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Gupta R, Khan F, Alqahtani FM, Hashem M, Ahmad F. Plant Growth-Promoting Rhizobacteria (PGPR) Assisted Bioremediation of Heavy Metal Toxicity. Appl Biochem Biotechnol 2024; 196:2928-2956. [PMID: 37097400 DOI: 10.1007/s12010-023-04545-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/11/2023] [Indexed: 04/26/2023]
Abstract
Due to a variety of natural and anthropogenic processes, heavy metal toxicity of soil constitutes a substantial hazard to all living beings in the environment. The heavy metals alter the soil properties, which directly or indirectly influence the agriculture systems. Thus, plant growth-promoting rhizobacteria (PGPR)-assisted bioremediation is a promising, eco-friendly, and sustainable method for eradicating heavy metals. PGPR cleans up the heavy metal-contaminated environment using various approaches including efflux systems, siderophores and chelation, biotransformation, biosorption, bioaccumulation, precipitation, ACC deaminase activity, biodegradation, and biomineralization methods. These PGPRs have been found effective to bioremediate the heavy metal-contaminated soil through increased plant tolerance to metal stress, improved nutrient availability in soil, alteration of heavy metal pathways, and by producing some chemical compounds like siderophores and chelating ions. Many heavy metals are non-degradable; hence, another remediation approach with a broader scope of contamination removal is needed. This article also briefly emphasized the role of genetically modified PGPR strains which improve the soil's degradation rate of heavy metals. In this regard, genetic engineering, a molecular approach, could improve bioremediation efficiency and be helpful. Thus, the ability of PGPRs can aid in heavy metal bioremediation and promote a sustainable agricultural soil system.
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Affiliation(s)
- Rishil Gupta
- Department of Botany, Aligarh Muslim University, Aligarh, 202002, U.P, India
| | - Faryad Khan
- Department of Botany, Aligarh Muslim University, Aligarh, 202002, U.P, India
| | - Fatmah M Alqahtani
- Department of Biology, College of Science, King Khalid University, Abha, 61413, Saudi Arabia
| | - Mohamed Hashem
- Department of Biology, College of Science, King Khalid University, Abha, 61413, Saudi Arabia
| | - Faheem Ahmad
- Department of Botany, Aligarh Muslim University, Aligarh, 202002, U.P, India.
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Deng Y, Fu S, Xu M, Liu H, Jiang L, Liu X, Jiang H. Purification and water resource circulation utilization of Cd-containing wastewater during microbial remediation of Cd-polluted soil. ENVIRONMENTAL RESEARCH 2023; 219:115036. [PMID: 36502910 DOI: 10.1016/j.envres.2022.115036] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 12/02/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
The purification and water resource circulation utilization of cadmium-containing leachate is a key link in the field application of microbial remediation in Cd-polluted soil. In this study, through a simulation experiment of microbial remediation of Cd-polluted paddy soil, the feasibility of the purification and recycling process of wastewater derived from microbial remediation of Cd-polluted soil was explored. The results of the microbial mobilization and removal experiment showed that the concentrations of Cd, N, P, and K in the leachate were 88.51 μg/L, 38.06, 0.53, and 98.87 mg/L, respectively. The leachate also contained a large number of microbial resources, indicating that it had high recovery values. To recycle this wastewater, activated carbon (C), humic acid (H), and self-assembled monolayers on mesoporous supports (SAMMS; S) were used as adsorbents. The results showed that the co-existing cations in the leachate had a major influence on the adsorption of Cd. In the ternary system of Fe, Al, and Cd, the removal efficiency of Cd increased to 91.2% when the S dosage was increased to 5‰, and the sorption of Cd occurred after Fe and Al. However, C and H exhibited poor adsorption performances. The isotherm models further showed that the maximum adsorption capacities of S, H, and C were 13.96, 6.41 and 2.94 mg/g, respectively. The adsorption kinetics of S showed that adsorption was a rapid process, and the C-H and O-Si-O of S were the key functional groups. The pH of the leachate significantly affected the adsorption efficiency of Cd. Finally, the purified leachate was successfully applied to microbial cultivation and soil remediation. Overall, the reclamation of Cd-containing wastewater can not only dampen the impacts of water shortages, but also achieve the purposes of Cd removal and resource recovery to lower costs by approximately 1166-3499 yuan per mu.
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Affiliation(s)
- Yan Deng
- Hunan Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, China; School of Minerals Processing and Bioengineering, Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha, 410083, China.
| | - Shaodong Fu
- School of Minerals Processing and Bioengineering, Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha, 410083, China
| | - Menglong Xu
- School of Minerals Processing and Bioengineering, Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha, 410083, China
| | - Hongwei Liu
- School of Minerals Processing and Bioengineering, Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha, 410083, China
| | - Luhua Jiang
- School of Minerals Processing and Bioengineering, Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha, 410083, China
| | - Xueduan Liu
- School of Minerals Processing and Bioengineering, Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha, 410083, China
| | - Huidan Jiang
- Hunan Agricultural Biotechnology Research Institute, Hunan Academy of Agricultural Sciences, Changsha, 410125, China.
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Danyal Y, Mahmood K, Ullah S, Rahim A, Raheem G, Khan AH, Ullah A. Phytoremediation of industrial effluents assisted by plant growth promoting bacteria. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:5296-5311. [PMID: 36402881 DOI: 10.1007/s11356-022-23967-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 10/29/2022] [Indexed: 06/16/2023]
Abstract
Industrialization plays a crucial role in the economic development of a country; however, the effluents produced as a byproduct generally contain toxic substances which are detrimental to living organisms. In this regard, it is essential to treat these toxic effluents before exposing them to the natural environment by selecting the most appropriate method accordingly. Several techniques are used to remediate industrial effluents including physical, chemical, and biological. Although some physical and chemical remediation technologies are of substantially important in remediation of industrial effluents, however, these technologies are either expensive to be applied by developing countries or not suitable for remediation of all kinds of effluents. In contrast, biological remediation is cost effective, nature friendly, and easy to use for almost all kinds of effluents. Among biological remediation strategies, phytoremediation is considered to be the most suitable method for remediation of industrial effluents; however, the phytoremediation process is slow, takes time in application and some effluents even affect plants growth and development. Alternately, plant microbe interactions could be a winning partner to remediate industrial effluents more efficiently. Among the microbes, plant growth promoting bacteria (PGPB) not only improve plant growth but also help in degradation, sequestration, volatilization, solubilization, mobilization, and bioleaching of industrial effluents which subsequently improve the phytoremediation process. The current study discusses the role of PGPB in enhancing the phytoremediation processes of industrial effluents.
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Affiliation(s)
- Youshaa Danyal
- Department of Botany, University of Malakand, Dir Lower, Chakdara, Khyber Pakhtunkhwa, Pakistan
| | - Kainat Mahmood
- Department of Botany, University of Malakand, Dir Lower, Chakdara, Khyber Pakhtunkhwa, Pakistan
| | - Shariat Ullah
- Department of Botany, University of Malakand, Dir Lower, Chakdara, Khyber Pakhtunkhwa, Pakistan
| | - Abdur Rahim
- Department of Zoology, University of Malakand, Dir Lower, Chakdara, Khyber Pakhtunkhwa, Pakistan
| | - Gul Raheem
- Department of Botany, University of Malakand, Dir Lower, Chakdara, Khyber Pakhtunkhwa, Pakistan
| | - Aamir Hamid Khan
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, Hubei, 430070, People's Republic of China
| | - Abid Ullah
- Department of Botany, University of Malakand, Dir Lower, Chakdara, Khyber Pakhtunkhwa, Pakistan.
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4
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Heavy metal resistant bacteria from coal dumping site with plant growth promoting potentials. Biologia (Bratisl) 2022. [DOI: 10.1007/s11756-021-00963-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Jayakumar A, Nair IC, Radhakrishnan EK. Environmental Adaptations of an Extremely Plant Beneficial Bacillus subtilis Dcl1 Identified Through the Genomic and Metabolomic Analysis. MICROBIAL ECOLOGY 2021; 81:687-702. [PMID: 33078238 DOI: 10.1007/s00248-020-01605-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 09/16/2020] [Indexed: 06/11/2023]
Abstract
Bacterial endophytes ubiquitously colonize the internal tissues of plants and promote the plant growth through diverse mechanisms. The current study describes the mechanistic basis of plant-specific adaptations present in an extremely beneficial endophytic bacterium. Here, the endophytic Bacillus subtilis Dcl1 isolated from the dried rhizome of Curcuma longa was found to have the drought tolerance, IAA and ACC deaminase production and phosphate solubilization properties. The whole genome sequencing and annotation further showed the genome of B. subtilis Dcl1 to have the size of 4,321,654 bp. This also showed the presence of genes for IAA, H2S, acetoin, butanediol, flagella and siderophore production along with phosphate solubilization and biofilm formation for the B. subtilis Dcl1. In addition, the genes responsible for the synthesis of surfactin, iturin, fengycin, bacillibactin, bacillaene, bacilysin, chitinase, chitosanase, protease and glycoside hydrolase could also be annotated from the genome of B. subtilis Dcl1. Identification of genes for the glycine betaine, glutamate and trehalose further indicated the drought stress tolerance features of B. subtilis Dcl1. The presence of the genetic basis to produce the catalase, superoxide dismutase, peroxidases, gamma-glutamyltranspeptidase, glutathione and glycolate oxidase also indicated the plant oxidative stress protective effect of B. subtilis Dcl1. Identification of these properties and the demonstration of its plant probiotic effect in Vigna unguiculata confirmed the applicability of B. subtilis Dcl1 as a biofertilizer, biocontrol and bioremediator agent to enhance the agricultural productivity.
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Affiliation(s)
- Aswathy Jayakumar
- School of Biosciences, Mahatma Gandhi University, PD Hills (PO), Kottayam, Kerala, 686 560, India
| | - Indu C Nair
- Department of Biotechnology, SAS SNDP Yogam College, Pathanamthitta, Kerala, India
| | - E K Radhakrishnan
- School of Biosciences, Mahatma Gandhi University, PD Hills (PO), Kottayam, Kerala, 686 560, India.
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Zhang J, Barałkiewicz D, Hanć A, Falandysz J, Wang Y. Contents and Health Risk Assessment of Elements in Three Edible Ectomycorrhizal Fungi (Boletaceae) from Polymetallic Soils in Yunnan Province, SW China. Biol Trace Elem Res 2020; 195:250-259. [PMID: 31363991 DOI: 10.1007/s12011-019-01843-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 07/17/2019] [Indexed: 10/26/2022]
Abstract
Ectomycorrhizal fungi (EcMF) can mobilize mineral elements directly from insoluble mineral sources and accumulate various metallic elements and metalloids from soils to their fruiting bodies. Mushrooms from genus Boletus and its related genus are one of the most important EcMF which are consumed worldwide as wild edible mushrooms. Yunnan province (China) is a high biodiversity of genus Boletus mushrooms but is also an area with potential elevated contents of toxic elements in soil. Total contents of As, Ag, Ba, Cd, Co, Cr, Cs, Cu, Li, Mn, Ni, Pb, Rb, Sb, Sr, Tl, U, V, and Zn in three edible EcMF species collected from five sites of Yunnan were analyzed by inductively coupled plasma mass spectrometer. The highest contents for As, Cd, and Pb were 7.8 mg kg-1 dry weight (dw) in the caps of Butyriboletus roseoflavus, 3.4 mg kg-1 dw in the caps of B. roseoflavus, and 6.4 mg kg-1 dw in the stipes of Hemileccinum impolitum. Health risk assessment of As, Cd, and Pb indicated that the estimated exposure due to intakes of some mushroom samples from the sites were above the limits recommended by the Joint FAO/WHO Expert Committee on Food Additives. Since EcMF were considered as bioexclusors of Cr, higher Cr contents in the mushroom samples, compared with previous studies, indicated high geochemical background value of Cr in the sampling sites. Relatively higher V contents in mushrooms from family Boletaceae could also associate with the high V contents in Yunnan soil. Further work is needed to identify the places in Yunnan with geochemical anomalies resulting in high levels of toxic elements in EcMF.
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Affiliation(s)
- Ji Zhang
- Institute of Medicinal Plants, Yunnan Academy of Agricultural Sciences, Kunming, 650200, China.
- Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, 666303, China.
| | - Danuta Barałkiewicz
- Department of Trace Element Analysis by Spectroscopy Method, Adam Mickiewicz University, 61-614, Poznań, Poland
| | - Anetta Hanć
- Department of Trace Element Analysis by Spectroscopy Method, Adam Mickiewicz University, 61-614, Poznań, Poland
| | - Jerzy Falandysz
- Institute of Medicinal Plants, Yunnan Academy of Agricultural Sciences, Kunming, 650200, China
- Environmental Chemistry & Ecotoxicology, University of Gdańsk, 80-309, Gdańsk, Poland
- Environmental and Computational Chemistry Group, University of Cartagena, Cartagena, 130015, Colombia
| | - Yuanzhong Wang
- Institute of Medicinal Plants, Yunnan Academy of Agricultural Sciences, Kunming, 650200, China
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Domingues VS, de Souza Monteiro A, Júlio ADL, Queiroz ALL, Dos Santos VL. Diversity of Metal-Resistant and Tensoactive-Producing Culturable Heterotrophic Bacteria Isolated from a Copper Mine in Brazilian Amazonia. Sci Rep 2020; 10:6171. [PMID: 32277075 PMCID: PMC7148335 DOI: 10.1038/s41598-020-62780-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 03/11/2020] [Indexed: 12/20/2022] Open
Abstract
Bacterial extracellular polymeric substances (EPSs) present diverse properties of biotechnological interest, such as surface modification, metal adsorption and hydrophobic substances solubilization through surface tension reduction. Thus, there is a growing demand for new producing strains and structurally variable biomolecules with different properties. One approach for scanning this biodiversity consists of exploring environments under selective pressures. The aim of this study was to evaluate the composition of culturable heterotrophic bacterial communities from five different sites from a copper mine in the Amazon biome by an enrichment technique to obtain metal resistant bacteria (lead, arsenic, cadmium, copper and zinc) capable of producing EPSs. The bacterial densities at the sites varied from 2.42 × 103 to 1.34 × 108 NMP mL-1 and the 77 bacterial isolates obtained were classified in four divisions, β-Proteobacteria (16.88%), γ-Proteobacteria (7.29%), Firmicutes (61%) and Actinobacteria (12.98%). Bacillus, Alcaligenes, and Lysinibacillus were the most dominant among the 16 observed genera, but the relative frequency of each varied according to the sample and the metal used in the enrichment culture. 58% of the bacterial strains (45) could produce EPSs. From these, 33 strains showed emulsifying activity (E24), and 9 of them reached values higher than 49%. Only Actinomyces viscosus E3.Pb5 and Bacillus subtilis group E3.As2 reduced the medium surface tension to values lower than 35 mN m-1. It was possible to confirm the high presence of bacteria capable of producing EPSs with tensoactive properties in Amazon copper mines and the evolutionary pressure exerted by the heavy metals during enrichment. These molecules can be tested as an alternative for use in processes that involve the removal of metals, such as the bioremediation of contaminated environments.
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Affiliation(s)
- Vitor Sousa Domingues
- Laboratory of Applied Microbiology, Department of Microbiology, Institute of Biological Sciences, Universidade Federal de Minas Gerais. Address: Avenida Presidente Antônio Carlos, 6627 - Pampulha/ICB, Bloco F4, sala 159, C.P. 486, Belo Horizonte, MG, 31270-901, Brazil
| | - Andrea de Souza Monteiro
- Laboratory of Applied Microbiology, Universidade CEUMA, UNICEUMA, Address: Rua Josué Moentello, Jardim Renascença, São Luís, MA, CEP 65075120, Brazil
| | - Aline Daniela Lopes Júlio
- Laboratory of Applied Microbiology, Department of Microbiology, Institute of Biological Sciences, Universidade Federal de Minas Gerais. Address: Avenida Presidente Antônio Carlos, 6627 - Pampulha/ICB, Bloco F4, sala 159, C.P. 486, Belo Horizonte, MG, 31270-901, Brazil
| | - Ana Luiza Lemos Queiroz
- Laboratory of Applied Microbiology, Department of Microbiology, Institute of Biological Sciences, Universidade Federal de Minas Gerais. Address: Avenida Presidente Antônio Carlos, 6627 - Pampulha/ICB, Bloco F4, sala 159, C.P. 486, Belo Horizonte, MG, 31270-901, Brazil
| | - Vera Lúcia Dos Santos
- Laboratory of Applied Microbiology, Department of Microbiology, Institute of Biological Sciences, Universidade Federal de Minas Gerais. Address: Avenida Presidente Antônio Carlos, 6627 - Pampulha/ICB, Bloco F4, sala 159, C.P. 486, Belo Horizonte, MG, 31270-901, Brazil.
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8
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Mycoextraction: Rapid Cadmium Removal by Macrofungi-Based Technology from Alkaline Soil. MINERALS 2018. [DOI: 10.3390/min8120589] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Fungi are promising materials for soil metal bioextraction and thus biomining. Here, a macrofungi-based system was designed for rapid cadmium (Cd) removal from alkaline soil. The system realized directed and rapid fruiting body development for subsequent biomass harvest. The Cd removal efficiency of the system was tested through a pot culture experiment. It was found that aging of the added Cd occurred rapidly in the alkaline soil upon application. During mushroom growth, the soil solution remained considerably alkaline, though a significant reduction in soil pH was observed in both Cd treatments. Cd and dissolved organic carbon (DOC) in soil solution generally increased over time and a significant correlation between them was detected in both Cd treatments, suggesting that the mushroom‒substratum system has an outstanding ability to mobilize Cd in an alkaline environment. Meanwhile, the growth of the mushrooms was not affected relative to the control. The estimated Cd removal efficiency of the system was up to 12.3% yearly thanks to the rapid growth of the mushroom and Cd enrichment in the removable substratum. Transcriptomic analysis showed that gene expression of the fruiting body presented considerable differences between the Cd treatments and control. Annotation of the differentially expressed genes (DEGs) indicated that cell wall sorption, intracellular binding, and vacuole storage may account for the cellular Cd accumulation. In conclusion, the macrofungi-based technology designed in this study has the potential to become a standalone biotechnology with practical value in soil heavy metal removal, and continuous optimization may make the system useful for biomining.
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Žižić M, Zakrzewska J, Tešanović K, Bošković E, Nešović M, Karaman M. Effects of vanadate on the mycelium of edible fungus Coprinus comatus. J Trace Elem Med Biol 2018; 50:320-326. [PMID: 30262298 DOI: 10.1016/j.jtemb.2018.07.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 07/12/2018] [Accepted: 07/20/2018] [Indexed: 10/28/2022]
Abstract
Vanadate is proposed to play a pivotal role in application of edible fungus Coprinus comatus for medical purposes. In this study the concentration of extracellular vanadate acceptable for the submerged cultivation of C. comatus mycelium was established. The mycelium could grow, and overcome vanadate toxic effects, up to the concentration of 3.3 mM. Moreover, in this condition, at the end of the exponential phase of growth, biomass yield was almost identical to that in the control. 31P NMR spectroscopy showed that addition of 10 mM vanadate to the mycelium in the exponential phase of growth provoked instantaneous increase of a sugar phosphates level which could be related to changes in activities of glycolytic enzymes. Exposure to higher vanadate concentration was toxic for the cell. 51V NMR measurements revealed that monomer of vanadate is present in the cytoplasm causing the metabolic changes. C. comatus has also capacity for vanadate reduction, as shown by EPR measurements, but vanadyl uptake is significantly less comparing to vanadate.
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Affiliation(s)
- Milan Žižić
- Department of Life Sciences, Institute for Multidisciplinary Research, University of Belgrade, Kneza Višeslava 1, 11030 Belgrade, Serbia.
| | - Joanna Zakrzewska
- Institute of General and Physical Chemistry, Studentski trg 12 11158 Belgrade, Serbia
| | - Kristina Tešanović
- Department of Physiology and Biophysics, Faculty of Biology, University of Belgrade, Studentski trg 16 11158 Belgrade, Serbia
| | - Eleonora Bošković
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovica 2, 21000 Novi Sad, Serbia
| | - Milica Nešović
- Institute of General and Physical Chemistry, Studentski trg 12 11158 Belgrade, Serbia
| | - Maja Karaman
- Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovica 2, 21000 Novi Sad, Serbia
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10
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Tang X, Liu B, Deng Q, Zhang R, Li X, Xu H. Strengthening detoxication impacts of Coprinus comatus on nickel and fluoranthene co-contaminated soil by bacterial inoculation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 206:633-641. [PMID: 29132086 DOI: 10.1016/j.jenvman.2017.11.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2017] [Revised: 11/03/2017] [Accepted: 11/03/2017] [Indexed: 06/07/2023]
Abstract
To develop an efficient and environmental-friendly approach to detoxicate nickel (Ni) and fluoranthene co-contaminated soil, the combined application of Coprinus comatus (C. comatus) with Serratia sp. FFC5 and/or Enterobacter sp. E2 was investigated. The pot experiment tested the influences of bacterial inoculation on the growth of C. comatus, content of Ni in C. comatus, Ni speciation in soil, fluoranthene dissipation, soil enzymatic activities, bacterial population and community structure. With the inoculation of bacteria, the fresh weights of C. comatus, concentration of Ni in C. comatus and the dissipation rates of fluoranthene were increased by 17.73-29.38%, 68.97-204.97% and 34.84-60.90%, respectively. Notably, results illustrated that the co-inoculation of FFC5 and E2 showed better effect in biomass enhancement, Ni accumulation and fluoranthene dissipation than solitary inoculation. Simultaneously, higher soil enzymatic and microbiological activities suggested that the integrated detoxication method of bacteria and C. comatus could improve soil quality. Therefore, we can infer that bacterial inoculation strengthened detoxication effect of C. comatus in Ni-fluoranthene co-contaminated soil, indicating that the combined application of C. comatus and bacteria can be an efficient alternative for detoxicating Ni and fluoranthene co-contaminated soil.
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Affiliation(s)
- Xia Tang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, Sichuan, PR China
| | - Bingxin Liu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, Sichuan, PR China
| | - Qiusui Deng
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, Sichuan, PR China
| | - Ruitao Zhang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, Sichuan, PR China
| | - Xue Li
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, Sichuan, PR China
| | - Heng Xu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, Sichuan, PR China.
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11
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Li X, Dong S, Yao Y, Shi W, Wu M, Xu H. Inoculation of bacteria for the bioremediation of heavy metals contaminated soil by Agrocybe aegerita. RSC Adv 2016. [DOI: 10.1039/c6ra11767h] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The combination of mushrooms and bacteria was used as a novel technique to remediate soils polluted by heavy metals.
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Affiliation(s)
- Xue Li
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education)
- College of Life Sciences
- Sichuan University
- Chengdu
- China
| | - Shunwen Dong
- Industrial Crop Research Institute of Sichuan Academy of Agricultural Sciences
- Chengdu
- China
| | - Yuan Yao
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education)
- College of Life Sciences
- Sichuan University
- Chengdu
- China
| | - Wenjin Shi
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education)
- College of Life Sciences
- Sichuan University
- Chengdu
- China
| | - Minghui Wu
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education)
- College of Life Sciences
- Sichuan University
- Chengdu
- China
| | - Heng Xu
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education)
- College of Life Sciences
- Sichuan University
- Chengdu
- China
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12
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Płociniczak T, Sinkkonen A, Romantschuk M, Sułowicz S, Piotrowska-Seget Z. Rhizospheric Bacterial Strain Brevibacterium casei MH8a Colonizes Plant Tissues and Enhances Cd, Zn, Cu Phytoextraction by White Mustard. FRONTIERS IN PLANT SCIENCE 2016; 7:101. [PMID: 26909087 PMCID: PMC4754770 DOI: 10.3389/fpls.2016.00101] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 01/19/2016] [Indexed: 05/04/2023]
Abstract
Environmental pollution by heavy metals has become a serious problem in the world. Phytoextraction, which is one of the plant-based technologies, has attracted the most attention for the bioremediation of soils polluted with these contaminants. The aim of this study was to determine whether the multiple-tolerant bacterium, Brevibacterium casei MH8a isolated from the heavy metal-contaminated rhizosphere soil of Sinapis alba L., is able to promote plant growth and enhance Cd, Zn, and Cu uptake by white mustard under laboratory conditions. Additionally, the ability of the rifampicin-resistant spontaneous mutant of MH8a to colonize plant tissues and its mechanisms of plant growth promotion were also examined. In order to assess the ecological consequences of bioaugmentation on autochthonous bacteria, the phospholipid fatty acid (PLFA) analysis was used. The MH8a strain exhibited the ability to produce ammonia, 1-amino-cyclopropane-1-carboxylic acid deaminase, indole 3-acetic acid and HCN but was not able to solubilize inorganic phosphate and produce siderophores. Introduction of MH8a into soil significantly increased S. alba biomass and the accumulation of Cd (208%), Zn (86%), and Cu (39%) in plant shoots in comparison with those grown in non-inoculated soil. Introduced into the soil, MH8a was able to enter the plant and was found in the roots and leaves of inoculated plants thus indicating its endophytic features. PLFA analysis revealed that the MH8a that was introduced into soil had a temporary influence on the structure of the autochthonous bacterial communities. The plant growth-promoting features of the MH8a strain and its ability to enhance the metal uptake by white mustard and its long-term survival in soil as well as its temporary impact on autochthonous microorganisms make the strain a suitable candidate for the promotion of plant growth and the efficiency of phytoextraction.
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Affiliation(s)
- Tomasz Płociniczak
- Department of Microbiology, University of Silesia in KatowiceKatowice, Poland
- *Correspondence: Tomasz Płociniczak,
| | - Aki Sinkkonen
- Department of Environmental Sciences, University of HelsinkiLahti, Finland
- Institute of Environmental Sciences, Kazan Federal UniversityKazan, Russia
| | - Martin Romantschuk
- Department of Environmental Sciences, University of HelsinkiLahti, Finland
- Institute of Environmental Sciences, Kazan Federal UniversityKazan, Russia
| | - Sławomir Sułowicz
- Department of Microbiology, University of Silesia in KatowiceKatowice, Poland
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13
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Xiao K, Liu H, Dong S, Fan X, Chen Y, Xu H. Interfacial effect of Stropharia rugoso-annulata in liquid medium: interaction of exudates and nickel-quintozene. RSC Adv 2016. [DOI: 10.1039/c6ra14417a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This work investigated the accumulation of Ni and dissipation of PCNB by the mycelia ofS. rugoo-annulata, together with the correlation between cell exudates and contaminants removal in liquid medium.
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Affiliation(s)
- Kemeng Xiao
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education)
- College of Life Sciences
- Sichuan University
- Chengdu
- China
| | - Hongying Liu
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education)
- College of Life Sciences
- Sichuan University
- Chengdu
- China
| | - Shunwen Dong
- Industrial Crop Research Institute of Sichuan Academy of Agricultural Sciences
- Chengdu
- China
| | - Xinzou Fan
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education)
- College of Life Sciences
- Sichuan University
- Chengdu
- China
| | - Yanli Chen
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education)
- College of Life Sciences
- Sichuan University
- Chengdu
- China
| | - Heng Xu
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education)
- College of Life Sciences
- Sichuan University
- Chengdu
- China
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14
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Liu H, Guo S, Jia Z, Han Y, He Q, Xu H. Alleviating the toxicity of heavy metals by combined amendments in cultivated bag of Pleurotus cornucopiae. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:17182-91. [PMID: 26139405 DOI: 10.1007/s11356-015-4941-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Accepted: 06/22/2015] [Indexed: 05/16/2023]
Abstract
The substrate of mushroom can be polluted with heavy metals and subsequently contaminate mushroom, which requires alternative solutions to reduce associated environmental and human health risks. The effects of amendment application on alleviating Cu and Cd toxicities to Pleurotus cornucopiae were investigated in a cultivated bag experiment conducted with the naturally contaminated substrate. Addition of combined amendments (sodium bentonite, silicon fertilizer, activated carbon, and potassium dihydrogen phosphate) increased the P. cornucopiae biomass and substrate pH. Cu and Cd concentration in P. cornucopiae as well as the available Cu and Cd in substrate reduced for the presence of amendments, and the silicon fertilizer had the biggest inhibition on metal uptake. The smallest amount of Cu and Cd in P. cornucopiae was only 30.8 and 5.51% of control, respectively. Moreover, application of amendments also decreased malondialdehyde (MDA) and hydrogen peroxide (H2O2) level in metal-stressed mushroom by 4.38-53.74 and 8.90-58.42% relative to control, respectively. The decreased oxidative stress could well contribute to the growth of P. cornucopiae, and the elevated substrate pH might lead to the lower metal availability, thus resulting in the reduction of metal accumulation in mushroom. These above results suggest that application of combined amendments in mushroom substrate could be implemented in a general scheme aiming at controlling metal content in P. cornucopiae.
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Affiliation(s)
- Hongying Liu
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, Sichuan, 610064, China
| | - Shanshan Guo
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, Sichuan, 610064, China
| | - Zhilei Jia
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, Sichuan, 610064, China
| | - Yue Han
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, Sichuan, 610064, China
| | - Qi He
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, Sichuan, 610064, China
| | - Heng Xu
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Sciences, Sichuan University, Chengdu, Sichuan, 610064, China.
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15
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Jiang J, Liu H, Li Q, Gao N, Yao Y, Xu H. Combined remediation of Cd-phenanthrene co-contaminated soil by Pleurotus cornucopiae and Bacillus thuringiensis FQ1 and the antioxidant responses in Pleurotus cornucopiae. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2015; 120:386-393. [PMID: 26117363 DOI: 10.1016/j.ecoenv.2015.06.028] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2014] [Revised: 05/13/2015] [Accepted: 06/17/2015] [Indexed: 06/04/2023]
Abstract
Remediation of soil co-contaminated with heavy metals and PAHs by mushroom and bacteria is a novel technique. In this study, the combined remediation effect of mushroom (Pleurotus cornucopiae) and bacteria (FQ1, Bacillus thuringiensis) on Cd and phenanthrene co-contaminated soil was investigated. The effect of bacteria (B. thuringiensis) on mushroom growth, Cd accumulation, phenanthrene degradation by P. cornucopiae and antioxidative responses of P. cornucopiae were studied. P. cornucopiae could adapt easily and grow well in Cd-phenanthrene co-contaminated soil. It was found that inoculation of FQ1 enhanced mushroom growth (biomass) and Cd accumulation with the increment of 26.68-43.58% and 14.29-97.67% respectively. Up to 100% and 95.07% of phenanthrene were removed in the bacteria-mushroom (B+M) treatment respectively spiked with 200mg/kg and 500mg/kg phenanthrene. In addition, bacterial inoculation alleviated oxidative stress caused by co-contamination with relative decreases in lipid peroxidation and enzyme activity, including malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD). This study demonstrated that the integrated remediation strategy of bacteria and mushroom is an effective and promising method for Cd-phenanthrene co-contaminated soil bioremediation.
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Affiliation(s)
- Juan Jiang
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Science, Sichuan University, Chengdu, Sichuan 610064, China
| | - Hongying Liu
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Science, Sichuan University, Chengdu, Sichuan 610064, China
| | - Qiao Li
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Science, Sichuan University, Chengdu, Sichuan 610064, China
| | - Ni Gao
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Science, Sichuan University, Chengdu, Sichuan 610064, China
| | - Yuan Yao
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Science, Sichuan University, Chengdu, Sichuan 610064, China
| | - Heng Xu
- Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Science, Sichuan University, Chengdu, Sichuan 610064, China.
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16
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Li Y, Qin CX, Gao B, Hu Y, Xu H. Lead-resistant strain KQBT-3 inoculants of Tricholoma lobayensis Heim that enhance remediation of lead-contaminated soil. ENVIRONMENTAL TECHNOLOGY 2015; 36:2451-2458. [PMID: 25939805 DOI: 10.1080/09593330.2015.1034788] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
To enhance lead-detoxifying efficiency of Tricholoma lobayensis Heim, one lead-resistant strain KQBT-3 (Bacillus thuringiensis) was applied owing to its excellent ability to tolerate Pb. KQBT-3 domesticated in liquid medium with increasing lead concentrations could tolerate Pb(NO3)2 up to a concentration of 800 mg L(-1). Pot experiments showed that the KQBT-3 not only could promote the growth of T. lobayensis, but also could enhance its Pb accumulation ability under heavy metal stress. Biomass and accumulation of Pb increased 47.3% and 33.2%, respectively. In addition, after inoculation of KQBT-3, the significant decrease of malondialdehyde indicated KQBT-3 could alleviate lipid peroxidation in T. lobayensis. What is interesting is that superoxide dismutase and peroxidase activities in T. lobayensis inoculated with KQBT-3 were increased, and the maximum increasing rate was 121.71% and 117.29%, respectively. However, the catalase activity increased slightly. This revealed that inoculating KQBT-3 further induced oxidative response in T. lobayensis due to Pb accumulation. Therefore, the present work showed that KQBT-3 made a major contribution to promote growth and lead uptake of T. lobayensis and alleviate the oxidative stress. This kind of auxiliary effect on macrofungi can be developed into a novel bioremediation strategy.
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Affiliation(s)
- Ying Li
- a Key Laboratory of Bio-resources and Eco-environment (Ministry of Education), College of Life Science , Sichuan University , Chengdu , Sichuan , People's Republic of China
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