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Co-culturing of microalgae and bacteria in real wastewaters alters indigenous bacterial communities enhancing effluent bioremediation. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102705] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Alterations of endophytic microbial community function in Spartina alterniflora as a result of crude oil exposure. Biodegradation 2022; 33:87-98. [PMID: 35039995 PMCID: PMC10405147 DOI: 10.1007/s10532-021-09968-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 11/18/2021] [Indexed: 11/02/2022]
Abstract
The 2010 Deepwater Horizon disaster remains one of the largest oil spills in history. This event caused significant damage to coastal ecosystems, the full extent of which has yet to be fully determined. Crude oil contains toxic heavy metals and substances such as polycyclic aromatic hydrocarbons that are detrimental to some microbial species and may be used as food and energy resources by others. As a result, oil spills have the potential to cause significant shifts in microbial communities. This study assessed the impact of oil contamination on the function of endophytic microbial communities associated with saltmarsh cordgrass (Spartina alterniflora). Soil samples were collected from two locations in coastal Louisiana, USA: one severely affected by the Deepwater Horizon oil spill and one relatively unaffected location. Spartina alterniflora seedlings were grown in both soil samples in greenhouses, and GeoChip 5.0 was used to evaluate the endophytic microbial metatranscriptome shifts in response to host plant oil exposure. Oil exposure was associated with significant shifts in microbial gene expression in functional categories related to carbon cycling, virulence, metal homeostasis, organic remediation, and phosphorus utilization. Notably, significant increases in expression were observed in genes related to metal detoxification with the exception of chromium, and both significant increases and decreases in expression were observed in functional gene subcategories related to hydrocarbon metabolism. These findings show that host oil exposure elicits multiple changes in gene expression from their endophytic microbial communities, producing effects that may potentially impact host plant fitness.
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Khan AHA, Kiyani A, Mirza CR, Butt TA, Barros R, Ali B, Iqbal M, Yousaf S. Ornamental plants for the phytoremediation of heavy metals: Present knowledge and future perspectives. ENVIRONMENTAL RESEARCH 2021; 195:110780. [PMID: 33539835 DOI: 10.1016/j.envres.2021.110780] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 01/18/2021] [Accepted: 01/19/2021] [Indexed: 05/22/2023]
Abstract
Environmental matrices are polluted with the plethora of contaminants, and among these, the concerns related to heavy metals (HMs) are also included. Due to the low cost in a long-term application and environmental friendliness, the use of biological remediation has gained significant attention in recent decades. The use of ornamental plants (OPs) in the field of phytoremediation is scarcely reported, and the impacts of HMs on OPs have also not been investigated in great depth. The OPs mediated HMs remediation can simultaneously remove contaminants and bring improvement in aesthetics of the site. The biomass of OPs produced after such activities can be used and sold as pot plants, cut flowers, essential oils, perfumes, air fresheners production, metal phytomining, and feedstock in silk production. The OPs also present a lower risk of HMs bioaccumulation compared to crop plants. This review focuses on the current knowledge of HMs toxicity to OPs, their applicability advantages, methods to improve the tolerance of OPs with incremented HMs uptake, challenges in the field, and future application perspectives. The case studies realted to practical application of OPs, from China, Iran, India, Oman, Pakistan, and Turkey, were also discussed. This work fetches the inter-disciplinary features and understanding for the sustainable treatment of HMs in a new novel way, to which no previous review has focused.
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Affiliation(s)
- Aqib Hassan Ali Khan
- Department of Earth & Environmental Sciences, Bahria University (Karachi Campus), Karachi, 75260, Pakistan; Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, 45320, Islamabad, Pakistan
| | - Amna Kiyani
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, 45320, Islamabad, Pakistan; Department of Biosciences, COMSATS University Islamabad, Islamabad Campus, Islamabad, 45550, Pakistan
| | - Cyrus Raza Mirza
- Department of Civil Engineering, College of Engineering, University of Hail, Hail, Saudi Arabia
| | - Tayyab Ashfaq Butt
- Department of Civil Engineering, College of Engineering, University of Hail, Hail, Saudi Arabia
| | - Rocío Barros
- International Research Center in Critical Raw Materials and Advanced Industrial Technologies, Universidad de Burgos, Burgos, 09001, Spain
| | - Basit Ali
- Department of Economics, COMSATS University Islamabad, Islamabad Campus, Islamabad, 45550, Pakistan
| | - Mazhar Iqbal
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, 45320, Islamabad, Pakistan.
| | - Sohail Yousaf
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, 45320, Islamabad, Pakistan.
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Radulović O, Stanković S, Uzelac B, Tadić V, Trifunović-Momčilov M, Lozo J, Marković M. Phenol Removal Capacity of the Common Duckweed ( Lemna minor L.) and Six Phenol-Resistant Bacterial Strains From Its Rhizosphere: In Vitro Evaluation at High Phenol Concentrations. PLANTS 2020; 9:plants9050599. [PMID: 32397144 PMCID: PMC7285011 DOI: 10.3390/plants9050599] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 04/26/2020] [Accepted: 04/28/2020] [Indexed: 02/07/2023]
Abstract
The main topic of this study is the bioremediation potential of the common duckweed, Lemna minor L., and selected rhizospheric bacterial strains in removing phenol from aqueous environments at extremely high initial phenol concentrations. To that end, fluorescence microscopy, MIC tests, biofilm formation, the phenol removal test (4-AAP method), the Salkowski essay, and studies of multiplication rates of sterile and inoculated duckweed in MS medium with phenol (200, 500, 750, and 1000 mg L−1) were conducted. Out of seven bacterial strains, six were identified as epiphytes or endophytes that efficiently removed phenol. The phenol removal experiment showed that the bacteria/duckweed system was more efficient during the first 24 h compared to the sterile duckweed control group. At the end of this experiment, almost 90% of the initial phenol concentration was removed by both groups, respectively. The bacteria stimulated the duckweed multiplication even at a high bacterial population density (>105 CFU mL−1) over a prolonged period of time (14 days). All bacterial strains were sensitive to all the applied antibiotics and formed biofilms in vitro. The dual bacteria/duckweed system, especially the one containing strain 43-Hafnia paralvei C32-106/3, Accession No. MF526939, had a number of characteristics that are advantageous in bioremediation, such as high phenol removal efficiency, biofilm formation, safety (antibiotic sensitivity), and stimulation of duckweed multiplication.
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Affiliation(s)
- Olga Radulović
- Department of Plant Physiology, Institute for Biological Research “Siniša Stanković”–National Institute of the Republic of Serbia, University of Belgrade, 142 Bulevar Despota Stefana, Belgrade 11060, Serbia; (B.U.); (M.T-M.); (M.M.)
- Correspondence:
| | - Slaviša Stanković
- Faculty of Biology, University of Belgrade, 16 Studentski Trg, Belgrade 11000, Serbia; (S.S.); (J.L.)
| | - Branka Uzelac
- Department of Plant Physiology, Institute for Biological Research “Siniša Stanković”–National Institute of the Republic of Serbia, University of Belgrade, 142 Bulevar Despota Stefana, Belgrade 11060, Serbia; (B.U.); (M.T-M.); (M.M.)
| | - Vojin Tadić
- Mining and Metallurgy Institute Bor, 35 Zeleni Bulevar, Bor 19210, Serbia;
| | - Milana Trifunović-Momčilov
- Department of Plant Physiology, Institute for Biological Research “Siniša Stanković”–National Institute of the Republic of Serbia, University of Belgrade, 142 Bulevar Despota Stefana, Belgrade 11060, Serbia; (B.U.); (M.T-M.); (M.M.)
| | - Jelena Lozo
- Faculty of Biology, University of Belgrade, 16 Studentski Trg, Belgrade 11000, Serbia; (S.S.); (J.L.)
| | - Marija Marković
- Department of Plant Physiology, Institute for Biological Research “Siniša Stanković”–National Institute of the Republic of Serbia, University of Belgrade, 142 Bulevar Despota Stefana, Belgrade 11060, Serbia; (B.U.); (M.T-M.); (M.M.)
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Kerry RG, Patra S, Gouda S, Patra JK, Das G. Microbes and Their Role in Drought Tolerance of Agricultural Food Crops. Microb Biotechnol 2018. [DOI: 10.1007/978-981-10-7140-9_12] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Doty SL, Freeman JL, Cohu CM, Burken JG, Firrincieli A, Simon A, Khan Z, Isebrands JG, Lukas J, Blaylock MJ. Enhanced Degradation of TCE on a Superfund Site Using Endophyte-Assisted Poplar Tree Phytoremediation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:10050-10058. [PMID: 28737929 DOI: 10.1021/acs.est.7b01504] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Trichloroethylene (TCE) is a widespread environmental pollutant common in groundwater plumes associated with industrial manufacturing areas. We had previously isolated and characterized a natural bacterial endophyte, Enterobacter sp. strain PDN3, of poplar trees, that rapidly metabolizes TCE, releasing chloride ion. We now report findings from a successful three-year field trial of endophyte-assisted phytoremediation on the Middlefield-Ellis-Whisman Superfund Study Area TCE plume in the Silicon Valley of California. The inoculated poplar trees exhibited increased growth and reduced TCE phytotoxic effects with a 32% increase in trunk diameter compared to mock-inoculated control poplar trees. The inoculated trees excreted 50% more chloride ion into the rhizosphere, indicative of increased TCE metabolism in planta. Data from tree core analysis of the tree tissues provided further supporting evidence of the enhanced rate of degradation of the chlorinated solvents in the inoculated trees. Test well groundwater analyses demonstrated a marked decrease in concentration of TCE and its derivatives from the tree-associated groundwater plume. The concentration of TCE decreased from 300 μg/L upstream of the planted area to less than 5 μg/L downstream of the planted area. TCE derivatives were similarly removed with cis-1,2-dichloroethene decreasing from 160 μg/L to less than 5 μg/L and trans-1,2-dichloroethene decreasing from 3.1 μg/L to less than 0.5 μg/L downstream of the planted trees. 1,1-dichloroethene and vinyl chloride both decreased from 6.8 and 0.77 μg/L, respectively, to below the reporting limit of 0.5 μg/L providing strong evidence of the ability of the endophytic inoculated trees to effectively remove TCE from affected groundwater. The combination of native pollutant-degrading endophytic bacteria and fast-growing poplar tree systems offers a readily deployable, cost-effective approach for the degradation of TCE, and may help mitigate potential transfer up the food chain, volatilization to the atmosphere, as well as direct phytotoxic impacts to plants used in this type of phytoremediation.
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Affiliation(s)
- Sharon L Doty
- University of Washington , Seattle, Washington 98195-2100, United States
| | - John L Freeman
- Intrinsyx Technologies Corporation, NASA Ames Research Park, Moffett Field, California 94035-1000, United States
| | - Christopher M Cohu
- Phytoremediation and Phytomining Consultants United, Grand Junction, Colorado 81507, United States
| | - Joel G Burken
- Department of Civil, Architectural, and Environmental Engineering, Missouri University of Science and Technology , Rolla, Missouri 65409, United States
| | - Andrea Firrincieli
- Dept. for Innovation in Biological, Agro-Food, and Forest Systems, University of Tuscia , Viterbo, Italy
| | - Andrew Simon
- Edenspace Systems Corporation , Purcellville, Virginia 20134, United States
| | - Zareen Khan
- University of Washington , Seattle, Washington 98195-2100, United States
| | - J G Isebrands
- Environmental Forestry Consultants LLC, New London, Wisconsin 54961, United States
| | - Joseph Lukas
- Earth Resources Technology, Inc., Moffett Field, California 94035, United States
| | - Michael J Blaylock
- Edenspace Systems Corporation , Purcellville, Virginia 20134, United States
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Shi Y, Xie H, Cao L, Zhang R, Xu Z, Wang Z, Deng Z. Effects of Cd- and Pb-resistant endophytic fungi on growth and phytoextraction of Brassica napus in metal-contaminated soils. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:417-426. [PMID: 27726080 DOI: 10.1007/s11356-016-7693-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Accepted: 09/12/2016] [Indexed: 05/24/2023]
Abstract
Metal-resistant endophytic fungi from roots improved phytoremediation efficacy of host plants; however, the effects of endophytic fungi from plant aerial parts on host plants are unknown. The aim of this study was to develop a feasible method to screen fungal endophytes from stems and roots of Brassica napus and to investigate effects of the endophytic fungi on growth and phytoremediation efficiency of the plant. Endophytic Fusarium sp. CBRF44, Penicillium sp. CBRF65, and Alternaria sp. CBSF68 with different traits were isolated from roots and stems of rapes grown in a metal-contaminated soil. Fusarium sp. CBRF44 (resistant to 5 mM Cd and 15 mM Pb, isolated from roots) and Alternaria sp. CBSF68 (resistant to 1 mM Cd and 10 mM Pb, isolated from stems) could produce indole-3-acetic acid (IAA) and siderophore; Penicillium sp. CBRF65 (tolerate 2 mM Cd and 20 mM Pb, isolated from roots) could not produce IAA and siderophore but showed the highest phosphate-solubilizing activities. Fusarium sp. CBRF44 and Penicillium sp. CBRF65 significantly increased the rape biomass and promoted the extraction efficacy of Pb and Cd, while Alternaria sp. CBSF68 did not show similar results. Penicillium sp. CBRF65 and Fusarium sp. CBRF44 could be frequently recovered from inoculated rape roots, while Alternaria sp. CBSF68 was scarcely recovered. The results indicate that the colonizing capacity of endophytic fungi in roots is important to improve phytoremediation efficacy of host plants.
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Affiliation(s)
- Yanan Shi
- School of Basic Courses, Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China
| | - Huarong Xie
- School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China
| | - Lixiang Cao
- School of Life Sciences, Sun Yat-Sen University, Guangzhou, 510275, People's Republic of China
| | - Renduo Zhang
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-Sen University, Guangzhou, 510275, People's Republic of China
| | - Zaichao Xu
- School of Basic Courses, Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China
| | - Zhuoya Wang
- School of Basic Courses, Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China
| | - Zujun Deng
- School of Basic Courses, Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, 510006, People's Republic of China.
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