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Ahemad M. Remediation of metalliferous soils through the heavy metal resistant plant growth promoting bacteria: Paradigms and prospects. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2014.11.020] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Hussain F, Hadi F, Akbar F. Magnesium oxide nanoparticles and thidiazuron enhance lead phytoaccumulation and antioxidative response in Raphanus sativus L. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:30333-30347. [PMID: 31435910 DOI: 10.1007/s11356-019-06206-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Accepted: 08/09/2019] [Indexed: 06/10/2023]
Abstract
An in vitro study was conducted to evaluate the effects of thidiazuron (TDZ) growth regulator and magnesium oxide (MgO) nanoparticles on radish (Raphanus sativus L.) under lead (Pb) stress. Effects of TDZ and MgO on seed germination, growth, biomass, total phenolics and flavonoids, antioxidant potential, and Pb phytoaccumulation in different plant parts were assessed. Nanoparticles of MgO were synthesized with leaf extract of Sageretia thea (Osbeck) plant. Thidiazuron and MgO nanoparticles were added to growth media in individual and in combinations. Lead (50 mg L-1) was added to growth media. Thidiazuron and MgO nanoparticles increased plant growth, phenolic and flavonoid contents, free radical scavenging activity, and lead phytoaccumulation. The increase was highly significant in TDZ and MgO nanoparticle combination treatments (T5, T6). Treatment (T6) showed a sixfold increase in Pb accumulation (1721.73 ± 17.4 μg g-1 dry biomass) as compared to control (274.29 ± 4.23 μg-1g-1). Total phenolic and dry biomass showed significantly positive correlation in leaves (R2 = 0.73), stem (R2 = 0.58), and roots (R2 = 0.72). The correlation of Pb accumulation and phenolic contents was significantly positive in root (R2 = 0.80), stem (R2 = 0.92), and leaves (R2 = 0.69). Flavonoid showed a positive correlation with dry biomass and Pb accumulation. Antioxidant activity was highly increased in leaves followed by stem and root. Findings show that TDZ in combination with MgO nanoparticles can play a significant role in secondary metabolite production and Pb phytoaccumulation.
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Affiliation(s)
- Fazal Hussain
- Department of Biotechnology, Faculty of Biological Sciences, University of Malakand, Chakdara, KPK, Pakistan
| | - Fazal Hadi
- Department of Biotechnology, Faculty of Biological Sciences, University of Malakand, Chakdara, KPK, Pakistan.
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, 510275, China.
| | - Fazal Akbar
- Center for Biotechnology and Microbiology, University of Swat, KPK, Mingora, Pakistan
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53
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Rosatto S, Roccotiello E, Di Piazza S, Cecchi G, Greco G, Zotti M, Vezzulli L, Mariotti M. Rhizosphere response to nickel in a facultative hyperaccumulator. CHEMOSPHERE 2019; 232:243-253. [PMID: 31154185 DOI: 10.1016/j.chemosphere.2019.05.193] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 05/09/2019] [Accepted: 05/22/2019] [Indexed: 05/11/2023]
Abstract
This study faces the characterization of the culturable microbiota of the facultative Ni-hyperaccumulator Alyssoides utriculata to obtain a collection of bacterial and fungal strains for potential applications in Ni phytoextraction. Rhizosphere soil samples and adjacent bare soil associated with A. utriculata from serpentine and non-serpentine sites were collected together with plant roots and shoots. Rhizobacteria and fungi were isolated and characterized genotypically and phenotypically. Plants and soils were analyzed for total element concentration using Inductively Coupled Plasma Mass Spectrometry (ICP-MS). Serpentine and non-serpentine sites differ in terms of elements concentration in soil, plant roots and shoots. Ni and Co are significantly higher on serpentine site, while Ca is more abundant in non-serpentine site. Bacteria and fungi were significantly more abundant in rhizosphere than in bare soil and were dominated by genera Arthrobacter, Bacillus and Streptomyces, Penicillium and Mucor. The genus Pseudomonas was only found in rhizospheric serpentine soils (<2% of total serpentine isolates) and with Streptomyces sp. showed highest Ni-tolerance up to 15 mM. The same occurred for Trichoderma strain, belonging to the harzianum group (<2% of the total microfungal count) and Penicillium ochrochloron (<10% of the total microfungal count, tolerance up to Ni 20 mM). Among serpentine bacterial isolates, 8 strains belonging to 5 genera showed at least one PGPR activity (1-Aminocyclopropane-1-Carboxylic Acid (ACC) deaminase activity, production of indole-3-acetic acid (IAA), siderophores and phosphate solubilizing capacity), especially genera Pantoea, Pseudomonas and Streptomyces. Those microorganisms might thus be promising candidates for employment in bioaugmentation trials.
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Affiliation(s)
- Stefano Rosatto
- Laboratory of Plant Biology, DISTAV-Department of Earth, Environment and Life Sciences, University of Genoa, Corso Europa 26, 16132, Genova, Italy.
| | - Enrica Roccotiello
- Laboratory of Plant Biology, DISTAV-Department of Earth, Environment and Life Sciences, University of Genoa, Corso Europa 26, 16132, Genova, Italy.
| | - Simone Di Piazza
- Laboratory of Mycology, DISTAV-Department of Earth, Environment and Life Sciences, University of Genoa, Corso Europa 26, 16132, Genova, Italy.
| | - Grazia Cecchi
- Laboratory of Mycology, DISTAV-Department of Earth, Environment and Life Sciences, University of Genoa, Corso Europa 26, 16132, Genova, Italy.
| | - Giuseppe Greco
- Laboratory of Mycology, DISTAV-Department of Earth, Environment and Life Sciences, University of Genoa, Corso Europa 26, 16132, Genova, Italy.
| | - Mirca Zotti
- Laboratory of Mycology, DISTAV-Department of Earth, Environment and Life Sciences, University of Genoa, Corso Europa 26, 16132, Genova, Italy.
| | - Luigi Vezzulli
- Laboratory of MicrobiologyDISTAV-Department of Earth, Environment and Life Sciences, University of Genoa, Corso Europa 26, 16132, Genova, Italy.
| | - Mauro Mariotti
- Laboratory of Plant Biology, DISTAV-Department of Earth, Environment and Life Sciences, University of Genoa, Corso Europa 26, 16132, Genova, Italy.
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Krauße T, Schütze E, Phieler R, Fürst D, Merten D, Büchel G, Kothe E. Changes in element availability induced by sterilization in heavy metal contaminated substrates: A comprehensive study. JOURNAL OF HAZARDOUS MATERIALS 2019; 370:70-79. [PMID: 29153855 DOI: 10.1016/j.jhazmat.2017.11.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 11/03/2017] [Accepted: 11/04/2017] [Indexed: 06/07/2023]
Abstract
Microbiome analyses of soils and microcosm experiments depend on conditions that include sterilization in order to perform experimental manipulation of microbial communities. Still, they should represent conditions close to nature. When using metal contaminated soils, sterilization methods might alter metal availability. Here, four typical metal contaminated substrates were analyzed, representing different contamination histories and soil types. They included two very poor substrates, as they are often found at metal contaminated sites. The low contents in organic carbon and nitrogen as well as two substrates with slightly higher nutrient availability were used to perform a comprehesive study for element availability changes induced by sterilization. Autoclaving, dry heat or gamma raγ sterilization were applied and compared to a non-treated control. The sterile substrates were analyzed using sequential extraction to account for different associations of the elements. Metals forming specific (hydro)oxide layers were specifically analyzed since they in turn may also impact other metals or ions. In addition, (heavy) metals and (micro)nutrients were analyzed for changes in speciation. The effects of autoclaving (wet heat) was found acceptable, while γ-ray irradiation did show unexpected changes in metal associations, especially for one substrate. Dry heat changed metal availability to the highest degree.
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Affiliation(s)
- Thomas Krauße
- Microbial Communication, Institute of Microbiology, Faculty of Biology and Pharmacy, Friedrich Schiller University Jena, Neugasse 25, 07743 Jena, Germany
| | - Eileen Schütze
- Microbial Communication, Institute of Microbiology, Faculty of Biology and Pharmacy, Friedrich Schiller University Jena, Neugasse 25, 07743 Jena, Germany
| | - René Phieler
- Microbial Communication, Institute of Microbiology, Faculty of Biology and Pharmacy, Friedrich Schiller University Jena, Neugasse 25, 07743 Jena, Germany
| | - David Fürst
- Microbial Communication, Institute of Microbiology, Faculty of Biology and Pharmacy, Friedrich Schiller University Jena, Neugasse 25, 07743 Jena, Germany
| | - Dirk Merten
- Applied Geology, Institute of Geosciences, Faculty of Chemistry and Earth Sciences, Friedrich Schiller University Jena, Burgweg 11, 07749 Jena, Germany
| | - Georg Büchel
- Applied Geology, Institute of Geosciences, Faculty of Chemistry and Earth Sciences, Friedrich Schiller University Jena, Burgweg 11, 07749 Jena, Germany
| | - Erika Kothe
- Microbial Communication, Institute of Microbiology, Faculty of Biology and Pharmacy, Friedrich Schiller University Jena, Neugasse 25, 07743 Jena, Germany.
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55
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Cui H, Liu LL, Dai JR, Yu XN, Guo X, Yi SJ, Zhou DY, Guo WH, Du N. Bacterial community shaped by heavy metals and contributing to health risks in cornfields. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 166:259-269. [PMID: 30273849 DOI: 10.1016/j.ecoenv.2018.09.096] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 09/18/2018] [Accepted: 09/21/2018] [Indexed: 05/21/2023]
Abstract
Scientists are increasingly aware that heavy metal contamination in soils, especially in farmland ecosystems, can negatively affect human health and alter the bacterial community that plays a critical role in plant growth and heavy metal accumulation. The goal of the present paper was to uncover how various heavy metals and non-metallic elements affect human health and bacterial diversity in cornfields and to explore the contribution of soil bacteria to heavy metal accumulation in crops. Soil samples were collected from five counties in Shandong Province, China, where abnormally high levels of heavy metals and metalloids were caused by mining and heavy industry. We calculated a hazard quotient (HQ) to evaluate the health risk these heavy metals cause and analyzed the soil bacterial community using 16S rRNA gene sequencing. The HQ results showed that As posed the greatest threat to human health followed by Pb although concentrations of all metals did not reach the health risk threshold. Meanwhile, principal component analysis (PCA) and redundancy analysis (RDA) revealed soil bacterial richness was significantly influenced by As, Ni, and Cr as well as pH and phosphorus, but not by the species diversity of aboveground weeds. The most abundant bacteria in our study region were heavy metal tolerant groups, specifically Actinobacteria and Proteobacteria. Moreover, correlation analysis suggested that Actinobacteria might reduce the phytoaccumulation of Cr, Cu, Zn, and Hg in corn, while Proteobacteria might weaken phytoaccumulation of Pb, Ni, As, and Cd. Our results verified that heavy metals play an important role in shaping the soil bacterial community. Using native bacteria in farmland provides a potential biological strategy for reducing the health risk posed by heavy metals related to food consumption.
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Affiliation(s)
- Han Cui
- Institute of Ecology and Biodiversity, School of Life Sciences, Shandong University, Qingdao 266237, China
| | - Le-Le Liu
- Institute of Ecology and Biodiversity, School of Life Sciences, Shandong University, Qingdao 266237, China
| | - Jie-Rui Dai
- Shandong Institute of Geological Survey, Jinan 250000, China
| | - Xiao-Na Yu
- Institute of Ecology and Biodiversity, School of Life Sciences, Shandong University, Qingdao 266237, China
| | - Xiao Guo
- School of landscape Architecture and Forestry, Qingdao Agricultural University, Qingdao 266109, China
| | - Shi-Jie Yi
- Institute of Ecology and Biodiversity, School of Life Sciences, Shandong University, Qingdao 266237, China
| | - Da-You Zhou
- Institute of Ecology and Biodiversity, School of Life Sciences, Shandong University, Qingdao 266237, China
| | - Wei-Hua Guo
- Institute of Ecology and Biodiversity, School of Life Sciences, Shandong University, Qingdao 266237, China
| | - Ning Du
- Institute of Ecology and Biodiversity, School of Life Sciences, Shandong University, Qingdao 266237, China.
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56
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Yuan XL, Cao M, Liu XM, Du YM, Shen GM, Zhang ZF, Li JH, Zhang P. Composition and Genetic Diversity of the Nicotiana tabacum Microbiome in Different Topographic Areas and Growth Periods. Int J Mol Sci 2018; 19:E3421. [PMID: 30384488 PMCID: PMC6275082 DOI: 10.3390/ijms19113421] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 10/26/2018] [Accepted: 10/29/2018] [Indexed: 11/27/2022] Open
Abstract
Fungal endophytes are the most ubiquitous plant symbionts on earth and are phylogenetically diverse. Studies on the fungal endophytes in tobacco have shown that they are widely distributed in the leaves, stems, and roots, and play important roles in the composition of the microbial ecosystem of tobacco. Herein, we analyzed and quantified the endophytic fungi of healthy tobacco leaves at the seedling stage (SS), resettling growth stage (RGS), fast-growing stage (FGS), and maturing stage (MS) at three altitudes (600, 1000, and 1300 m). We sequenced the internal transcribed spacer (ITS) region of fungal samples to delimit operational taxonomic units (OTUs) and phylogenetically characterize the communities. The results showed that the numbers of clustering OTUs at SS, RGS, FGS, and MS were 516, 709, 469, and 428, respectively. At the phylum level, species in Ascomycota and Basidiomycota had absolute predominance, representing 97.8% and 2.0% of the total number of species, respectively. We also found the number of fungi at the RGS and FGS stages was higher than those at the other two stages. Additionally, OTU richness was determined by calculating the Observed Species, Shannon, Simpson, Chao1, abundance-based coverage estimator (ACE), Good's coverage and phylogenetic distance (PD)_whole_tree indices based on the total number of species. Our results showed RGS samples had the highest diversity indices. Furthermore, we found that the diversity of fungal communities tended to decrease with increasing altitude. The results from this study indicated that tobacco harbors an abundant and diverse endophytic fungal community, which provides new opportunities for exploring their potential utilization.
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Affiliation(s)
- Xiao-Long Yuan
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
| | - Min Cao
- College of Marine Life Sciences, Ocean University of China, Qingdao 266100, China.
| | - Xin-Min Liu
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
| | - Yong-Mei Du
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
| | - Guo-Ming Shen
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
| | - Zhong-Feng Zhang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
| | - Jin-Hai Li
- National Tobacco Corporation in Hubei province, Wuhan 430000, China.
| | - Peng Zhang
- Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
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57
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Khan N, Zandi P, Ali S, Mehmood A, Adnan Shahid M, Yang J. Impact of Salicylic Acid and PGPR on the Drought Tolerance and Phytoremediation Potential of Helianthus annus. Front Microbiol 2018; 9:2507. [PMID: 30405567 PMCID: PMC6206235 DOI: 10.3389/fmicb.2018.02507] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 10/02/2018] [Indexed: 11/13/2022] Open
Abstract
The present study was aimed to isolate and characterize plant growth promoting rhizobacteria (PGPR) from the rhizosphere of rainfed area (Karak) in Pakistan. The influence of isolated rhizobacteria, in association with salicylic acid (SA), physiological attributes, drought tolerance potential, and phytoremediation in drought-stressed sunflower exposed was investigated. The isolated bacteria were named P1 and P2 and characterized on the basis of colony morphology and biochemical traits. Both PGPR P1 and P2 were identified on the basis of 16S-rRNA gene sequencing as Planomicrobium chinense strain P1 (Accession No. MF616408) and Bacillus cereus strain P2 (Accession No. MF616406). The fresh cultures (24 h old) of isolates were used to soak the seeds pre-sowing. SA was foliar applied at three-leaf-stage. Likewise, the 30-days-old seedlings (three leaf stage) were exposed to drought stress. Drought stress was imposed to 30-days-old plants (three-leaf stage) by withholding water supply for the next 15 days until the soil water content reached 10%. The PGPR and/or SA treatment resulted in significant accumulation of Cd (84%), Pb (66%), and Ni (65%) in the rhizosphere. PGPR also induced accumulation of Cd and Ni in plant shoot. Combined treatment of PGPR and SA increased the Cu (21%), Co (11%), and Zn (8%) accumulation but decreased (12%) the Fe accumulation as compared to coinoculation of PGPR P1 and P2. Inoculation of plants with PGPR significantly increased shoot length (60%), root length (68%), root fresh (61%), and dry (63%) biomass under water stress. The inoculated plants had increased chlorophyll (67%), carotenoid (70%), leaf protein (64%), sugar (64%), and phenolic (62%) contents while lower leaf proline (62%) content, malondialdehyde (MDA) (64%), and antioxidant enzymes (67%) which suggest their role in drought tolerance. It is concluded that integrative use of PGPR in combination with SA found to be an efficacious strategy to improve the phytoremediation of heavy metals and plant growth under stressed conditions particularly under water-deficient conditions.
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Affiliation(s)
- Naeem Khan
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Peiman Zandi
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Shahid Ali
- Plant Epigenetics and Development Lab, Northeast Forestry University, Harbin, China
| | - Asif Mehmood
- Department of Botany, Abdul Wali Khan University Mardan, Mardan, Pakistan
| | - Muhammad Adnan Shahid
- Horticultural Sciences Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, United States
| | - Jianjun Yang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China
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58
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Gómez-Garrido M, Mora Navarro J, Murcia Navarro FJ, Faz Cano Á. The chelating effect of citric acid, oxalic acid, amino acids and Pseudomonas fluorescens bacteria on phytoremediation of Cu, Zn, and Cr from soil using Suaeda vera. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2018; 20:1033-1042. [PMID: 30095313 DOI: 10.1080/15226514.2018.1452189] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Phytoextraction is a green technique for the removal of soil contaminants by plants uptake with the subsequent elimination of the generated biomass. The halophytic plant Suaeda vera Forssk. ex J.F.Gmel. is an native Mediterranean species able to tolerate and accumulate salts and heavy metals in their tissues. The objective of this study was to explore the potential use of S. vera for soil metal phytoextraction and to assess the impact of different chelating agents such as natural organic acids (oxalic acid [OA], citric acid [CA]), amino acids (AA) and Pseudomonas fluorescens bacteria (PFB) on the metal uptake and translocation. After 12 months, the highest accumulation of Cu was observed in the root/stem of PFB plots (17.62/8.19 mg/kg), in the root/stem of CA plots for Zn (31.16/23.52 mg/kg) and in the root of OA plots for Cr (10.53 mg/kg). The highest accumulation of metals occurred in the roots (27.33-50.76 mg/kg). Zn was the metal that accumulated at the highest rates in most cases. The phytoextraction percentages were higher for Cu and Zn (∼2%) with respect to Cr (∼1%). The percentages of metal removal from soil indicate the need to monitor soil properties, to recognize the influence of each treatment and to increase the concentration of bioavailable metals by the use of agricultural management practices aimed at promoting plant growth.
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Affiliation(s)
- Melisa Gómez-Garrido
- a Technical University of Cartagena, Sustainable Use, Management, and Reclamation of Soil and Water Research Group , Department of Agrarian Science and Technology , Cartagena , Murcia , Spain
| | - José Mora Navarro
- b Dirección General de Medio Ambiente. Consejería de Turismo, Cultura y Medio Ambiente , Calle Catedrático Eugenio Úbeda 3, Murcia , Spain
| | - Francisco J Murcia Navarro
- b Dirección General de Medio Ambiente. Consejería de Turismo, Cultura y Medio Ambiente , Calle Catedrático Eugenio Úbeda 3, Murcia , Spain
| | - Ángel Faz Cano
- a Technical University of Cartagena, Sustainable Use, Management, and Reclamation of Soil and Water Research Group , Department of Agrarian Science and Technology , Cartagena , Murcia , Spain
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Zeng P, Guo Z, Cao X, Xiao X, Liu Y, Shi L. Phytostabilization potential of ornamental plants grown in soil contaminated with cadmium. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2018; 20:311-320. [PMID: 29053368 DOI: 10.1080/15226514.2017.1381939] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
In a greenhouse experiment, five ornamental plants, Osmanthus fragrans (OF), Ligustrum vicaryi L. (LV), Cinnamomum camphora (CC), Loropetalum chinense var. rubrum (LC), and Euonymus japonicas cv. Aureo-mar (EJ), were studied for the ability to phytostabilization for Cd-contaminated soil. The results showed that these five ornamental plants can grow normally when the soil Cd content is less than 24.6 mg·kg-1. Cd was mainly deposited in the roots of OF, LV, LC and EJ which have grown in Cd-contaminated soils, and the maximum Cd contents reached 15.76, 19.09, 20.59 and 32.91 mg·kg-1, respectively. For CC, Cd was mainly distributed in the shoots and the maximum Cd content in stems and leaves were 12.5 and 10.71 mg·kg-1, however, the total amount of Cd in stems and leaves was similar with the other ornamental plants. The enzymatic activities in Cd-contaminated soil were benefited from the five tested ornamental plants remediation. Soil urease and sucrase activities were improved, while dehydrogenase activity was depressed. Meanwhile, the soil microbial community was slightly influenced when soil Cd content is less than 24.6 mg·kg-1 under five ornamental plants remediation. The results further suggested that ornamental plants could be promising candidates for phytostabilization of Cd-contaminated soil.
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Affiliation(s)
- Peng Zeng
- a Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University , Changsha , China
| | - Zhaohui Guo
- a Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University , Changsha , China
| | - Xia Cao
- a Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University , Changsha , China
| | - Xiyuan Xiao
- a Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University , Changsha , China
| | - Yanan Liu
- a Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University , Changsha , China
| | - Lei Shi
- a Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University , Changsha , China
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Sharma R, Bhardwaj R, Gautam V, Kohli SK, Kaur P, Bali RS, Saini P, Thukral AK, Arora S, Vig AP. Microbial Siderophores in Metal Detoxification and Therapeutics: Recent Prospective and Applications. PLANT MICROBIOME: STRESS RESPONSE 2018. [DOI: 10.1007/978-981-10-5514-0_15] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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61
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Biswas JK, Mondal M, Rinklebe J, Sarkar SK, Chaudhuri P, Rai M, Shaheen SM, Song H, Rizwan M. Multi-metal resistance and plant growth promotion potential of a wastewater bacterium Pseudomonas aeruginosa and its synergistic benefits. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2017; 39:1583-1593. [PMID: 28397062 DOI: 10.1007/s10653-017-9950-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Accepted: 03/27/2017] [Indexed: 06/07/2023]
Abstract
Water and soil pollution by toxic heavy metals (HMs) is increasing globally because of increase in population, industrialization and urbanization. It is a burning problem for the public, scientists, academicians and politicians how to tackle the toxic contaminants which jeopardize the environment. One possible solution for pollution abatement is a bioremediation-effective and innovative technology that uses biological systems for treatment of contaminants. Many bacteria synthesize indole-3-acetic acid (IAA) which is a product of L-tryptophan metabolism and belongs to the auxin class of plant growth-promoting hormone. The present study aimed at assessing the resistance pattern of wastewater bacteria against multiple HMs and plant growth promotion activity associated with IAA. A Gram-negative bacterial strain Pseudomonas aeruginosa KUJM was isolated from Kalyani Sewage Treatment Plant. This strain showed the potential to tolerate multiple contaminations such as As(III) (50 mM), As(V) (800 mM), Cd (8 mM), Co (18 mM), Cu (7 mM), Cr (2.5 mM), Ni (3 mM) and Zn (14 mM). The capability of IAA production at different tryptophan concentration (1, 2, 5 and 10 mg mL-1) was determined, and seed germination-enhancing potential was also estimated on lentil (Lens culinaris). Such type of HM-resistant, IAA-producing and seed germination-enhancing P. aeruginosa KUJM offer great promise as inoculants to promote plant growth in the presence of toxic HMs, as well as plant inoculant systems useful for phytoremediation of polluted soils. Hence, P. aeruginosa KUJM finds significant applications in HM-contaminated poor agricultural field as well as in bioremediation of HM-contaminated wastewater system.
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Affiliation(s)
- Jayanta Kumar Biswas
- Pollution, Ecotoxicology and Ecotechnology Research Unit, Department of Ecological Studies, University of Kalyani, Kalyani, Nadia, West Bengal, 741235, India.
- International Centre for Ecological Engineering, University of Kalyani, Kalyani, West Bengal, 741235, India.
| | - Monojit Mondal
- Pollution, Ecotoxicology and Ecotechnology Research Unit, Department of Ecological Studies, University of Kalyani, Kalyani, Nadia, West Bengal, 741235, India
| | - Jörg Rinklebe
- Laboratory of Soil- and Groundwater-Management, Institute of Foundation Engineering, Water- and Waste-Management, School of Architecture and Civil Engineering, University of Wuppertal, Pauluskirchstraße 7, 42285, Wuppertal, Germany
- Department of Environment and Energy, Sejong University, 98 Gunja-dong, Gwnagjin-gu, Seoul, 143-747, South Korea
| | - Santosh Kumar Sarkar
- Department of Marine Science, University of Calcutta, 35 Ballygunge Circular Road, Calcutta 11, 700019, India
| | - Punarbasu Chaudhuri
- Department of Environmental Science, University of Calcutta, 35 Ballygunge Circular Road, Calcutta 11, 700019, India
| | - Mahendra Rai
- Department of Biotechnology, SGB Amravati University, Amravati, Maharashtra, 444602, India
| | - Sabry M Shaheen
- Laboratory of Soil- and Groundwater-Management, Institute of Foundation Engineering, Water- and Waste-Management, School of Architecture and Civil Engineering, University of Wuppertal, Pauluskirchstraße 7, 42285, Wuppertal, Germany
- Department of Soil and Water Sciences, Faculty of Agriculture, University of Kafrelsheikh, Kafr El-Sheikh, 33 516, Egypt
| | - Hocheol Song
- Department of Environment and Energy, Sejong University, 98 Gunja-dong, Gwnagjin-gu, Seoul, 143-747, South Korea
| | - Muhammad Rizwan
- Department of Environmental Sciences and Engineering, Government College University, Faisalabad, 38000, Pakistan
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Almeida CMR, Oliveira T, Reis I, Gomes CR, Mucha AP. Bacterial community dynamic associated with autochthonous bioaugmentation for enhanced Cu phytoremediation of salt-marsh sediments. MARINE ENVIRONMENTAL RESEARCH 2017; 132:68-78. [PMID: 29122290 DOI: 10.1016/j.marenvres.2017.10.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Revised: 10/09/2017] [Accepted: 10/13/2017] [Indexed: 05/12/2023]
Abstract
Autochthonous bioaugmentation for metal phytoremediation is still little explored, particularly its application to estuarine salt marshes, but results obtained so far are promising. Nevertheless, understanding the behaviour of the microbial communities in the process of bioaugmentation and their role in improving metal phytoremediation is very important to fully validate the application of this biological technology. This study aimed to characterize the bacterial community dynamic associated with the application of autochthonous bioaugmentation in an experimentation which showed that Phragmites australis rhizosphere microorganisms could increase this salt marsh plant potential to phytoremediate Cu contaminated sediments. Bacterial communities present in the autochthonous microbial consortium resistant to Cu added to the medium and in the sediment at the beginning and at the end of the experiment were characterized by ARISA. Complementarily, the consortium and the sediment used for its production were characterized by next generation sequencing using the pyrosequencing platform 454. The microbial consortium resistant to Cu obtained from non-vegetated sediment was dominated by the genus Lactococcus (46%), Raoultella (25%), Bacillus (12%) and Acinetobacter (11%), whereas the one obtained form rhizosediment was dominated by the genus Gluconacetobacter (77%), Bacillus (17%) and Dyella (3%). Results clearly showed that, after two months of experiment, Cu caused a shift in the bacterial community structure of sediments, an effect that was observed either with or without addition of the metal resistant microbial consortium. Therefore, bioaugmentation application improved the process of phytoremediation (metal translocation by the plant was increased) without inducing long term changes in the bacterial community structure of the sediments. So, phytoremediation combined with autochthonous bioaugmentation can be a suitable technology for the recovery of estuarine areas, contributing for an efficient risk management strategy of these coastal zones.
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Affiliation(s)
- C Marisa R Almeida
- CIMAR/CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal.
| | - Tânia Oliveira
- CIMAR/CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal; Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, s/n, 4169-007 Porto, Portugal
| | - Izabela Reis
- CIMAR/CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal
| | - Carlos R Gomes
- CIMAR/CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal; Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, s/n, 4169-007 Porto, Portugal
| | - Ana P Mucha
- CIMAR/CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal
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Sobariu DL, Fertu DIT, Diaconu M, Pavel LV, Hlihor RM, Drăgoi EN, Curteanu S, Lenz M, Corvini PFX, Gavrilescu M. Rhizobacteria and plant symbiosis in heavy metal uptake and its implications for soil bioremediation. N Biotechnol 2017; 39:125-134. [DOI: 10.1016/j.nbt.2016.09.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2016] [Revised: 07/30/2016] [Accepted: 09/06/2016] [Indexed: 10/21/2022]
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Grobelak A, Hiller J. Bacterial siderophores promote plant growth: Screening of catechol and hydroxamate siderophores. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2017; 19:825-833. [PMID: 28699782 DOI: 10.1080/15226514.2017.1290581] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The aim of the study was to determine the quality and quantity of siderophores produced by bacteria isolated from plants' roots. The second aim was to determine the effect of siderophores on plants growth (Festuca rubra L. and Brassica napus L.). The study was carried out using bacteria isolated from roots of: Arabidopsis thaliana L., F. rubra, and Agrostis capillaris L., growing on the heavy metals contaminated area. The chrome azurol sulfonate (CAS) test, Arnow's test for catechol siderophores, and Csaksy's test for hydroxamate siderophores were performed. Among the bacteria, 42 isolates (39%) had a positive result in the CAS. Endophytic bacteria were mostly producing the catechol siderophores. It was found that F. rubra is the plant which is linked with the highest number of siderophores producing bacteria. The highest concentration of siderophores was noted for ectorhizospheric bacteria associated with A. thaliana, hyperaccumulating plant. It was found that hydroxamate siderophores are mainly produced by ectorhizosphere and rhizoplane bacteria. The siderophores producing bacteria reduced the toxicity of metals and improved the phytoremediation. Siderophores treatment increased the growth of plants in the biological assay, growing on two different soils: one highly contaminated with heavy metals and the second strongly alkaline soil.
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Affiliation(s)
- Anna Grobelak
- a Institute of Environmental Engineering, Faculty of Infrastructure and Environment, Czestochowa University of Technology , Czestochowa , Poland
| | - Joanna Hiller
- a Institute of Environmental Engineering, Faculty of Infrastructure and Environment, Czestochowa University of Technology , Czestochowa , Poland
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65
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Chen J, Zhang L, Jin Q, Su C, Zhao L, Liu X, Kou S, Wang Y, Xiao M. Bioremediation of phenol in soil through using a mobile plant-endophyte system. CHEMOSPHERE 2017; 182:194-202. [PMID: 28499180 DOI: 10.1016/j.chemosphere.2017.05.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2016] [Revised: 04/27/2017] [Accepted: 05/03/2017] [Indexed: 06/07/2023]
Abstract
Plant-endophyte remediation of volatile pollutants in soil is an emerging technology. For more efficient application, plant-endophyte systems were formed through stimulation of transfer of degradative plasmids in plant tissue by co-inoculation of corn, wheat or tomato seedlings with Pseudomonas fluorescens TP13 carrying a self-transmissible degradative plasmid, and P. fluorescens streptomycin-resistant P13 strain. The corn-TP13-P13 (CTP) system had higher degradation activity than other plant-endophyte systems. Transplanting the CTP, from loam to sandy clay loam soil, from greenhouse to field trials, almost completely removed phenol from contaminated soils in 15 d. Intact transplantation of the CTP to contaminated soils was more efficient than co-transplanting of phenol-degrading bacteria and plant in detoxification of phenol. After the experiments the harvested CPT still exhibited remarkable bioremediation activity. The number of degradative plasmid-carrying endophytic bacteria in the CTP system was just slightly more than in the corn seedlings inoculated with TP13 alone, but the former substantially surpassed the latter in phenol-degrading activity, probably due to stimulation of transfer of the degradative plasmids among endophytic bacteria in plant tissues. More degradative plasmid-carrying bacteria colonized bioremediating soil and plant tissues, and higher plasmid transfer frequency and C23O activity of transconjugant were found in soils for the CTP system compared with other treatments. These results showed that the CTP system is a valuable tool to degrade volatile organic pollutants and transfer of degradative plasmids in plant tissues is important for construction of a mobile plant-endophyte system applied in bioremediation of volatile pollutants.
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Affiliation(s)
- Jun Chen
- Development Center of Plant Germplasm, College of Life and Environment Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Li Zhang
- Development Center of Plant Germplasm, College of Life and Environment Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Qing Jin
- Development Center of Plant Germplasm, College of Life and Environment Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Cuizhu Su
- Development Center of Plant Germplasm, College of Life and Environment Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Lei Zhao
- Development Center of Plant Germplasm, College of Life and Environment Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Xiaoxiang Liu
- Development Center of Plant Germplasm, College of Life and Environment Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Shumeng Kou
- Development Center of Plant Germplasm, College of Life and Environment Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Yujing Wang
- Development Center of Plant Germplasm, College of Life and Environment Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Ming Xiao
- Development Center of Plant Germplasm, College of Life and Environment Sciences, Shanghai Normal University, Shanghai, 200234, China.
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Woźniak A, Drzewiecka K, Kęsy J, Marczak Ł, Narożna D, Grobela M, Motała R, Bocianowski J, Morkunas I. The Influence of Lead on Generation of Signalling Molecules and Accumulation of Flavonoids in Pea Seedlings in Response to Pea Aphid Infestation. Molecules 2017; 22:E1404. [PMID: 28837107 PMCID: PMC6151543 DOI: 10.3390/molecules22091404] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 08/14/2017] [Accepted: 08/21/2017] [Indexed: 12/14/2022] Open
Abstract
The aim of this study was to investigate the effect of an abiotic factor, i.e., lead at various concentrations (low causing a hormesis effect and causing high toxicity effects), on the generation of signalling molecules in pea (Pisum sativum L. cv. Cysterski) seedlings and then during infestation by the pea aphid (Acyrthosiphon pisum Harris). The second objective was to verify whether the presence of lead in pea seedling organs and induction of signalling pathways dependent on the concentration of this metal trigger defense responses to A. pisum. Therefore, the profile of flavonoids and expression levels of genes encoding enzymes of the flavonoid biosynthesis pathway (phenylalanine ammonialyase and chalcone synthase) were determined. A significant accumulation of total salicylic acid (TSA) and abscisic acid (ABA) was recorded in the roots and leaves of pea seedlings growing on lead-supplemented medium and next during infestation by aphids. Increased generation of these phytohormones strongly enhanced the biosynthesis of flavonoids, including a phytoalexin, pisatin. This research provides insights into the cross-talk between the abiotic (lead) and biotic factor (aphid infestation) on the level of the generation of signalling molecules and their role in the induction of flavonoid biosynthesis.
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Affiliation(s)
- Agnieszka Woźniak
- Department of Plant Physiology, Poznań University of Life Sciences, Wołyńska 35, 60-637 Poznań, Poland.
| | - Kinga Drzewiecka
- Department of Chemistry, Poznań University of Life Sciences, Wojska Polskiego 75, 60-625 Poznań, Poland.
| | - Jacek Kęsy
- Chair of Plant Physiology and Biotechnology, Nicolaus Copernicus University, Gagarina 9, 87-100 Toruń, Poland.
| | - Łukasz Marczak
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, 61-704 Poznań, Poland.
| | - Dorota Narożna
- Department of Biochemistry and Biotechnology, Poznań University of Life Sciences, Dojazd 11, 60-632 Poznań, Poland.
| | - Marcin Grobela
- Department of Ecology and Environmental Protection, Laboratory of Environmental Analyses, the Institute of Plant Protection National Research Institute, Węgorka 20, 60-101 Poznań, Poland.
| | - Rafał Motała
- Department of Ecology and Environmental Protection, Laboratory of Environmental Analyses, the Institute of Plant Protection National Research Institute, Węgorka 20, 60-101 Poznań, Poland.
| | - Jan Bocianowski
- Department of Mathematical and Statistical Methods, Poznań University of Life Sciences, Wojska Polskiego 28, 60-637 Poznań, Poland.
| | - Iwona Morkunas
- Department of Plant Physiology, Poznań University of Life Sciences, Wołyńska 35, 60-637 Poznań, Poland.
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Iffis B, St-Arnaud M, Hijri M. Petroleum Contamination and Plant Identity Influence Soil and Root Microbial Communities While AMF Spores Retrieved from the Same Plants Possess Markedly Different Communities. FRONTIERS IN PLANT SCIENCE 2017; 8:1381. [PMID: 28848583 PMCID: PMC5550799 DOI: 10.3389/fpls.2017.01381] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 07/25/2017] [Indexed: 05/30/2023]
Abstract
Phytoremediation is a promising in situ green technology based on the use of plants to cleanup soils from organic and inorganic pollutants. Microbes, particularly bacteria and fungi, that closely interact with plant roots play key roles in phytoremediation processes. In polluted soils, the root-associated microbes contribute to alleviation of plant stress, improve nutrient uptake and may either degrade or sequester a large range of soil pollutants. Therefore, improving the efficiency of phytoremediation requires a thorough knowledge of the microbial diversity living in the rhizosphere and in close association with plant roots in both the surface and the endosphere. This study aims to assess fungal ITS and bacterial 16S rRNA gene diversity using high-throughput sequencing in rhizospheric soils and roots of three plant species (Solidago canadensis, Populus balsamifera, and Lycopus europaeus) growing spontaneously in three petroleum hydrocarbon polluted sedimentation basins. Microbial community structures of rhizospheric soils and roots were compared with those of microbes associated with arbuscular mycorrhizal fungal (AMF) spores to determine the links between the root and rhizosphere communities and those associated with AMF. Our results showed a difference in OTU richness and community structure composition between soils and roots for both bacteria and fungi. We found that petroleum hydrocarbon pollutant (PHP) concentrations have a significant effect on fungal and bacterial community structures in both soils and roots, whereas plant species identity showed a significant effect only on the roots for bacteria and fungi. Our results also showed that the community composition of bacteria and fungi in soil and roots varied from those associated with AMF spores harvested from the same plants. This let us to speculate that in petroleum hydrocarbon contaminated soils, AMF may release chemical compounds by which they recruit beneficial microbes to tolerate or degrade the PHPs present in the soil.
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68
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Ashraf MA, Hussain I, Rasheed R, Iqbal M, Riaz M, Arif MS. Advances in microbe-assisted reclamation of heavy metal contaminated soils over the last decade: A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 198:132-143. [PMID: 28456029 DOI: 10.1016/j.jenvman.2017.04.060] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 04/03/2017] [Accepted: 04/19/2017] [Indexed: 05/06/2023]
Abstract
Contamination of agricultural soils with trace metals present lethal consequences in terms of diverse ecological and environmental problems that entail entry of metal in food chain, soil deterioration, plant growth suppression, yield reduction and alteration in microbial community. Metal polluted soils have become a major concern for scientists around the globe. Phytoremediation involves the hyperaccumulation of metals in different plant parts. Phytoremediation of metals from polluted soils could be enhanced through inoculation with metal resistant plant growth promoting (PGP) bacteria. These PGP bacteria not only promote plant growth but also enhance metal uptake by plants. There are a number of reports in the literature where PGP bacterial inoculation improves metal accumulation in different plant parts without influencing plant growth. Therefore, there is a need to select PGP bacterial strains which possess the potential to improve plant growth as well as expedite the phytoremediation of metals. In this review, we have discussed the mechanisms possessed by PGP bacteria to promote plant growth and phytoremediation of metals. The central part of this review deals with the recent advances in microbial assisted-phytoremediation of metals.
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Affiliation(s)
- Muhammad Arslan Ashraf
- Department of Botany, Government College University Faisalabad, Faisalabad 38000, Pakistan.
| | - Iqbal Hussain
- Department of Botany, Government College University Faisalabad, Faisalabad 38000, Pakistan; Department of Environmental Life Sciences, Graduate School of Life Sciences, Tohoku University, Sendai 980-8577, Japan
| | - Rizwan Rasheed
- Department of Botany, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Muhammad Iqbal
- Department of Botany, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Muhammad Riaz
- Department of Environmental Sciences & Engineering, Government College University Faisalabad, Faisalabad 38000, Pakistan
| | - Muhammad Saleem Arif
- Department of Environmental Sciences & Engineering, Government College University Faisalabad, Faisalabad 38000, Pakistan
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69
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Dąbrowska G, Hrynkiewicz K, Trejgell A, Baum C. The effect of plant growth-promoting rhizobacteria on the phytoextraction of Cd and Zn by Brassica napus L. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2017; 19:597-604. [PMID: 27739900 DOI: 10.1080/15226514.2016.1244157] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The test strains Bacteroidetes bacterium (Ba), Pseudomonas fluorescens (Pf) and Variovorax sp. (Va) were selected in advance for their in vitro capability for growth promotion of rapeseed in the presence of increased concentrations of Cd, Cu, Pb and Zn in the medium. In the pot experiment, the strains were used for single Ba, Pf, Va or combined Ba + Pf, Ba + Va, Pf + Va, and Ba + Pf + Va inoculation of B. napus growing in contaminated soil from alluvial deposits. The positive effect of bacterial strains on plant growth was observed in vitro, but was not confirmed in situ in the contaminated soil, where the tested strains inhibited biomass production, rather than stimulating it. However, single inoculation with Ba significantly increased the chlorophyll content and K+ concentration in the leaves. The inoculation of rapeseed with Ba and Va strains was indicated to be the most promising combination for phytoextraction of Cd and Zn from contaminated soil. Combined inoculation with Pf+Va and Pf + Ba+Va significantly decreased the concentration of heavy metals in the roots of rapeseed. We conclude that suitable combinations of PGPR can control the metal uptake of B. napus, selectively increasing either metal extraction or metal stabilization in the rhizosphere and offering promising applications in soil remediation.
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Affiliation(s)
- G Dąbrowska
- a Department of Genetics, Faculty of Biology and Environment Protection , Nicolaus Copernicus University , Toruń , Poland
| | - K Hrynkiewicz
- b Department of Microbiology, Faculty of Biology and Environment Protection , Nicolaus Copernicus University , Toruń , Poland
| | - A Trejgell
- c Department of Plant Physiology and Biotechnology, Faculty of Biology and Environment Protection , Nicolaus Copernicus University , Toruń , Poland
| | - C Baum
- d Department of Soil Science , University of Rostock , Rostock , Germany
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70
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Farh MEA, Kim YJ, Sukweenadhi J, Singh P, Yang DC. Aluminium resistant, plant growth promoting bacteria induce overexpression of Aluminium stress related genes in Arabidopsis thaliana and increase the ginseng tolerance against Aluminium stress. Microbiol Res 2017; 200:45-52. [DOI: 10.1016/j.micres.2017.04.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 02/24/2017] [Accepted: 04/08/2017] [Indexed: 11/25/2022]
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71
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Bahadur A, Ahmad R, Afzal A, Feng H, Suthar V, Batool A, Khan A, Mahmood-Ul-Hassan M. The influences of Cr-tolerant rhizobacteria in phytoremediation and attenuation of Cr (VI) stress in agronomic sunflower (Helianthus annuus L.). CHEMOSPHERE 2017; 179:112-119. [PMID: 28364646 DOI: 10.1016/j.chemosphere.2017.03.102] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 03/24/2017] [Accepted: 03/25/2017] [Indexed: 06/07/2023]
Abstract
Chromium contamination of agronomic soil has to turn into a serious global problem. This research was pointed to assess the effects of three Cr-tolerant rhizobacteria (SS1, SS3, and SS6) on sunflower growth and heavy metal uptake under Cr smog i.e. 20, 30 and 40 ppm using K2Cr2O7. Root promotion assay and pot experiment were conducted to investigate and evaluate the effects of Cr tolerance rhizobacteria and Cr accumulation capacity of sunflower. From root promotion assay non-significant variation was observed in the root length between SS1 and SS3 compared with un-inoculated whereas SS6 enhanced the root length in the absence and presence of chromium. In addition, inoculation with rhizobacteria alleviated the Cr concentration and endorsed plant growth by enhancing Cr accumulation in sunflower. At different Cr levels, the Cr concentration in shoot was improved by each rhizobacterium though their difference was non-significant with each other, while the percentage increase was half as the Cr level doubled. Different rhizobacterium inoculation significantly (P < 0.05) affected the physiological and morphological characteristics of sunflower and increased the plant height, stem diameter, head diameter, grain yield, oil content of seeds, and total biomass, and among them, SS6 observed best followed by SS1 and SS3 comparing with un-inoculated. Our study illustrates an assessment about Cr-tolerant bacteria and their influences and recommends that these bacteria can effectively be used for crop improvement which provides a potential approach for Cr phytoremediation.
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Affiliation(s)
- Ali Bahadur
- Department of Botany, Hazara University, Mansehra, Khyber Pakhtunkhwa, Pakistan; School of Life Sciences, Lanzhou University, Lanzhou 730000, China; MOE Key Laboratory of Cell Activities and Stress Adaptation, School of Life Sciences, Lanzhou University, Lanzhou 730000, China.
| | - Rizwan Ahmad
- Land Resources Research Institute, National Agricultural Research Centre, Islamabad, 45500, Pakistan
| | - Aftab Afzal
- Department of Botany, Hazara University, Mansehra, Khyber Pakhtunkhwa, Pakistan
| | - Huyuan Feng
- MOE Key Laboratory of Cell Activities and Stress Adaptation, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Vishandas Suthar
- Plant Physiology/ Chemistry Section, Central Cotton Research Institute, Sakrand, Nawabshah, Sindh, Pakistan
| | - Asfa Batool
- School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Aman Khan
- Department of Botany, Hazara University, Mansehra, Khyber Pakhtunkhwa, Pakistan; School of Life Sciences, Lanzhou University, Lanzhou 730000, China
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Rathore SS, Shekhawat K, Dass A, Kandpal BK, Singh VK. Phytoremediation Mechanism in Indian Mustard (Brassica juncea) and Its Enhancement Through Agronomic Interventions. ACTA ACUST UNITED AC 2017. [DOI: 10.1007/s40011-017-0885-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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73
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Hassan TU, Bano A, Naz I. Alleviation of heavy metals toxicity by the application of plant growth promoting rhizobacteria and effects on wheat grown in saline sodic field. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2017; 19:522-529. [PMID: 27936865 DOI: 10.1080/15226514.2016.1267696] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The aim of the study was to determine tolerance of plant growth promoting rhizobacteria (PGPR) in different concentrations of Cu, Cr, Co, Cd, Ni, Mn, and Pb and to evaluate the PGPR-modulated bioavailability of different heavy metals in the rhizosphere soil and wheat tissues, grown in saline sodic soil. Bacillus cereus and Pseudomonas moraviensis were isolated from Cenchrus ciliaris L. growing in the Khewra salt range. Seven-day-old cultures of PGPR were applied on wheat as single inoculum, co-inoculation and carrier-based biofertilizer (using maize straw and sugarcane husk as carrier). At 100 ppm of Cr and Cu, the survival rates of rhizobacteria were decreased by 40%. Single inoculation of PGPR decreased 50% of Co, Ni, Cr and Mn concentrations in the rhizosphere soil. Co-inoculation of PGPR and biofertilizer treatment further augmented the decreases by 15% in Co, Ni, Cr and Mn over single inoculation except Pb and Co where decreases were 40% and 77%, respectively. The maximum decrease in biological concentration factor (BCF) was observed for Cd, Co, Cr, and Mn. P. moraviensis inoculation decreases the biological accumulation coefficient (BAC) as well as translocation factor (TF) for Cd, Cr, Cu Mn, and Ni. The PGPR inoculation minimized the deleterious effects of heavy metals, and the addition of carriers further assisted the PGPR.
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Affiliation(s)
- Tamoor Ul Hassan
- a Department of Plant Sciences , Quaid-i-Azam University , Islamabad , Pakistan
| | - Asghari Bano
- b Department of Biosciences , University of Wah , Wah Cantt , Pakistan
| | - Irum Naz
- a Department of Plant Sciences , Quaid-i-Azam University , Islamabad , Pakistan
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Strachel R, Wyszkowska J, Baćmaga M. The Influence of Nitrogen on the Biological Properties of Soil Contaminated with Zinc. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2017; 98:426-432. [PMID: 27872971 PMCID: PMC5343085 DOI: 10.1007/s00128-016-1977-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 11/16/2016] [Indexed: 05/10/2023]
Abstract
This study analyzed the relationship between nitrogen fertilization and the biological properties of soil contaminated with zinc. The influence of various concentrations of zinc and nitrogen on the microbiological and biochemical activity of soil was investigated. In a laboratory experiment, loamy sand with pHKCl 5.6 was contaminated with zinc (ZnCl2) and fertilized with urea as a source of nitrogen. The activity of acid phosphatase, alkaline phosphatase, urease and β-glucosidase, and microbial counts were determined in soil samples after 2 and 20 weeks of incubation. Zinc generally stimulated hydrolase activity, but the highest zinc dose (1250 mg kg-1) led to the inhibition of hydrolases. Nitrogen was not highly effective in neutralizing zinc's negative effect on enzyme activity, but it stimulated the growth of soil-dwelling microorganisms. The changes in soil acidity observed after the addition of urea modified the structure of microbial communities.
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Affiliation(s)
- Rafał Strachel
- Department of Microbiology, University of Warmia and Mazury, Plac Łódzki 3, 10-727 Olsztyn, Poland
| | - Jadwiga Wyszkowska
- Department of Microbiology, University of Warmia and Mazury, Plac Łódzki 3, 10-727 Olsztyn, Poland
| | - Małgorzata Baćmaga
- Department of Microbiology, University of Warmia and Mazury, Plac Łódzki 3, 10-727 Olsztyn, Poland
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Leonard S, Hommais F, Nasser W, Reverchon S. Plant-phytopathogen interactions: bacterial responses to environmental and plant stimuli. Environ Microbiol 2017; 19:1689-1716. [DOI: 10.1111/1462-2920.13611] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 11/09/2016] [Accepted: 11/16/2016] [Indexed: 01/06/2023]
Affiliation(s)
- Simon Leonard
- University of Lyon, Université Claude Bernard Lyon 1; INSA-Lyon, CNRS, UMR5240, Microbiologie, Adaptation, Pathogénie, 10 rue Raphaël Dubois Villeurbanne F-69622 France
| | - Florence Hommais
- University of Lyon, Université Claude Bernard Lyon 1; INSA-Lyon, CNRS, UMR5240, Microbiologie, Adaptation, Pathogénie, 10 rue Raphaël Dubois Villeurbanne F-69622 France
| | - William Nasser
- University of Lyon, Université Claude Bernard Lyon 1; INSA-Lyon, CNRS, UMR5240, Microbiologie, Adaptation, Pathogénie, 10 rue Raphaël Dubois Villeurbanne F-69622 France
| | - Sylvie Reverchon
- University of Lyon, Université Claude Bernard Lyon 1; INSA-Lyon, CNRS, UMR5240, Microbiologie, Adaptation, Pathogénie, 10 rue Raphaël Dubois Villeurbanne F-69622 France
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76
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M T. Antagonistic features displayed by Plant Growth Promoting Rhizobacteria (PGPR): A Review. ACTA ACUST UNITED AC 2017. [DOI: 10.29328/journal.jpsp.1001004] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Amin A, Latif Z. Screening of mercury-resistant and indole-3-acetic acid producing bacterial-consortium for growth promotion of Cicer arietinum L. J Basic Microbiol 2016; 57:204-217. [PMID: 27911010 DOI: 10.1002/jobm.201600352] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 11/01/2016] [Indexed: 11/11/2022]
Abstract
Mercury resistant (HgR ) bacteria were screened from industrial effluents and effluents-polluted rhizosphere soils near to districts Kasur and Sheikhupura, Pakistan. Out of 60 isolates, three bacterial strains, Bacillus sp. AZ-1, Bacillus cereus AZ-2, and Enterobacter cloacae AZ-3 showed Hg-resistance as 20 μg ml-1 of HgCl2 and indole-3-acetic acid (IAA) production as 8-38 μg ml-1 . Biochemical and molecular characterization of selected bacteria was confirmed by 16S ribotyping. Mercury resistant genes merA, merB, and merE of mer operon in Bacillus spp. were checked by PCR amplification. The merE gene involved in the transportation of elemental mercury (Hg0 ) via cell membrane was first time cloned into pHLV vector and transformed in C43(DE3) Escherichia coli cells. The recombinant plasmid (pHLMerE) was expressed and purified by nickel (Ni+2 ) affinity chromatography. Chromatographic techniques viz. thin layer chromatography (TLC), high performance liquid chromatography (HPLC), and Gas chromatography-mass spectrometry (GC-MS) confirmed the presence of Indole-3-acetic acid (IAA) in supernatant of selected bacteria. The strain E. cloacae AZ-3 detoxified 88% of mercury (Hg+2 ) from industrial effluent (p < 0.05) after immobilization in Na-alginate beads. Finally, Hg-resistant and IAA producing bacterial consortium of two strains, Bacillus sp. AZ-1 and E. cloacae AZ-3, inoculated in mercury amended soil with 20 μg ml-1 HgCl2 resulted 80, 22, 64, 116, 50, 75, 30, and 100% increase as compared to control plants in seed germination, shoot and root length, shoot and root fresh weight, number of pods per plant, number of seeds and weight of seeds, respectively, of chickpea (Cicer arietinum L.) in pot experiments (p < 0.05).
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Affiliation(s)
- Aatif Amin
- Department of Microbiology and Molecular Genetics, University of the Punjab, Lahore, Pakistan
| | - Zakia Latif
- Department of Microbiology and Molecular Genetics, University of the Punjab, Lahore, Pakistan
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Zubair M, Shakir M, Ali Q, Rani N, Fatima N, Farooq S, Shafiq S, Kanwal N, Ali F, Nasir IA. Rhizobacteria and phytoremediation of heavy metals. ACTA ACUST UNITED AC 2016. [DOI: 10.1080/21622515.2016.1259358] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Mahrukh Zubair
- Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Mehak Shakir
- Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Qurban Ali
- Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Noshaba Rani
- Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Neelam Fatima
- Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Safana Farooq
- Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Sijjil Shafiq
- Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
| | - Naila Kanwal
- Department of Plant Breeding and Genetics, University of Agriculture, Faisalabad 38000, Pakistan
| | - Fawad Ali
- Institute of Plant Science, Southern Cross University, Lismore 2480, Australia
| | - Idrees Ahmad Nasir
- Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan
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79
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Jampasri K, Pokethitiyook P, Kruatrachue M, Ounjai P, Kumsopa A. Phytoremediation of fuel oil and lead co-contaminated soil by Chromolaena odorata in association with Micrococcus luteus. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2016; 18:994-1001. [PMID: 27159380 DOI: 10.1080/15226514.2016.1183568] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Phytoremediation is widely promoted as a cost-effective technology for treating heavy metal and total petroleum hydrocarbon (TPH) co-contaminated soil. This study investigated the concurrent removal of TPHs and Pb in co-contaminated soil (27,000 mg kg(-1) TPHs, 780 mg kg(-1) Pb) by growing Siam weed (Chromolaena odorata) in a pot experiment for 90 days. There were four treatments: co-contaminated soil; co-contaminated soil with C. odorata only; co-contaminated soil with C. odorata and Micrococcus luteus inoculum; and co-contaminated soil with M. luteus only. C. odorata survived and grew well in the co-contaminated soil. C. odorata with M. luteus showed the highest Pb accumulation (513.7 mg kg(-1)) and uptake (7.7 mg plant(-1)), and the highest reduction percentage of TPHs (52.2%). The higher TPH degradation in vegetated soils indicated the interaction between the rhizosphere microorganisms and plants. The results suggested that C. odorata together with M. luteus and other rhizosphere microorganisms is a promising candidate for the removal of Pb and TPHs in co-contaminated soils.
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Affiliation(s)
- Kongkeat Jampasri
- a Department of Biology , Faculty of Science, Mahidol University , Bangkok , Thailand
- b Center of Excellence on Environmental Health and Toxicology (EHT) , Bangkok , Thailand
| | - Prayad Pokethitiyook
- a Department of Biology , Faculty of Science, Mahidol University , Bangkok , Thailand
- b Center of Excellence on Environmental Health and Toxicology (EHT) , Bangkok , Thailand
| | - Maleeya Kruatrachue
- a Department of Biology , Faculty of Science, Mahidol University , Bangkok , Thailand
| | - Puey Ounjai
- a Department of Biology , Faculty of Science, Mahidol University , Bangkok , Thailand
| | - Acharaporn Kumsopa
- c Faculty of Environment and Resource Studies, Mahidol University , Nakhon Pathom , Thailand
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80
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Złoch M, Thiem D, Gadzała-Kopciuch R, Hrynkiewicz K. Synthesis of siderophores by plant-associated metallotolerant bacteria under exposure to Cd(2.). CHEMOSPHERE 2016; 156:312-325. [PMID: 27183333 DOI: 10.1016/j.chemosphere.2016.04.130] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 04/23/2016] [Accepted: 04/30/2016] [Indexed: 05/21/2023]
Abstract
Rhizosphere and endophytic bacteria are well known producers of siderophores, organic compounds that chelate ferric iron (Fe(3+)), and therefore play an important role in plant growth promotion in metalliferous areas, thereby improving bioremediation processes. However, in addition to their primary function in iron mobilization, siderophores also have the capacity to chelate other heavy metals, such as Al(3+), Zn(2+), Cu(2+), Pb(2+) and Cd(2+), that can affect homeostasis and the heavy metal tolerance of microorganisms. The main goal of our study was to select the most efficient siderophore-producing bacterial strains isolated from the roots (endophytes) and rhizosphere of Betula pendula L. and Alnus glutinosa L. growing at two heavy metal contaminated sites in southern Poland. Siderophore biosynthesis of these strains in the presence of increasing concentrations of Cd(2+) (0, 0.5, 1, 2 and 3 mM) under iron-deficiency conditions was analysed using spectrophotometric chemical tests for hydroxamates, catecholates and phenolates, as well as the separation of bacterial siderophores by HPLC and characterization of their structure by UHPLC-QTOF/MS. We proved that (i) siderophore-producing bacterial strains seems to be more abundant in the rhizosphere (47%) than in root endophytes (18%); (ii) the strains most effective at siderophore synthesis belonged to the genus Streptomyces and were able to secrete three types of siderophores under Cd(2+) stress: hydroxamates, catecholates and phenolates; (iii) in general, the addition of Cd(2+) enhanced siderophore synthesis, particularly ferrioxamine B synthesis, which may indicate that siderophores play a significant role in tolerance to Cd(2+) in Streptomyces sp.
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Affiliation(s)
- Michał Złoch
- Department of Microbiology, Faculty of Biology and Environmental Protection, Nicolaus Copernicus University, Lwowska 1, 87-100 Torun, Poland; Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, Wileńska 4, 87-100 Toruń, Poland
| | - Dominika Thiem
- Department of Microbiology, Faculty of Biology and Environmental Protection, Nicolaus Copernicus University, Lwowska 1, 87-100 Torun, Poland
| | - Renata Gadzała-Kopciuch
- Department of Environmental Chemistry & Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, Gagarina 7, PL-87-100 Torun, Poland; Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, Wileńska 4, 87-100 Toruń, Poland
| | - Katarzyna Hrynkiewicz
- Department of Microbiology, Faculty of Biology and Environmental Protection, Nicolaus Copernicus University, Lwowska 1, 87-100 Torun, Poland; Interdisciplinary Centre of Modern Technologies, Nicolaus Copernicus University, Wileńska 4, 87-100 Toruń, Poland.
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81
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Iffis B, St-Arnaud M, Hijri M. Petroleum hydrocarbon contamination, plant identity and arbuscular mycorrhizal fungal (AMF) community determine assemblages of the AMF spore-associated microbes. Environ Microbiol 2016; 18:2689-704. [DOI: 10.1111/1462-2920.13438] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bachir Iffis
- Institut de Recherche en Biologie Végétale, Université de Montréal and Jardin botanique de Montréal; 4101 Rue Sherbrooke Est Montréal QC H1X 2B2 Canada
| | - Marc St-Arnaud
- Institut de Recherche en Biologie Végétale, Université de Montréal and Jardin botanique de Montréal; 4101 Rue Sherbrooke Est Montréal QC H1X 2B2 Canada
| | - Mohamed Hijri
- Institut de Recherche en Biologie Végétale, Université de Montréal and Jardin botanique de Montréal; 4101 Rue Sherbrooke Est Montréal QC H1X 2B2 Canada
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82
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Pishchik VN, Vorob’ev NI, Provorov NA, Khomyakov YV. Mechanisms of plant and microbial adaptation to heavy metals in plant–microbial systems. Microbiology (Reading) 2016. [DOI: 10.1134/s0026261716030097] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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83
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Saha M, Sarkar S, Sarkar B, Sharma BK, Bhattacharjee S, Tribedi P. Microbial siderophores and their potential applications: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:3984-99. [PMID: 25758420 DOI: 10.1007/s11356-015-4294-0] [Citation(s) in RCA: 309] [Impact Index Per Article: 38.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 02/27/2015] [Indexed: 05/18/2023]
Abstract
Siderophores are small organic molecules produced by microorganisms under iron-limiting conditions which enhance the uptake of iron to the microorganisms. In environment, the ferric form of iron is insoluble and inaccessible at physiological pH (7.35-7.40). Under this condition, microorganisms synthesize siderophores which have high affinity for ferric iron. These ferric iron-siderophore complexes are then transported to cytosol. In cytosol, the ferric iron gets reduced into ferrous iron and becomes accessible to microorganism. In recent times, siderophores have drawn much attention due to its potential roles in different fields. Siderophores have application in microbial ecology to enhance the growth of several unculturable microorganisms and can alter the microbial communities. In the field of agriculture, different types of siderophores promote the growth of several plant species and increase their yield by enhancing the Fe uptake to plants. Siderophores acts as a potential biocontrol agent against harmful phyto-pathogens and holds the ability to substitute hazardous pesticides. Heavy-metal-contaminated samples can be detoxified by applying siderophores, which explicate its role in bioremediation. Siderophores can detect the iron content in different environments, exhibiting its role as a biosensor. In the medical field, siderophore uses the "Trojan horse strategy" to form complexes with antibiotics and helps in the selective delivery of antibiotics to the antibiotic-resistant bacteria. Certain iron overload diseases for example sickle cell anemia can be treated with the help of siderophores. Other medical applications of siderophores include antimalarial activity, removal of transuranic elements from the body, and anticancer activity. The aim of this review is to discuss the important roles and applications of siderophores in different sectors including ecology, agriculture, bioremediation, biosensor, and medicine.
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Affiliation(s)
- Maumita Saha
- Department of Molecular Biology & Bioinformatics, Tripura University (A Central University), Suryamaninagar, Tripura, 799022, India
| | - Subhasis Sarkar
- Department of Molecular Biology & Bioinformatics, Tripura University (A Central University), Suryamaninagar, Tripura, 799022, India
| | - Biplab Sarkar
- National Institute of Abiotic Stress Management, Baramati, 413115, Pune, Maharashtra, India
| | - Bipin Kumar Sharma
- Department of Microbiology, Tripura University (A Central University), Suryamaninagar, Tripura, 799022, India
| | - Surajit Bhattacharjee
- Department of Molecular Biology & Bioinformatics, Tripura University (A Central University), Suryamaninagar, Tripura, 799022, India.
| | - Prosun Tribedi
- Department of Microbiology, Tripura University (A Central University), Suryamaninagar, Tripura, 799022, India.
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84
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Macci C, Peruzzi E, Doni S, Poggio G, Masciandaro G. The phytoremediation of an organic and inorganic polluted soil: A real scale experience. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2016; 18:378-386. [PMID: 26555402 DOI: 10.1080/15226514.2015.1109595] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A phytoremediation process with horse manure, plants (Populus alba, Cytisus scoparius, Paulownia tomentosa) and naturally growing vegetation was carried out at a real-scale in order to phytoremediate and functionally recover a soil contaminated by metals (Zn, Pb, Cd, Ni, Cu, Cr), hydrocarbons (TPH) and polychlorobiphenyls (PCB). All the plants were effective in two years in the reclamation of the polluted soil, showing an average reduction of about 35%, 40%, and 70% in metals, TPH and PCB content, respectively. As regards the plants, the poplar contributed the most to organic removal. In fact, its ability to take up and detoxify organic pollutants is well known. Paulownia tomentosa, instead, showed high metal removal. The Cytisus scoparius was the least effective plant in soil decontamination. The recovery of soil functionality was followed by enzyme activities, expressing the biochemical processes underway, and nutrient content useful for plant growth and development. Throughout the area, an enhancement of metabolic processes and soil chemical quality was observed. All the enzymatic activities showed a general increase over time (until 3-4 fold than the initial value for urease and β-glucosidase). Moreover, Cytisus scoparius, even though it showed a lower decontamination capability, was the most effective in soil metabolic stimulation.
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Affiliation(s)
- C Macci
- a Consiglio Nazionale delle Ricerche (CNR) , Istituto per lo Studio degli Ecosistemi (ISE) , Pisa , Italy
| | - E Peruzzi
- a Consiglio Nazionale delle Ricerche (CNR) , Istituto per lo Studio degli Ecosistemi (ISE) , Pisa , Italy
| | - S Doni
- a Consiglio Nazionale delle Ricerche (CNR) , Istituto per lo Studio degli Ecosistemi (ISE) , Pisa , Italy
| | - G Poggio
- a Consiglio Nazionale delle Ricerche (CNR) , Istituto per lo Studio degli Ecosistemi (ISE) , Pisa , Italy
| | - G Masciandaro
- a Consiglio Nazionale delle Ricerche (CNR) , Istituto per lo Studio degli Ecosistemi (ISE) , Pisa , Italy
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85
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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: 30] [Impact Index Per Article: 3.8] [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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86
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Aracic S, Manna S, Petrovski S, Wiltshire JL, Mann G, Franks AE. Innovative biological approaches for monitoring and improving water quality. Front Microbiol 2015; 6:826. [PMID: 26322034 PMCID: PMC4532924 DOI: 10.3389/fmicb.2015.00826] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Accepted: 07/27/2015] [Indexed: 12/20/2022] Open
Abstract
Water quality is largely influenced by the abundance and diversity of indigenous microbes present within an aquatic environment. Physical, chemical and biological contaminants from anthropogenic activities can accumulate in aquatic systems causing detrimental ecological consequences. Approaches exploiting microbial processes are now being utilized for the detection, and removal or reduction of contaminants. Contaminants can be identified and quantified in situ using microbial whole-cell biosensors, negating the need for water samples to be tested off-site. Similarly, the innate biodegradative processes can be enhanced through manipulation of the composition and/or function of the indigenous microbial communities present within the contaminated environments. Biological contaminants, such as detrimental/pathogenic bacteria, can be specifically targeted and reduced in number using bacteriophages. This mini-review discusses the potential application of whole-cell microbial biosensors for the detection of contaminants, the exploitation of microbial biodegradative processes for environmental restoration and the manipulation of microbial communities using phages.
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Affiliation(s)
- Sanja Aracic
- Applied and Environmental Microbiology Laboratory, Department of Physiology, Anatomy and Microbiology, La Trobe University , Melbourne, VIC, Australia
| | - Sam Manna
- Applied and Environmental Microbiology Laboratory, Department of Physiology, Anatomy and Microbiology, La Trobe University , Melbourne, VIC, Australia
| | - Steve Petrovski
- Applied and Environmental Microbiology Laboratory, Department of Physiology, Anatomy and Microbiology, La Trobe University , Melbourne, VIC, Australia
| | - Jennifer L Wiltshire
- Applied and Environmental Microbiology Laboratory, Department of Physiology, Anatomy and Microbiology, La Trobe University , Melbourne, VIC, Australia
| | - Gülay Mann
- Land Division, Defence Science and Technology Organisation , Melbourne, VIC, Australia
| | - Ashley E Franks
- Applied and Environmental Microbiology Laboratory, Department of Physiology, Anatomy and Microbiology, La Trobe University , Melbourne, VIC, Australia
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Wang J, Zhang Y, Li Y, Wang X, Nan W, Hu Y, Zhang H, Zhao C, Wang F, Li P, Shi H, Bi Y. Endophytic microbes Bacillus sp. LZR216-regulated root development is dependent on polar auxin transport in Arabidopsis seedlings. PLANT CELL REPORTS 2015; 34:1075-1087. [PMID: 25700982 DOI: 10.1007/s00299-015-1766-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 01/14/2015] [Accepted: 02/10/2015] [Indexed: 06/04/2023]
Abstract
Endophytic microbes Bacillus sp. LZR216 isolated from Arabidopsis root promoted Arabidopsis seedlings growth. It may be achieved by promoting the lateral root growth and inhibiting the primary root elongation. Plant roots are colonized by an immense number of microbes, including epiphytic and endophytic microbes. It was found that they have the ability to promote plant growth and protect roots from biotic and abiotic stresses. But little is known about the mechanism of the endophytic microbes-regulated root development. We isolated and identified a Bacillus sp., named as LZR216, of endophytic bacteria from Arabidopsis root. By employing a sterile experimental system, we found that LZR216 promoted the Arabidopsis seedlings growth, which may be achieved by promoting the lateral root growth and inhibiting the primary root elongation. By testing the cell type-specific developmental markers, we demonstrated that Bacillus sp. LZR216 increases the DR5::GUS and DR5::GFP expression but decreases the CYCB1;1::GUS expression in Arabidopsis root tips. Further studies indicated that LZR216 is able to inhibit the meristematic length and decrease the cell division capability but has little effect on the quiescent center function of the root meristem. Subsequently, it was also shown that LZR216 has no significant effects on the primary root length of the pin2 and aux1-7 mutants. Furthermore, LZR216 down-regulates the levels of PIN1-GFP, PIN2-GFP, PIN3-GFP, and AUX1-YFP. In addition, the wild-type Arabidopsis seedlings in the present of 1 or 5 µM NPA (an auxin transport inhibitor) were insensitive to LZR216-inhibited primary root elongation. Collectively, LZR216 regulates the development of root system architecture depending on polar auxin transport. This study shows a new insight on the ability of beneficial endophytic bacteria in regulating postembryonic root development.
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Affiliation(s)
- Jianfeng Wang
- Ministry of Education Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou, Gansu, 730000, People's Republic of China
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de la Providencia IE, Stefani FOP, Labridy M, St-Arnaud M, Hijri M. Arbuscular mycorrhizal fungal diversity associated with Eleocharis obtusa and Panicum capillare growing in an extreme petroleum hydrocarbon-polluted sedimentation basin. FEMS Microbiol Lett 2015; 362:fnv081. [PMID: 25991810 DOI: 10.1093/femsle/fnv081] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/13/2015] [Indexed: 11/12/2022] Open
Abstract
Arbuscular mycorrhizal fungi (AMF) have been extensively studied in natural and agricultural ecosystems, but little is known about their diversity and community structure in highly petroleum-polluted soils. In this study, we described an unexpected diversity of AMF in a sedimentation basin of a former petrochemical plant, in which petroleum hydrocarbon (PH) wastes were dumped for many decades. We used high-throughput PCR, cloning and sequencing of 18S rDNA to assess the molecular diversity of AMF associated with Eleocharis obtusa and Panicum capillare spontaneously inhabiting extremely PH-contaminated sediments. The analyses of rhizosphere and root samples over two years showed a remarkable AMF richness comparable with that found in temperate natural ecosystems. Twenty-one taxa, encompassing the major families within Glomeromycota, were detected. The most abundant OTUs belong to genera Claroideoglomus, Diversispora, Rhizophagus and Paraglomus. Both plants had very similar overall community structures and OTU abundances; however, AMF community structure differed when comparing the overall OTU distribution across the two years of sampling. This could be likely explained by variations in precipitations between 2011 and 2012. Our study provides the first view of AMF molecular diversity in soils extremely polluted by PH, and demonstrated the ability of AMF to colonize and establish in harsh environments.
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Affiliation(s)
- Ivan E de la Providencia
- Institut de recherche en biologie végétale, Université de Montréal and Jardin botanique de Montréal, 4101 rue Sherbrooke Est, Montréal (Québec) H1X 2B2, Canada
| | - Franck O P Stefani
- Institut de recherche en biologie végétale, Université de Montréal and Jardin botanique de Montréal, 4101 rue Sherbrooke Est, Montréal (Québec) H1X 2B2, Canada
| | - Manuel Labridy
- Institut de recherche en biologie végétale, Université de Montréal and Jardin botanique de Montréal, 4101 rue Sherbrooke Est, Montréal (Québec) H1X 2B2, Canada
| | - Marc St-Arnaud
- Institut de recherche en biologie végétale, Université de Montréal and Jardin botanique de Montréal, 4101 rue Sherbrooke Est, Montréal (Québec) H1X 2B2, Canada
| | - Mohamed Hijri
- Institut de recherche en biologie végétale, Université de Montréal and Jardin botanique de Montréal, 4101 rue Sherbrooke Est, Montréal (Québec) H1X 2B2, Canada
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Wang X, Mavrodi DV, Ke L, Mavrodi OV, Yang M, Thomashow LS, Zheng N, Weller DM, Zhang J. Biocontrol and plant growth-promoting activity of rhizobacteria from Chinese fields with contaminated soils. Microb Biotechnol 2015; 8:404-18. [PMID: 25219642 PMCID: PMC4408174 DOI: 10.1111/1751-7915.12158] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 07/19/2014] [Accepted: 07/24/2014] [Indexed: 11/30/2022] Open
Abstract
The aim of this study was to inventory the types of plant growth-promoting rhizobacteria (PGPR) present in the rhizosphere of plants grown in soils contaminated with heavy metals, recalcitrant organics, petroleum sewage or salinity in China. We screened 1223 isolates for antifungal activity and about 24% inhibited Rhizoctonia solani or Sclerotinia sclerotiorum. Twenty-four strains inhibitory to R. solani, Gaeumannomyces graminis var. tritici and/or S. sclerotiorum and representing the dominant morphotypes were assayed for PGPR activity. Seven strains contained phlD, prnD, pltC or phzF genes and produced the antibiotics 2,4-diacetylphloroglucinol, pyrrolnitrin, pyoluteorin and phenazines respectively. Six strains contained acdS, which encodes 1-aminocyclopropane-1-carboxylic acid deaminase. Phylogenetic analysis of 16S rDNA and phlD, phzF and acdS genes demonstrated that some strains identified as Pseudomonas were similar to model PGPR strains Pseudomonas protegens Pf-5, Pseudomonas chlororaphis subsp. aureofaciens 30-84 and P. brassicacearum Q8r1-96. Pseudomonas protegens- and P. chlororaphis-like strains had the greatest biocontrol activity against Rhizoctonia root rot and take-all of wheat. Pseudomonas protegens and P. brassicacearum-like strains showed the greatest promotion of canola growth. Our results indicate that strains from contaminated soils are similar to well-described PGPR found in agricultural soils worldwide.
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Affiliation(s)
- Xuefei Wang
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural UniversityWuhan, Hubei, 430070, China
- Department of Plant Pathology, Washington State UniversityPullman, WA, 99164-6430, USA
| | - Dmitri V Mavrodi
- Department of Biological Sciences, The University of Southern MississippiHattiesburg, MS, 39406, USA
| | - Linfeng Ke
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural UniversityWuhan, Hubei, 430070, China
| | - Olga V Mavrodi
- Department of Plant Pathology, Washington State UniversityPullman, WA, 99164-6430, USA
| | - Mingming Yang
- Department of Plant Pathology, Washington State UniversityPullman, WA, 99164-6430, USA
| | - Linda S Thomashow
- Agricultural Research Service, Root Disease and Biological Control Research Unit, United States Department of AgriculturePullman, WA, 99164-6430, USA
| | - Na Zheng
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural UniversityWuhan, Hubei, 430070, China
| | - David M Weller
- Agricultural Research Service, Root Disease and Biological Control Research Unit, United States Department of AgriculturePullman, WA, 99164-6430, USA
| | - Jibin Zhang
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural UniversityWuhan, Hubei, 430070, China
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90
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Fatnassi IC, Chiboub M, Saadani O, Jebara M, Jebara SH. Impact of dual inoculation with Rhizobium and PGPR on growth and antioxidant status of Vicia faba L. under copper stress. C R Biol 2015; 338:241-54. [DOI: 10.1016/j.crvi.2015.02.001] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 01/21/2015] [Accepted: 02/01/2015] [Indexed: 11/28/2022]
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91
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Suresh Kumar K, Dahms HU, Won EJ, Lee JS, Shin KH. Microalgae - A promising tool for heavy metal remediation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2015; 113:329-52. [PMID: 25528489 DOI: 10.1016/j.ecoenv.2014.12.019] [Citation(s) in RCA: 324] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Revised: 12/03/2014] [Accepted: 12/08/2014] [Indexed: 05/09/2023]
Abstract
Biotechnology of microalgae has gained popularity due to the growing need for novel environmental technologies and the development of innovative mass-production. Inexpensive growth requirements (solar light and CO2), and, the advantage of being utilized simultaneously for multiple technologies (e.g. carbon mitigation, biofuel production, and bioremediation) make microalgae suitable candidates for several ecofriendly technologies. Microalgae have developed an extensive spectrum of mechanisms (extracellular and intracellular) to cope with heavy metal toxicity. Their wide-spread occurrence along with their ability to grow and concentrate heavy metals, ascertains their suitability in practical applications of waste-water bioremediation. Heavy metal uptake by microalgae is affirmed to be superior to the prevalent physicochemical processes employed in the removal of toxic heavy metals. In order to evaluate their potential and to fill in the loopholes, it is essential to carry out a critical assessment of the existing microalgal technologies, and realize the need for development of commercially viable technologies involving strategic multidisciplinary approaches. This review summarizes several areas of heavy metal remediation from a microalgal perspective and provides an overview of various practical avenues of this technology. It particularly details heavy metals and microalgae which have been extensively studied, and provides a schematic representation of the mechanisms of heavy metal remediation in microalgae.
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Affiliation(s)
- K Suresh Kumar
- Department of Marine Sciences and Convergent Technology, College of Science and Technology, Hanyang University, Ansan 426-791, South Korea
| | - Hans-Uwe Dahms
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung 80424, Taiwan, ROC; Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 80424, Taiwan, ROC
| | - Eun-Ji Won
- Department of Biological Sciences, College of Natural Sciences, Sungkyunkwan University, Suwon 440-746, South Korea
| | - Jae-Seong Lee
- Department of Biological Sciences, College of Natural Sciences, Sungkyunkwan University, Suwon 440-746, South Korea
| | - Kyung-Hoon Shin
- Department of Marine Sciences and Convergent Technology, College of Science and Technology, Hanyang University, Ansan 426-791, South Korea.
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92
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El Aafi N, Saidi N, Maltouf AF, Perez-Palacios P, Dary M, Brhada F, Pajuelo E. Prospecting metal-tolerant rhizobia for phytoremediation of mining soils from Morocco using Anthyllis vulneraria L. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:4500-4512. [PMID: 25315928 DOI: 10.1007/s11356-014-3596-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2014] [Accepted: 09/11/2014] [Indexed: 06/04/2023]
Abstract
The aim of this work was using the legume plant Anthyllis vulneraria L. (ecotype metallicolous) as a trap plant, in order to isolate metal-tolerant rhizobial strains from metal-contaminated soils from Morocco, with pollution indexes spanning three orders of magnitude. As bioindicator, soil bacterial density was inversely correlated to the pollution index. Forty-three bulk soil bacteria and sixty two bacteria from nodules were isolated. The resistance of bacteria from nodules to heavy metals was four to ten times higher than that of bulk soil bacteria, reaching high maximum tolerable concentrations for Cd (2 mM), Cu (2 mM), Pb (7 mM), and Zn (3 mM). Besides, some strains show multiple metal-tolerant abilities and great metal biosorption onto the bacterial surface. Amplification and restriction analysis of ribosomal 16S rDNA (ARDRA) and 16S ribosomal DNA (rDNA) sequencing were used to assess biodiversity and phylogenetic position among bacteria present in nodules. Our results suggest that a great diversity of non-rhizobial bacteria (alpha- and gamma-proteobacteria) colonize nodules of Anthyllis plants in contaminated soils. Taking together, our results evidence that, in polluted soils, rhizobia can be displaced by non-rhizobial (and hence, non-fixing) strains from nodules. Thus, the selection of metal-resistant rhizobia is a key step for using A. vulneraria symbioses for in situ phytoremediation.
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Affiliation(s)
- N El Aafi
- Laboratory of Microbiology and Molecular Biology, Faculty of Sciences, University Mohamed V at Agdal, Rabat, Morocco,
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93
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Ullah A, Mushtaq H, Ali H, Munis MFH, Javed MT, Chaudhary HJ. Diazotrophs-assisted phytoremediation of heavy metals: a novel approach. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:2505-2514. [PMID: 25339525 DOI: 10.1007/s11356-014-3699-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Accepted: 10/06/2014] [Indexed: 06/04/2023]
Abstract
Heavy metals, which have severe toxic effects on plants, animals, and human health, are serious pollutants of the modern world. Remediation of heavy metal pollution is utmost necessary. Among different approaches used for such remediation, phytoremediation is an emerging technology. Research is in progress to enhance the efficiency of this plant-based technology. In this regard, the role of rhizospheric and symbiotic microorganisms is important. It was assessed by enumeration of data from the current studies that efficiency of phytoremediation can be enhanced by assisting with diazotrophs. These bacteria are very beneficial because they bring metals to more bioavailable form by the processes of methylation, chelation, leaching, and redox reactions and the production of siderophores. Diazotrophs also posses growth-promoting traits including nitrogen fixation, phosphorous solubilization, phytohormones synthesis, siderophore production, and synthesis of ACC-deaminase which may facilitate plant growth and increase plant biomass, in turn facilitating phytoremediation technology. Thus, the aim of this review is to highlight the potential of diazotrophs in assisting phytoremediation of heavy metals in contaminated soils. The novel current assessment of literature suggests the winning combination of diazotroph with phytoremediation technology.
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Affiliation(s)
- Abid Ullah
- Department of Plant Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
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94
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Joutey NT, Sayel H, Bahafid W, El Ghachtouli N. Mechanisms of hexavalent chromium resistance and removal by microorganisms. REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2015; 233:45-69. [PMID: 25367133 DOI: 10.1007/978-3-319-10479-9_2] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Chromium has been and is extensively used worldwide in multiple industrial processes and is routinely discharged to the environment from such processes. Therefore, this heavy metal is a potential threat to the environment and to public health, primarily because it is non-biodegradable and environmentally persistent. Chromium exists in several oxidation states, the most stable of which are trivalent Cr(Ill) and hexavalent Cr(VI) species. Each species possesses its own individual chemical characteristics and produces its own biological effects. For example, Cr (Ill) is an essential oligoelement for humans, whereas Cr(VI) is carcinogenic and mutagenic. Several chemical methods are used to remove Cr(VI) from contaminated sites. Each of these methods has advantages and disadvantages. Currently, bioremediation is often the preferred method to deal with Cr contaminated sites, because it is eco-friendly, cost-effective and is a "natural" technology. Many yeast, bacterial and fungal species have been assessed for their suitability to reduce or remove Cr(VI) contamination. The mechanisms by which these microorganisms resist and reduce Cr(VI) are variable and are species dependent. There are several Cr-resistance mechanisms that are displayed by microorganisms. These include active efflux of Cr compounds, metabolic reduction of Cr(VI) to Cr (ill), and either intercellular or extracellular prec1p1tation. Microbial Cr (VI) removal typically involves three stages: binding of chromium to the cell surface, translocation of chromium into the cell, and reduction of Cr(VI) to Cr (ill). Cr(VI) reduction by microorganisms may proceed on the cell surface, outside the cell, or intracellularly, either directly via chromate reductase enzymes, or indirectly via metabolite reduction of Cr(VI). The uptake of chromium ions is a biphasic process. The primary step is known as biosorption, a metabolic energyindependent process. Thereafter, bioaccumulation occurs, but is much slower, and is dependent on cell metabolic activity. Choosing an appropriate bioremediation strategy for Cr is extremely important and must involve investigating and understanding the key mechanisms that are involved in microbial resistance to and removal of Cr(VI).
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Affiliation(s)
- Nezha Tahri Joutey
- Microbial Biotechnology Laboratory, Faculty of Sciences and Techniques, Sidi Mohamed Ben Abdellah University, Route Immouzer, 2202, Fez, Morocco
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95
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Nabti E, Schmid M, Hartmann A. Application of Halotolerant Bacteria to Restore Plant Growth Under Salt Stress. SUSTAINABLE DEVELOPMENT AND BIODIVERSITY 2015. [DOI: 10.1007/978-3-319-14595-2_9] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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96
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Oliveira T, Mucha AP, Reis I, Rodrigues P, Gomes CR, Almeida CMR. Copper phytoremediation by a salt marsh plant (Phragmites australis) enhanced by autochthonous bioaugmentation. MARINE POLLUTION BULLETIN 2014; 88:231-238. [PMID: 25240741 DOI: 10.1016/j.marpolbul.2014.08.038] [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: 06/27/2014] [Revised: 08/21/2014] [Accepted: 08/27/2014] [Indexed: 06/03/2023]
Abstract
Here we evaluated whether the potential of Phragmites australis to phytoremediate Cu contaminated sediments could be enhanced by bioaugmentation with an autochthonous microorganism consortium (AMC) that is resistant to Cu. Saltmarsh plants with sediment attached to their roots were collected, placed in vessels and kept in greenhouses, under tidal simulation. Sediments were contaminated with Cu and the AMC was added to half of the vessels. After two months, plants accumulated significant amounts of Cu (2-10 times more) in all tissues although in higher amounts (7-10 times more) in belowground structures. AMC addition increased Cu bioavailability (5-10%) in sediments leading to a decrease in belowground structures biomass. However, bioaugmentation increased Cu translocation, with higher amounts (2 times more) of Cu in the plant stems, without significant visual toxicity signs. Therefore, autochthonous bioaugmentation can increase Cu phytoextraction potential of P. australis, which can be a valuable strategy for the recovery and management of moderately impacted estuaries.
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Affiliation(s)
- T Oliveira
- CIMAR/CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Rua dos Bragas, 289, 4050-123 Porto, Portugal; Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, s/n, 4169-007 Porto, Portugal
| | - A P Mucha
- CIMAR/CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Rua dos Bragas, 289, 4050-123 Porto, Portugal
| | - I Reis
- CIMAR/CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Rua dos Bragas, 289, 4050-123 Porto, Portugal
| | - P Rodrigues
- CIMAR/CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Rua dos Bragas, 289, 4050-123 Porto, Portugal
| | - C R Gomes
- CIMAR/CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Rua dos Bragas, 289, 4050-123 Porto, Portugal; Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, s/n, 4169-007 Porto, Portugal
| | - C M R Almeida
- CIMAR/CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Rua dos Bragas, 289, 4050-123 Porto, Portugal.
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97
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Shakoor MB, Ali S, Hameed A, Farid M, Hussain S, Yasmeen T, Najeeb U, Bharwana SA, Abbasi GH. Citric acid improves lead (pb) phytoextraction in brassica napus L. by mitigating pb-induced morphological and biochemical damages. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2014; 109:38-47. [PMID: 25164201 DOI: 10.1016/j.ecoenv.2014.07.033] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 07/24/2014] [Accepted: 07/24/2014] [Indexed: 05/15/2023]
Abstract
Phytoextraction is an environmentally friendly and a cost-effective strategy for remediation of heavy metal contaminated soils. However, lower bioavailability of some of the metals in polluted environments e.g. lead (Pb) is a major constraint of phytoextraction process that could be overcome by applying organic chelators. We conducted a glasshouse experiment to evaluate the role of citric acid (CA) in enhancing Pb phytoextraction. Brassica napus L. seedlings were grown in hydroponic media and exposed to various treatments of Pb (50 and 100 μM) as alone or in combination with CA (2.5mM) for six weeks. Pb-induced damage in B. napus toxicity was evident from elevated levels of malondialdehyde (MDA) and H2O2 that significantly inhibited plant growth, biomass accumulation, leaf chlorophyll contents and gas exchange parameters. Alternatively, CA application to Pb-stressed B. napus plants arrested lipid membrane damage by limiting MDA and H2O2 production and by improving antioxidant enzyme activities. In addition, CA significantly increased the Pb accumulation in B. napus plants. The study concludes that CA has a potential to improve Pb phytoextraction without damaging plant growth.
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Affiliation(s)
- Muhammad Bilal Shakoor
- Department of Environmental Sciences Government College University Allama Iqbal Road 38000 Faisalabad, Pakistan
| | - Shafaqat Ali
- Department of Environmental Sciences Government College University Allama Iqbal Road 38000 Faisalabad, Pakistan.
| | - Amjad Hameed
- Nuclear Institute for Agriculture and Biology (NIAB), P.O. Box 128, Jhang road Faisalabad, Pakistan
| | - Mujahid Farid
- Department of Environmental Sciences Government College University Allama Iqbal Road 38000 Faisalabad, Pakistan
| | - Sabir Hussain
- Department of Environmental Sciences Government College University Allama Iqbal Road 38000 Faisalabad, Pakistan
| | - Tahira Yasmeen
- Department of Environmental Sciences Government College University Allama Iqbal Road 38000 Faisalabad, Pakistan
| | - Ullah Najeeb
- Department of Plant and Food Sciences, Faculty of Agriculture and Environment, The University of Sydney, Eveleigh, NSW 2015, Australia
| | - Saima Aslam Bharwana
- Department of Environmental Sciences Government College University Allama Iqbal Road 38000 Faisalabad, Pakistan
| | - Ghulam Hasan Abbasi
- Department of Soil Science, University College of Agriculture and Environmental Sciences, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
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98
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Guarino C, Conte B, Spada V, Arena S, Sciarrillo R, Scaloni A. Proteomic analysis of eucalyptus leaves unveils putative mechanisms involved in the plant response to a real condition of soil contamination by multiple heavy metals in the presence or absence of mycorrhizal/rhizobacterial additives. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:11487-11496. [PMID: 25203592 DOI: 10.1021/es502070m] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Here we report on the growth, accumulation performances of, and leaf proteomic changes in Eucalyptus camaldulensis plants harvested for different periods of time in an industrial, heavy metals (HMs)-contaminated site in the presence or absence of soil microorganism (AMs/PGPRs) additives. Data were compared to those of control counterparts grown in a neighboring nonpolluted district. Plants harvested in the contaminated areas grew well and accumulated HMs in their leaves. The addition of AMs/PGPRs to the polluted soil determined plant growth and metal accumulation performances that surpassed those observed in the control. Comparative proteomics suggested molecular mechanisms underlying plant adaptation to the HMs challenge. Similarly to what was observed in laboratory-scale investigations on other metal hyperaccumulators but not on HMs-sensitive plants, eucalyptus grown in the contaminated areas showed an over-representation of enzymes involved in photosynthesis and the Calvin cycle. AMs/PGPRs addition to the soil increased the activation of these energetic pathways, suggesting the existence of signaling mechanisms that address the energy/reductive power requirement associated with augmented growth performances. HMs-exposed plants presented an over-representation of antioxidant enzymes, chaperones, and proteins involved in glutathione metabolism. While some antioxidant enzymes/chaperones returned to almost normal expression values in the presence of AMs/PGPRs or in plants exposed to HMs for prolonged periods, proteins guaranteeing elevated glutathione levels were constantly over-represented. These data suggest that glutathione (and related phytochelatins) could act as key molecules for ensuring the effective formation of HMs-chelating complexes that are possibly responsible for the observed plant tolerance to metal stresses. Overall, these results suggest potential genetic traits for further selection of phytoremediating plants based on dedicated cloning or breeding programs.
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Affiliation(s)
- Carmine Guarino
- Department of Sciences and Technologies, University of Sannio , 82100 Benevento, Italy
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99
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Ochonogor RO, Atagana HI. Phytoremediation of Heavy Metal Contaminated Soil by Psoralea Pinnata. ACTA ACUST UNITED AC 2014. [DOI: 10.7763/ijesd.2014.v5.524] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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100
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Arunakumara KKIU, Walpola BC, Song JS, Shin MJ, Lee CJ, Yoon MH. Phytoextraction of Heavy Metals Induced by Bioaugmentation of a Phosphate Solubilizing Bacterium. ACTA ACUST UNITED AC 2014. [DOI: 10.5338/kjea.2014.33.3.220] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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