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Nan Y, Zhu N, Sun S, Lei T, Guo X, Leng F, Yang M, Chen J, Wang Y. Degradation of petroleum hydrocarbon contaminants by Rhodococcus erythropolis KB1 synergistic with alfalfa (Medicago sativa L.). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:35332-35352. [PMID: 38727971 DOI: 10.1007/s11356-024-33227-8] [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: 12/20/2023] [Accepted: 04/02/2024] [Indexed: 05/30/2024]
Abstract
Petroleum hydrocarbons are a stubborn pollutant that is difficult to degrade globally, and plant-microbial degradation is the main way to solve this type of pollutant. In this study, the physiological and ecological responses of alfalfa to petroleum hydrocarbons in different concentrations of petroleum hydrocarbon-contaminated soil with KB1 (Rhodococcus erythropolis) were analyzed and determined by laboratory potting techniques. The growth of alfalfa (CK) and alfalfa with KB1 (JZ) in different concentrations of petroleum hydrocarbons contaminated soil was compared and analyzed. The results of the CK group showed that petroleum hydrocarbons could significantly affect the activity of alfalfa antioxidant enzyme system, inhibit the development of alfalfa roots and the normal growth of plants, especially in the high-concentration group. KB1 strain had the ability to produce IAA, form biofilm, fix nitrogen, produce betaine and ACC deaminase, and the addition of KB1 could improve the growth traits of alfalfa in the soil contaminated with different concentrations of petroleum hydrocarbons, the content of soluble sugars in roots, and the stress resistance and antioxidant enzyme activities of alfalfa. In addition, the degradation kinetics of the strain showed that the degradation rate of petroleum could reach 75.2% after soaking with KB1. Furthermore, KB1 can efficiently degrade petroleum hydrocarbons in advance and significantly alleviate the damage of high concentration of petroleum hydrocarbons to plant roots. The results showed that KB1 strains and alfalfa plants could effectively enhance the degradation of petroleum hydrocarbons, which provided new ideas for improving bioremediation strategies.
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Affiliation(s)
- Yan Nan
- School of Life Science and Engineering, Lanzhou University of Technology, Langongping Road 287, Qilihe District, Lanzhou, 730050, Gansu Province, China
| | - Ning Zhu
- School of Life Science and Engineering, Lanzhou University of Technology, Langongping Road 287, Qilihe District, Lanzhou, 730050, Gansu Province, China
- School of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, 730050, China
| | - Shangchen Sun
- Lanzhou Resources & Environment Voc-Tech University, Lanzhou, 730050, China
| | - Tianzhu Lei
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730050, China
| | - Xiaopeng Guo
- School of Life Science and Engineering, Lanzhou University of Technology, Langongping Road 287, Qilihe District, Lanzhou, 730050, Gansu Province, China
| | - Feifan Leng
- School of Life Science and Engineering, Lanzhou University of Technology, Langongping Road 287, Qilihe District, Lanzhou, 730050, Gansu Province, China
| | - Mingjun Yang
- School of Life Science and Engineering, Lanzhou University of Technology, Langongping Road 287, Qilihe District, Lanzhou, 730050, Gansu Province, China
| | - Jixiang Chen
- School of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou, 730050, China
| | - Yonggang Wang
- School of Life Science and Engineering, Lanzhou University of Technology, Langongping Road 287, Qilihe District, Lanzhou, 730050, Gansu Province, China.
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Žaltauskaitė J, Meištininkas R, Dikšaitytė A, Degutytė-Fomins L, Mildažienė V, Naučienė Z, Žūkienė R, Koga K. Heavy fuel oil-contaminated soil remediation by individual and bioaugmentation-assisted phytoremediation with Medicago sativa and with cold plasma-treated M. sativa. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:30026-30038. [PMID: 38594559 DOI: 10.1007/s11356-024-33182-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 03/28/2024] [Indexed: 04/11/2024]
Abstract
Developing an optimal environmentally friendly bioremediation strategy for petroleum products is of high interest. This study investigated heavy fuel oil (HFO)-contaminated soil (4 and 6 g kg-1) remediation by individual and combined bioaugmentation-assisted phytoremediation with alfalfa (Medicago sativa L.) and with cold plasma (CP)-treated M. sativa. After 14 weeks of remediation, HFO removal efficiency was in the range between 61 and 80% depending on HFO concentration and remediation technique. Natural attenuation had the lowest HFO removal rate. As demonstrated by growth rate and biomass acquisition, M. sativa showed good tolerance to HFO contamination. Cultivation of M. sativa enhanced HFO degradation and soil quality improvement. Bioaugmentation-assisted phytoremediation was up to 18% more efficient in HFO removal through alleviated HFO stress to plants, stimulated plant growth, and biomass acquisition. Cold plasma seed treatment enhanced HFO removal by M. sativa at low HFO contamination and in combination with bioaugmentation it resulted in up to 14% better HFO removal compared to remediation with CP non-treated and non-bioaugmented M. sativa. Our results show that the combination of different remediation techniques is an effective soil rehabilitation strategy to remove HFO and improve soil quality. CP plant seed treatment could be a promising option in soil clean-up and valorization.
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Affiliation(s)
- Jūratė Žaltauskaitė
- Laboratory of Heat Equipment Research and Testing, Lithuanian Energy Institute, Breslaujos 3, 44404, Kaunas, Lithuania.
- Department of Environmental Sciences, Vytautas Magnus University, Universiteto 10, Akademija, Kaunas District, Lithuania.
| | - Rimas Meištininkas
- Laboratory of Heat Equipment Research and Testing, Lithuanian Energy Institute, Breslaujos 3, 44404, Kaunas, Lithuania
| | - Austra Dikšaitytė
- Department of Environmental Sciences, Vytautas Magnus University, Universiteto 10, Akademija, Kaunas District, Lithuania
| | - Laima Degutytė-Fomins
- Department of Environmental Sciences, Vytautas Magnus University, Universiteto 10, Akademija, Kaunas District, Lithuania
| | - Vida Mildažienė
- Department of Environmental Sciences, Vytautas Magnus University, Universiteto 10, Akademija, Kaunas District, Lithuania
| | - Zita Naučienė
- Department of Environmental Sciences, Vytautas Magnus University, Universiteto 10, Akademija, Kaunas District, Lithuania
| | - Rasa Žūkienė
- Department of Environmental Sciences, Vytautas Magnus University, Universiteto 10, Akademija, Kaunas District, Lithuania
| | - Kazunori Koga
- Center of Plasma Nano-Interface Engineering, Kyushu University, Fukuoka, 819-0395, Japan
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Qi J, Fu D, Wang X, Zhang F, Ma C. The effect of alfalfa cultivation on improving physicochemical properties soil microorganisms community structure of grey desert soil. Sci Rep 2023; 13:13747. [PMID: 37612457 PMCID: PMC10447519 DOI: 10.1038/s41598-023-41005-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 08/20/2023] [Indexed: 08/25/2023] Open
Abstract
Planting alfalfa in grey desert soil can have significant effects on soil nutrient levels, microbial communities, and overall soil improvement. High-throughput sequencing technology was used to explore the relationship between the rhizosphere microbial community structure of grey desert soil planted with different alfalfa varieties (Aohan, WL525HQ, Knight2, Kangsai, Victoria, and WL712), alfalfa characteristics and rhizosphere soil physicochemical properties. Alfalfa planting increased the nitrogen and organic matter in the grey desert soil, and the effects in Victoria, Kangsai, and Aohan were relatively better than those in the unplanted areas and other alfalfa areas. The Chao1 and Shannon indexes showed that the diversity and relative abundance of bacteria and fungi in Kangsai were significantly higher than those in the unplanted areas and other alfalfa areas. Redundancy analysis showed that available nitrogen and phosphorus, as well as fresh weight, significantly affected the changes in fungal and bacterial communities. Variance partitioning analysis showed that soil and alfalfa growth characteristics explained 50.04% and 51.58% of the structural changes in the bacteria and fungi, respectively. Therefore, planting alfalfa changed the community structure of bacteria and fungi, as well as the content of soil nutrients, and different varieties of alfalfa had different effects on soil improvement.
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Affiliation(s)
- Jiangjiao Qi
- College of Animal Science & Technology, Shihezi University, Shihezi, 832003, Xinjiang, China
| | - Dongqing Fu
- College of Animal Science & Technology, Shihezi University, Shihezi, 832003, Xinjiang, China
| | - Xuzhe Wang
- College of Animal Science & Technology, Shihezi University, Shihezi, 832003, Xinjiang, China
| | - Fanfan Zhang
- College of Animal Science & Technology, Shihezi University, Shihezi, 832003, Xinjiang, China
| | - Chunhui Ma
- College of Animal Science & Technology, Shihezi University, Shihezi, 832003, Xinjiang, China.
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Fang Z, Liu J, Wu X, Zhang Y, Jia H, Shi Y. Full-length transcriptome of in Medicago sativa L. roots in response to drought stress. Front Genet 2023; 13:1086356. [PMID: 36685877 PMCID: PMC9848396 DOI: 10.3389/fgene.2022.1086356] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 12/14/2022] [Indexed: 01/05/2023] Open
Abstract
Background: Alfalfa (Medicago sativa L.), serves as a legume with high drought tolerance, is a major forage crop with a high biomass of production. However, the molecular mechanism of Alfalfa in response to drought stress are still unclear. Results: We constructed the first full-length transcriptome for Alfalfa root. 21.53Gb clean data were obtained by further data filtering, in which incorporate 566,076 reads of Insert (ROI), and 409,291 full length reads non-Chimeric (FLNC) sequences. Combined with second-generation sequencing (SGS), there were 2615, 6011, and 4617 differentially expressed genes (DEGs) in three comparisons. KEGG pathway analysis showed enrichment of ribosome, glutathione metabolism, and biosynthesis of amino acids are among the DEGs. The majority of transcription factors (TFs) from DEGs were AP2/ERF-ERF (37), C2H2 (32), and bHLH (22) bZIP (22), followed by C3H (19), MYB (18), WRKY (18), GRAS (16), and NAC (15). 32 C2H2 genes were differentially expressed in three groups. In addition, TFs annotated as C3H (19), MYB (18), GRAS (16), and NAC (15) also changed significantly in expression in the three comparisons. We found 24 genes participate in the abscisic acid (ABA) and auxin hormone signaling pathway in response to drought stress, and monitored the expression patterns of these related genes. Conclusion: The present study enhanced our understanding of the genetic diversity and complexity, and provides greater insight into the fundamental transcriptome reprogramming of Alfalfa under drought.
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Hydrolipidic Characteristics and Clinical Efficacy of a Dermocosmetic Formulation for the Improvement of Homeostasis on Oily Mature Skin. LIFE (BASEL, SWITZERLAND) 2022; 13:life13010087. [PMID: 36676036 PMCID: PMC9861166 DOI: 10.3390/life13010087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 12/24/2022] [Accepted: 12/26/2022] [Indexed: 12/29/2022]
Abstract
BACKGROUND Although the scientific literature associates mature skin with dry skin and the secretion of sebum on the face decreases over the years, in tropical countries, such as Brazil, mature skin can still present oily characteristics. Thus, the knowledge of the hydrophilic characteristics of mature skin is fundamental to help the development of more effective treatments for this skin type. In this context, the study aimed to evaluate the hydrophilic characteristics and the clinical efficacy of a cosmetic formulation for mature skin added with alfalfa and lentil extracts by using biophysical and skin imaging techniques. METHODS Twenty-eight healthy females aged between 45 and 59 years were enrolled. Measurements of the stratum corneum water content, sebum content, transepidermal water loss, skin microrelief, and pores count were performed before and after the 28-day formulation application. RESULTS The mature skin presented as oily with wrinkles and pores. The proposed formulation significantly reduced the sebum content and the number of fine and large pores and improved skin microrelief and hydration after a 28-day period of the application when compared to the vehicle. CONCLUSIONS The proposed formulation was effective in oily mature skin treatment, improving its general skin aging and oiliness conditions, and reducing pores count in just 28 days.
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Kuzina E, Mukhamatdyarova S, Sharipova Y, Makhmutov A, Belan L, Korshunova T. Influence of Bacteria of the Genus Pseudomonas on Leguminous Plants and Their Joint Application for Bioremediation of Oil Contaminated Soils. PLANTS (BASEL, SWITZERLAND) 2022; 11:3396. [PMID: 36501436 PMCID: PMC9737819 DOI: 10.3390/plants11233396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/25/2022] [Accepted: 12/01/2022] [Indexed: 06/17/2023]
Abstract
The modern approach to the creation of biological products to stimulate plant growth is based on the study of specific inter-bacterial interactions. This study describes the impact that the introduction of strains of the genus Pseudomonas has on annual and perennial leguminous plants and the ecosystem of the leguminous plant-the indigenous microbial community. The objects of research under the conditions of vegetation experiments were plants of field peas (Pisum sativum L.), white lupine (Lupinus albus L.), chickpea (Cicer arietinum L.), alfalfa (Medicago sativa subsp. varia (Martyn) Arcang.), and white sweet clover (Melilotus albus Medik.). For the treatment of plant seeds, a liquid culture of strains of growth-stimulating bacteria Pseudomonas koreensis IB-4, and P. laurentiana ANT 17 was used. The positive effect of the studied strains on the germination, growth and development of plants was established. There was no inhibitory effect of inoculants on rhizobia; on the contrary, an increase in nodule formation was observed. The possibility of recultivation of oil-contaminated soil using chickpea and alfalfa as phytomeliorants and growth-stimulating strains P. koreensis IB-4, P. laurentiana ANT 17 as inoculants was evaluated. It is proved that seed treatment improved the morphological parameters of plants, as well as the efficiency of oil destruction.
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Affiliation(s)
- Elena Kuzina
- Ufa Institute of Biology, Ufa Federal Research Centre, Russian Academy of Sciences, 450054 Ufa, Russia
- Department of Environmental Protection and Prudent Exploitation of Natural Resources, Ufa State Petroleum Technological University, 450044 Ufa, Russia
| | - Svetlana Mukhamatdyarova
- Ufa Institute of Biology, Ufa Federal Research Centre, Russian Academy of Sciences, 450054 Ufa, Russia
- Department of Environmental Protection and Prudent Exploitation of Natural Resources, Ufa State Petroleum Technological University, 450044 Ufa, Russia
| | - Yuliyana Sharipova
- Ufa Institute of Biology, Ufa Federal Research Centre, Russian Academy of Sciences, 450054 Ufa, Russia
- Department of Environmental Protection and Prudent Exploitation of Natural Resources, Ufa State Petroleum Technological University, 450044 Ufa, Russia
| | - Ainur Makhmutov
- Department of Environmental Protection and Prudent Exploitation of Natural Resources, Ufa State Petroleum Technological University, 450044 Ufa, Russia
| | - Larisa Belan
- Department of Environmental Protection and Prudent Exploitation of Natural Resources, Ufa State Petroleum Technological University, 450044 Ufa, Russia
| | - Tatyana Korshunova
- Ufa Institute of Biology, Ufa Federal Research Centre, Russian Academy of Sciences, 450054 Ufa, Russia
- Department of Environmental Protection and Prudent Exploitation of Natural Resources, Ufa State Petroleum Technological University, 450044 Ufa, Russia
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Dubrovskaya E, Golubev S, Muratova A, Pozdnyakova N, Bondarenkova A, Sungurtseva I, Panchenko L, Turkovskaya O. Effect of remediation techniques on petroleum removal from and on biological activity of a drought-stressed Kastanozem soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:84702-84713. [PMID: 35788480 DOI: 10.1007/s11356-022-21742-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 06/26/2022] [Indexed: 06/15/2023]
Abstract
Many petroleum extraction and refinement plants are located in arid climates. Therefore, the remediation of petroleum-polluted soils is complicated by the low moisture conditions. We ran a 70-day experiment to test the efficacy of various combining of remediation treatments with sorghum, yellow medick, and biochar to remove petroleum from and change the biological activity of Kastanozem, a soil typical of the dry steppes and semideserts of the temperate zone. At normal moisture, the maximum petroleum-degradation rate (40%) was obtained with sorghum-biochar. At low moisture, the petroleum-degradation rate was 22 and 30% with yellow medick alone and with yellow medick - sorghum, respectively. Biochar and the biochar-plant interaction had little effect on soil remediation. Both plants promoted the numbers of soil microbes in their rhizosphere: yellow medick promoted mostly hydrocarbon-oxidizing microorganisms, whereas sorghum promoted both hydrocarbon-oxidizing and total heterotrophic microorganisms. Low moisture did not limit microbial development. In the rhizosphere of sorghum, dehydrogenase and urease activities were maximal at normal moisture, whereas in the rhizosphere of yellow medick, they were maximal at low moisture. Peroxidase activity was promoted by the plants in unpolluted soil and was close to the control values in polluted soil. Biochar and the biochar-plant interaction did not noticeably affect the biological activity of the soil.
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Affiliation(s)
- Ekaterina Dubrovskaya
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, pr. Entuziastov 13, Saratov, 410049, Russia.
| | - Sergey Golubev
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, pr. Entuziastov 13, Saratov, 410049, Russia
| | - Anna Muratova
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, pr. Entuziastov 13, Saratov, 410049, Russia
| | - Natalia Pozdnyakova
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, pr. Entuziastov 13, Saratov, 410049, Russia
| | - Anastasia Bondarenkova
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, pr. Entuziastov 13, Saratov, 410049, Russia
| | - Irina Sungurtseva
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, pr. Entuziastov 13, Saratov, 410049, Russia
| | - Leonid Panchenko
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, pr. Entuziastov 13, Saratov, 410049, Russia
| | - Olga Turkovskaya
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences, pr. Entuziastov 13, Saratov, 410049, Russia
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Kalita M, Chakravarty P, Deka H. Understanding biochemical defense and phytoremediation potential of Leucas aspera in crude oil polluted soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:57579-57590. [PMID: 35355178 DOI: 10.1007/s11356-022-19922-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Accepted: 03/22/2022] [Indexed: 06/14/2023]
Abstract
The phytoremediation potential and enzymatic defense of a medicinal herb Leucas aspera was studied in the crude oil contaminated soil. The productivity, antioxidants, and phytochemical and functional group profiles of the plant species in stress conditions were investigated. Besides, changes in enzymes, beneficial bacterial population, and physico-chemical and total oil and grease (TOG) profiles in the contaminated soil were also studied. The results showed improvement in physico-chemical conditions, increase in beneficial bacterial population (4.1-5.4 folds), and decrease in TOG (31.3%) level of the contaminated soil by end of the experimental trials. The L. aspera treated contaminated soil showed enhancement in dehydrogenase (32.3%), urease (102.8%), alkaline phosphatase (174.4%), catalase (68.5%), amylase (76.16%), and cellulase (23.6%) activities by end of the experimental trials. Furthermore, there were significant variations in leaf area index, chlorophyll, and biomass contents of the experimental plant as against the initial level and control. Besides, the significant reduction in IC50 values (24-27.4%) of L. aspera samples grown in contaminated soil confirms the strong antioxidant enzymatic defense of the plant species against the crude oil associated abiotic stress. The Fourier-transform infrared (FT-IR) analysis confirmed the uptake and metabolism of aliphatic hydrocarbons, aldehydes, alkyl halides, and nitro compounds by the experimental plant from the contaminated soil.
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Affiliation(s)
- Meghali Kalita
- Ecology and Environmental Remediation Laboratory, Department of Botany, Gauhati University, Guwahati-14, Assam, India
| | - Paramita Chakravarty
- Ecology and Environmental Remediation Laboratory, Department of Botany, Gauhati University, Guwahati-14, Assam, India
| | - Hemen Deka
- Ecology and Environmental Remediation Laboratory, Department of Botany, Gauhati University, Guwahati-14, Assam, India.
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Muratova A, Lyubun Y, Sungurtseva I, Turkovskaya O, Nurzhanova A. Physiological and biochemical characteristic of Miscanthus × giganteus grown in heavy metal - oil sludge co-contaminated soil. J Environ Sci (China) 2022; 115:114-125. [PMID: 34969442 DOI: 10.1016/j.jes.2021.07.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 07/13/2021] [Accepted: 07/13/2021] [Indexed: 06/14/2023]
Abstract
The effect of oil sludge and zinc, present in soil both separately and as a mixture on the physiological and biochemical parameters of Miscanthus × giganteus plant was examined in a pot experiment. The opposite effect of pollutants on the accumulation of plant biomass was established: in comparison with uncontaminated control the oil sludge increased, and Zn reduced the root and shoot biomass. Oil sludge had an inhibitory effect on the plant photosynthetic apparatus, which intensified in the presence of Zn. The specific antioxidant response of M. × giganteus to the presence of both pollutants was a marked increase in the activity of superoxide dismutase (mostly owing to oil sludge) and glutathione-S-transferase (mostly owing to zinc) in the shoots. The participation of glutathione-S-transferase in the detoxification of both the organic and the inorganic pollutants was assumed. Zn inhibited the activity of laccase-like oxidase, whereas oil sludge promoted laccase and ascorbate oxidase activities. This finding suggests that these enzymes play a part in the oxidative detoxification of the organic pollutаnt. With both pollutants used jointly, Zn accumulation in the roots increased 6-fold, leading to increase in the efficiency of soil clean-up from the metal. In turn, Zn did not significantly affect the soil clean-up from oil sludge. This study shows for the first time the effect of co-contamination of soil with oil sludge and Zn on the physiological and biochemical characteristics of the bioenergetic plant M. × giganteus. The data obtained are important for understanding the mechanisms of phytoremediation with this plant.
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Affiliation(s)
- Anna Muratova
- Institute of Biochemistry and Physiology of Plants and Microorganisms RAS, Saratov 410015, Russia.
| | - Yelena Lyubun
- Institute of Biochemistry and Physiology of Plants and Microorganisms RAS, Saratov 410015, Russia
| | - Irina Sungurtseva
- Institute of Biochemistry and Physiology of Plants and Microorganisms RAS, Saratov 410015, Russia
| | - Olga Turkovskaya
- Institute of Biochemistry and Physiology of Plants and Microorganisms RAS, Saratov 410015, Russia
| | - Asil Nurzhanova
- Institute of Plant Biology and Biotechnology, Almaty 050040, Kazakhstan
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Golubev SN, Muratova AY, Panchenko LV, Shchyogolev SY, Turkovskaya OV. Mycolicibacterium sp. strain PAM1, an alfalfa rhizosphere dweller, catabolizes PAHs and promotes partner-plant growth. Microbiol Res 2021; 253:126885. [PMID: 34624611 DOI: 10.1016/j.micres.2021.126885] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 08/10/2021] [Accepted: 09/27/2021] [Indexed: 02/07/2023]
Abstract
This research was focused on the isolation and characterization of a PAH-catabolizing mycobacterial strain from the petroleum hydrocarbon-contaminated rhizosphere of alfalfa, as well as on revealing some points of interaction between the microorganism and the plant. Mycolicibacterium sp. PAM1, a pyrene degrader isolated from the niche of interest to us, can catabolize fluoranthene, anthracene, fluorene, and phenanthrene. On the basis of curves of PAM1 growth with different PAHs as the sole carbon sources and on the basis of PAH-degradation rates, we found that pollutant availability to the strain decreased in the sequence phenanthrene > fluorene > fluoranthene ∼ pyrene > anthracene. For each PAH, the catabolic products were identified. PAM1 was found to have the functional genes nidA and nidB. New data modeling the 2D and 3D structures, intrinsic structural disorder, and molecular dynamics of the nidA and nidB gene products were obtained. The identified genes and intermediates of pyrene degradation indicate that PAM1 has a PAH catabolic pathway that is peculiar to known mycobacterial pyrene degraders. PAM1 utilized some components of alfalfa root exudates as nutrients and promoted plant growth. The use of mycobacterial partners of alfalfa is attractive for enhancing the phytoremediation of PAH-contaminated soils.
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Affiliation(s)
- Sergey N Golubev
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences (IBPPM RAS), 13 Prospekt Entuziastov, Saratov 410049, Russian Federation.
| | - Anna Yu Muratova
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences (IBPPM RAS), 13 Prospekt Entuziastov, Saratov 410049, Russian Federation
| | - Leonid V Panchenko
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences (IBPPM RAS), 13 Prospekt Entuziastov, Saratov 410049, Russian Federation
| | - Sergey Yu Shchyogolev
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences (IBPPM RAS), 13 Prospekt Entuziastov, Saratov 410049, Russian Federation
| | - Olga V Turkovskaya
- Institute of Biochemistry and Physiology of Plants and Microorganisms, Russian Academy of Sciences (IBPPM RAS), 13 Prospekt Entuziastov, Saratov 410049, Russian Federation
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Kuzina E, Rafikova G, Vysotskaya L, Arkhipova T, Bakaeva M, Chetverikova D, Kudoyarova G, Korshunova T, Chetverikov S. Influence of Hydrocarbon-Oxidizing Bacteria on the Growth, Biochemical Characteristics, and Hormonal Status of Barley Plants and the Content of Petroleum Hydrocarbons in the Soil. PLANTS 2021; 10:plants10081745. [PMID: 34451788 PMCID: PMC8400625 DOI: 10.3390/plants10081745] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/14/2021] [Accepted: 08/18/2021] [Indexed: 11/18/2022]
Abstract
Much attention is paid to the relationship between bacteria and plants in the process of the bioremediation of oil-contaminated soils, but the effect of petroleum degrading bacteria that synthesize phytohormones on the content and distribution of these compounds in plants is poorly studied. The goal of the present field experiment was to study the effects of hydrocarbon-oxidizing bacteria that produce auxins on the growth, biochemical characteristics, and hormonal status of barley plants in the presence of oil, as well as assessing the effect of bacteria and plants separately and in association with the content of oil hydrocarbons in the soil. The treatment of plants with strains of Enterobacter sp. UOM 3 and Pseudomonas hunanensis IB C7 led to an increase in the length and mass of roots and shoots and the leaf surface index, and an improvement in some parameters of the elements of the crop structure, which were suppressed by the pollutant. The most noticeable effect of bacteria on the plant hormonal system was a decrease in the accumulation of abscisic acid. The data obtained indicate that the introduction of microorganisms weakened the negative effects on plants under abiotic stress caused by the presence of oil. Plant-bacteria associations were more effective in reducing the content of hydrocarbons in the soil and increasing its microbiological activity than when either organism was used individually.
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Gómez-Sagasti MT, Garbisu C, Urra J, Míguez F, Artetxe U, Hernández A, Vilela J, Alkorta I, Becerril JM. Mycorrhizal-Assisted Phytoremediation and Intercropping Strategies Improved the Health of Contaminated Soil in a Peri-Urban Area. FRONTIERS IN PLANT SCIENCE 2021; 12:693044. [PMID: 34276742 PMCID: PMC8283827 DOI: 10.3389/fpls.2021.693044] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 05/19/2021] [Indexed: 06/13/2023]
Abstract
Soils of abandoned and vacant lands in the periphery of cities are frequently subjected to illegal dumping and can undergo degradation processes such as depletion of organic matter and nutrients, reduced biodiversity, and the presence of contaminants, which may exert an intense abiotic stress on biological communities. Mycorrhizal-assisted phytoremediation and intercropping strategies are highly suitable options for remediation of these sites. A two-year field experiment was conducted at a peri-urban site contaminated with petroleum hydrocarbons and polychlorinated biphenyls, to assess the effects of plant growth (spontaneous plant species, Medicago sativa, and Populus × canadensis, alone vs. intercropped) and inoculation of a commercial arbuscular mycorrhizal and ectomycorrhizal inoculum. Contaminant degradation, plant performance, and biodiversity, as well as a variety of microbial indicators of soil health (microbial biomass, activity, and diversity parameters) were determined. The rhizosphere bacterial and fungal microbiomes were assessed by measuring the structural diversity and composition via amplicon sequencing. Establishment of spontaneous vegetation led to greater plant and soil microbial diversity. Intercropping enhanced the activity of soil enzymes involved in nutrient cycling. The mycorrhizal treatment was a key contributor to the establishment of intercropping with poplar and alfalfa. Inoculated and poplar-alfalfa intercropped soils had a higher microbial abundance than soils colonized by spontaneous vegetation. Our study provided evidence of the potential of mycorrhizal-assisted phytoremediation and intercropping strategies to improve soil health in degraded peri-urban areas.
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Affiliation(s)
| | - Carlos Garbisu
- Department of Conservation of Natural Resources, NEIKER, Basque Research and Technology Alliance (BRTA), Derio, Spain
| | - Julen Urra
- Department of Conservation of Natural Resources, NEIKER, Basque Research and Technology Alliance (BRTA), Derio, Spain
| | - Fátima Míguez
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Unai Artetxe
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Antonio Hernández
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Juan Vilela
- Centro de Estudios Ambientales, Vitoria-Gasteiz, Spain
| | - Itziar Alkorta
- Department of Biochemistry and Molecular Biology, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - José M. Becerril
- Department of Plant Biology and Ecology, University of the Basque Country (UPV/EHU), Leioa, Spain
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Eze MO, George SC, Hose GC. Dose-response analysis of diesel fuel phytotoxicity on selected plant species. CHEMOSPHERE 2021; 263:128382. [PMID: 33297285 DOI: 10.1016/j.chemosphere.2020.128382] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 09/13/2020] [Accepted: 09/17/2020] [Indexed: 06/12/2023]
Abstract
As an ecotoxicological tool, bioassays are an effective screening tool to eliminate plants sensitive to the contaminant of interest, and thereby reduce the number of plant species requiring further study. We conducted a bioassay analysis of fifteen plant species to determine their tolerance to diesel fuel toxicity. Dose-response analysis revealed that increasing diesel fuel concentrations in the soil generally led to a monotonically decreasing biomass in 13 species (P < 0.001), with EC10 values (±SE) ranging from 0.36 ± 0.18 g/kg to 12.67 ± 2.13 g/kg. On the other hand, hydrocarbons had a statistically significant hormetic influence on Medicago sativa (f = 3.90 ± 1.08; P < 0.01). The EC10 and EC50 values (±SE) from the fitted hormetic model were 15.33 ± 1.47 g/kg and 26.89 ± 2.00 g/kg, respectively. While previous studies have shown M. sativa's tolerance of hydrocarbon toxicity, this is the first attempt to describe diesel fuel-induced hormesis in M. sativa using the Cedergreen-Ritz-Streibig model. This study thus shows that hormesis cannot be ignored in plant toxicology research, and that when present, an appropriate statistical model is necessary to avoid drawing wrong conclusions.
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Affiliation(s)
- Michael O Eze
- Department of Earth and Environmental Sciences and MQ Marine Research Centre, Macquarie University, Sydney, NSW, 2109, Australia; Department of Genomic and Applied Microbiology and Goettingen Genomics Laboratory, Georg-August University of Goettingen, Germany.
| | - Simon C George
- Department of Earth and Environmental Sciences and MQ Marine Research Centre, Macquarie University, Sydney, NSW, 2109, Australia
| | - Grant C Hose
- Department of Biological Sciences, Macquarie University, Sydney, NSW, 2109, Australia
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Eze MO, Hose GC, George SC. Assessing the Effect of Diesel Fuel on the Seed Viability and Germination of Medicago sativa Using the Event-Time Model. PLANTS (BASEL, SWITZERLAND) 2020; 9:E1062. [PMID: 32825133 PMCID: PMC7570341 DOI: 10.3390/plants9091062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/14/2020] [Accepted: 08/18/2020] [Indexed: 11/16/2022]
Abstract
The remediation of contaminated sites using plant-based techniques has gained increasing attention in recent decades. However, information on the effects of contaminant imbibition on seed viability and germination rates are often lacking in the literature. To this end, our research investigated, by means of an event-time model, the effect of diesel fuel imbibition on the seed viability and germination rate of Medicago sativa, a plant species with great potential for remediation of organic contaminants. The event-time model provided an accurate and biologically relevant method for analysing germination data. Our results reveal that the direct imbibition of diesel fuel by M. sativa seeds for ≤48 h, or their exposure to soil diesel fuel concentrations of 0-10 g/kg diesel fuel, affects their germination rates, as shown by increasing t50 values from 90.6 (±2.78) to 114.2 (±2.67) hours, without significantly affecting seed viability. On the other hand, diesel fuel imbibition of longer duration, or the exposure of M. sativa seeds to ≥20 g/kg diesel fuel-contaminated soils, leads to no further effect on time to seed emergence. Instead, these conditions compromise seed viability, resulting in a decrease in the proportion of germinated seeds from 0.91 (±0.03) in 10 g/kg diesel fuel contaminated soil to 0.84 (±0.04) and 0.70 (±0.05) in 20 and 30 g/kg diesel fuel-contaminated soils, respectively. The fact that low concentrations of diesel fuel and 0-48 h of direct imbibition delayed seed emergence without adversely affecting the percentage of viable seeds suggests that this inhibitory effect on germination at low diesel fuel exposure could be attributed more to physical constraints rather than biological damage on the seeds. The models used in this study provide an accurate and biologically relevant method for the analyses of germination data. This is vital since expensive germination experiments, be it in the field of toxicology or agriculture, deserve to be accurately analysed.
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Affiliation(s)
- Michael O. Eze
- Department of Genomic and Applied Microbiology and Goettingen Genomic Laboratory, Georg-August University of Goettingen, 37077 Goettingen, Germany
- Department of Earth and Environmental Sciences and MQ Marine Research Centre, Macquarie University, Sydney, NSW 2109, Australia;
| | - Grant C. Hose
- Department of Biological Sciences, Macquarie University, Sydney, NSW 2109, Australia;
| | - Simon C. George
- Department of Earth and Environmental Sciences and MQ Marine Research Centre, Macquarie University, Sydney, NSW 2109, Australia;
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Hussain I, Puschenreiter M, Gerhard S, Sani SGAS, Khan WUD, Reichenauer TG. Differentiation between physical and chemical effects of oil presence in freshly spiked soil during rhizoremediation trial. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:18451-18464. [PMID: 31044381 PMCID: PMC6570674 DOI: 10.1007/s11356-019-04819-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 03/07/2019] [Indexed: 05/05/2023]
Abstract
Petroleum contamination and its remediation via plant-based solutions have got increasing attention by environmental scientists and engineers. In the current study, the physiological and growth responses of two diesel-tolerant plant species (tolerance limit: 1500-2000 mg/kg), Italian ryegrass (Lolium multiflorum) and Birdsfoot trefoil (Lotus corniculatus), have been investigated in vegetable oil- and diesel oil-amended soils. A long-term (147-day) greenhouse pot experiment was conducted to differentiate the main focus of the study: physical and chemical effects of oil (vegetable and diesel) in freshly spiked soils via evaluating the plant performance and hydrocarbon degradation. Moreover, plant performance was evaluated in terms of seed germination, plant shoot biomass, physiological parameters, and root biomass. Addition of both diesel oil and vegetable oil in freshly spiked soils showed deleterious effects on seedling emergence, root/shoot biomass, and chlorophyll content of grass and legume plants. Italian ryegrass showed more sensitivity in terms of germination rate to both vegetable and diesel oil as compared to non-contaminated soils while Birdsfoot trefoil reduced the germination rate only in diesel oil-impacted soils. The results of the current study suggest that both physical and chemical effects of oil pose negative effects of plant growth and root development. This observation may explain the phenomenon of reduced plant growth in aged/weathered contaminated soils during rhizoremediation experiments.
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Affiliation(s)
- Imran Hussain
- AIT Austrian Institute of Technology, Centre for Energy, Environmental Resources and Technologies, Tulln, Austria.
- Department of Molecular Systems Biology, Faculty of Life sciences, University of Vienna, Vienna, Austria.
- Department of Natural Resources and Environmental Engineering, Bioenergy and Environmental Remediation Lab (BERL), Hanyang, South Korea.
| | - Markus Puschenreiter
- Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences Vienna, Konrad Lorenz Straße 24, A-3430, Tulln, Austria
| | - Soja Gerhard
- AIT Austrian Institute of Technology, Centre for Energy, Environmental Resources and Technologies, Tulln, Austria
| | | | - Waqas-Us-Din Khan
- Sustainable Development Study Centre, Government College University, Lahore, Pakistan
| | - Thomas G Reichenauer
- AIT Austrian Institute of Technology, Centre for Energy, Environmental Resources and Technologies, Tulln, Austria.
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Salomão Calixto L, Picard C, Savary G, Campos PMBGM. Skin characterization and immediate effects of different dermocosmetic treatments in French and Brazilian skin. J Cosmet Dermatol 2019; 19:466-472. [PMID: 31125171 DOI: 10.1111/jocd.13003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 04/24/2019] [Accepted: 05/02/2019] [Indexed: 01/03/2023]
Abstract
BACKGROUND All over the world, people face the same skin problems. However, their skin characteristics are different. Thus, it is a challenge to prescribe treatments that will be effective on different skin types. Therefore, it is very important to consider the skin biology when indicating a dermocosmetic treatment. OBJECTIVES To assess skin biophysical parameters in French and Brazilian subjects and to verify the efficacy of four dermocosmetic treatments in these populations. METHODS Five test areas were defined on each volar forearm of the eighteen Brazilian and eighteen French participants using a randomized design. Biophysical measurements in terms of skin hydration, skin barrier function, skin brightness, and skin viscoelasticity were performed before and after 60 minutes of treatment. RESULTS Skin biophysical differences between populations were found. French skin has been shown to be more hydrated regarding epidermal mechanic properties and stratum corneum water content and more radiant when compared with Brazilian skin. However, it showed more signs of cutaneous aging and fatigue effects on skin. The Brazilian skin showed better skin barrier function. In addition, the treatments were effective in both populations. CONCLUSIONS Despite the differences found in French and Brazilian skin, the proposed dermocosmetic treatments showed effective in both populations.
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Affiliation(s)
- Lívia Salomão Calixto
- School of Pharmaceutical Sciences of Ribeirão Preto, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Céline Picard
- UNILEHAVRE, FR 3038 CNRS, URCOM, Normandie Univ, Le Havre, France
| | - Géraldine Savary
- UNILEHAVRE, FR 3038 CNRS, URCOM, Normandie Univ, Le Havre, France
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Ikeura H, Ozawa S, Tamaki M. Growth of zinnia, Italian ryegrass, and alfalfa and their remediation effects in diesel oil-contaminated soils. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 21:1005-1011. [PMID: 31020861 DOI: 10.1080/15226514.2019.1594682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Our objective in this study was to compare the growth of zinnia, Italian ryegrass, and alfalfa, and their remediation effects in oil-contaminated soils. The soils were prepared by mixing 2, 4, or 8% diesel oil by weight with soil. The plant height and dry weights of shoots and roots were highest for zinnia in the 2 and 4% oil treatments, and highest for Italian ryegrass in the 8% oil treatment. The reduction ratios in soil total petroleum hydrocarbons concentration (TPH) for 3 plants were lower in the 4 and 8% oil treatments than those in the 2% treatment. The reduction ratios for Italian ryegrass and zinnia contaminated with 2, 4, and 8% diesel oil treatments were significantly higher than those for alfalfa and the non-cultivation treatment at 45 days after sowing, and there were no significant differences in reduction ratios between Italian ryegrass and zinnia. The reduction ratio of soil TPH concentration brought about by zinnia was also comparable to that of Italian ryegrass. Therefore, we conclude that zinnia shows growth and remediation effects that are equivalent to those of Italian ryegrass, in soils contaminated with less than 8% oil.
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Affiliation(s)
- Hiromi Ikeura
- a Faculty of Life and Environmental Science, Shimane University , Matsue , Shimane , Japan
| | - Suzuka Ozawa
- b School of Agriculture, Meiji University , Kawasaki , Kanagawa , Japan
| | - Masahiko Tamaki
- b School of Agriculture, Meiji University , Kawasaki , Kanagawa , Japan
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Ikeura H, Fukunaga S, Uchida N, Tamaki M. Relationships between root growth of Zinnia hybrid "profusion orange" flowers and phytoremediation of oil-contaminated soil. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 21:287-292. [PMID: 30648412 DOI: 10.1080/15226514.2018.1524825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Relationships exist between plant root growth and the phytoremediation of oil-contaminated soils. In a previous study, we demonstrated that zinnia flowers are well suited for the remediation of oil-contaminated soil. In this study, our goal was to quantify the relationship between zinnia root growth and purification of oil-contaminated soils. Three treatments were used: (1) cultivation of zinnia in oil-contaminated soil (contaminated pots), (2) cultivation in non-contaminated soil (non-contaminated pots), and (3) contaminated soil with no cultivation and only irrigation (irrigated pots). Growth of the Zinnia plants, including their roots, was significantly reduced in the contaminated pots compared with the noncontaminated pots. The soil dehydrogenase activity increased between 45 and 90 days after planting in all parts of the contaminated pots, especially the upper parts. The soil total petroleum hydrocarbon (TPH) concentrations in the contaminated pots decreased throughout the study period. Interestingly, the soil dehydrogenase activity increased, and the soil TPH concentration decreased even in lower parts of the pots where there was very little root growth. Therefore, the cultivation of plants can have a remediative effect on oil-contaminated soil even below the depth reached by the plant roots.
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Affiliation(s)
- Hiromi Ikeura
- a Faculty of Life and Environmental Science , Shimane University , Matsue , Shimane , Japan
| | - Sayuri Fukunaga
- b School of Agriculture , Meiji University , Kawasaki , Kanagawa , Japan
| | - Nahoko Uchida
- b School of Agriculture , Meiji University , Kawasaki , Kanagawa , Japan
| | - Masahiko Tamaki
- b School of Agriculture , Meiji University , Kawasaki , Kanagawa , Japan
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Ebadi A, Khoshkholgh Sima NA, Olamaee M, Hashemi M, Ghorbani Nasrabadi R. Remediation of saline soils contaminated with crude oil using the halophyte Salicornia persica in conjunction with hydrocarbon-degrading bacteria. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 219:260-268. [PMID: 29751257 DOI: 10.1016/j.jenvman.2018.04.115] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 03/27/2018] [Accepted: 04/29/2018] [Indexed: 06/08/2023]
Abstract
The negative impact of salinity on plant growth and the survival of rhizosphere biota complicates the application of bioremediation to crude oil-contaminated saline soils. Here, a comparison was made between the remedial effect of treating the soil with Pseudomonas aeruginosa, a salinity tolerant hydrocarbon-degrading consortium in conjunction with either the halophyte Salicornia persica or the non-halophyte Festuca arundinacea. The effect of the various treatments on salinized soils was measured by assessing the extent of total petroleum hydrocarbon (TPH) degradation, the soil's dehydrogenase activity, the abundance of the bacteria and the level of phytotoxicity as measured by a bioassay. When a non-salinized soil was assessed after a treatment period of 120 days, the ranking for effectiveness with respect to TPH removal was F. arundinacea > P. aeruginosa > S. persica > no treatment control, while in the presence of salinity, the ranking changed to S. persica > P. aeruginosa > F. arundinacea > no treatment control. Combining the planting of S. persica or F. arundinacea with P. aeruginosa inoculation ("bioaugmentation") boosted the degradation of TPH up to 5-17%. Analyses of the residual oil contamination revealed that long chain alkanes (above C20) were particularly strongly degraded following the bioaugmentation treatments. The induced increase in dehydrogenase activity and the abundance of the bacteria (3.5 and 10 fold respectively) achieved in the bioaugmentation/S. persica treatment resulted in 46-76% reduction in soil phytotoxicity in a saline soil. The indication was that bioaugmentation of halophyte can help to mitigate the adverse effects on the effectiveness of bioremediation in a crude oil-contaminated saline soil.
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Affiliation(s)
- Ali Ebadi
- Agricultural Biotechnology Research Institute of Iran (ABRII), AREEO, P. O. Box: 31535-1897, Karaj, Iran.
| | | | - Mohsen Olamaee
- Department of Soil Science, Gorgan University of Agricultural Sciences & Natural Resources, Gorgan, Iran.
| | - Maryam Hashemi
- Agricultural Biotechnology Research Institute of Iran (ABRII), AREEO, P. O. Box: 31535-1897, Karaj, Iran.
| | - Reza Ghorbani Nasrabadi
- Department of Soil Science, Gorgan University of Agricultural Sciences & Natural Resources, Gorgan, Iran.
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Luo J, He M, Qi S, Wu J, Gu XS. Effect of planting density and harvest protocol on field-scale phytoremediation efficiency by Eucalyptus globulus. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:11343-11350. [PMID: 29417481 DOI: 10.1007/s11356-018-1427-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 01/29/2018] [Indexed: 06/08/2023]
Abstract
The phytoremediation efficiency of multi-metal-polluted sites in an electronic waste recycling town by Eucalyptus globulus was evaluated through a series of 2-year field experiments. Different initial planting densities (2500, 5000, and 10,000 plants per ha), coppice rotations, and harvesting position (5 or 30 cm above the ground) protocols were designed to improve the remediation potential of the species. There were unnoticeable variations in metal concentrations and distribution characteristics in plant tissues in a low and medium planting-density field during the experimental period. At the end of the experiment, total biomass production per hectare in different protocols displayed a wide range with maximum yield produced in high density, moderate harvesting, and coppice rotation protocol being 2.9 times higher than the minimum yield. The moderate harvest protocol performed with medium planting density was the optimal Cd and Cu decontamination technique. Although the high planting-density field without coppice rotation had the strongest potential for Pb decontamination, it would take more time to remove other metals for the multi-metal-polluted soil decontamination. Considering the remediation efficiency and maintainability of the cultivation system, the moderate harvest protocol performed with the medium planting density was commended for phytoremediation of e-waste recycling impacted area.
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Affiliation(s)
- Jie Luo
- College of Resources and Environment, Yangtze University, 111 University Road, Wuhan, People's Republic of China.
- China University of Geosciences, 388 Lumo Road, Wuhan, 430074, People's Republic of China.
| | - Mei He
- College of Resources and Environment, Yangtze University, 111 University Road, Wuhan, People's Republic of China
| | - Shihua Qi
- China University of Geosciences, 388 Lumo Road, Wuhan, 430074, People's Republic of China
| | - Jian Wu
- China University of Geosciences, 388 Lumo Road, Wuhan, 430074, People's Republic of China
| | - Xiaowen Sophie Gu
- The University of Melbourne, Grattan Street Parkville, Melbourne, VIC, 3010, Australia
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Muratova AY, Panchenko LV, Semina DV, Golubev SN, Turkovskaya OV. New strains of oil-degrading microorganisms for treating contaminated soils and wastes. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1755-1315/107/1/012066] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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