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Rai PK, Nongtri ES. Heavy metals/-metalloids (As) phytoremediation with Landoltia punctata and Lemna sp. (duckweeds): coupling with biorefinery prospects for sustainable phytotechnologies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:16216-16240. [PMID: 38334920 DOI: 10.1007/s11356-024-32177-5] [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: 08/25/2023] [Accepted: 01/20/2024] [Indexed: 02/10/2024]
Abstract
Heavy metals/-metalloids can result in serious human health hazards. Phytoremediation is green bioresource technology for the remediation of heavy metals and arsenic (As). However, there exists a knowledge gap and systematic information on duckweed-based metal phytoremediation in an eco-sustainable way. Therefore, the present review offers a critical discussion on the effective use of duckweeds (genera Landoltia and Lemna)-based phytoremediation to decontaminate metallic contaminants from wastewater. Phytoextraction and rhizofiltration were the major mechanism in 'duckweed bioreactors' that can be dependent on physico-chemical factors and plant-microbe interactions. The biotechnological advances such as gene manipulations can accelerate the duckweed-based phytoremediation process. High starch and protein contents of the metal-loaded duckweed biomass facilitate their use as feedstock in biorefinery. Biorefinery prospects such as bioenergy production, value-added products, and biofertilizers can augment the circular economy approach. Coupling duckweed-based phytoremediation with biorefinery can help achieve Sustainable Development Goals (SDGs) and human well-being.
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Affiliation(s)
- Prabhat Kumar Rai
- Department of Environmental Science, Mizoram University (A Central University), Aizawl, 796004, India.
| | - Emacaree S Nongtri
- Department of Environmental Science, Mizoram University (A Central University), Aizawl, 796004, India
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Das PK, Das BP, Das BK, Dash P. Rhizospheric soil chromium toxicity and its remediation using plant hyperaccumulators. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2023; 26:193-207. [PMID: 37417937 DOI: 10.1080/15226514.2023.2231572] [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: 07/08/2023]
Abstract
The hyper-accumulation of chromium in its hexavalent form is treated as a hazardous soil pollutant at industrial and mining sites. Excessive accumulation of Cr6+ in soil threatens the environmental health and safety of living organisms. Out of two stable forms of chromium, Cr6+ is highly responsible for ecotoxicity. The expression of the high toxicity of Cr6+ at low concentrations in the soil environment indicates its lethality. It is usually released into the soil during various socio-economic activities. Sustainable remediation of Cr6+ contaminated soil is of utmost need and can be carried out by employing suitable plant hyperaccumulators. Alongside the plant's ability to sequester toxic metals like Cr6+, the rhizospheric soil parameters play a significant role in this technique and are mostly overlooked. Here we review the application of a cost-effective and eco-friendly remediation technology at hyperaccumulators rhizosphere to minimize the Cr6+ led soil toxicity. The use of selected plant species along with effective rhizospheric activities has been suggested as a technique to reduce Cr6+ toxicity on soil and its associated biota. This soil rectification approach may prove to be sustainable and advantageous over other possible techniques. Further, it may open up new solutions for soil Cr6+ management at polluted sites.
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Affiliation(s)
- Pratyush Kumar Das
- Centre for Biotechnology, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India
| | - Bidyut Prava Das
- Department of Botany, Rama Devi Women's University, Bhubaneswar, Odisha, India
| | - Bikash Kumar Das
- Centre for Biotechnology, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India
| | - Patitapaban Dash
- Centre for Biotechnology, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India
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Baek G, Saeed M, Choi HK. Duckweeds: their utilization, metabolites and cultivation. APPLIED BIOLOGICAL CHEMISTRY 2021; 64:73. [PMID: 34693083 PMCID: PMC8525856 DOI: 10.1186/s13765-021-00644-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 10/08/2021] [Indexed: 05/21/2023]
Abstract
Duckweeds are floating plants of the family Lemnaceae, comprising 5 genera and 36 species. They typically live in ponds or lakes and are found worldwide, except the polar regions. There are two duckweed subfamilies-namely Lemnoidea and Wolffioideae, with 15 and 21 species, respectively. Additionally, they have characteristic reproduction methods. Several metabolites have also been reported in various duckweeds. Duckweeds have a wide range of adaptive capabilities and are particularly suitable for experiments requiring high productivity because of their speedy growth and reproduction rates. Duckweeds have been studied for their use as food/feed resources and pharmaceuticals, as well as for phytoremediation and industrial applications. Because there are numerous duckweed species, culture conditions should be optimized for industrial applications. Here, we review and summarize studies on duckweed species and their utilization, metabolites, and cultivation methods to support the extended application of duckweeds in future.
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Affiliation(s)
- GahYoung Baek
- College of Pharmacy, Chung-Ang University, Seoul, 06974 Republic of Korea
| | - Maham Saeed
- College of Pharmacy, Chung-Ang University, Seoul, 06974 Republic of Korea
| | - Hyung-Kyoon Choi
- College of Pharmacy, Chung-Ang University, Seoul, 06974 Republic of Korea
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Sharma M, Kumar V, Mahey S, Bhardwaj R, Thukral AK. Antagonistic effects of EDTA against biochemical toxicity induced by Cr(VI) in Hordeum vulgare L. seedlings. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2020; 26:2487-2502. [PMID: 33424160 PMCID: PMC7772132 DOI: 10.1007/s12298-020-00908-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 10/21/2020] [Accepted: 11/02/2020] [Indexed: 06/12/2023]
Abstract
The present study aims at the amelioration of chromium Cr(VI) toxicity using ethylenediaminetetraacetic acid (EDTA), and to understand the interactive effects of Cr(VI) and EDTA with respect to seedling growth, lipid peroxidation as assessed from malondialdehyde, pigments and antioxidative enzymes in Hordeum vulgare L. Following multivariate statistical techniques were used to study binary interactions between Cr(VI) and EDTA: 2-way ANOVA, Tukey's multiple comparison test, multiple regression with interaction between Cr an EDTA, beta coefficients, path analysis and non-metric multidimensional scaling (NMDS). The present study revealed that the EDTA decreases lipid peroxidation induced by Cr(VI) and ameliorates the antioxidative defence system and pigment constitution of seedlings grown in Cr(VI) containing media. EDTA-Cr(VI) interaction decreased the Cr content in the seedlings which may be attributed to the chelating effect of EDTA. The root and shoot bioconcentration factors, the ratio of Cr content in the plant to that in the medium, were decreased by addition of EDTA to Cr(VI), indicating a decrease in the uptake of Cr by the seedlings from the medium. NMDS revealed that the ranking of the studied parameters is maintained by ordination on two axes. The study established that EDTA is antagonistic to Cr(VI) induced biochemical toxicity, and improves the antioxidative defence system, increases the chlorophyll content, and decreases Cr uptake in barley seedlings.
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Affiliation(s)
- Manik Sharma
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, 143005 India
| | - Vinod Kumar
- Department of Botany, Government Degree College Ramban, Jammu, 182144 India
| | - Sonia Mahey
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, 143005 India
| | - Renu Bhardwaj
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, 143005 India
| | - Ashwani Kumar Thukral
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, 143005 India
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Xu Y, Li K, Liu Y, Liu Z, Wang L, Pu J, Xu Z, Sun H. Combined effects of artificial sweetener acesulfame on the uptake of Cd in rice (Oryza sativa L.). ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 252:171-179. [PMID: 31146232 DOI: 10.1016/j.envpol.2019.05.113] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 05/17/2019] [Accepted: 05/21/2019] [Indexed: 06/09/2023]
Abstract
Organic pollutants are widely detected in surface water, groundwater and irrigation sewage in farmland soil, some of which can form complexes with heavy metal ions as ligands in the environment. Acesulfame (ACE), one of the most popular artificial sweeteners, has been found in wastewater sometimes at tens of microgram per liter. However, the combined effects of heavy metals and ACE are still unclear. In the present study, the effects of ACE on cadmium (Cd) absorption and translocation in rice seedlings (Oryza sativa L.) under different exposure conditions were investigated using hydroponic experiments. Under the combined exposure treatments of ACE and Cd, absorption of Cd and ACE in rice significantly decreased when compared with the single exposure treatments, while the alleviation of oxidative damage in rice was also found. Under the sequential exposure treatments of Cd and ACE, the post-exposed ACE activated the pre-absorbed Cd in plant, and accelerated the release of Cd to the environment as well as its translocation from the roots to shoots. In addition, compared with the single Cd exposure, the accumulated ACE can alleviate the oxidative damage in rice shoots induced by Cd, although the Cd concentrations in shoots changed little. In summary, the combined pollution of artificial sweetener ACE was beneficial to relieve the toxicological damage and ecological risk caused by Cd.
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Affiliation(s)
- Yali Xu
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin, 300071, China
| | - Ke Li
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin, 300071, China
| | - Yubin Liu
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin, 300071, China
| | - Zhen Liu
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin, 300071, China
| | - Lei Wang
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin, 300071, China.
| | - Jian Pu
- Faculty of Information Networking for Innovation and Design, Toyo University, Tokyo, 115-0053, Japan
| | - Zhen Xu
- Tianjin Agricultural Environmental Protection Management Monitoring Station, Tianjin, 300061, China
| | - Hongwen Sun
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, Nankai University, Tianjin, 300071, China
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Aihemaiti A, Jiang J, Li D, Liu N, Yang M, Meng Y, Zou Q. The interactions of metal concentrations and soil properties on toxic metal accumulation of native plants in vanadium mining area. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 222:216-226. [PMID: 29857314 DOI: 10.1016/j.jenvman.2018.05.081] [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: 03/02/2018] [Revised: 05/19/2018] [Accepted: 05/25/2018] [Indexed: 05/13/2023]
Abstract
High demand of Vanadium (V) in high-strength steel and battery manufacturing industry led to extensive V mining activity in China, and caused multi-metal pollution of soil around V mining area. To understand the phytoremediation potentials of native plants grown in V mining area, and the effect of soil properties and soil metal concentrations on toxic metal accumulations of native plants. Setaria viridis, Kochia scoparia and Chenopodium album were sampled from different sites in V mining area, soil properties, soil metal concentrations and metal accumulation amount of investigated plants were measured, bioaccumulation (BAF) and translocation (TF) efficiencies were calculated. Soil pH, cation exchange capacity (CEC) and available phosphorous (P) can significantly affect V and copper (Cu) uptake in the shoots of Setaria viridis while soil metal contents were lower than the permissible limits. Soil pH can significantly affect V accumulations in the roots and shoots of Kochia scoparia grown in slightly V polluted soils. Setaria viridis exhibited TF > 1 for moderately V and slightly chromium (Cr) polluted soils, and BAF>1 for slightly Cu contaminated soils respectively. Kochia scoparia and Chenopodium album showed TF > 1 and BAF>1 for slightly V polluted soils, respectively. Setaria viridis was practical for in situ phytoextractions of moderately V and slightly Cr polluted soils, and phytostabilization of slightly Cu contaminated soils. Kochia scoparia and Chenopodium album could be used as phytoextractor and phytostablizer in slightly V polluted soils in V mining area. Metal uptake of native plants grown in slightly multi-metal contaminated sites in V mining area can be manipulated by altering soil properties.
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Affiliation(s)
| | - Jianguo Jiang
- School of Environment, Tsinghua University, Beijing, 100084, China; Key Laboratory for Solid Waste Management and Environment Safety, Ministry of Education of China, Beijing, China; Collaborative Innovation Center for Regional Environmental Quality, Tsinghua University, Beijing, China.
| | - De'an Li
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Nuo Liu
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Meng Yang
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Yuan Meng
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Quan Zou
- School of Environment, Tsinghua University, Beijing, 100084, China
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Aihemaiti A, Jiang J, Li D, Li T, Zhang W, Ding X. Toxic metal tolerance in native plant species grown in a vanadium mining area. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:26839-26850. [PMID: 28963601 DOI: 10.1007/s11356-017-0250-5] [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: 05/07/2017] [Accepted: 09/19/2017] [Indexed: 06/07/2023]
Abstract
Vanadium (V) has been extensively mined in China and caused soil pollution in mining area. It has toxic effects on plants, animals and humans, posing potential health risks to communities that farm and graze cattle adjacent to the mining area. To evaluate in situ phytoremediation potentials of native plants, V, chromium, copper and zinc concentrations in roots and shoots were measured and the bioaccumulation (BAF) and translocation (TF) efficiencies were calculated. The results showed that Setaria viridis accumulated greater than 1000 mg kg-1 V in its shoots and exhibited TF > 1 for V, Cr, Zn and BAF > 1 for Cu. The V accumulation amount in the roots of Kochia scoparia also surpassed 1000 mg kg-1 and showed TF > 1 for Zn. Chenopodium album had BAF > 1 for V and Zn and Daucus carota showed TF > 1 for Cu. Eleusine indica presented strong tolerance and high metal accumulations. S. viridis is practical for in situ phytoextractions of V, Cr and Zn and phytostabilisation of Cu in V mining area. Other species had low potential use as phytoremediation plant at multi-metal polluted sites, but showed relatively strong resistance to V, Cr, Cu and Zn toxicity, can be used to vegetate the contaminated soils and stabilise toxic metals in V mining area.
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Affiliation(s)
| | - Jianguo Jiang
- School of Environment, Tsinghua University, Beijing, 100084, China.
- Key Laboratory for Solid Waste Management and Environment Safety, Ministry of Education of China, Beijing, China.
- Collaborative Innovation Center for Regional Environmental Quality, Tsinghua University, Beijing, China.
| | - De'an Li
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Tianran Li
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Wenjie Zhang
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Xutong Ding
- School of Environment, Tsinghua University, Beijing, 100084, China
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Hou J, Liu X, Cui B, Bai J, Wang X. Concentration-dependent alterations in gene expression induced by cadmium in Solanum lycopersicum. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:10528-10536. [PMID: 28281075 DOI: 10.1007/s11356-017-8748-4] [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: 05/19/2016] [Accepted: 03/02/2017] [Indexed: 05/11/2023]
Abstract
Cadmium (Cd) toxicity in agricultural soil has received significant attention because of its higher transformation in the food chain and toxicity to humans. The aim of the present study was to develop sensitive and specific biomarkers for Cd stress. Therefore, transcriptional analyses were performed to investigate concentration-response characteristics of Cd responsive genes identified from a Solanum lycopersicum microarray. The results showed that the lowest observable adverse effect concentrations (LOAECs) of Cd to S. lycopersicum were 1 mg/kg for seed germination, 8 mg/kg for root dry weight, 8 mg/kg for root elongation, and 8 mg/kg for root morphology. Furthermore, the genes were differentially expressed even at the lowest Cd concentrations (0.5 mg/kg), indicating that the detection of Cd in soil at the molecular level is a highly sensitive method. Cd in soil was positively correlated with the expression of the F-box protein PP2-B15 (r = 0.809, p < 0.01) and zinc transporter 4 (r = 0.643, p < 0.01), indicating that these two genes could be selected as indicators of soil Cd contamination.
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Affiliation(s)
- Jing Hou
- School of Environment And Chemical Engineering, North China Electric Power University, Beijing, 102206, China
| | - Xinhui Liu
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China.
| | - Baoshan Cui
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China
| | - Junhong Bai
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China
| | - Xiangke Wang
- School of Environment And Chemical Engineering, North China Electric Power University, Beijing, 102206, China.
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Boubakri H, Gargouri M, Mliki A, Brini F, Chong J, Jbara M. Vitamins for enhancing plant resistance. PLANTA 2016; 244:529-43. [PMID: 27315123 DOI: 10.1007/s00425-016-2552-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Accepted: 05/29/2016] [Indexed: 05/26/2023]
Abstract
This paper provides an overview on vitamins with inducing activities in plants, the molecular and cellular mechanisms implicated, and the hormonal signalling-network regulating this process. Moreover, it reports how vitamins might be part of the molecular events linked to induced resistance by the conventional elicitors. Induced resistance (IR), exploiting the plant innate-defense system is a sustainable strategy for plant disease control. In the last decade, vitamins have been proven to act as inducers of disease resistance, and these findings have received an important attention owing to their safety and cost effectiveness. Vitamins, including thiamine (TH, vitamin B1), riboflavin (RF, vitamin B2), menadione sodium bisulfite (MSB, vitamin K3), Para-aminobenzoic acid (PABA, vitamin Bx), and folic acid (FA, vitamin B9) provided an efficient protection against a wide range of pathogens through the modulation of specific host-defense facets. However, other vitamins, such as ascorbic acid (AA, vitamin C) and tocopherols (vitamin E), have been shown to be a part of the molecular mechanisms associated to IR. The present review is the first to summarize what vitamins are acting as inducers of disease resistance in plants and how could they be modulated by the conventional elicitors. Thus, this report provides an overview on the protective abilities of vitamins and the molecular and cellular mechanisms underlying their activities. Moreover, it describes the hormonal-signalling network regulating vitamin-signal transduction during IR. Finally, a biochemical model describing how vitamins are involved in the establishment of IR process is discussed.
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Affiliation(s)
- Hatem Boubakri
- Laboratory of Leguminous, Centre of Biotechnology of Borj-Cédria, 2050, Hammam-Lif, Tunisia.
| | - Mahmoud Gargouri
- Institute of Biological Chemistry, Washington State University, Pullman, WA, 99164, USA
- Laboratory of Plant Molecular Physiology, Centre of Biotechnology of Borj-Cédria, 2050, Hammam-Lif, Tunisia
| | - Ahmed Mliki
- Laboratory of Plant Molecular Physiology, Centre of Biotechnology of Borj-Cédria, 2050, Hammam-Lif, Tunisia
| | - Faiçal Brini
- Laboratory of Biotechnology and Plant Improvement, Centre of Biotechnology of Sfax, Route Sidi-Mansour, BP.1177, 3018, Sfax, Tunisia
| | - Julie Chong
- Laboratoire Vigne, Biotechnologies et Environnement (LVBE, EA3991), Université de Haute Alsace, 33 rue de Herrlisheim, 68000, Colmar, France
| | - Moez Jbara
- Laboratory of Leguminous, Centre of Biotechnology of Borj-Cédria, 2050, Hammam-Lif, Tunisia
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Li SG, Hou J, Liu XH, Cui BS, Bai JH. Morphological and transcriptional responses of Lycopersicon esculentum to hexavalent chromium in agricultural soil. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2016; 35:1751-1758. [PMID: 26627465 DOI: 10.1002/etc.3315] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 11/16/2015] [Accepted: 11/30/2015] [Indexed: 06/05/2023]
Abstract
The carcinogenic, teratogenic, and mutagenic effects of hexavalent chromium (Cr[VI]) on living organisms through the food chain raise the immediate need to assess the potential toxicological impacts of Cr(VI) on human health. Therefore, the concentration-dependent responses of 12 Cr(VI)-responsive genes selected from a high-throughput Lycopersicon esculentum complementary DNA microarray were examined at different Cr concentrations. The results indicated that most of the genes were differentially expressed from 0.1 mg Cr/kg soil, whereas the lowest-observable-adverse-effect concentrations of Cr(VI) were 1.6 mg Cr/kg soil, 6.4 mg Cr/kg soil, 3.2 mg Cr/kg soil, and 0.4 mg Cr/kg soil for seed germination, root elongation, root biomass, and root morphology, respectively, implying that the transcriptional method was more sensitive than the traditional method in detecting Cr(VI) toxicity. Dose-dependent responses were observed for the relative expression of expansin (p = 0.778), probable chalcone-flavonone isomerase 3 (p = -0.496), and 12S seed storage protein CRD (p = -0.614); therefore, the authors propose the 3 genes as putative biomarkers in Cr(VI)-contaminated soil. Environ Toxicol Chem 2016;35:1751-1758. © 2015 SETAC.
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Affiliation(s)
- Shi-Guo Li
- School of Life Sciences, Tsinghua University, Beijing, China
| | - Jing Hou
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, China
- Department of Environmental and Chemical Engineering, North China Electric Power University, Beijing, China
| | - Xin-Hui Liu
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, China
| | - Bao-Shan Cui
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, China
| | - Jun-Hong Bai
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, China
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Ton SS, Lee MW, Yang YH, Hoi SK, Cheng WC, Wang KS, Chang HH, Chang SH. Effects of Reductants on Phytoextraction of Chromium (VI) by Ipomoea aquatica. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2015; 17:429-436. [PMID: 25495933 DOI: 10.1080/15226514.2014.910173] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Reductants are often used to reduce Cr(VI) in chemical treatments, yet the effects of the reductants on Cr(VI) phytoremediation are not fully understood. This study investigates the effects of different reductants on Cr(VI) phytoremediation by Ipomoea aquatica in simulated solution with 3 mg L(-1) of Cr(VI), pH0 of 6, and an incubation time of 5 days. Results indicate that the applications of S2O3(2-), Fe0, and Fe2+ at low doses notably increased root Cr concentrations, which were obviously higher than that those in the control (Cr6+ alone). However, high reductant concentrations decreased bioaccumulation of Cr in the roots and shoots of the plant. Statistical results indicate that Cr concentrations were significantly and negatively correlated with Fe concentrations in the roots and shoots of the plant (p<0.05). This suggest that Fe accumulation inhibited Cr accumulation in the plant. A Cr(VI) concentration of 3 mg L(-1) caused short, brown lateral roots with tip necrosis, leaf chlorosis, and noticeable shoot wilting. The leaf necrosis and shoot wilting is caused by oxidative damage of lateral roots by Cr(VI) rather than by the reactive oxygen species generated by the oxidative stress. Addition of the reductants effectively reduced these plant injuries.
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Affiliation(s)
- Shan-Shin Ton
- a Department of Environmental Engineering and Science , Feng-Chia University , Taichung , Taiwan , ROC
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Banerjee P, Mehta A, Shanthi C. Investigation into the cyto-protective and wound healing properties of cryptic peptides from bovine Achilles tendon collagen. Chem Biol Interact 2014; 211:1-10. [DOI: 10.1016/j.cbi.2014.01.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 12/03/2013] [Accepted: 01/07/2014] [Indexed: 11/26/2022]
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Montes MO, Peralta-Videa JR, Parsons JG, Corral Diaz B, Gardea-Torresdey JL. Spectroscopic determination of the toxicity, absorption, reduction, and translocation of Cr(VI) in two Magnoliopsida species. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2013; 15:168-187. [PMID: 23487994 DOI: 10.1080/15226514.2012.687017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Hexavalent chromium is a contaminant highly mobile in the environment that is toxic for plants at low concentrations. In this work, the physiological response of Convolvulus arvensis and Medicago truncatula plants to Cr(VI) treatments was compared. C. arvensis is a potential Cr hyperaccumulator well adapted to semiarid conditions that biotransform Cr(VI) to the less toxic Cr(III). M. truncatula is a model plant well adapted to semiarid conditions with a well studied genetic response to heavy metal stress. The results demonstrated that C. arvensis is more tolerant to Cr toxicity and has a higher Cr translocation to the leaves. The inductively coupled plasma optical emission spectroscopy results showed that C. arvensis plants treated with 10 mg Cr(VI) L(-1) accumulated 1512, 210, and 131 mg Cr kg(-1) in roots, stems, and leaves, respectively. While M. truncatula plants treated with the same Cr(VI) concentration accumulated 1081, 331, and 44 (mg Cr kg(-1)) in roots, stems, and leaves, respectively. Enzymatic assays demonstrated that Cr(VI) decreased ascorbate peroxidase activity and increased catalase activity in M. truncatula, while an opposite response was found in C. arvensis. The x-ray absorption spectroscopy studies showed that both plant species reduced Cr(VI) to the less toxic Cr(III).
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Affiliation(s)
- Milka O Montes
- Chemistry Department, University of Texas at El Paso, El Paso, Texas, USA
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