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Wu J, Luo J, Wang Y, Peng Y, Yang G, Zhu J. Arbuscular mycorrhiza augments aluminum tolerance in white clover ( Trifoliumrepens L.) by strengthening the ascorbate-glutathione cycle and phosphorus acquisition. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2023; 29:1647-1661. [PMID: 38162922 PMCID: PMC10754793 DOI: 10.1007/s12298-023-01369-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 09/22/2023] [Accepted: 10/06/2023] [Indexed: 01/03/2024]
Abstract
The ascorbate-glutathione (AsA-GSH) cycle is essential for detoxifying reactive oxygen species (ROS) under environmental stresses. The toxicity of aluminum (Al) limits the growth and performance of cultivated plants in acidic soil. However, there is limited information available on the relationship between arbuscular mycorrhizal symbiosis and the AsA-GSH cycle in host plants under Al stress. This study aimed to examine the impact of arbuscular mycorrhizal fungi (AMF), specifically Funneliformis mosseae, on the growth, antioxidant enzymes, components of the AsA-GSH cycle, and stress response gene expressions in white clover (Trifolium repens L.) under Al stress. Our findings demonstrate that AMF inoculation significantly reduced Al accumulation and increased phosphorus (P) content in the roots of white clover, thereby promoting plant biomass accumulation and mycorrhizal colonization under Al stress. AMF effectively scavenged Al-induced ROS (H2O2 and O2-) by enhancing the activities of antioxidant enzymes, including superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT), as well as the components of the AsA-GSH cycle (e.g., enzymes and antioxidants) in the leaves and roots of white clover plants. Additionally, the mitigating effect of AMF was associated with the upregulation of genes involved in P transport (PHO1-2 and PHT1-7), the AsA-GSH pathway (GST-2 and APX-2), and Al stress (ALMT1) in white clover roots compared to control plants. Principal component analysis revealed that 65.9% of the total variance was explained by the first principal component. Dry mass showed a positive correlation with POD and P content, while exhibiting a highly negative correlation with ROS, antioxidant physiology index, Al content, and the expression of related genes in white clover. Overall, this study suggests that AMF enhances the tolerance of white clover to Al stress by improving P uptake and strengthening the AsA-GSH cycle. Graphical Abstract
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Affiliation(s)
- Juyang Wu
- School of Horticulture and Forestry, Hubei University for Nationalities, Enshi, 445000 China
- Key Laboratory of Biological Resources Conservation and Utilization of Hubei Province, Enshi, 445000 China
| | - Jie Luo
- School of Yuanpei, Shaoxing University, Shaoxing, 312000 China
| | - Yibing Wang
- School of Life and Environmental Sciences, Shaoxing University, Shaoxing, 312000 China
| | - Yulun Peng
- School of Life and Environmental Sciences, Shaoxing University, Shaoxing, 312000 China
| | - Guo Yang
- School of Life and Environmental Sciences, Shaoxing University, Shaoxing, 312000 China
| | - Jiang Zhu
- School of Horticulture and Forestry, Hubei University for Nationalities, Enshi, 445000 China
- Key Laboratory of Biological Resources Conservation and Utilization of Hubei Province, Enshi, 445000 China
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Uwiringiyimana E, Gao J, Zhang D, Biswash MR, Shi YXX. Bioaccumulation and translocation of Hg and Cr by tobacco in Sichuan Province, China: understanding the influence of soil pH. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:1193. [PMID: 37698692 DOI: 10.1007/s10661-023-11806-5] [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: 06/22/2023] [Accepted: 08/30/2023] [Indexed: 09/13/2023]
Abstract
The present study investigated the bioaccumulation and translocation of mercury (Hg) and chromium (Cr) in Yunyan 87 flue-cured tobacco (Nicotiana tabacum) and assessed the influence of soil pH on the metal uptake by plant organs at the field scale. The study was conducted in 4 different regions selected from Sichuan Province, China: Guangyuan, Luzhou, Panzhihua, and Yibin. The results revealed that Hg highly contaminated Yibin soils at 0.29 mg kg-1 and by Cr at 147 mg kg-1, which is above the permissible limit. The levels of Hg in tobacco plant organs were predominantly in the order of leaves > root > stem. The overall trend for Cr contents in tobacco organs was in the order of root > leaves > stem. The results of an index of bioaccumulation (IBA) and translocation factor (TF) showed that the values observed in Panzhihua and Guangyuan tobacco leaves were generally higher, despite the low levels of soil contamination. The linear mixed model (LMM) demonstrated that the log of Hg IBA in tobacco organs was likely to decrease with soil pH increase, whereas the log of Cr IBA only decreased in the root but gradually increased in the aerial parts with soil pH increase. The total random variation in the log of metals' IBA due to regions indicated that for Hg, 33.42% of the variation was explained by regional differences, while for Cr, only 13% was accounted. The results suggested that Yibin and Luzhou need to correct the soil acidity if they are set to reduce Hg contamination in tobacco-growing soils. Guangyuan and Panzhihua need efforts to keep the soil pH on track to avoid high contamination levels, and effective measures of soil nutrients supply are required to produce high tobacco leaf quality free from heavy metal content. The findings of this study may be used to ascertain regional differences in heavy metals, particularly Hg and Cr uptake by tobacco plant organs, and to prevent the cultivation areas contamination through soil pH monitoring.
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Affiliation(s)
- Ernest Uwiringiyimana
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, P. O. Box 821, Nanjing, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Jianing Gao
- College of Tourism and Geographical Science, Leshan Normal University, Leshan, China
| | - Dan Zhang
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China
| | - Md Romel Biswash
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, P. O. Box 821, Nanjing, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yang-Xiao-Xiao Shi
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, P. O. Box 821, Nanjing, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
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Hussain S, Yang J, Hussain J, Sattar A, Ullah S, Hussain I, Rahman SU, Zandi P, Xia X, Zhang L. Mercury fractionation, bioavailability, and the major factors predicting its transfer and accumulation in soil-wheat systems. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 847:157432. [PMID: 35853525 DOI: 10.1016/j.scitotenv.2022.157432] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 07/10/2022] [Accepted: 07/13/2022] [Indexed: 06/15/2023]
Abstract
Soil mercury (Hg) and its bioaccumulation in food crops have attracted widespread concerns globally due to its harmful effects on biota. However, soil mercury fractionation, bioavailability, and the major factors predicting its transfer and accumulation in soil-wheat-systems have not been thoroughly explored. Twenty-one (21) soil samples collected throughout China with a wide spectrum of physico-chemical characteristics were contaminated with HgCl2 and winter wheat (Triticum aestivum L.) was grown on the soils in a greenhouse pot-culture experiment for 180 days. A four-step sequential extraction was used segregating soil Hg into water-soluble (F1, 0.21 %), exchangeable (F2, 0.07 %), organically bound (F3, 16.40 %), and residual fractions (F4, 83.32 %). Step-wise multiple linear regression (SMLR) and path analysis (PA) were used to develop a prediction model and identify the major controlling factors of soil-wheat Hg transference. The SMLR results revealed that wheat Hg in leaves, husk, and grain was positively correlated with soil total and available Hg, and crystalline manganese (Cryst-Mn), while negatively correlated with soil pH, amorphous manganese (Amor-Mn) and crystalline aluminium (Cryst-Al). Bioconcentration factor (BCF) values were significantly higher in acidic soils (highest 0.05), with phytotoxic effects in some soils, as compared to alkaline soils (lowest 0.006). Furthermore, wheat grain Hg was significantly correlated with total (R2 = 0.25), water-soluble (R2 = 0.54) and NH4Ac-extractable Hg (R2 = 0.43) while also had a good correlation with soil pH (R2 = -0.20). In conclusion, the soil total and available Hg (water-soluble + exchangeable fraction), pH, organic matter, and Amor-Mn are the most important soil variables that support Hg uptake in the wheat plants, which benefit managing Hg-enriched agricultural soils for safe wheat production.
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Affiliation(s)
- Sajjad Hussain
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China; School of Soil and Water Conservation, Beijing Forestry University, Beijing 100081, China
| | - Jianjun Yang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China.
| | | | - Abdul Sattar
- College of Agriculture, Baha Uddin Zakariya University, Bahadur Sub-Campus Layyah, Pakistan
| | - Subhan Ullah
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Imran Hussain
- Environmental Biotechnology Laboratory, Department of Biotechnology Comsats University Islamabad, Abbottabad Campus, Pakistan
| | - Shafeeq Ur Rahman
- School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan, Guangdong Province, China; MOE Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Peiman Zandi
- International Faculty of Applied Technology, Yibin University, Yibin 644000, China; Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Xing Xia
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Liandong Zhang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China
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Singh S, Kumar V, Gupta P, Singh A. Conjoint application of novel bacterial isolates on dynamic changes in oxidative stress responses of axenic Brassica juncea L. in Hg-stress soils. JOURNAL OF HAZARDOUS MATERIALS 2022; 434:128854. [PMID: 35429756 DOI: 10.1016/j.jhazmat.2022.128854] [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: 01/27/2022] [Revised: 03/24/2022] [Accepted: 04/01/2022] [Indexed: 06/14/2023]
Abstract
This experimental study explores the possible role of three Hg-resistant bacterial strains in the enhanced growth of the mustard plant (Brassica juncea) under Hg-stress conditions. Under different concentrations of Hg, a pot scale experiment with Brassica juncea L. was performed to investigate the potential of bacterial strains for phytoremediation under Hg stress conditions. The results showed that all three strains, as well as their consortium, were capable of stimulating plant growth, biomass, and anti-oxidative enzyme activities. In comparison to the individual strains, the consortiums of all three strains were more prominent in the intensification of Brassica juncea L. physiological activity. Under Hg-stress conditions, all three strains increased the level of antioxidative content in Brassica juncea, indicating an increase in enzyme activity to cope with oxidative stress. Among all the three strains, Citrobacter Freundii (IITISM25) showed the highest accumulation potential in B. juncea followed by Morganella morganii (IITISM23) and Brevundimonas Dimunta (IITISM22). Hence, the results suggest that the IITISM22, IITISM23, IITISM25 strains and their consortium are very effective in phytoremediation and promote Brassica juncea growth under Hg-stress conditions.
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Affiliation(s)
- Shalini Singh
- Laboratory of Applied Microbiology, Department of Environmental Science & Engineering, Indian Institute of Technology, Indian School of Mines, Dhanbad 826 004, Jharkhand, India
| | - Vipin Kumar
- Laboratory of Applied Microbiology, Department of Environmental Science & Engineering, Indian Institute of Technology, Indian School of Mines, Dhanbad 826 004, Jharkhand, India.
| | - Pratishtha Gupta
- Laboratory of Applied Microbiology, Department of Environmental Science & Engineering, Indian Institute of Technology, Indian School of Mines, Dhanbad 826 004, Jharkhand, India
| | - Ankur Singh
- Laboratory of Applied Microbiology, Department of Environmental Science & Engineering, Indian Institute of Technology, Indian School of Mines, Dhanbad 826 004, Jharkhand, India
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Luo J, Yan Q, Yang G, Wang Y. Impact of the Arbuscular Mycorrhizal Fungus Funneliformis mosseae on the Physiological and Defence Responses of Canna indica to Copper Oxide Nanoparticles Stress. J Fungi (Basel) 2022; 8:513. [PMID: 35628768 PMCID: PMC9146287 DOI: 10.3390/jof8050513] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/13/2022] [Accepted: 05/14/2022] [Indexed: 02/04/2023] Open
Abstract
Copper oxide nanoparticles (nano-CuO) are recognized as an emerging pollutant. Arbuscular mycorrhizal fungi (AMF) can mitigate the adverse impacts of various pollutants on host plants. However, AMF's mechanism for alleviating nano-CuO phytotoxicity remains unclear. The goal of this study was to evaluate how AMF inoculations affect the physiological features of Canna indica seedlings exposed to nano-CuO stress. Compared with the non-AMF inoculated treatment, AMF inoculations noticeably improved plant biomass, mycorrhizal colonization, leaf chlorophyll contents, and the photosynthetic parameters of C. indica under nano-CuO treatments. Moreover, AMF inoculation was able to significantly mitigate nano-CuO stress by enhancing antioxidant enzyme activities and decreasing ROS levels in the leaves and roots of C. indica, thus increasing the expression of genes involved in the antioxidant response. In addition, AMF inoculation reduced the level of Cu in seedlings and was associated with an increased expression of Cu transport genes and metallothionein genes. Furthermore, AMF inoculations increased the expression levels of organic acid metabolism-associated genes while facilitating organic acid secretion, thus reducing the accumulation of Cu. The data demonstrate that AMF-plant symbiosis is a feasible biocontrol approach to remediate nano-CuO pollution.
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Affiliation(s)
- Jie Luo
- School of Ecology and Environment, Anhui Normal University, Wuhu 241000, China;
- School of Yuanpei, Shaoxing University, Shaoxing 312000, China;
| | - Qiuxia Yan
- School of Yuanpei, Shaoxing University, Shaoxing 312000, China;
| | - Guo Yang
- School of Life Science, Shaoxing University, Shaoxing 312000, China
| | - Youbao Wang
- School of Ecology and Environment, Anhui Normal University, Wuhu 241000, China;
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Arbuscular Mycorrhiza Extraradical Mycelium Promotes Si and Mn Subcellular Redistribution in Wheat Grown under Mn Toxicity. INTERNATIONAL JOURNAL OF PLANT BIOLOGY 2022. [DOI: 10.3390/ijpb13020009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Manganese (Mn) and aluminum (Al) toxicities are serious edaphic limitations to crop production in acidic soils. Excess Mn can be countered using a stress-adapted soil microbiota that establish symbiotic relationships with native plants. The arbuscular mycorrhizal fungi (AMF) associated with Lolium rigidum L. develop extraradical mycelia (ERM) that quickly colonize wheat and lead to greater shoot growth by promoting stress-evading mechanisms that are not yet completely explained. In the present study, wheat growth was assessed after 3 weeks on disturbed and undisturbed (intact ERM) acidic soil where the native non-mycotrophic Silene gallica L. or strongly mycotrophic L. rigidum were previously developed. The physiological and biochemical mechanisms responsible for increased growth were analyzed by assessing wheat leaf chlorophyll content, photosystem II quantum yield and performance index, enzymatic activity of ascorbate peroxidase (APX), catalase (CAT), glutathione reductase (GR), guaiacol peroxidase (GPX), superoxide dismutase (SOD) and contents and subcellular localization of Mn, Mg, Si and K. The soil from native plants had a beneficial effect on shoot weight and chlorophyll levels. The highest benefits were obtained for wheat grown in soil with intact ERM associated with L. rigidum. In this condition, where earlier mycorrhization was favored, the Mn content decreased, alongside the content of Si, while the Mg/Mn ratio increased. Mn was redirected to the apoplast, while Si was redirected to the symplast. The activity of APX, GPX and SOD increased, probably due to increased metabolic growth (higher shoot weight and chlorophyll content). Understanding the mechanisms induced by native AMF responsible for increasing wheat performance can contribute to the establishment of sustainable approaches for crop production in acidic soils with Mn toxicity. The use of native plant AMF developers can improve the sustainable use of natural resources in the scope of greener agricultural practices.
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Hussain S, Yang J, Hussain J, Hussain I, Kumar M, Ullah S, Zhang L, Xia X, Jia Y, Ma Y, Gao Y. Phytoavailability and transfer of mercury in soil-pepper system: Influencing factors, fate, and predictive approach for effective management of metal-impacted spiked soils. ENVIRONMENTAL RESEARCH 2022; 207:112190. [PMID: 34624269 DOI: 10.1016/j.envres.2021.112190] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 08/15/2021] [Accepted: 10/04/2021] [Indexed: 06/13/2023]
Abstract
Mercury (Hg) contamination and accumulation in food crops is a global threat posing potential health risk to humans. However, Hg phytoavailability in soil-pepper system and its influencing factors largely remain unknown. In this study, a greenhouse pot experiment was conducted to grow peppers using 21 Chinese agricultural soils with varied soil properties and aged Hg levels. Mercury concentration in pepper leaves and fruits ranged from 0.021 to 0.057 mg kg-1 and 0.005-0.022 mg kg-1 respectively, while fruit Hg content in three soils (Anhui, Hubei, Beijing) exceeded the safety limit. Fruit Hg concentration was better positively correlated with soil Mg(NO3)2-extractable Hg content (r = 0.7, P < 0.0001) than soil total Hg content (r = 0.45, P < 0.0001). Highest bioconcentration factor (BCF, ratio of Hg plant to Hg soil) yielded in acidic soils, while the lowest BCF occurred in alkaline soils. Path analysis indicated available-Hg (R2 = 0.40) and total-Hg (R2 = 0.40) had direct positive effects on the pepper fruit Hg concentration, while direct negative effects including pH (R2 = -0.86), organic matter (R2 = -0.7), crystalline-Fe (R2 = -0.68). Those agreed with the stepwise multiple linear regression analysis which yielded a regression predictive model (R2 = 0.73, P < 0.0001). Soil available-Hg, total-Hg, pH, organic matter and crystalline-Fe & Mn were the most influencing factors of Hg phytoavailability. These results provide new insights into the phytoavailability of Hg in soil-pepper system, thus facilitating the management of pepper cultivation in Hg-enriched soils.
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Affiliation(s)
- Sajjad Hussain
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, China; School of Soil and Water Conservation, Beijing Forestry University, Beijing, 100083, China
| | - Jianjun Yang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
| | | | - Imran Hussain
- Environmental Biotechnology Laboratory, Department of Biotechnology University of Sialkot, Punjab Pakistan
| | - Mahendar Kumar
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Subhan Ullah
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Liandong Zhang
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Xing Xia
- Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Yuehui Jia
- College of Bioscience and Resource Environment, Beijing University of Agriculture, Beijing, 102206, China
| | - Yibing Ma
- Guangdong-Hongkong-Macao Joint Laboratory of Collaborative Innovation for Environmental Quality, Macao Environmental Research Institute, Macau University of Science and Technology, 999078, Macao, China
| | - Yuxi Gao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, and Laboratory of Metallomics, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China
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Faria JMS, Pinto AP, Teixeira D, Brito I, Carvalho M. Diversity of Native Arbuscular Mycorrhiza Extraradical Mycelium Influences Antioxidant Enzyme Activity in Wheat Grown Under Mn Toxicity. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2022; 108:451-456. [PMID: 33891141 DOI: 10.1007/s00128-021-03240-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 04/14/2021] [Indexed: 06/12/2023]
Abstract
Sustainable agricultural practices based on the development of native arbuscular mycorrhizal fungi (AMF) can improve crop growth and stress tolerance in acidic soils with manganese toxicity. The beneficial effects are stronger when crops are colonized early in development by an intact extraradical mycelium (ERM), but are dependent on AMF assemblage. In wheat colonized by AMF associated to Lolium rigidum L. (LOL) or Ornithopus compressus (ORN), growth and stress tolerance are differently influenced. In the present study, this functional diversity was studied by evaluating the activity of ascorbate peroxidase (APX), catalase (CAT), glutathione reductase (GR), guaiacol peroxidase (GPX), superoxide dismutase (SOD) and Mn-SOD. ORN treatment promoted higher wheat shoot and root dry weights, a higher root protein content, decreased root APX, GR and SOD activities but a higher proportion of MnSOD activity. ORN associated microbiota differently manage antioxidant enzyme activity of succeeding wheat to improve growth.
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Affiliation(s)
- Jorge M S Faria
- INIAV, I.P., Instituto Nacional de Investigação Agrária E Veterinária, Quinta Do Marquês, 2780-159, Oeiras, Portugal.
- MED, Mediterranean Institute for Agriculture, Environment and Development, Institute for Advanced Studies and Research, Évora University, Pólo da Mitra, Ap. 94, 7006-554, Évora, Portugal.
| | - Ana Paula Pinto
- MED, Mediterranean Institute for Agriculture, Environment and Development, Institute for Advanced Studies and Research, Évora University, Pólo da Mitra, Ap. 94, 7006-554, Évora, Portugal
- Science and Technology School of Évora University, Rua Romão Ramalho nº59, 7000-671, Évora, Portugal
| | - Dora Teixeira
- Science and Technology School of Évora University, Rua Romão Ramalho nº59, 7000-671, Évora, Portugal
- HERCULES Laboratory, Évora University, Largo Marquês de Marialva 8, 7000-809, Évora, Portugal
| | - Isabel Brito
- MED, Mediterranean Institute for Agriculture, Environment and Development, Institute for Advanced Studies and Research, Évora University, Pólo da Mitra, Ap. 94, 7006-554, Évora, Portugal
- Science and Technology School of Évora University, Rua Romão Ramalho nº59, 7000-671, Évora, Portugal
| | - Mário Carvalho
- MED, Mediterranean Institute for Agriculture, Environment and Development, Institute for Advanced Studies and Research, Évora University, Pólo da Mitra, Ap. 94, 7006-554, Évora, Portugal
- Science and Technology School of Évora University, Rua Romão Ramalho nº59, 7000-671, Évora, Portugal
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Luo J, Li X, Jin Y, Traore I, Dong L, Yang G, Wang Y. Effects of Arbuscular Mycorrhizal Fungi Glomus mosseae on the Growth and Medicinal Components of Dysosma versipellis Under Copper Stress. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2021; 107:924-930. [PMID: 31894371 DOI: 10.1007/s00128-019-02780-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 12/27/2019] [Indexed: 05/08/2023]
Abstract
In order to investigate the effects of arbuscular mycorrhizal fungi (AMF) (Glomus mosseae) inoculations and additions of copper (Cu) ion at gradual concentrations (0, 200, and 400 mg kg-1) on different parameters of Dysosma versipellis such as growth, lipid peroxidation (MDA and MRP), antioxidation enzymatic (SOD, POD and CAT) activities, and active medicinal components. Pot experiments have been conducted. The results showed that additions of Cu could inhibit growth and the activity of antioxidant enzymes, increase the degree of membrane lipid peroxidation, and decrease the podophyllotoxin content of D. versipellis compared with the control. Meanwhile, inoculations with AMF enhanced its antioxidant capacity and reduced the degree of membrane lipid peroxidation in leaves of D. versipellis under Cu stress. Besides, AMF inoculations significantly increased the biomass and content of podophyllotoxin in roots of D. versipellis, while it decreased Cu absorption content in roots. Thus, inoculations with AMF could effectively alleviate the Cu stress and improve the active components content of D. versipellis, which might be important for Cu stress adaptation and the improved productivity and quality of D. versipellis.
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Affiliation(s)
- Jie Luo
- Academy of Yuanpei, Shaoxing University, Shaoxing, 312000, Zhejiang, China
| | - Xue Li
- Academy of Yuanpei, Shaoxing University, Shaoxing, 312000, Zhejiang, China
| | - Yefei Jin
- Academy of Life Science, Shaoxing University, Shaoxing, 312000, Zhejiang, China
| | - Ibrahim Traore
- Academy of Life Science, Shaoxing University, Shaoxing, 312000, Zhejiang, China
| | - Lijia Dong
- Academy of Life Science, Shaoxing University, Shaoxing, 312000, Zhejiang, China
| | - Guo Yang
- Academy of Life Science, Shaoxing University, Shaoxing, 312000, Zhejiang, China.
| | - Youbao Wang
- Anhui Provincial Key Lab of the Conservation and Exploitation of Biological Resources, Anhui Normal University, Wuhu, 241000, Anhui, China.
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Faria JMS, Teixeira DM, Pinto AP, Brito I, Barrulas P, Alho L, Carvalho M. Toxic levels of manganese in an acidic Cambisol alters antioxidant enzymes activity, element uptake and subcellular distribution in Triticum aestivum. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 193:110355. [PMID: 32120164 DOI: 10.1016/j.ecoenv.2020.110355] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 02/13/2020] [Accepted: 02/16/2020] [Indexed: 06/10/2023]
Abstract
In the Montado system, in Portuguese Alentejo region, some Eutric Cambisols are known to promote manganese (Mn) toxicity in wheat. Variation on bioavailable Mn concentration depends on soil acidity, which can be increased by natural events (e.g. waterlogging) or human activity (e.g. excess use of chemical fertilizers). The effect of increasing soil Mn on crop element uptake, element distribution and oxidative stress was evaluated on winter wheat (Triticum aestivum). Plants were grown for 3 weeks in an acidic Cambisol spiked with increasing Mn concentrations (0, 45.2 and 90.4 mg MnCl2/Kg soil). Calcium (Ca), phosphorus (P), magnesium (Mg) and Mn were quantified in the soil solution, root and shoot tissues and respective subcellular fractions. The activity of the antioxidant enzymes ascorbate peroxidase (APX), catalase (CAT), glutathione reductase (GR), guaiacol peroxidase (GPX) and superoxide dismutase (SOD) were determined in extracts of wheat shoots and roots. Overall, increase in soil bioavailable Mn inhibited the uptake of other elements, increased the Ca proportion in the root apoplast, promoted the translocation of Mn and P to shoot tissues and increased their proportion in the shoot vacuoles. Wheat roots showed greater antioxidant enzymes activities than shoots. These activities decreased at the highest soil Mn concentration in both plant parts. Wheat roots appear to be more sensitive to oxidative stress derived from excess soil Mn and promote Mn translocation and storage in shoot vacuoles, probably in Mn and P complexes, as a detoxification strategy. Improvement in wheat production, in acidic soils, may rely on the enhancement of its Mn detoxification strategies.
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Affiliation(s)
- Jorge M S Faria
- MED, Mediterranean Institute for Agriculture, Environment and Development, Institute for Advanced Studies and Research, Évora University, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal.
| | - Dora Martins Teixeira
- HERCULES Laboratory, Évora University, Largo Marquês de Marialva 8, 7000-809 Évora, Portugal; Science and Technology School of Évora University, Rua Romão Ramalho nº59, 7000-671 Évora, Portugal.
| | - Ana Paula Pinto
- MED, Mediterranean Institute for Agriculture, Environment and Development, Institute for Advanced Studies and Research, Évora University, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal; Science and Technology School of Évora University, Rua Romão Ramalho nº59, 7000-671 Évora, Portugal.
| | - Isabel Brito
- MED, Mediterranean Institute for Agriculture, Environment and Development, Institute for Advanced Studies and Research, Évora University, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal; Science and Technology School of Évora University, Rua Romão Ramalho nº59, 7000-671 Évora, Portugal.
| | - Pedro Barrulas
- HERCULES Laboratory, Évora University, Largo Marquês de Marialva 8, 7000-809 Évora, Portugal.
| | - Luís Alho
- MED, Mediterranean Institute for Agriculture, Environment and Development, Institute for Advanced Studies and Research, Évora University, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal; Science and Technology School of Évora University, Rua Romão Ramalho nº59, 7000-671 Évora, Portugal.
| | - Mário Carvalho
- MED, Mediterranean Institute for Agriculture, Environment and Development, Institute for Advanced Studies and Research, Évora University, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal; Science and Technology School of Évora University, Rua Romão Ramalho nº59, 7000-671 Évora, Portugal.
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11
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Pogrzeba M, Rusinowski S, Krzyżak J, Szada-Borzyszkowska A, McCalmont JP, Zieleźnik-Rusinowska P, Słaboń N, Sas-Nowosielska A. Dactylis glomerata L. cultivation on mercury contaminated soil and its physiological response to granular sulphur aided phytostabilization. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 255:113271. [PMID: 31550655 DOI: 10.1016/j.envpol.2019.113271] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 08/27/2019] [Accepted: 09/17/2019] [Indexed: 06/10/2023]
Abstract
Most mercury (Hg) deposition in the environment results from anthropogenic inputs, Chlor-Alkali Plants (CAPs) particularly had a significant Hg impact on the environment at a regional scale. Exposure to mercury compounds resulting in various toxic effects for living organisms. The aim of this study was to investigate the capacity of granular sulphur (S) soil amendment and cultivation of Dactylis glomerata to decrease gaseous mercury emission to the atmosphere and mercury mobility in soils affected by CAP activity in the past. The effect of this approach on D. glomerata physiological status was also assessed (Hg concentration in biomass, chlorophyll a fluorescence, pigment contents and oxidative stress). Stabilization of mercury in soil and reduction of root and shoot concentration did not influence biomass production. Despite similar yields, photosynthetic efficiency was higher for plants grown in sulphur amended soil compared to unamended soil, particularly observed in phenomenological energy fluxes. Relative chlorophyll content was 30% lower for amended soil plants, however based on chlorophyll fluorescence data those were in high portion ineffective. Oxidative stress products and catalase activity did not differ significantly between experimental treatments. Sulphur amendment was a key factor for reduction of Hg mobility in soil (reduced by about 30%) while plant cover was significant for the reduction of Hg atmospheric emission (emissions were 2-times higher in sulphur amended soil without plant cover). Due to the very high concentration of Hg in soil (798.2 ± 7.3 mg kg-1), growth inhibition was consistent regardless of treatment, demonstrated in the overload Reactive Oxygen Species scavenging mechanism and similar biomass yields. This leads to the conclusion that Hg may have greater impact on Calvin-Benson cycle associated enzymes than on the light-dependent photosynthesis phase. Despite these limitations this approach may still decrease environmental risks by reducing Hg emission to the atmosphere and reducing groundwater contamination.
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Affiliation(s)
- Marta Pogrzeba
- Institute for Ecology of Industrial Areas, 6 Kossutha St., 40-844, Katowice, Poland.
| | - Szymon Rusinowski
- Institute for Ecology of Industrial Areas, 6 Kossutha St., 40-844, Katowice, Poland
| | - Jacek Krzyżak
- Institute for Ecology of Industrial Areas, 6 Kossutha St., 40-844, Katowice, Poland
| | | | - Jon Paul McCalmont
- College of Life and Environmental Sciences, Exeter University, United Kingdom
| | - Paulina Zieleźnik-Rusinowska
- Department of Plant Physiology, Faculty of Biology and Environmental Protection, University of Silesia in Katowice, 28 Jagiellońska Street, 40-032, Katowice, Poland
| | - Norbert Słaboń
- Institute for Ecology of Industrial Areas, 6 Kossutha St., 40-844, Katowice, Poland
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12
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Lima FRD, Martins GC, Silva AO, Vasques ICF, Engelhardt MM, Cândido GS, Pereira P, Reis RHCL, Carvalho GS, Windmöller CC, Moreira FMS, Guilherme LRG, Marques JJ. Critical mercury concentration in tropical soils: Impact on plants and soil biological attributes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 666:472-479. [PMID: 30802662 DOI: 10.1016/j.scitotenv.2019.02.216] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 02/12/2019] [Accepted: 02/13/2019] [Indexed: 06/09/2023]
Abstract
Mercury is a toxic element that becomes a problem when present at high concentrations in soils. Mercury toxicity in soils varies depending on chemical species, concentration, exposure routes, and organism vulnerability. There is little information regarding the toxicity of Hg in tropical soils, especially for establishing safe levels of this pollutant. The purpose of this study was to investigate Hg concentrations in two tropical soils and their effect on oats and common beans, as well as on soil biological attributes. The experiment was carried out in a greenhouse, following ISO 11.269-2 and OECD-208 guidelines. Oat and common bean were cultivated in a Typic Hapludox (TyHpx) and Rhodic Acrudox (RhAcx) contaminated with HgCl2 at the following concentrations: 0, 2.5, 5.0, 10.0, 20.0, 40.0, and 80.0 mg of Hg kg-1 of dry soil. The biological variables analyzed were seedling emergence, vegetative growth, chlorophyll content (SPAD index), gas exchange (photosynthetic rate, internal CO2 concentration, transpiration rate, and stomatal conductance), and Hg concentration and accumulation in shoot dry matter. Microbial biomass carbon, soil basal respiration, and metabolic quotient (qCO2) were also analyzed. Due to the sorptive characteristics of TyHpx, it had higher Hg concentrations than RhAcx. Mercury showed toxic effects on both oat and common bean species. However, common bean was affected only at concentrations higher than 20 mg kg-1. The microbial community showed high sensitivity to soil Hg concentrations, but external factors, such as the plant species cultivated, influenced the sensitivity of the community. The microbiota was most sensitive in pots with common bean, and this effect was more pronounced at low clay and low organic matter contents (TyHpx). In this study, the concentration of 0.36 mg kg-1 was critical for Hg in these soils, based on its deleterious effects on oat and common bean and on biological soil attributes.
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Affiliation(s)
- F R D Lima
- Departamento de Ciência do Solo, Universidade Federal de Lavras, Lavras 37200-000, Minas Gerais State, Brazil
| | - G C Martins
- Instituto Tecnológico Vale, Belém 66055-090, Pará State, Brazil
| | - A O Silva
- Departamento de Ciência do Solo, Universidade Federal de Lavras, Lavras 37200-000, Minas Gerais State, Brazil
| | - I C F Vasques
- Departamento de Ciência do Solo, Universidade Federal de Lavras, Lavras 37200-000, Minas Gerais State, Brazil
| | - M M Engelhardt
- Departamento de Ciência do Solo, Universidade Federal de Lavras, Lavras 37200-000, Minas Gerais State, Brazil
| | - G S Cândido
- Departamento de Ciência do Solo, Universidade Federal de Lavras, Lavras 37200-000, Minas Gerais State, Brazil
| | - P Pereira
- Departamento de Ciência do Solo, Universidade Federal de Lavras, Lavras 37200-000, Minas Gerais State, Brazil
| | - R H C L Reis
- Departamento de Ciência do Solo, Universidade Federal de Lavras, Lavras 37200-000, Minas Gerais State, Brazil
| | - G S Carvalho
- Departamento de Ciência do Solo, Universidade Federal de Lavras, Lavras 37200-000, Minas Gerais State, Brazil
| | - C C Windmöller
- Departamento de Química, ICEX, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Minas Gerais State, Brazil
| | - F M S Moreira
- Departamento de Ciência do Solo, Universidade Federal de Lavras, Lavras 37200-000, Minas Gerais State, Brazil
| | - L R G Guilherme
- Departamento de Ciência do Solo, Universidade Federal de Lavras, Lavras 37200-000, Minas Gerais State, Brazil
| | - J J Marques
- Departamento de Ciência do Solo, Universidade Federal de Lavras, Lavras 37200-000, Minas Gerais State, Brazil.
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13
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Xun Y, Feng L, Li Y, Dong H. Mercury accumulation plant Cyrtomium macrophyllum and its potential for phytoremediation of mercury polluted sites. CHEMOSPHERE 2017; 189:161-170. [PMID: 28934656 DOI: 10.1016/j.chemosphere.2017.09.055] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 09/12/2017] [Accepted: 09/12/2017] [Indexed: 06/07/2023]
Abstract
Cyrtomium macrophyllum naturally grown in 225.73 mg kg-1 of soil mercury in mining area was found to be a potential mercury accumulator plant with the translocation factor of 2.62 and the high mercury concentration of 36.44 mg kg-1 accumulated in its aerial parts. Pot experiments indicated that Cyrtomium macrophyllum could even grow in 500 mg kg-1 of soil mercury with observed inhibition on growth but no obvious toxic effects, and showed excellent mercury accumulation and translocation abilities with both translocation and bioconcentration factors greater than 1 when exposed to 200 mg kg-1 and lower soil mercury, indicating that it could be considered as a great mercury accumulating species. Furthermore, the leaf tissue of Cyrtomium macrophyllum showed high resistance to mercury stress because of both the increased superoxide dismutase activity and the accumulation of glutathione and proline induced by mercury stress, which favorited mercury translocation from the roots to the aerial parts, revealing the possible reason for Cyrtomium macrophyllum to tolerate high concentration of soil mercury. In sum, due to its excellent mercury accumulation and translocation abilities as well as its high resistance to mercury stress, the use of Cyrtomium macrophyllum should be a promising approach to remediating mercury polluted soils.
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Affiliation(s)
- Yu Xun
- Department of Environmental Engineering and Sciences, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Liu Feng
- Department of Environmental Engineering and Sciences, Beijing University of Chemical Technology, Beijing 100029, PR China.
| | - Youdan Li
- Department of Environmental Engineering and Sciences, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Haochen Dong
- Department of Environmental Engineering and Sciences, Beijing University of Chemical Technology, Beijing 100029, PR China
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14
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Khan WUD, Ramzani PMA, Anjum S, Abbas F, Iqbal M, Yasar A, Ihsan MZ, Anwar MN, Baqar M, Tauqeer HM, Virk ZA, Khan SA. Potential of miscanthus biochar to improve sandy soil health, in situ nickel immobilization in soil and nutritional quality of spinach. CHEMOSPHERE 2017; 185:1144-1156. [PMID: 28764135 DOI: 10.1016/j.chemosphere.2017.07.097] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 07/06/2017] [Accepted: 07/18/2017] [Indexed: 06/07/2023]
Abstract
The complex interaction of biochar (BC) with soil health reflecting properties, the feedstock used to prepare BC and application rate of BC in sandy soil is still a question for the researchers. An incubation study was conducted where nine different sorts of BC, each prepared from the different feedstock, were applied at 2% rate to evaluate their relative suitability to improve sandy soil health. Results revealed that BC prepared from miscanthus (MIB) significantly increased soil medium and fine pores, available water content (AWC), electrical conductivity (EC), and cation exchange capacity (CEC) while decreased soil wide pores, pH, bulk density (BD) and particle density (PD) compared to the rest sorts of BC. Later, spinach was grown in pots containing same soil but spiked with 50 ppm nickel (Ni) and amended with 1, 2, 3, 4 and 5% rates of MIB. The results showed a significant increment in spinach biomass, reduction in the concentrations of Ni in spinach tissues and DTPA-extractable Ni with the increasing rate of MIB till 3% and later, no significant changes with 4 and 5% rates thereafter. However, significant improvement in the activities of antioxidant enzymes, chemical and biochemical attributes of spinach were observed at 5% MIB when compared to lower rates. Similarly, post-harvest soil physicochemical and enzymatic parameters were also significantly (P < 0.05) improved with increasing rates of MIB. This study implies that application of MIB at 5% rate can improve the nutritional quality of spinach, sandy soil health and can reduce Ni concentrations in spinach tissues.
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Affiliation(s)
- Waqas-Ud-Din Khan
- Sustainable Development Study Center, Government College University, Lahore 54000, Pakistan
| | | | - Shazia Anjum
- Cholistan Institute of Desert Studies, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Farhat Abbas
- Department of Environmental Sciences and Engineering, Government College University, Allama Iqbal Road, Faisalabad 38000, Pakistan
| | - Muhammad Iqbal
- Department of Environmental Sciences and Engineering, Government College University, Allama Iqbal Road, Faisalabad 38000, Pakistan.
| | - Abdullah Yasar
- Sustainable Development Study Center, Government College University, Lahore 54000, Pakistan
| | - Muhammad Zahid Ihsan
- Cholistan Institute of Desert Studies, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan
| | - Muhammad Naveed Anwar
- Sustainable Development Study Center, Government College University, Lahore 54000, Pakistan
| | - Mujtaba Baqar
- Sustainable Development Study Center, Government College University, Lahore 54000, Pakistan
| | - Hafiz Muhammad Tauqeer
- Department of Environmental Sciences, University of Gujrat, Hafiz Hayat Campus, Gujrat 50700, Pakistan
| | - Zaheer Abbas Virk
- Department of Environmental Sciences and Engineering, Government College University, Allama Iqbal Road, Faisalabad 38000, Pakistan
| | - Shahbaz Ali Khan
- Department of Environmental Sciences and Engineering, Government College University, Allama Iqbal Road, Faisalabad 38000, Pakistan
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15
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Hou J, Liu X, Cui B, Bai J, Wang X. Microarray analysis and real-time PCR assay developed to find biomarkers for mercury-contaminated soil. Toxicol Res (Camb) 2016; 5:1539-1547. [PMID: 30090455 PMCID: PMC6062303 DOI: 10.1039/c6tx00210b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 08/25/2016] [Indexed: 02/06/2023] Open
Abstract
The evaluation of mercury (Hg) toxicity in agricultural soil is of great concern because its bioavailability and bioaccumulation in organisms through the food chain can have adverse effects on human health. Therefore, the aim of this study was to develop sensitive biomarkers for Hg stress in agricultural soil. With the results obtained from a high-throughput cDNA microarray, 12 Hg-responsive genes were selected to examine their concentration-dependent responses to Hg stress at different Hg concentrations. The lowest observable adverse effect concentrations (LOAECs) of Hg were 0.8 mg kg-1 for seed germination, 1.6 mg kg-1 for root biomass, 0.8 mg kg-1 for root elongation, and 0.8 mg kg-1 for root morphology, respectively, whereas the lowest Hg treatments (0.1-0.4 mg kg-1) could generally induce differential expression of genes. These results indicated that the detection of Hg in soil at the molecular level is a highly sensitive method. Moreover, the Hg soil content exhibited a significant positive correlation with the relative expression of probable glutathione S-transferase parA (r = 0.637, p = 0.05), chlorophyll a-b binding protein 13, chloroplastic-like (r = 0.689, p = 0.05) and geranylgeranyl pyrophosphate synthase 1 (r = 0.682, p = 0.05), implying that the three genes are good candidates to detect Hg-contaminated soil.
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Affiliation(s)
- Jing Hou
- School of Environment and Chemical Engineering , North China Electric Power University , Beijing 102206 , China . ; ; Tel: +86-10-61772890
| | - Xinhui Liu
- State Key Laboratory of Water Environment Simulation , School of Environment , Beijing Normal University , Beijing 100875 , China . ; ; Tel: +86-10-58802996
| | - Baoshan Cui
- State Key Laboratory of Water Environment Simulation , School of Environment , Beijing Normal University , Beijing 100875 , China . ; ; Tel: +86-10-58802996
| | - Junhong Bai
- State Key Laboratory of Water Environment Simulation , School of Environment , Beijing Normal University , Beijing 100875 , China . ; ; Tel: +86-10-58802996
| | - Xiangke Wang
- School of Environment and Chemical Engineering , North China Electric Power University , Beijing 102206 , China . ; ; Tel: +86-10-61772890
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16
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Regier N, Beauvais-Flück R, Slaveykova VI, Cosio C. Elodea nuttallii exposure to mercury exposure under enhanced ultraviolet radiation: Effects on bioaccumulation, transcriptome, pigment content and oxidative stress. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2016; 180:218-226. [PMID: 27744139 DOI: 10.1016/j.aquatox.2016.10.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 09/16/2016] [Accepted: 10/01/2016] [Indexed: 06/06/2023]
Abstract
The hypothesis that increased UV radiation result in co-tolerance to Hg toxicity in aquatic plants was studied at the physiological and transcriptomic level in Elodea nuttallii. At the transcriptomic level, combined exposure to UV+Hg enhanced the stress response in comparison with single treatments, affecting the expression level of transcripts involved in energy metabolism, lipid metabolism, nutrition, and redox homeostasis. Single and combined UV and Hg treatments dysregulated different genes but with similar functions, suggesting a fine regulation of the plant to stresses triggered by Hg, UV and their combination but lack of co-tolerance. At the physiological level, UV+Hg treatment reduced chlorophyll content and depleted antioxidative compounds such as anthocyanin and GSH/GSSG in E. nuttallii. Nonetheless, combined exposure to UV+Hg resulted in about 30% reduction of Hg accumulation into shoots vs exposure to Hg alone, which was congruent with the level of expression of several transporter genes, as well as the UV effect on Hg bioavailability in water. The findings of the present work underlined the importance of performing experimentation under environmentally realistic conditions and to consider the interplay between contaminants and environmental variables such as light that might have confounding effects to better understand and anticipate the effects of multiple stressors in aquatic environment.
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Affiliation(s)
- Nicole Regier
- Environmental Biogeochemistry and Ecotoxicology, Institute F.-A. Forel, Earth and Environmental Sciences, Faculty of Sciences, University of Geneva, 66 boulevard Carl-Vogt, CH-1211 Geneva, Switzerland
| | - Rebecca Beauvais-Flück
- Environmental Biogeochemistry and Ecotoxicology, Institute F.-A. Forel, Earth and Environmental Sciences, Faculty of Sciences, University of Geneva, 66 boulevard Carl-Vogt, CH-1211 Geneva, Switzerland
| | - Vera I Slaveykova
- Environmental Biogeochemistry and Ecotoxicology, Institute F.-A. Forel, Earth and Environmental Sciences, Faculty of Sciences, University of Geneva, 66 boulevard Carl-Vogt, CH-1211 Geneva, Switzerland
| | - Claudia Cosio
- Environmental Biogeochemistry and Ecotoxicology, Institute F.-A. Forel, Earth and Environmental Sciences, Faculty of Sciences, University of Geneva, 66 boulevard Carl-Vogt, CH-1211 Geneva, Switzerland.
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17
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Száková J, Havlíčková J, Šípková A, Gabriel J, Švec K, Baldrian P, Sysalová J, Coufalík P, Červenka R, Zvěřina O, Komárek J, Tlustoš P. Effects of the soil microbial community on mobile proportions and speciation of mercury (Hg) in contaminated soil. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2016; 51:364-370. [PMID: 26761522 DOI: 10.1080/10934529.2015.1109413] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The precise characterization of the behavior of individual microorganisms in the presence of increased mercury contents in soil is necessary for better elucidation of the fate of mercury in the soil environment. In our investigation, resistant bacterial strains isolated from two mercury contaminated soils, represented by Paenibacillus alginolyticus, Burkholderia glathei, Burkholderia sp., and Pseudomonas sp., were used. Two differently contaminated soils (0.5 and 7 mg kg(-1) total mercury) were chosen. Preliminary soil analysis showed the presence of methylmercury and phenylmercury with the higher soil mercury level. Modified rhizobox experiments were performed to assess the ability of mercury accumulating strains to deplete the mobile and mobilizable mercury portions in the soil by modification; microbial agar cultures were used rather than the plant root zone. A sequential extraction procedure was performed to release the following mercury fractions: water soluble, extracted in acidic conditions, bound to humic substances, elemental, and bound to complexes, HgS and residual. Inductively coupled plasma mass spectrometry (ICP-MS) and a single-purpose atomic absorption spectrometer (AMA-254) were applied for mercury determination in the samples and extracts. Gas chromatography coupled to atomic fluorescence spectrometry (GC-AFS) was used for the determination of organomercury compounds. The analysis of the microbial community at the end of the experiment showed a 42% abundance of Paenibacillus sp. followed by Acetivibrio sp., Brevibacillus sp., Cohnella sp., Lysinibacillus sp., and Clostridium sp. not exceeding 2% abundance. The results suggest importance of Paenibacillus sp. in Hg transformation processes. This genus should be tested for potential bioremediation use in further research.
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Affiliation(s)
- Jiřina Száková
- a Department of Agroenvironmental Chemistry and Plant Nutrition , Czech University of Life Sciences Prague , Prague , Czech Republic
| | - Jitka Havlíčková
- a Department of Agroenvironmental Chemistry and Plant Nutrition , Czech University of Life Sciences Prague , Prague , Czech Republic
| | - Adéla Šípková
- a Department of Agroenvironmental Chemistry and Plant Nutrition , Czech University of Life Sciences Prague , Prague , Czech Republic
| | - Jiří Gabriel
- b Institute of Microbiology, Vídeňská , Prague , Czech Republic
| | - Karel Švec
- b Institute of Microbiology, Vídeňská , Prague , Czech Republic
| | - Petr Baldrian
- b Institute of Microbiology, Vídeňská , Prague , Czech Republic
| | - Jiřina Sysalová
- c Atomic Absorption Spectrometry Laboratory, Institute of Chemical Technology , Prague , Czech Republic
| | - Pavel Coufalík
- d Department of Chemistry, Faculty of Science , Masaryk University , Brno , Czech Republic
- e Institute of Analytical Chemistry, Academy of Sciences of the Czech Republic , Brno , Czech Republic
| | - Rostislav Červenka
- d Department of Chemistry, Faculty of Science , Masaryk University , Brno , Czech Republic
| | - Ondřej Zvěřina
- d Department of Chemistry, Faculty of Science , Masaryk University , Brno , Czech Republic
- f Department of Public Health, Faculty of Medicine , Masaryk University , Brno , Czech Republic
| | - Josef Komárek
- d Department of Chemistry, Faculty of Science , Masaryk University , Brno , Czech Republic
| | - Pavel Tlustoš
- a Department of Agroenvironmental Chemistry and Plant Nutrition , Czech University of Life Sciences Prague , Prague , Czech Republic
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18
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Li Y, Wang L, Yang L, Li H. Dynamics of rhizosphere properties and antioxidative responses in wheat (Triticum aestivum L.) under cadmium stress. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2014; 102:55-61. [PMID: 24580822 DOI: 10.1016/j.ecoenv.2014.01.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 01/08/2014] [Accepted: 01/08/2014] [Indexed: 05/08/2023]
Abstract
In this study, we performed a rhizobox experiment to examine the dynamic changes in the rhizosphere properties and antioxidant enzyme responses of Triticum aestivum L. under three levels of cadmium stress. A set of micro-techniques (i.e., Rhizobox and Rhizon SMS) were applied for the dynamically non-destructive collection of the rhizosphere soil solution to enable the observation at a high temporal resolution. The dynamics of soluble cadmium and dissolved organic carbon (DOC) in the rhizosphere soil solutions of the Triticum aestivum L. were characterised by the sequence week 0 after sowing (WAS0)<3 weeks after sowing (WAS3)<10 weeks after sowing (WAS10), whereas the soil solution pH was found to follow an opposite distribution pattern. Systematically, both superoxide dismutase (SOD) and catalase (CAT) activities in the leaves of the Triticum aestivum L. increased concomitantly with increasing cadmium levels (p>0.05) and growth duration (p<0.05), whilst ascorbate peroxidase (APX) activity was induced to an elevated level at moderate cadmium stress with a decrease at high cadmium stress (p>0.05). These results suggested the enhancement of DOC production and the greater antioxidant enzyme activities were two important protective mechanisms of Triticum aestivum L. under cadmium stress, whereas rhizosphere acidification might be an important mechanism for the mobilisation of soil cadmium. The results also revealed that plant-soil interactions strongly influence the soil solution chemistry in the rhizosphere of Triticum aestivum L., that, in turn, can stimulate chemical and biochemical responses in the plants. In most cases, these responses to cadmium stress were sensitive and might allow us to develop strategies for reducing the risks of the cadmium contamination to crop production.
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Affiliation(s)
- Yonghua Li
- Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, 11A Datun Road, Chaoyang District, Beijing 100101, China.
| | - Li Wang
- Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, 11A Datun Road, Chaoyang District, Beijing 100101, China; Department of International Health, Faculty of Health, Medicine and Life Sciences, Maastricht University, 6200 MD, Maastricht, The Netherlands
| | - Linsheng Yang
- Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, 11A Datun Road, Chaoyang District, Beijing 100101, China
| | - Hairong Li
- Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, 11A Datun Road, Chaoyang District, Beijing 100101, China.
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