2017. [DOI: 10.1007/s40011-017-0844-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Khasheii B, Anvari S, Jamalli A. Frequency evaluation of genes encoding siderophores and the effects of different concentrations of Fe ions on growth rate of uropathogenic Escherichia coli. IRANIAN JOURNAL OF MICROBIOLOGY 2016; 8:359-365. [PMID: 28491245 PMCID: PMC5420389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/29/2022]
Abstract
BACKGROUND AND OBJECTIVES Bacteria need iron for growth and most of them can actively acquire Fe ions using especial iron-chelating proteins which named siderophores. We aimed to determine the frequencies of iucA, iroN and irp2 genes in the uropathogenic Escherichia coli (UPEC) isolates. We also analyzed the effects of siderophore genes beside iron supplements on growth rate of the isolates. MATERIALS AND METHODS Totally, 170 E. coli strains were isolated from urinary tract infections and the presence of 3 siderophore genes were analyzed using PCR among them. Three final concentrations of 0.1, 0.5 and 1 mMFe(II) and Fe(III) ions were made in M9 broth medium. Inoculated cultures were incubated at 37°C for 33 hours and bacterial density in the suspension was measured with 1 hour intervals using spectrophotometer. RESULTS The frequency of iucA, iroN and irp2 genes among 170 UPEC isolates were 29 (17.1%), 52 (30.6%) and 116 (68.2%), respectively. In addition, Our findings showed that Fe(II) supplements had significantly higher promoting effects on UPEC growth rate almost in all of the three applied concentrations (0.1, 0.5 and 1 mM) compared to the control group (P<0.0001). Differences between Fe(III) supplemented groups and the controls were statistically significant when 1 mM concentration was added into the medium (p<0.05). CONCLUSION irp2 gene probably plays a major role in the pathogenesis of UPEC strains. Promoting or inhibitory effects of iron on bacterial growth mainly depend on the iron concentration in the culture medium however different siderophores have different potentials for capturing and assimilation of Fe ions by the bacteria, especially inside the host cell.
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Affiliation(s)
- Behnoush Khasheii
- Faculty of Medicine, Golestan University of Medical Sciences, Gorgan, Iran
| | - Shaghayegh Anvari
- Infectious Diseases Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Ailar Jamalli
- Infectious Diseases Research Center, Golestan University of Medical Sciences, Gorgan, Iran,Corresponding author: Ailar Jamalli, PhD, Infectious Diseases Research Center, Golestan University of Medical Sciences, Gorgan, Iran. Tel: +98171 4421651, Fax: +9832440225,
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Chávez-Ambriz LA, Hernández-Morales A, Cabrera-Luna JA, Luna-Martínez L, Pacheco-Aguilar JR. [Bacillus isolates from rhizosphere of cacti improve germination and bloom in Mammillaria spp. (Cactaceae)]. Rev Argent Microbiol 2016; 48:333-341. [PMID: 27876169 DOI: 10.1016/j.ram.2016.09.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 05/18/2016] [Accepted: 09/08/2016] [Indexed: 11/29/2022] Open
Abstract
Cacti are the most representative vegetation of arid zones in Mexico where rainfall is scarce, evapotranspiration is high and soil fertility is low. Plants have developed physiological strategies such as the association with microorganisms in the rhizosphere zone to increase nutrient uptake. In the present work, four bacterial isolates from the rhizosphere of Mammillaria magnimamma and Coryphantha radians were obtained and named as QAP3, QAP19, QAP22 and QAP24, and were genetically identified as belonging to the genus Bacillus, exhibiting in vitro biochemical properties such as phosphate solubilization, indoleacetic acid production and ACC deaminase activity related to plant growth promotion, which was tested by inoculating M. magnimamma seeds. It was found that all isolates increased germination from 17 to 34.3% with respect to the uninoculated control seeds, being QAP24 the one having the greatest effect, accomplishing the germination of viable seeds (84.7%) three days before the control seeds. Subsequently, the inoculation of Mammillari zeilmanniana plants with this isolate showed a positive effect on bloom, registering during two months from a one year period, an increase of up to 31.0% in the number of flowering plants compared to control plants. The characterized Bacillus spp. isolates have potential to be used in conservation programs of plant species from arid zones.
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Affiliation(s)
- Lluvia A Chávez-Ambriz
- Laboratorio de Plantas y Biotecnología Agrícola, Facultad de Química, Universidad Autónoma de Querétaro, Querétaro, México
| | - Alejandro Hernández-Morales
- Unidad Académica Multidisciplinaria Zona Huasteca, Universidad Autónoma de San Luis Potosí, San Luis Potosí, México
| | - José A Cabrera-Luna
- Herbario Dr. Jerzy Rzedowski, Facultad de Ciencias Naturales, Universidad Autónoma de Querétaro, Querétaro, México
| | - Laura Luna-Martínez
- Laboratorio de Plantas y Biotecnología Agrícola, Facultad de Química, Universidad Autónoma de Querétaro, Querétaro, México
| | - Juan R Pacheco-Aguilar
- Laboratorio de Plantas y Biotecnología Agrícola, Facultad de Química, Universidad Autónoma de Querétaro, Querétaro, México.
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Shaikh SS, Wani SJ, Sayyed RZ. Statistical-based optimization and scale-up of siderophore production process on laboratory bioreactor. 3 Biotech 2016; 6:69. [PMID: 28330140 PMCID: PMC4754294 DOI: 10.1007/s13205-016-0365-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 01/08/2016] [Indexed: 11/13/2022] Open
Abstract
We report the enhanced production of siderophore in succinate medium by applying two-stage statistical approach, i.e., Plackett–Burman design and response surface methodology (RSM) using central composite design (CCD). In the first stage of optimization, out of 11 variable components of succinate medium, succinic acid, pH and temperature were found as significant components that influenced the siderophore production in Pseudomonas aeruginosa RZS9. The second stage of RSM using CCD consisted of optimizing the concentrations of the variables. Here, 0.49 g/100 ml concentration of succinic acid, pH 7.08 and temperature of 27.80 °C yielded the maximum (68.41 %) siderophore units. All the significant components exhibited quadratic effect on siderophore production. The F value of 28.63, multiple correlation coefficient (R2) of 0.9626, percent coefficient of variation of 8.81 values indicated that the model was significant and that the experimental data was satisfactorily adjusted to the quadratic model. During validation of these experiments, 6.10 % increase in siderophore yield was obtained. Scale-up of this protocol optimized at shake flask level up to 5 L-capacity reactor further enhanced the siderophore yield. We claim it to be the first report on statistical optimization of siderophore production by P. aeruginosa RZS9.
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Pluháček T, Lemr K, Ghosh D, Milde D, Novák J, Havlíček V. Characterization of microbial siderophores by mass spectrometry. MASS SPECTROMETRY REVIEWS 2016; 35:35-47. [PMID: 25980644 DOI: 10.1002/mas.21461] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Accepted: 12/19/2014] [Indexed: 05/28/2023]
Abstract
Siderophores play important roles in microbial iron piracy, and are applied as infectious disease biomarkers and novel pharmaceutical drugs. Inductively coupled plasma and molecular mass spectrometry (ICP-MS) combined with high resolution separations allow characterization of siderophores in complex samples taking advantages of mass defect data filtering, tandem mass spectrometry, and iron-containing compound quantitation. The enrichment approaches used in siderophore analysis and current ICP-MS technologies are reviewed. The recent tools for fast dereplication of secondary metabolites and their databases are reported. This review on siderophores is concluded with their recent medical, biochemical, geochemical, and agricultural applications in mass spectrometry context.
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Affiliation(s)
- Tomáš Pluháček
- Department of Analytical Chemistry, Faculty of Science, Regional Centre of Advanced Technologies and Materials, Palacky University, 17. listopadu 12, 771 46, Olomouc, Czech Republic
- Institute of Microbiology, AS CR v.v.i., Videnska 1083, CZ 142 20, Prague 4, Czech Republic
| | - Karel Lemr
- Department of Analytical Chemistry, Faculty of Science, Regional Centre of Advanced Technologies and Materials, Palacky University, 17. listopadu 12, 771 46, Olomouc, Czech Republic
- Institute of Microbiology, AS CR v.v.i., Videnska 1083, CZ 142 20, Prague 4, Czech Republic
| | - Dipankar Ghosh
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi, 110067, India
| | - David Milde
- Department of Analytical Chemistry, Faculty of Science, Regional Centre of Advanced Technologies and Materials, Palacky University, 17. listopadu 12, 771 46, Olomouc, Czech Republic
| | - Jiří Novák
- Institute of Microbiology, AS CR v.v.i., Videnska 1083, CZ 142 20, Prague 4, Czech Republic
| | - Vladimír Havlíček
- Department of Analytical Chemistry, Faculty of Science, Regional Centre of Advanced Technologies and Materials, Palacky University, 17. listopadu 12, 771 46, Olomouc, Czech Republic
- Institute of Microbiology, AS CR v.v.i., Videnska 1083, CZ 142 20, Prague 4, Czech Republic
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Boda SK, Pandit S, Garai A, Pal D, Basu B. Bacterial siderophore mimicking iron complexes as DNA targeting antimicrobials. RSC Adv 2016. [DOI: 10.1039/c6ra02603f] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Microbial secretion of siderophores for iron uptake can be employed as an efficient strategy to smuggle in bactericidal agents by conjugation to iron.
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Affiliation(s)
- Sunil Kumar Boda
- Laboratory for Biomaterials – Materials Research Centre
- Indian Institute of Science
- Bangalore – 560012
- India
| | - Subhendu Pandit
- Laboratory for Biomaterials – Materials Research Centre
- Indian Institute of Science
- Bangalore – 560012
- India
| | - Aditya Garai
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore – 560012
- India
| | - Debnath Pal
- Department of Computational and Data Sciences
- Indian Institute of Science
- Bangalore – 560012
- India
| | - Bikramjit Basu
- Laboratory for Biomaterials – Materials Research Centre
- Indian Institute of Science
- Bangalore – 560012
- India
- Centre for Biosystems Science and Engineering
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12
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Ren G, Jin Y, Zhang C, Gu H, Qu J. Characteristics of Bacillus sp. PZ-1 and its biosorption to Pb(II). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2015; 117:141-148. [PMID: 25855213 DOI: 10.1016/j.ecoenv.2015.03.033] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 03/18/2015] [Accepted: 03/29/2015] [Indexed: 06/04/2023]
Abstract
During the long and cold winter season in northern area of China, wastewater treatment is often inefficient which causes the substandard discharge. In this study, a lead-resistant psychrotrophilic bacterium was isolated and used as an adsorbent to remove Pb(II) from aqueous solution at 15 °C. The strain was identified and designated as Bacillus sp. PZ-1 based on the morphology, physiological-biochemical experiments and 16S rDNA sequence analysis. The minimal inhibitory concentration and antibiotic experiments revealed that PZ-1 had high resistance to 1500 mg L(-1) of Zn(II), 800 mg L(-1) of Cu(II), 400 mg L(-1) of Ni(II), 15 µg mL(-1) of chloramphenicol and 50 µg mL(-1) of streptomycin, but susceptibility to 200 mg L(-1) of Co(II). Scanning electron microscopy, energy dispersive X-ray spectroscopy and atomic force microscopy analyses showed that biosorption of Bacillus sp. PZ-1 to Pb(II) involved surface adsorption, ion exchange and micro-precipitate. Fourier transform infrared spectroscopy analyses indicated that hydroxyl, carbonyl and carboxyl on cells may play vital roles in Pb(II) adsorption. Besides, siderophore secreted by PZ-1 had beneficial impacts on the Pb(II) removal. Biosorption experiments were carried out as a function of initial Pb(II) concentration (50-500 mg L(-1)), pH (3.0-7.0), biomass concentration (5-50 g L(-1)) and contact time (5-40 min). Biosorption rate of 93.01% with adsorption capacity of 9.30 mg g(-1) was obtained under the initial Pb(II) concentration of 400 mg (-1), pH of 5.0, contact time of 20 min, biomass concentration of 40 g L(-1) and the temperature of 15 °C. The equilibrium data were well fitted with Langmuir model, which indicated the adsorption process of Pb(II) is monolayer adsorption. Bacillus sp. PZ-1 appeared to be an efficient biosorbent for removing Pb(II) from wastewater at low temperature.
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Affiliation(s)
- Guangming Ren
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin 150030, China
| | - Yu Jin
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin 150030, China
| | - Chunmiao Zhang
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin 150030, China
| | - Haidong Gu
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin 150030, China
| | - Juanjuan Qu
- College of Resources and Environmental Science, Northeast Agricultural University, Harbin 150030, China.
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Vyas P, Rahi P, Chadha BS, Gulati A. Statistical Optimization of Medium Components for Mass Production of Plant Growth-Promoting Microbial Inoculant Pseudomonas trivialis BIHB 745 (MTCC5336). Indian J Microbiol 2013; 54:239-41. [PMID: 25320429 DOI: 10.1007/s12088-013-0425-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Accepted: 08/04/2013] [Indexed: 11/29/2022] Open
Abstract
Optimizing nutritional requirements for mass production of microbial inoculants in shortened time has relevance for their economical field application. Therefore, the present study aimed at selecting suitable growth medium, optimizing its components, and up-scaling inoculum production for plant growth-promoting Pseudomonas trivialis BIHB 745. Of the different media tested, the culture exhibited maximal viable colony count in trypticase soya broth with 17.6 % increased biomass on optimizing levels of carbon source, nitrogen source, and NaCl using response surface methodology. A twofold higher biomass with 9 h shorter incubation period was obtained in optimized medium in a bioreactor in comparison to shake flasks.
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Affiliation(s)
- Pratibha Vyas
- Plant Pathology and Microbiology Laboratory, CSIR-Institute of Himalayan Bioresource Technology, P.O. Box No. 6, Palampur, 176 061 Himachal Pradesh India
| | - Praveen Rahi
- Plant Pathology and Microbiology Laboratory, CSIR-Institute of Himalayan Bioresource Technology, P.O. Box No. 6, Palampur, 176 061 Himachal Pradesh India
| | - B S Chadha
- Microbiology Department, Guru Nanak Dev University, Amritsar, 143 005 Punjab India
| | - Arvind Gulati
- Plant Pathology and Microbiology Laboratory, CSIR-Institute of Himalayan Bioresource Technology, P.O. Box No. 6, Palampur, 176 061 Himachal Pradesh India
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Sathish T, Prakasham RS. Intensification of Fructosyltransferases and Fructo-Oligosaccharides Production in Solid State Fermentation by Aspergillus awamori GHRTS. Indian J Microbiol 2013; 53:337-42. [PMID: 24426134 DOI: 10.1007/s12088-013-0380-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2012] [Accepted: 02/25/2013] [Indexed: 10/27/2022] Open
Abstract
The present work was aimed to investigate the impact of the solid substrates mixture on Fructosyltransferases (FTase) and Fructo-oligosaccharides (FOS) production. An augmented simplex lattice design was used to optimize a three component mixture for FTase production. Among selected substrates corn cobs has highest impact on FTase production followed by wheat bran and rice bran. All two substrates and three substrate combinations showed the highest enzyme production than their individual levels. Among the tested various models quadratic model was found to be the best suitable model to explain mixture design. Corncobs, wheat bran and rice bran in a ratio of approximately 45:29:26 is best suitable for the FTase production by isolated Aspergillus awamori GHRTS. This study signifies mixture design could be effective utilize for selection of best combination of multi substrate for improved production of high value products under solid state fermentation.
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Affiliation(s)
- Thadikamala Sathish
- Bioengineering and Environmental Centre, Indian Institute of Chemical Technology, Hyderabad, India ; Department of Marine Biotechnology, ANCOST, NIOT, Port-Blair, Andaman Nicobar Islands India
| | - Reddy Shetty Prakasham
- Bioengineering and Environmental Centre, Indian Institute of Chemical Technology, Hyderabad, India
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