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Soltangheisi A, Hales-Henao A, Pena R, Tibbett M. Species-specific effects of mycorrhizal symbiosis on Populus trichocarpa after a lethal dose of copper. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 272:116112. [PMID: 38354434 DOI: 10.1016/j.ecoenv.2024.116112] [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: 06/21/2023] [Revised: 01/24/2024] [Accepted: 02/11/2024] [Indexed: 02/16/2024]
Abstract
Poplars have been identified as heavy metals hyperaccumulators and can be used for phytoremediation. We have previously established that their symbiosis with arbuscular mycorrhizal fungi (AMF) may alter their uptake, tolerance and distribution to excess concentrations of heavy metals in soils. In this study we hypothesised that mycorrhizal symbiosis improves the tolerance of poplars to lethal copper (Cu) concentrations, but this influence may vary among different AMF species. We conducted an experiment in a growth chamber with three Cu application levels of control (0 mg kg-1), threshold-lethal (729 mg kg-1) and supra-lethal (6561 mg kg-1), and three mycorrhizal treatments (non-mycorrhizal, Rhizophagus irregularis, and Paraglomus laccatum) in a completely randomized design with six replications. The poplars did not grow after application of 729 mg Cu kg-1 substrate, and mycorrhizal symbiosis did not help plants to tolerate this level of Cu. This can be explained by the toxicity suffered by mycorrhizal fungi. Translocation of Cu from roots to shoots increased when plants were colonised with R. irregularis and P. laccatum under threshold-lethal and supra-lethal applications of Cu, respectively. This result shows that mycorrhizal mediation of Cu partitioning in poplars depends on the fungal species and substrate Cu concentration. Multi-model inference analysis within each mycorrhizal treatment showed that in plants colonised with R. irregularis, a higher level of mycorrhizal colonisation may prevent Cu transfer to the shoots. We did not observe this effect in P. laccatum plants probably due to the relatively low colonisation rate (14%). Nutrient concentrations in roots and shoots were impacted by applied substrate Cu levels, but not by mycorrhizas. Magnesium (Mg), potassium (K), and manganese (Mn) concentrations in roots reduced with enhancing applied substrate Cu due to their similar ionic radii with Cu and having common transport mechanism. Synergistic effect on shoot concentration between applied substrate Cu levels and Mg, K, calcium, iron (Fe), and zinc was observed. Root Cu concentration was inversely related with root K and Mn concentrations, and shoot Cu concentration had a positive correlation with shoot Fe and K concentrations. Overall, mycorrhizal symbiosis has the potential to enhance plant health and their resilience to Cu toxicity in contamination events. However, it is important to note that the effectiveness of this symbiotic relationship varies among different mycorrhizal species and is influenced by the level of contamination.
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Affiliation(s)
- Amin Soltangheisi
- Department of Sustainable Land Management & Soil Research Centre, School of Agriculture, Policy and Development, University of Reading, Reading, United Kingdom; Environment Centre Wales, School of Natural Sciences, Bangor University, Bangor LL57 2UW, United Kingdom
| | - Aysha Hales-Henao
- Department of Sustainable Land Management & Soil Research Centre, School of Agriculture, Policy and Development, University of Reading, Reading, United Kingdom
| | - Rodica Pena
- Department of Sustainable Land Management & Soil Research Centre, School of Agriculture, Policy and Development, University of Reading, Reading, United Kingdom
| | - Mark Tibbett
- Department of Sustainable Land Management & Soil Research Centre, School of Agriculture, Policy and Development, University of Reading, Reading, United Kingdom; School of Biological Sciences, The University of Western Australia, Perth, Australia.
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Jiang Y, Wei C, Jiao Q, Li G, Alyemeni MN, Ahmad P, Shah T, Fahad S, Zhang J, Zhao Y, Liu F, Liu S, Liu H. Interactive effect of silicon and zinc on cadmium toxicity alleviation in wheat plants. JOURNAL OF HAZARDOUS MATERIALS 2023; 458:131933. [PMID: 37421854 DOI: 10.1016/j.jhazmat.2023.131933] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 06/12/2023] [Accepted: 06/23/2023] [Indexed: 07/10/2023]
Abstract
Silicon (Si) and Zinc (Zn) have been frequently used to alleviate cadmium (Cd) toxicity, which are feasible strategies for crop safety production. However, the mechanisms underlying the interaction of Si and Zn on alleviating Cd toxicity are not well understood. A hydroponic system was adopted to evaluate morphological, physiological-biochemical responses, and related gene expression of wheat seedlings to Si (1 mM) and Zn (50 µM) addition under Cd stress (10 µM). Cd induced obvious inhibition of wheat growth by disturbing photosynthesis and chlorophyll synthesis, provoking generation of reactive oxygen species (ROS) and interfering ion homeostasis. Cd concentration was decreased by 68.3%, 43.1% and 73.3% in shoot, and 78.9%, 44.1% and 85.8% in root by Si, Zn, and combination of Si with Zn, relative to Cd only, respectively. Si and Zn effectively ameliorated Cd toxicity and enhanced wheat growth; but single Si or combination of Si with Zn had more efficient ability on alleviating Cd stress than only Zn, indicating Si and Zn have synergistic effect on Cd toxicity; Interaction of them alleviated oxidative stress by reducing ROS content, improving AsA-GSH cycle and antioxidant enzymes activities, and regulating Cd into vacuole through PC-Cd complexes transported by HMA3 transporter. Our results suggest that fertilizers including Si and Zn should be made to reduce Cd content, which will beneficial for food production and safety.
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Affiliation(s)
- Ying Jiang
- College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, PR China
| | - Chang Wei
- College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, PR China
| | - Qiujuan Jiao
- College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, PR China
| | - Gezi Li
- National Engineering Research Center for Wheat, Henan Agricultural University, Zhengzhou 450046, PR China
| | - Mohammed Nasser Alyemeni
- Botany and Microbiology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Parvaiz Ahmad
- Department of Botany, GDC Pulwama, 192301 Jammu and Kashmir, India
| | - Tariq Shah
- Plant Science Research Unit, United States Department for Agriculture (USDA), ARS, Raleigh, NC, USA
| | - Shah Fahad
- Department of Agronomy, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa 23200, Pakistan
| | - Jingjing Zhang
- College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, PR China
| | - Ying Zhao
- College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, PR China
| | - Fang Liu
- College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, PR China
| | - Shiliang Liu
- College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, PR China
| | - Haitao Liu
- College of Resources and Environment, Henan Agricultural University, Zhengzhou 450046, PR China.
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Abdel-Aty AM, Elsayed AM, Gad AAM, Barakat AZ, Mohamed SA. Antioxidant system of garden cress sprouts for using in bio-monitor of cadmium and lead contamination. Sci Rep 2023; 13:10445. [PMID: 37369768 DOI: 10.1038/s41598-023-37430-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 06/21/2023] [Indexed: 06/29/2023] Open
Abstract
Based on garden cress significantly used for phytoremediation, the antioxidant system included antioxidant-phenolic compounds and antioxidant-enzymes of 6-day-garden cress sprouts (GCS) were assessed as potential bio-indicators for cadmium (Cd) and lead (Pb) contamination. Total phenolic and flavonoid contents of GCS germinated under Cd and Pb treatments (25-150 mg kg-1) gradually increased with increasing concentration of metals and peaked by 2.0, 2.6, and 2.5, 2.3 folds at 150 mg kg-1, respectively. By using DPPH, ABTS, and PMC antioxidant assays, the total antioxidant activity of phenolic compounds of GCS increased 6.1, 13.0, and 5.8-fold for Cd and 5.9, 14.6, and 8.2-fold for Pb at 150 mg kg-1, respectively. The antioxidant enzymes of GCS (POD, CAT, GR, and GST) were significantly activated in response to Cd and Pb stress, and two new electrophoretic POD bands were detected. GCS was absorbed 19.0% and 21.3% of Cd and Pb at 150 mg metal kg-1, respectively. In conclusion, the approaches of the antioxidant defense system of GSC could potentially be used as bio-indicator for monitoring Cd and Pb contamination in a short time of germination process.
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Affiliation(s)
- Azza M Abdel-Aty
- Molecular Biology Department, National Research Centre, Dokki, Cairo, Egypt
| | | | - Abdul Aziz M Gad
- Molecular Biology Department, National Research Centre, Dokki, Cairo, Egypt
| | - Amal Z Barakat
- Molecular Biology Department, National Research Centre, Dokki, Cairo, Egypt
| | - Saleh A Mohamed
- Molecular Biology Department, National Research Centre, Dokki, Cairo, Egypt.
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Tőzsér D, Horváth R, Simon E, Magura T. Heavy metal uptake by plant parts of Populus species: a meta-analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:69416-69430. [PMID: 37131011 DOI: 10.1007/s11356-023-27244-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 04/22/2023] [Indexed: 05/04/2023]
Abstract
Populus species are well documented for being potentially suitable for phytoremediation purposes regarding their accumulation characteristics. However, published results are contradictory. Based on the data gathered during an extensive literature search, we aimed to assess and revise the metal accumulation potential in the root, stem, and leaf of Populus species growing in contaminated soils, with meta-analysis. We evaluated the influences of pollution level, soil pH, and exposure time on the metal uptake patterns. We found accumulations of Cd, Cr, Cu, Pb, and Zn to be significant in each plant part, while that was only moderate for Ni, and limited for Mn. By calculating the soil pollution index (PI), we observed significantly intensive, PI-independent accumulation for Cd, Cr, Cu, Ni, Pb, and Zn. A decrease in soil pH significantly increased the uptake of Mn and significantly decreased the accumulation of Pb in the stem. Metal uptake was significantly influenced by exposure time as well; Cd concentration was significantly decreased in the stem, while concentrations of Cr in the stem and leaf, and Mn in the stem were significantly increased with time. These aforementioned findings support a well-founded metal-and-growth condition-specific application of poplars in phytoremediation processes, also triggering further in-depth assessments to enhance the efficiency of relevant poplar-based technologies.
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Affiliation(s)
- Dávid Tőzsér
- Department of Ecology, University of Debrecen, Egyetem sq. 1, Debrecen, H-4032, Hungary
- Circular Economy Analysis Center, Hungarian University of Agriculture and Life Sciences, Páter Károly str. 1, Gödöllő, H-2100, Hungary
| | - Roland Horváth
- Department of Ecology, University of Debrecen, Egyetem sq. 1, Debrecen, H-4032, Hungary.
- ELKH-DE Anthropocene Ecology Research Group, University of Debrecen, Egyetem sq. 1, Debrecen, H-4032, Hungary.
| | - Edina Simon
- Department of Ecology, University of Debrecen, Egyetem sq. 1, Debrecen, H-4032, Hungary
- ELKH-DE Anthropocene Ecology Research Group, University of Debrecen, Egyetem sq. 1, Debrecen, H-4032, Hungary
| | - Tibor Magura
- Department of Ecology, University of Debrecen, Egyetem sq. 1, Debrecen, H-4032, Hungary
- ELKH-DE Anthropocene Ecology Research Group, University of Debrecen, Egyetem sq. 1, Debrecen, H-4032, Hungary
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Zhang C, Yang B, Wang H, Xu X, Shi J, Qin G. Metal tolerance capacity and antioxidant responses of new Salix spp. clones in a combined Cd-Pb polluted system. PeerJ 2022; 10:e14521. [PMID: 36545381 PMCID: PMC9762249 DOI: 10.7717/peerj.14521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 11/15/2022] [Indexed: 12/23/2022] Open
Abstract
To investigate the physiochemical characteristics of two new clones, Salix matsudana 'J172' (A7) and Salix matsudana 'Yankang1' (A64) in combined Cd-Pb contaminated systems, a hydroponic experiment was designed. The plant biomass, photosynthesis, antioxidant responses and the accumulation of metals in different plant parts (leaf, stem, and root) were measured after 35-day treatments with Cd (15, 30 µM) and Pb (250, 500 µM). The results showed that exposure to Cd-Pb decreased the biomass but increased the net photosynthetic rate for both A7 and A64, demonstrating that photosynthesis may be one of the metabolic processes used to resist Cd-Pb stress. Compared with control, roots exposed to Cd-Pb had higher activity of superoxide dismutase and more malondialdehyde concentrations, which indicated the roots of both clones were apt to be damaged. The concentrations of soluble protein were obviously higher in the roots of A64 than A7, indicating the roles of the antioxidative substance were different between two willow clones. Soluble protein also had significant relationship with translocation factors from accumulation in roots of A64, which illustrated it played important roles in the tolerance of A64 roots to heavy metals. The roots could accumulate more Pb rather than transport to the shoots compared with Cd. The tolerance index was more than 85% on average for both clones under all the treatments, indicating their tolerance capacities to the combined stress of Cd and Pb are strong under the tested metal levels. Both clones are the good candidates for phytoremediation of Cd and Pb by the root filtration in the combined contamination environment.
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Affiliation(s)
- Chuanfeng Zhang
- School of Water Conservancy and Environment, University of Jinan, Jinan, Shandong province, China
| | - Baoshan Yang
- School of Water Conservancy and Environment, University of Jinan, Jinan, Shandong province, China
| | - Hui Wang
- School of Water Conservancy and Environment, University of Jinan, Jinan, Shandong province, China,Shaanxi Key Laboratory of Land Consolidation, Xi’an, Chian,Chang’an University, Xi’an, China
| | - Xiaohan Xu
- College of Horticulture, Nanjing Agricultural University, Nanjing, Jiangsu province, China
| | - Jiaxing Shi
- School of Water Conservancy and Environment, University of Jinan, Jinan, Shandong province, China
| | - Guanghua Qin
- Shandong Academy of Forestry, Jinan, Shandong province, China
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Lovreškov L, Radojčić Redovniković I, Limić I, Potočić N, Seletković I, Marušić M, Jurinjak Tušek A, Jakovljević T, Butorac L. Are Foliar Nutrition Status and Indicators of Oxidative Stress Associated with Tree Defoliation of Four Mediterranean Forest Species? PLANTS (BASEL, SWITZERLAND) 2022; 11:3484. [PMID: 36559596 PMCID: PMC9788295 DOI: 10.3390/plants11243484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/02/2022] [Accepted: 12/09/2022] [Indexed: 06/17/2023]
Abstract
Mediterranean forest ecosystems in Croatia are of very high significance because of the ecological functions they provide. This region is highly sensitive to abiotic stresses such as air pollution, high sunlight, and high temperatures alongside dry periods; therefore, it is important to monitor the state of these forest ecosystems and how they respond to these stresses. This study was conducted on trees in situ and focused on the four most important forest species in the Mediterranean region in Croatia: pubescent oak (Quercus pubescens Willd.), holm oak (Quercus ilex L.), Aleppo pine (Pinus halepensis Mill.) and black pine (Pinus nigra J. F. Arnold.). Trees were selected and divided into two groups: trees with defoliation of >25% (defoliated) and trees with defoliation of ≤25% (undefoliated). Leaves and needles were collected from selected trees. Differences in chlorophyll content, hydrogen peroxide content, lipid peroxidation and enzyme activity (superoxide dismutase, catalase, ascorbate peroxidase, non-specific peroxidase), and nutrient content between the defoliated and undefoliated trees of the examined species were determined. The results showed that there were significant differences for all species between the defoliated and undefoliated trees for at least one of the examined parameters. A principal component analysis showed that the enzyme ascorbate peroxidase can be an indicator of oxidative stress caused by ozone. By using oxidative stress indicators, it is possible to determine whether the trees are under stress even before visual damage occurs.
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Affiliation(s)
- Lucija Lovreškov
- Croatian Forest Research Institute, Cvjetno Naselje 41, 10450 Jastrebarsko, Croatia
| | | | - Ivan Limić
- Institute for Adriatic Crops and Karst Reclamation, Put Duilova 11, 21000 Split, Croatia
| | - Nenad Potočić
- Croatian Forest Research Institute, Cvjetno Naselje 41, 10450 Jastrebarsko, Croatia
| | - Ivan Seletković
- Croatian Forest Research Institute, Cvjetno Naselje 41, 10450 Jastrebarsko, Croatia
| | - Mia Marušić
- Croatian Forest Research Institute, Cvjetno Naselje 41, 10450 Jastrebarsko, Croatia
| | - Ana Jurinjak Tušek
- Faculty of Food Technology and Biotechnology, University of Zagreb, Pierottijeva 6, 10000 Zagreb, Croatia
| | - Tamara Jakovljević
- Croatian Forest Research Institute, Cvjetno Naselje 41, 10450 Jastrebarsko, Croatia
| | - Lukrecija Butorac
- Institute for Adriatic Crops and Karst Reclamation, Put Duilova 11, 21000 Split, Croatia
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Shi W, Li J, Kan D, Yu W, Chen X, Zhang Y, Ma C, Deng S, Zhou J, Fayyaz P, Luo ZB. Sulfur metabolism, organic acid accumulation and phytohormone regulation are crucial physiological processes modulating the different tolerance to Pb stress of two contrasting poplars. TREE PHYSIOLOGY 2022; 42:1799-1811. [PMID: 35313352 DOI: 10.1093/treephys/tpac033] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 03/16/2022] [Indexed: 06/14/2023]
Abstract
To investigate the pivotal physiological processes modulating lead (Pb) tolerance capacities of poplars, the saplings of two contrasting poplar species, Populus × canescens with high Pb sensitivity and Populus nigra with relatively low Pb sensitivity, were treated with either 0 or 8 mM Pb for 6 weeks. Lead was absorbed by the roots and accumulated massively in the roots and leaves, leading to overproduction of reactive oxygen species, reduced photosynthesis and biomass in both poplar species. Particularly, the tolerance index of P. × canescens was significantly lower than that of P. nigra. Moreover, the physiological responses including the concentrations of nutrient elements, thiols, organic acids, phytohormones and nonenzymatic antioxidants, and the activities of antioxidative enzymes in the roots and leaves were different between the two poplar species. Notably, the differences in concentrations of nutrient elements, organic acids and phytohormones were remarkable between the two poplar species. A further evaluation of the Pb tolerance-related physiological processes showed that the change of 'sulfur (S) metabolism' in the roots was greater, and that of 'organic acid accumulation' in the roots and 'phytohormone regulation' in the leaves were markedly smaller in P. × canescens than those in P. nigra. These results suggest that there are differences in Pb tolerance capacities between P. × canescens and P. nigra, which is probably associated with their contrasting physiological responses to Pb stress, and that S metabolism, organic acid accumulation and phytohormone regulation are probably the key physiological processes modulating the different Pb tolerance capacities between the two poplar species.
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Affiliation(s)
- Wenguang Shi
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Xiangshan road, Haidian district, Beijing 100091, China
| | - Jing Li
- Department of Food Science and Technology, College of Light Industry and Food Engineering, Nanjing Forestry University, Longpan road, Xuanwu district, Nanjing 210037, China
| | - Donxu Kan
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Xiangshan road, Haidian district, Beijing 100091, China
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Hexing road, Xiangfang district, Harbin 150040, China
| | - Wenjian Yu
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Xiangshan road, Haidian district, Beijing 100091, China
| | - Xin Chen
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Xiangshan road, Haidian district, Beijing 100091, China
| | - Yuhong Zhang
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Xiangshan road, Haidian district, Beijing 100091, China
| | - Chaofeng Ma
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Xiangshan road, Haidian district, Beijing 100091, China
| | - Shurong Deng
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Xiangshan road, Haidian district, Beijing 100091, China
| | - Jing Zhou
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Xiangshan road, Haidian district, Beijing 100091, China
| | - Payam Fayyaz
- Forest, Range and Watershed Management Department, Agriculture and Natural Resources Faculty, Yasouj University, Daneshjoo St, Yasuj 75919-63179, Iran
| | - Zhi-Bin Luo
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of the State Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Xiangshan road, Haidian district, Beijing 100091, China
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Sun P, Chen Y, Liu J, Lu S, Guo J, Zhang Z, Zheng X. Quantitative evaluation of the synergistic effect of biochar and plants on immobilization of Pb. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 316:115200. [PMID: 35533595 DOI: 10.1016/j.jenvman.2022.115200] [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: 11/23/2021] [Revised: 04/10/2022] [Accepted: 04/26/2022] [Indexed: 06/14/2023]
Abstract
Biochar and plant cooperation in remediation of heavy metal contaminated soil is effective and important, but there still have knowledge gaps of synergistic effect between the two and the synergistic pathway has not been clarified. We prepared the Enteromorpha prolifera biochar at 400 °C and 600 °C (denoted as BC400 and BC600). The Pb fractions changes in soil and Pb toxicity in Brassica juncea were investigated by adding 30 g kg-1 biochar to soil containing 1200 mg kg-1 Pb in a pot experiment. There was a significant synergistic effect between biochar and plants on Pb immobilization in soil, according to the "E > 0" of Pb fractions in the interaction equation. Pb immobilization rates of biochar-plant treatments (BJBC4 and BJBC6) were 12.47% and 11.38% higher than biochar treatment (BC4, BC6), and 17.66% and 16.28% plant treatment (BJ). BJBC4 had a better immobilization effect than BJBC6. Biochar alleviated the phytotoxicity of Pb by increasing the antioxidant enzymes activities of plants. These results indicated two synergistic pathways: (1) The high pH and oxygen-containing functional groups of biochar could immobilize Pb through ion exchange, precipitation, or complexation. (2) Biochar enhanced the activity of the antioxidant enzyme system in plants thus improving the Pb tolerance of plants. Statistical analysis methods such as the partial least squares path modeling (PLS-PM) also confirmed the pathways. In a word, clear synergistic effects and pathways could guide the application of biochar and plants in Pb-contaminated soil.
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Affiliation(s)
- Ping Sun
- College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Youyuan Chen
- College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China; Key Laboratory of Marine Environment and Ecology, Ministry of Education of China, Ocean University of China, Qingdao, 266100, China; Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, Ocean University of China, Qingdao, 266100, China.
| | - Jiaxin Liu
- College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Shuang Lu
- College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Jiameng Guo
- College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China
| | - Zhiming Zhang
- College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China; Key Laboratory of Marine Environment and Ecology, Ministry of Education of China, Ocean University of China, Qingdao, 266100, China; Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, Ocean University of China, Qingdao, 266100, China
| | - Xilai Zheng
- College of Environmental Science and Engineering, Ocean University of China, Qingdao, 266100, China; Key Laboratory of Marine Environment and Ecology, Ministry of Education of China, Ocean University of China, Qingdao, 266100, China; Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering, Ocean University of China, Qingdao, 266100, China
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Sex-Specific Physiological Responses of Populus cathayana to Uranium Stress. FORESTS 2022. [DOI: 10.3390/f13071123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
Attention is increasingly being paid to the contamination of soil by the radioactive element uranium (U). Phytoremediation of contaminated soil by economically advantageous and environment-protective plants shows considerable potential for addressing this problem. Populus cathayana is a species with high heavy-metal tolerance, economic value, and notable potential for phytoremediation. Plant-sex-related differences can lead to differences in vegetative growth and tolerance to various stressors. As such, in this study, we designed a pot experiment to analyze the responses of male and female trees of P. cathayana to 50 mg kg−1 U stress in contaminated soil for 3 months. We studied the U uptake and distribution, photosynthesis, chlorophyll fluorescence, active oxygen species, and antioxidant enzymes of P. cathayana. The results showed that the photosynthetic activity and chlorophyll fluorescence of male and female trees were similar, and U stress mainly affected the nonstomatal factors and photosystem II during photosynthesis. Regarding the physiological and biochemical processes, male and female trees showed different defense strategies: male trees had higher peroxidase (POD), H2O2, and soluble sugars, but lower malondialdehyde (MDA), superoxide dismutase (SOD), and soluble proteins. Under U stress, the active oxygen produced by male trees could be cleared by antioxidant enzymes, preventing damage to the cell membrane. Male trees accumulated a higher U concentration in their roots than female trees, whereas the transportation of U from roots to leaves in male trees was lower than that in female trees. Therefore, our results suggested that male trees have a higher tolerance capacity and greater ability to remediate U-polluted soil than female trees. Future phytoremediation studies should consider the differences between plant sexes in the tolerance to U-contaminated land.
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Li Y, Zha Y, Wang G, Xie T, Zhao C, Yin Y, Guo H. Willow can be recommended as a strong candidate for the phytoremediation of cadmium and pyrene co-polluted soil under flooding condition. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:41081-41092. [PMID: 35083690 DOI: 10.1007/s11356-021-18228-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 12/16/2021] [Indexed: 06/14/2023]
Abstract
Soil cadmium (Cd) and pyrene (PYR) pollutions have gained worldwide attention due to their negative effects on the environment. Intermittent flooding in rain-rich areas may affect phytoremediation of Cd and PYR in soil. Therefore, a pot-culture experiment, with and without flooding, was conducted to study the effects of flooding on soil Cd and PYR phytoremediation. Concentrations of Cd, PYR, and nutrients in soils and plants, as well as plant physiological and biochemical responses, were examined. Under both flooding and non-flooding conditions, willow (Salix × aureo-pendula CL 'J1011') demonstrated a better ability to remove soil Cd and PYR. Flooding led to higher Cd accumulation in roots than that in shoots. Conversely, non-flooding resulted in higher Cd accumulation in shoots than that in roots. The maximum concentrations of Cd in shoots were 11.02 and 14.07 mg kg-1 with and without flooding, respectively. The maximum dissipation rates of PYR in soil were 47.35% and 88.61% under flooding and non-flooding conditions, respectively. In addition, flooding significantly increased the photosynthetic pigment, photosynthetic fluorescence, and chlorophyll fluorescence parameters in leaves, compared with non-flooding treatment. Flooding also increased the concentrations of Mg, Mn, P, Fe, and K in roots and shoots. This study outlines an effective insight for the phytoremediation of Cd- and PYR-contaminated soil under flooding condition.
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Affiliation(s)
- Yepu Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University (Xianlin Campus), 163 Xianlin Road, Jiangsu Province, Qixia District, Nanjing, 210023, People's Republic of China
- Joint International Research Centre for Critical Zone Science, University of Leeds and Nanjing University, Nanjing, 210023, People's Republic of China
| | - Yidi Zha
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University (Xianlin Campus), 163 Xianlin Road, Jiangsu Province, Qixia District, Nanjing, 210023, People's Republic of China
- Joint International Research Centre for Critical Zone Science, University of Leeds and Nanjing University, Nanjing, 210023, People's Republic of China
| | - Guobing Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University (Xianlin Campus), 163 Xianlin Road, Jiangsu Province, Qixia District, Nanjing, 210023, People's Republic of China
- Joint International Research Centre for Critical Zone Science, University of Leeds and Nanjing University, Nanjing, 210023, People's Republic of China
| | - Tanchun Xie
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University (Xianlin Campus), 163 Xianlin Road, Jiangsu Province, Qixia District, Nanjing, 210023, People's Republic of China
- Joint International Research Centre for Critical Zone Science, University of Leeds and Nanjing University, Nanjing, 210023, People's Republic of China
| | - Cuicui Zhao
- Key Laboratory of Western China's Environmental Systems (Ministry of Education), College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, People's Republic of China
| | - Ying Yin
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University (Xianlin Campus), 163 Xianlin Road, Jiangsu Province, Qixia District, Nanjing, 210023, People's Republic of China.
- Joint International Research Centre for Critical Zone Science, University of Leeds and Nanjing University, Nanjing, 210023, People's Republic of China.
| | - Hongyan Guo
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University (Xianlin Campus), 163 Xianlin Road, Jiangsu Province, Qixia District, Nanjing, 210023, People's Republic of China
- Joint International Research Centre for Critical Zone Science, University of Leeds and Nanjing University, Nanjing, 210023, People's Republic of China
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11
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Guidi Nissim W, Labrecque M. Field assessment of trace element phytoextraction by different Populus clones established on brownfields in southern Quebec (Canada). INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2022; 25:283-292. [PMID: 35605106 DOI: 10.1080/15226514.2022.2074964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Fast-growing hybrid poplars have been tested for their potential to remove trace elements (TE) from polluted soil in several temperate regions. Despite their potential, they have rarely been tested in countries with a cold temperate climate. The current study screened four different Populus hybrids for phytoextraction of four TEs (i.e., As, Cu, Pb, and Zn) on an abandoned brownfield site in southern Quebec (Canada). The main results showed that under the current experimental conditions, the most important traits determining the actual phytoextraction rate are Biological Concentration Factor (BCF) and TE accumulation in the aboveground biomass, rather than biomass productivity. Although the overall performance of the chosen hybrids was rather poor, the presence of poplar stands enhanced the movement of mobile contaminants in soil, which led to an increase in their concentration in the root zone. This aspect suggests possible strategies for using these plants with high transpiration rates in future phytoremediation projects, including either possible rotation with more effective TE phytoextractor plants (e.g., hyperaccumulators) that can remove high TE amounts that have migrated from the deeper soil layers following poplar plantation, or phytostabilization.
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Affiliation(s)
- Werther Guidi Nissim
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Milan, Italy
| | - Michel Labrecque
- Institut de Recherche en Biologie Végétale, Université de Montréal, Montréal, Canada
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12
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Bai DS, Yang X, Lai JL, Wang YW, Zhang Y, Luo XG. In situ restoration of soil ecological function in a coal gangue reclamation area after 10 years of elm/poplar phytoremediation. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 305:114400. [PMID: 34995941 DOI: 10.1016/j.jenvman.2021.114400] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 11/26/2021] [Accepted: 12/26/2021] [Indexed: 06/14/2023]
Abstract
The soil ecological health risks and toxic effects of coal gangue accumulation were examined after 10 years of elm/poplar phytoremediation. The changes in soil enzyme activities, ionome metabolism, and microbial community structure were analyzed at shallow (5-15 cm), intermediate (25-35 cm), and deep (45-55 cm) soil depths. Soil acid phosphatase activity in the restoration area increased significantly by 4.36-7.18 fold (p < 0.05). Soil concentrations of the metal ions Cu, Pb, Ni, Co, Bi, U, and Th were significantly reduced, as were concentrations of the non-metallic element S. The repair effect was shallow > middle > deep. The soil community structure, determined by 16S diversity results, was changed significantly in the restoration area, and the abundance of microorganisms increased at shallow soil depths. Altererythrobacter and Sphingomonas species were at the center of the microbial weight network in the restoration area. Redundancy analysis (RDA) showed that S and Na are important driving forces for the microbial community distributions at shallow soil depths. The KEGG function prediction indicated enhancement of the microbial function of the middle depth soil layers in the restoration area. Overall, phytoremediation enhanced the biotransformation of soil phosphorus in the coal gangue restoration area, reduced the soil content of several harmful metal elements, significantly changed the structure and function of the microbial community, and improved the overall soil ecological environment.
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Affiliation(s)
- Dong-Sheng Bai
- College of Environment and Resource, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Xu Yang
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Jin-Long Lai
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, China; State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
| | - Yi-Wang Wang
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Yu Zhang
- School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Xue-Gang Luo
- College of Environment and Resource, Southwest University of Science and Technology, Mianyang, 621010, China; School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, 621010, China.
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13
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Mohsin M, Salam MMA, Nawrot N, Kaipiainen E, Lane DJ, Wojciechowska E, Kinnunen N, Heimonen M, Tervahauta A, Peräniemi S, Sippula O, Pappinen A, Kuittinen S. Phytoextraction and recovery of rare earth elements using willow (Salix spp.). THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 809:152209. [PMID: 34883169 DOI: 10.1016/j.scitotenv.2021.152209] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 11/30/2021] [Accepted: 12/02/2021] [Indexed: 06/13/2023]
Abstract
Soil and water contaminations are caused by rare earth elements (REEs) due to mining and industrial activities, that threaten the ecosystem and human health. Therefore, phytoremediation methods need to be developed to overcome this problem. To date, little research has been conducted concerning the phytoremediation potential of Salix for REEs. In this study, two Salix species (Salix myrsinifolia and Salix schwerinii) and two Salix cultivars (Klara and Karin) were hydroponically exposed to different concentrations of six-REE for 4 weeks. The treatments were: T1 (Control: tap water), T2 (La: 50 mg/L) and T3 (La 11.50 + Y 11 + Nd 10.50 + Dy 10 + Ce 12 and Tb 11.50 in mg L-1). The effects of the REE on Salix growth indicators (height, biomass, shoot diameter and root length), concentrations of REE in the produced biomass, and accumulation of REE in different parts of the Salix (stem, root, and leaf) tissues, were determined. In addition, the retention of REE in ashes following Salix combustion (800 and 1000 °C) was determined. The result indicates that with La and REE exposure, the height growth, dry biomass, shoot diameter and root length of all Salix remained equivalent to the control treatment excluding Klara, which displayed relatively higher growth in all parameters. Further, among the REE studied, the highest La concentration (8404 μg g-1 DW) and La accumulation (10,548 μg plant-1) were observed in Karin and Klara root respectively. Translocations and bioconcentration factors were discovered at <1 for all Salix, which indicates their phytostabilization potential. The total REE concentrations in bottom ashes varied between 7 and 8% with retention rates between 85 and 89%. This study demonstrates that Salix are suitable candidates for REE phytostabilization and the remediation of wastewater sites to limit metals percolating to the water layers in the ecosystem.
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Affiliation(s)
- Muhammad Mohsin
- School of Forest Sciences, University of Eastern Finland, Yliopistokatu 7, P.O. Box 111, 80100 Joensuu, Finland
| | - Mir Md Abdus Salam
- School of Forest Sciences, University of Eastern Finland, Yliopistokatu 7, P.O. Box 111, 80100 Joensuu, Finland
| | - Nicole Nawrot
- Gdansk University of Technology, Faculty of Civil and Environmental Engineering, Narutowicza 11/12, 80-233 Gdansk, Poland
| | - Erik Kaipiainen
- School of Forest Sciences, University of Eastern Finland, Yliopistokatu 7, P.O. Box 111, 80100 Joensuu, Finland
| | - Daniel J Lane
- Department of Environmental and Life Sciences, University of Eastern Finland, Yliopistonranta 1E, P.O. Box 1627, 70211 Kuopio, Finland; Mineral Resources, Commonwealth Scientific and Industrial Research Organization (CSIRO), Queensland Centre for Advanced Technologies (QCAT), 1 Technology Court, Pullenvale, QLD 4069, PO Box 883, Kenmore, Australia
| | - Ewa Wojciechowska
- Gdansk University of Technology, Faculty of Civil and Environmental Engineering, Narutowicza 11/12, 80-233 Gdansk, Poland
| | - Niko Kinnunen
- Department of Chemistry, University of Eastern Finland, P.O. Box 111, 80101 Joensuu, Finland
| | - Mikko Heimonen
- Department of Environmental and Life Sciences, University of Eastern Finland, Yliopistonranta 1E, P.O. Box 1627, 70211 Kuopio, Finland
| | - Arja Tervahauta
- Department of Environmental and Life Sciences, University of Eastern Finland, Yliopistonranta 1E, P.O. Box 1627, 70211 Kuopio, Finland
| | - Sirpa Peräniemi
- School of Pharmacy, Biocenter Kuopio, University of Eastern Finland, P.O. Box 1627, FIN-70211 Kuopio, Finland
| | - Olli Sippula
- Department of Environmental and Life Sciences, University of Eastern Finland, Yliopistonranta 1E, P.O. Box 1627, 70211 Kuopio, Finland; Department of Chemistry, University of Eastern Finland, P.O. Box 111, 80101 Joensuu, Finland
| | - Ari Pappinen
- School of Forest Sciences, University of Eastern Finland, Yliopistokatu 7, P.O. Box 111, 80100 Joensuu, Finland
| | - Suvi Kuittinen
- School of Forest Sciences, University of Eastern Finland, Yliopistokatu 7, P.O. Box 111, 80100 Joensuu, Finland.
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Zhang G, Yu Z, Zhang L, Yao B, Luo X, Xiao M, Wen D. Physiological and proteomic analyses reveal the effects of exogenous nitrogen in diminishing Cd detoxification in Acacia auriculiformis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 229:113057. [PMID: 34883325 DOI: 10.1016/j.ecoenv.2021.113057] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 11/03/2021] [Accepted: 12/01/2021] [Indexed: 06/13/2023]
Abstract
Cadmium (Cd) has toxic effects on plants. Nitrogen (N), an essential element, is critical for plant growth, development and stress response. However, their combined effects on woody plants, especially in N-fixing tree species is still poorly understood. Our previous study revealed that the fast-growing Acacia auriculiformis showed strong Cd tolerance but the underlying mechanisms was not clear, which constrained its use in mine land reclamation. Herein, we investigated the physiological and proteomic changes in A. auriculiformis leaves to reveal the mechanisms of Cd tolerance and toxicity without N fertilizer (treatment Cd) and with excess N fertilizer (treatment CdN). Results showed that Cd tolerance in A. auriculiformis was closely associated with the coordinated gas exchange and antioxidant defense reactions under Cd treatment alone. Exogenous excessive N, however, inhibited plant growth, increased Cd concentrations, and weaken photosynthetic performance, thus, aggregated the toxicity under Cd stress. Furthermore, the aggregated Cd toxicity was attributed to the depression in the abundance of proteins, as well as their corresponding genes, involved in photosynthesis, energy metabolism (oxidative phosphorylation, carbon metabolism, etc.), defense and stress response (antioxidants, flavonoids, etc.), plant hormone signal transduction (MAPK, STN, etc.), and ABC transporters. Collectively, this study unveils a previously unknown physiological and proteomic network that explains N diminishes Cd detoxification in A. auriculiformis. It may be counterproductive to apply N fertilizer to fast-growing, N-fixing trees planted for phytoremediation of Cd-contaminated soils.
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Affiliation(s)
- Guihua Zhang
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, PR China
| | - Zhenming Yu
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, PR China
| | - Lingling Zhang
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, PR China.
| | - Bo Yao
- School of Geography and Environment, Jiangxi Normal University, Nanchang 330022, PR China
| | - Xianzhen Luo
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, PR China
| | - Meijuan Xiao
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, PR China
| | - Dazhi Wen
- Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, PR China.
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15
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Shen CC, Chen MX, Xiao T, Zhang C, Shang J, Zhang KL, Zhu FY. Global proteome response to Pb(II) toxicity in poplar using SWATH-MS-based quantitative proteomics investigation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 220:112410. [PMID: 34126303 DOI: 10.1016/j.ecoenv.2021.112410] [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: 04/01/2021] [Revised: 06/03/2021] [Accepted: 06/04/2021] [Indexed: 05/07/2023]
Abstract
Lead (Pb) toxicity is a growing serious environmental pollution that threatens human health and crop productivity. Poplar, as an important economic and ecological forest species, has the characteristics of fasting growth and accumulating heavy metals, which is a powerful model plant for phytoremediation. Here, a novel label-free quantitative proteomic platform of SWATH-MS was applied to detect proteome changes in poplar seedling roots following Pb treatment. In total 4388 unique proteins were identified and quantified, among which 542 proteins showed significant abundance changes upon Pb(II) exposure. Functional categorizations revealed that differentially expressed proteins (DEPs) primarily distributed in specialized biological processes. Particularly, lignin and flavonoid biosynthesis pathway were strongly activated upon Pb exposure, implicating their potential roles for Pb detoxification in poplar. Furthermore, hemicellulose and pectin related cell wall proteins exhibited increased abundances, where may function as a sequestration reservoir to reduce Pb toxicity in cytoplasm. Simultaneously, up-regulation of glutathione metabolism may serve as a protective role for Pb-induced oxidative damages in poplar. Further correlation investigation revealed an extra layer of post-transcriptional regulation during Pb response in poplar. Overall, our work represents multiply potential regulators in mediating Pb tolerance in poplar, providing molecular targets and strategies for phytoremediation.
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Affiliation(s)
- Cong-Cong Shen
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
| | - Mo-Xian Chen
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
| | - Tian Xiao
- Department of Cell Biology and Genetics, School of Medicine, Shenzhen University, Shenzhen, Guangdong, China
| | - Cheng Zhang
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China; International Cultivar Registration Center for Osmanthus, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Jun Shang
- SpecAlly Life Technology Co., Ltd and Wuhan Institute of Biotechnology, Wuhan, China
| | - Kai-Lu Zhang
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China
| | - Fu-Yuan Zhu
- Co-Innovation Center for Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing, China; International Cultivar Registration Center for Osmanthus, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China.
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16
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Jakovljević T, Lovreškov L, Jelić G, Anav A, Popa I, Fornasier MF, Proietti C, Limić I, Butorac L, Vitale M, De Marco A. Impact of ground-level ozone on Mediterranean forest ecosystems health. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 783:147063. [PMID: 34088128 DOI: 10.1016/j.scitotenv.2021.147063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 04/02/2021] [Accepted: 04/02/2021] [Indexed: 06/12/2023]
Abstract
Given the high ozone concentrations observed in the Mediterranean region during summer, it is crucial to extend our knowledge on the potential ozone impacts on forest health with in situ studies, especially to protect typical endemic forests of the Mediterranean basin. This study is focused on ozone measurements and exposures over the Eastern Adriatic coast and on the calculation of different O3 metrics, i.e., accumulated exposure AOT40 (AOT40dir, AOT40ICP, AOT40pheno) and stomatal O3 fluxes with an hourly threshold of uptake (Y) to represent the detoxification capacity of trees (PODY, with Y = 0, 1, 2 nmol O3 m-2 s-1) used for forest protection. Finally, we provide an assessment of the relationships between the forest response indicators and environmental variables. Passive ozone measurements and monitoring of forest health indicators, namely growth and crown defoliation, were performed for Quercus ilex, Quercus pubescens, Pinus halepensis, and Pinus nigra forests. Results showed that, for all the analysed species, ozone levels were close to reached the upper plausibility limits for passive monitoring of air quality at forest sites (100 ppb), with the highest values found on P. halepensis in the summer period. O3 metrics based on exposure were found to be higher in pine plots than in oak plots, while the highest values of uptake-based metrics were found on P. nigra. Regarding relationships between environmental variables and forest-health response indicators, the crown defoliation was significantly correlated with the soil water content at various depth while the tree growth was correlated with the different O3 metrics. The most important predictors affecting tree growth of Q. pubescens and Q. ilex were AOT40pheno and AOT40dir and POD0 for P. nigra.
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Affiliation(s)
- Tamara Jakovljević
- Croatian Forest Research Institute, Cvjetno naselje 41, 10450 Jastrebarsko, Croatia.
| | - Lucija Lovreškov
- Croatian Forest Research Institute, Cvjetno naselje 41, 10450 Jastrebarsko, Croatia.
| | - Goran Jelić
- Institute for Adriatic Crops and Karst Reclamation, Put Duilova 11, 21000 Split, Croatia.
| | - Alessandro Anav
- Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), CR Casaccia, Viale Anguillarese 301, 00123 Rome, Italy.
| | - Ionel Popa
- National Institute for Research and Development in Forestry "Marin Drăcea", Calea Bucovinei 73 bis, Campulung Moldovenesc, Romania; Centre of Mountain Economy - CE-MONT, Vatra Dornei, Romania
| | - Maria Francesca Fornasier
- Italian National Institute for Environmental Protection and Research (ISPRA), Via Vitaliano Brancati 48, 00144 Rome, Italy
| | - Chiara Proietti
- Italian National Institute for Environmental Protection and Research (ISPRA), Via Vitaliano Brancati 48, 00144 Rome, Italy.
| | - Ivan Limić
- Institute for Adriatic Crops and Karst Reclamation, Put Duilova 11, 21000 Split, Croatia.
| | - Lukrecija Butorac
- Institute for Adriatic Crops and Karst Reclamation, Put Duilova 11, 21000 Split, Croatia.
| | - Marcello Vitale
- Sapienza University of Rome, Department of Environmental Biology, Piazzale Aldo Moro 5, 00185 Rome, Italy.
| | - Alessandra De Marco
- Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), CR Casaccia, Viale Anguillarese 301, 00123 Rome, Italy.
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Rodrigues LA, Cardeira M, Leonardo IC, Gaspar FB, Radojčić Redovniković I, Duarte ARC, Paiva A, Matias AA. Deep eutectic systems from betaine and polyols – Physicochemical and toxicological properties. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116201] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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18
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Lebrun M, Bourgerie S, Morabito D. The Potential of Clover Green Amendment, Associated with Biochar, Activated Carbon or Ochre, for the Phytoremediation, Using Populus x. canescens, of a Former Mine Technosol. PLANTS 2021; 10:plants10071374. [PMID: 34371576 PMCID: PMC8309311 DOI: 10.3390/plants10071374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 06/28/2021] [Accepted: 06/29/2021] [Indexed: 11/16/2022]
Abstract
Metal(loid) soil pollution resulting from past and present mine activities is a serious environmental and health issues worldwide. Therefore, the remediation of those polluted areas has been a growing research interest over the last decades, especially the assisted phytoremediation. In this study, a pot experiment was set up, using a former mine technosol, highly polluted by As and Pb, to which biochar, activated carbon, or ochre was applied, alone or in combination to clover green amendment. Following amendment application, Populus x. canescens cuttings were planted. Results showed that all four amendments reduced soil acidity. However only the first three amendments immobilized As and Pb, while the green amendment drastically mobilized those two pollutants and none of the amendments improved plant growth. In conclusion, the association of clover green amendment to biochar, activated carbon, or ochre did not appear as an efficient remediation strategy in this case; although the aging of the amendments and degradation of the green amendment in the soil with time could have positive outcomes.
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Conesa HM, Párraga-Aguado I. Effects of a soil organic amendment on metal allocation of trees for the phytomanagement of mining-impacted soils. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2021; 43:1355-1366. [PMID: 31768836 DOI: 10.1007/s10653-019-00479-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 11/14/2019] [Indexed: 06/10/2023]
Abstract
The suitable application of phytomanagement by phytostabilisation using plant tree species in metal-polluted soils requires an assessment of the fate of metals in biological tree compartments. The goal of this work was to evaluate the effect of an urban compost amendment on metal allocation in two evergreen tree species (Pinus halepensis and Tetraclinis articulata) growing in a metal-enriched polluted substrate. A comprehensive characterisation of edaphic parameters and metal speciation was carried out. Plant analyses included metal concentrations in different tree compartments: roots, stems, branches and leaves. The amendment caused a significant increase in plant biomass for both trees, although T. articulata produced 2.5 times more biomass than P. halepensis. The amendment alleviated P deficiency in P. halepensis. This did not occur for the N deficiency detected in T. articulata. The latter showed no effect of the amendment in the allocation of metals, being most of them restricted at the root compartment (> 50%). For P. halepensis, similar behaviour occurred for Cu, Pb and Zn. However, for Cd, the amendment caused its redistribution into pine shoots, probably due to its transport associated with the increased transpiration. Results indicated that T. articulata may be a promising tree species to be used in phytomanagement programs under semiarid climates due to its low metal translocation into shoots and remarkable biomass production under amendment conditions.
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Affiliation(s)
- Héctor M Conesa
- Departamento de Ingeniería Agronómica, Escuela Técnica Superior de Ingeniería Agronómica, Universidad Politécnica de Cartagena, Paseo Alfonso XIII, 48, 30203, Cartagena, Spain.
| | - Isabel Párraga-Aguado
- Departamento de Ingeniería Agronómica, Escuela Técnica Superior de Ingeniería Agronómica, Universidad Politécnica de Cartagena, Paseo Alfonso XIII, 48, 30203, Cartagena, Spain
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Haroon M, Al-Saadi AA, Iqbal MA. Comparative Exposure Assessment of Potential Health Risks through the Consumption of Vegetables Irrigated by Freshwater/Wastewater: Gujranwala, Pakistan. Chem Res Toxicol 2021; 34:1417-1429. [PMID: 33769796 DOI: 10.1021/acs.chemrestox.0c00277] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The motive of this study is the rapid increase of industrial and domestic wastewater application for the growth of agricultural crops, which is closely associated with human health. In this study, the accumulation of eight heavy metals (Zn, Cu, Fe, Mn, Pb, Cr, Ni, and Cd) in the edible parts of five different species of common vegetables-cauliflower, bitter gourd, radish, pumpkin, and apple gourd-irrigated by two different water irrigation sources (wastewater/freshwater) grown in Pakistan's industrial and agricultural city Gujranwala and human health risks associated with the consumption of vegetables were evaluated. The mean concentration of each metal (Zn, Cu, Fe, Mn, Pb, Cr, Ni, and Cd) in five selected freshwater irrigated vegetables was observed as 48.91, 38.47, 133, 87.5, 4.62, 0.92, 1.46, and 0.36 mg/kg, respectively, while the mean concentration of each corresponding metal in wastewater irrigated vegetables was found to be 59.2, 49.5, 188, 90.9, 6.08, 2.66, 3.98, and 1.76 mg/kg, respectively. The estimated daily intake of metals (EDI), target health quotient (THQ), hazard index (HI), and target cancer risk (TCR) were computed to assess the impact of a raised level of metals in vegetables on human health. The grand THQ (G-THQ) values of individual freshwater irrigated vegetables were lower than the G-THQ values of individual wastewater irrigated vegetables and the G-THQ values of Cu, Cr, Pb, and Cd were found to be greater than the safety limit in wastewater irrigated vegetables. The HI values were found to be 7.94 and 4.01 for the vegetables irrigated with wastewater and freshwater, respectively. The TCR data reveal adverse carcinogenic risks induced by Ni, Cr, and Cd through the consumption of wastewater irrigated vegetables and Ni and Cd from the consumption of freshwater fed vegetables. The principal component analysis (PCA) to predict the sources of metals and Monte Carlo simulation were conducted to reduce the uncertainty in the data. The results indicate that higher significant health risks (carcinogenic and non-carcinogenic) would be posed to the adult population through the consumption of wastewater irrigated vegetables comparatively.
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Affiliation(s)
- Muhammad Haroon
- Department of Chemistry, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia.,Department of Chemistry, Minhaj University Lahore, Lahore, Punjab 54770, Pakistan
| | - Abdulaziz A Al-Saadi
- Department of Chemistry, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia
| | - Muhammad Adnan Iqbal
- Department of Chemistry, University of Agriculture Faisalabad, Faisalabad, Punjab 38000, Pakistan
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Li Y, Xie T, Zha Y, Du W, Yin Y, Guo H. Urea-enhanced phytoremediation of cadmium with willow in pyrene and cadmium contaminated soil. JOURNAL OF HAZARDOUS MATERIALS 2021; 405:124257. [PMID: 33127193 DOI: 10.1016/j.jhazmat.2020.124257] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 10/08/2020] [Accepted: 10/09/2020] [Indexed: 06/11/2023]
Abstract
The phytoremediation of cadmium (Cd) and pyrene (PYR) in agricultural soil with willow was investigated by carrying out a pot-culture experiment in a greenhouse. The soil was incubated with urea 60 days before it was used for this experiment. The concentrations of Cd and PYR in soil and willow, the bioconcentration and transfer factors, the physiological and biochemical responses, and plant biomass production were determined at the end of the experiment. The phytoremediation with willow based on urea application was effective for enhancing the phytoremediation of Cd and PYR contaminated soil. Urea application did not affect the available Cd but increased the accumulation of soil Cd and the plant biomass of different parts of the willow. The removal rate (77.1-89.5%) of PYR in soil was not significantly affected although urea application decreased the accumulation of PYR in willow root and bark. Urea application significantly promoted the uptake of chlorophyll, carotenoid and malondialdehyde by willow leaves. The results of this study will provide scientific information for the effective phytoremediation of Cd in Cd and PYR contaminated soil.
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Affiliation(s)
- Yepu Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Tanchun Xie
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Yidi Zha
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Wenchao Du
- School of Environment, Nanjing Normal University, Nanjing 210023, China
| | - Ying Yin
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China.
| | - Hongyan Guo
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
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Quan M, Liu X, Xiao L, Chen P, Song F, Lu W, Song Y, Zhang D. Transcriptome analysis and association mapping reveal the genetic regulatory network response to cadmium stress in Populus tomentosa. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:576-591. [PMID: 32937662 DOI: 10.1093/jxb/eraa434] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Accepted: 09/12/2020] [Indexed: 06/11/2023]
Abstract
Long non-coding RNAs (lncRNAs) play essential roles in plant abiotic stress responses, but the response of lncRNA-mediated genetic networks to cadmium (Cd) treatment remain elusive in trees, the promising candidates for phytoremediation of Cd contamination. We identified 172 Cd-responsive lncRNAs and 295 differentially expressed target genes in the leaves of Cd-treated Populus tomentosa. Functional annotation revealed that these lncRNAs were involved in various processes, including photosynthesis, hormone regulation, and phenylalanine metabolism. Association studies identified 78 significant associations, representing 14 Cd-responsive lncRNAs and 28 target genes for photosynthetic and leaf physiological traits. Epistasis uncovered 83 pairwise interactions among these traits, revealing Cd-responsive lncRNA-mediated genetic networks for photosynthesis and leaf physiology in P. tomentosa. We focused on the roles of two Cd-responsive lncRNA-gene pairs, MSTRG.22608.1-PtoMYB73 and MSTRG.5634.1-PtoMYB27, in Cd tolerance of Populus, and detected insertions/deletions within lncRNAs as polymorphisms driving target gene expression. Genotype analysis of lncRNAs and heterologous overexpression of PtoMYB73 and PtoMYB27 in Arabidopsis indicated their effects on enhancing Cd tolerance, photosynthetic rate, and leaf growth, and the potential interaction mechanisms of PtoMYB73 with abiotic stresses. Our study identifies the genetic basis for the response of Populus to Cd treatment, facilitating genetic improvement of Cd tolerance in trees.
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Affiliation(s)
- Mingyang Quan
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Xin Liu
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Liang Xiao
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Panfei Chen
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Fangyuan Song
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Wenjie Lu
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Yuepeng Song
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Deqiang Zhang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
- Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, Ministry of Education, College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
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Zhang X, Wu H, Ma Y, Meng Y, Ren D, Zhang S. Intrinsic soil property effects on Cd phytotoxicity to Ligustrum japonicum 'Howardii' expressed as different fractions of Cd in forest soils. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 206:110949. [PMID: 32882571 DOI: 10.1016/j.ecoenv.2020.110949] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 06/23/2020] [Accepted: 06/25/2020] [Indexed: 06/11/2023]
Abstract
A better comprehensive understanding of the influence of soil/solution properties on cadmium (Cd) phytotoxicity is essential for soil Cd ecological risk assessment. The toxicity of soil spiked Cd to Ligustrum japonicum 'Howardii' seedling growth was conducted by the greenhouse pot experiments using 13 typical forest soils selected from mainland of China. The results showed that the ranges of Cd toxicity thresholds of 10% seedling growth inhibition (EC10) and 50% inhibition (EC50) followed the order: soil pore water Cd (EC10 on average 0.88 mg L-1 with the variation of 54.9 folds and EC50 on average 2.28 mg L-1 with variation of 41.8 folds), DTPA extractable Cd (EC10 on average 5.4 mg kg-1 with 20.9 folds variation and EC50 on average 17.86 mg kg-1 with 6.6 folds variation), total added Cd (EC10 on average 6.55 mg kg-1 with 16.7 folds variation and EC50 on average 22.11 mg kg-1 with 5.1 folds variation), which suggested that whatever the available Cd expressed, its toxicity is largely affected by soil properties. The empirical multiple equations were well developed between different fractions of Cd toxicity thresholds ECx (x = 10 or 50) and soil/solution. The results also showed that the pH inversely correlated with EC10 (r2 = 0.54, P < 0.01) and EC50 (r2 = 0.63, P < 0.001) based on soil pore water, indicating the ECx decreased with more toxicity as pH increased. No single significant soil solution properties were found for ECx in DTPA extractable Cd. For the ECx of DTPA extractable and total Cd, the content of aluminum oxides in soil and soil pH were the two significant factors inversely related with ECx, which explained 68%-79% of the inter-soil variation, respectively. Overall, soil or solution pH was the most important factor controlling Cd toxicity thresholds. Meanwhile, significant negative correlations existed between the soil solution pH and the slopes of parameter (b) of the dose-response curves for different fractions of Cd, implying that the growth of toxic effect enhanced as unit Cd dosage increased in low pH soils. These results will be helpful to evaluate the metal ecological risk in forest soils.
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Affiliation(s)
- Xiaoqing Zhang
- College of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan, 430081, China; Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan, 430081, China
| | - Haoxuan Wu
- College of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan, 430081, China
| | - Yibing Ma
- Macao Environmental Research Institute, Macau University of Science and Technology, Macao, 999078, China
| | - Yu Meng
- College of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan, 430081, China
| | - Dajun Ren
- College of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan, 430081, China; Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan, 430081, China
| | - Shuqin Zhang
- College of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan, 430081, China; Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan, 430081, China.
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Hussain Z, Rasheed F, Tanvir MA, Zafar Z, Rafay M, Mohsin M, Pulkkinen P, Ruffner C. Increased antioxidative enzyme activity mediates the phytoaccumulation potential of Pb in four agroforestry tree species: a case study under municipal and industrial wastewater irrigation. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2020; 23:704-714. [PMID: 33251852 DOI: 10.1080/15226514.2020.1849016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Wastewater used as irrigation water is causing heavy metal accumulation in the agro-ecosystems. A greenhouse study was conducted to compare the phytoaccumulation ability of four agroforestry tree species under different wastewater treatments. Three-month-old potted seedlings of Morus alba, Acacia nilotica, Acacia ampliceps, and Azadirachta indica were irrigation with tap water (C), municipal wastewater (MWW), and industrial wastewater (IWW). Results showed that MWW had a positive and IWW had a negative impact on biomass production in all the species. Acacia ampliceps showed the highest increment (65%) and showed the lowest decrease (5%) in total biomass under both MWW and IWW treatment. Pb concentration was also found highest in the leaves, stem and roots of Azadirachta indica (108.5, 46.2, 180.5 mg kg-1, respectively) under IWW. Production of H2O2 was highest in IWW treatment with almost 148% increase observed in Azadirachta indica. Similarly, the production of antioxidative enzymes (Superoxide dismutase, Catalase and Peroxidase) was also highest in Azadirachta indica under IWW. Therefore, results suggest that along with high increment in total biomass, both Acacia ampliceps and Azadirachta indica showed high Pb concentration and an effective antioxidative defense mechanism and thus, can be used for planting in soils irrigated with MWW and IWW.
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Affiliation(s)
- Zafar Hussain
- Department of Forestry & Range Management, Bahauddin Zakariya University, Multan, Pakistan
| | - Fahad Rasheed
- Department of Forestry & Range Management, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Ayyoub Tanvir
- Department of Forestry & Range Management, University of Agriculture, Faisalabad, Pakistan
| | - Zikria Zafar
- Department of Forestry & Range Management, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Rafay
- Department of Forestry, Rage Management and Wildlife, The Islamia University of Bahawalpur, Bahawalpur, Pakistan
| | - Muhammad Mohsin
- School of Forest Sciences, University of Eastern Finland, Joensuu, Finland
| | - Pertti Pulkkinen
- Haapastensyrjä Research Unit, Natural Resources Institute Finland (Luke), Läyliäinen, Finland
| | - Charles Ruffner
- Department of Forestry, Southern Illinois University Carbondale, Illinois, IL, USA
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25
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Komárková M, Chromý J, Pokorná E, Soudek P, Máchová P. Physiological and Transcriptomic Response of Grey Poplar ( Populus ×canescens Aiton Sm.) to Cadmium Stress. PLANTS (BASEL, SWITZERLAND) 2020; 9:E1485. [PMID: 33158073 PMCID: PMC7694188 DOI: 10.3390/plants9111485] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 10/29/2020] [Accepted: 10/30/2020] [Indexed: 12/22/2022]
Abstract
(1) Background: Populus ×canescens (Aiton) Sm. is a fast-growing woody plant belonging to the family Salicaceae. Two poplar genotypes characterized by unique phenotypic traits (TP11 and TP20) were chosen to be characterized and tested for a physiological and transcriptomic response to Cd stress. (2) Methods: A comparative analysis of the effects of exposure to high cadmium (Cd) concentrations (10 µM and 100 µM) of TP11 and TP20 was performed. (3) Results: Neither of the tested Cd concentration negatively affected plant growth; however, the chlorophyll content significantly decreased. The potassium (K) content was higher in the shoots than in the roots. The magnesium concentrations were only slightly affected by Cd treatment. The zinc content in the shoots of TP20 was lower than that in the shoots of TP11. Cd accumulation was higher in the roots than in the shoots. After 10 days of exposure, 10 µM Cd resulted in comparable amounts of Cd in the roots and shoots of TP20. The most significant change in transcript amount was observed in endochitinase 2, 12-oxophytodienoate reductase 1 and phi classglutathione S-transferase. (4) Conclusions: Our study provided new insights for effective assessing the ability of different poplar genotypes to tolerate Cd stress and underlying Cd tolerance.
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Affiliation(s)
- Martina Komárková
- Forestry and Game Management Research Institute, Strnady, 25202 Jiloviste, Czech Republic; (J.C.); (E.P.); (P.M.)
| | - Jakub Chromý
- Forestry and Game Management Research Institute, Strnady, 25202 Jiloviste, Czech Republic; (J.C.); (E.P.); (P.M.)
| | - Eva Pokorná
- Forestry and Game Management Research Institute, Strnady, 25202 Jiloviste, Czech Republic; (J.C.); (E.P.); (P.M.)
| | - Petr Soudek
- The Czech Academy of Sciences, Institute of Experimental Botany, 16502 Prague, Czech Republic;
| | - Pavlína Máchová
- Forestry and Game Management Research Institute, Strnady, 25202 Jiloviste, Czech Republic; (J.C.); (E.P.); (P.M.)
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Wang H, Chen W, Sinumvayabo N, Li Y, Han Z, Tian J, Ma Q, Pan Z, Geng Z, Yang S, Kang M, Rahman SU, Yang G, Zhang Y. Phosphorus deficiency induces root proliferation and Cd absorption but inhibits Cd tolerance and Cd translocation in roots of Populus × euramericana. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 204:111148. [PMID: 32818843 DOI: 10.1016/j.ecoenv.2020.111148] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 08/03/2020] [Accepted: 08/07/2020] [Indexed: 06/11/2023]
Abstract
To disclose how phosphorus deficiency influence phytoremediation of Cd contamination using poplars, root architecture, Cd absorption, Cd translocation and antioxidant defense in poplar roots were investigated using a clone of Populus × euramericana. Root growth was unaltered by Cd exposure regardless of P conditions, while the degree of root proliferation upon P deficiency was changed by high level of Cd exposure. The concentration and content of Cd accumulation in roots were increased by P deficiency. This can be partially explained by the increased expression of genes encoding PM H + -ATPase under the combined conditions of P deficiency and high Cd exposure, which enhanced Cd2+-H+ exchanges and led to an increment of Cd uptake under P deficiency. Despite of the increasing Cd accumulation in roots, the translocation of Cd from roots to aerial tissues sharply decreased upon P deficiency. The relative expression of genes responsible for Cd translocation (HMA4) decreased upon P deficiency and thus inhibited Cd translocation via xylem. GR activity was decreased by P deficiency, which can inhibit the form of GSH and GSH-Cd complexes and decrease Cd translocation via GSH-Cd complexes. The transportation of PC-Cd complexes into vacuole decreased under P deficiency as a result of the low expression of PCS and ABCC1, and thus suppressed Cd tolerance and Cd detoxification in roots. Moreover, P deficiency decreased the levels of antioxidase (GR and CAT) and phytohormones including JA, ABA and GA3, which synchronously reduced antioxidant capacity in roots.
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Affiliation(s)
- Hao Wang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Wenyi Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Narcisse Sinumvayabo
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Yunfei Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Zixuan Han
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Jing Tian
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Qin Ma
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Zhenzhen Pan
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Zhaojun Geng
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Siqi Yang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Mingming Kang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Siddiq Ur Rahman
- Department of Computer Science and Bioinformatics, Khushal Khan Khattak University, Karak, Khyber Pakhtunkhwa, 27200, Pakistan
| | - Guijuan Yang
- Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China.
| | - Yi Zhang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
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Zhou C, Xiao X, Guo Z, Peng C, Zeng P, Fosua Bridget A. Physiological responses, tolerance efficiency, and phytoextraction potential of Hylotelephium spectabile (Boreau) H. Ohba under Cd stress in hydroponic condition. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2020; 23:80-88. [PMID: 32723076 DOI: 10.1080/15226514.2020.1797628] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A sand hydroponic experiment with different concentrations of 0, 5, 10, 20, 40 mg L-1 Cd was used to study the growth and physiological response of Hylotelephium spectabile (Boreau) H. Ohba. and its phytoextraction potential for Cd. The results showed that total plant biomass under 5 mg L-1 Cd treatment was slightly affected. The content of malondialdehyde (MDA) in leaf exposed to Cd was higher, and the POD and CAT activity exhibited a positive response to the low level of Cd addition (5 mg·L-1). The photosynthesis pigments were slightly inhibited, and the ultrastructure of chloroplast remained intact after treatment with 10 mg L-1 Cd. The maximum leaf Cd content (603 mg·kg-1) was found in 5 mg L-1 Cd treatment, then decreased with the Cd level increased. The maximum Cd content in the shoots far exceeds the threshold level (100 mg kg-1) for a Cd-hyperaccumulator plant with the value of translocation factor (TFshoot/root) for Cd reaching up to 5.62. In conclusion, H. spectabile showed normal growth and physiological response and high shoot Cd accumulation under 5 mg L-1 Cd stress, which made it to be a good candidate for phytoextraction of low-level Cd polluted environment.
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Affiliation(s)
- Cong Zhou
- School of Metallurgy and Environment, Central South University, Changsha, China
| | - Xiyuan Xiao
- School of Metallurgy and Environment, Central South University, Changsha, China
| | - Zhaohui Guo
- School of Metallurgy and Environment, Central South University, Changsha, China
| | - Chi Peng
- School of Metallurgy and Environment, Central South University, Changsha, China
| | - Peng Zeng
- School of Metallurgy and Environment, Central South University, Changsha, China
| | - Ataa Fosua Bridget
- School of Metallurgy and Environment, Central South University, Changsha, China
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28
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Hao L, Chen L, Zhu P, Zhang J, Zhang D, Xiao J, Xu Z, Zhang L, Liu Y, Li H, Yang H, Cao G. Sex-specific responses of Populus deltoides to interaction of cadmium and salinity in root systems. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 195:110437. [PMID: 32193020 DOI: 10.1016/j.ecoenv.2020.110437] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 03/02/2020] [Accepted: 03/03/2020] [Indexed: 06/10/2023]
Abstract
More research about branch order-specific accumulation of toxic ions in root systems is needed to know root branch-related responses in growth and physiology. In this study, we used Populus deltoides females and males as a model to detect sex-specific differences in physiology, biochemistry, ultrastructure of absorbing roots and distribution of toxic ions in heterogeneous root systems under Cd, salinity and combined stress. Healthy annual male and female plants of P. deltoides were cultivated in soils including 5 mg kg-1 of Cd, 0.2% (w/w) of NaCl and their combination for a growth season. Our results are mainly as follows: (1) females suffered more growth inhibition, root biomass decline, root viability depression, and damage to distal root cells, but lower ability to scavenge reactive oxygen species (ROS) than the males under all stresses; (2) In both sexes, salinity adopted in the present study caused more significant negative effects on growth and organelles integrity than Cd stress, while interaction treatment did not induced a further depression in growth or more impairments in root cells of both sexes in comparison to salinity, indicating influence of combined stress was not equal simply to a superposition of the effects caused by single factors; (3) Cd and Na accumulation in root systems is highly heterogeneous and branch order-specific, with lower-order roots containing more Cd2+ but less Na+, and higher-order roots accumulating more Na+ but less Cd2+. Besides, it is noteworthy that females accumulated more Cd2+ in 1-2 order roots and more Na+ in 1-3 order roots than males under the interaction treatment. These results indicated that strategies in toxic ions accumulation in heterogeneous root systems of P. deltoides was highly branch order-specific, and may closely correlate with sex-specific root growth and physiological responses to the interaction of Cd and salinity.
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Affiliation(s)
- Linting Hao
- Institute of Ecological Forestry, Sichuan Agricultural University, Chengdu, 611130, China; Forestry Ecological Engineering in the Upper Reaches of Yangtze River Key Laboratory of Sichuan Province, Chengdu, 611130, China
| | - Lianghua Chen
- Institute of Ecological Forestry, Sichuan Agricultural University, Chengdu, 611130, China; Forestry Ecological Engineering in the Upper Reaches of Yangtze River Key Laboratory of Sichuan Province, Chengdu, 611130, China.
| | - Peng Zhu
- Institute of Ecological Forestry, Sichuan Agricultural University, Chengdu, 611130, China; Forestry Ecological Engineering in the Upper Reaches of Yangtze River Key Laboratory of Sichuan Province, Chengdu, 611130, China
| | - Jian Zhang
- Institute of Ecological Forestry, Sichuan Agricultural University, Chengdu, 611130, China; Forestry Ecological Engineering in the Upper Reaches of Yangtze River Key Laboratory of Sichuan Province, Chengdu, 611130, China
| | - Danju Zhang
- Institute of Ecological Forestry, Sichuan Agricultural University, Chengdu, 611130, China; Forestry Ecological Engineering in the Upper Reaches of Yangtze River Key Laboratory of Sichuan Province, Chengdu, 611130, China
| | - Jiujin Xiao
- Institute of Ecological Forestry, Sichuan Agricultural University, Chengdu, 611130, China; Forestry Ecological Engineering in the Upper Reaches of Yangtze River Key Laboratory of Sichuan Province, Chengdu, 611130, China
| | - Zhenfeng Xu
- Institute of Ecological Forestry, Sichuan Agricultural University, Chengdu, 611130, China; Forestry Ecological Engineering in the Upper Reaches of Yangtze River Key Laboratory of Sichuan Province, Chengdu, 611130, China
| | - Li Zhang
- Institute of Ecological Forestry, Sichuan Agricultural University, Chengdu, 611130, China; Forestry Ecological Engineering in the Upper Reaches of Yangtze River Key Laboratory of Sichuan Province, Chengdu, 611130, China
| | - Yang Liu
- Institute of Ecological Forestry, Sichuan Agricultural University, Chengdu, 611130, China; Forestry Ecological Engineering in the Upper Reaches of Yangtze River Key Laboratory of Sichuan Province, Chengdu, 611130, China
| | - Han Li
- Institute of Ecological Forestry, Sichuan Agricultural University, Chengdu, 611130, China; Forestry Ecological Engineering in the Upper Reaches of Yangtze River Key Laboratory of Sichuan Province, Chengdu, 611130, China
| | - Hanbo Yang
- Institute of Ecological Forestry, Sichuan Agricultural University, Chengdu, 611130, China; Forestry Ecological Engineering in the Upper Reaches of Yangtze River Key Laboratory of Sichuan Province, Chengdu, 611130, China
| | - Guoxing Cao
- College of Forestry, Sichuan Agricultural University, Chengdu, 611130, China
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Wang X, Luo J, Lin CJ, Wang D, Yuan W. Elevated cadmium pollution since 1890s recorded by forest chronosequence in deglaciated region of Gongga, China. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 260:114082. [PMID: 32041013 DOI: 10.1016/j.envpol.2020.114082] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 01/26/2020] [Accepted: 01/26/2020] [Indexed: 06/10/2023]
Abstract
Ice and sediment cores, peat bogs and tree rings are useful proxy records for reconstructing historical air pollution events. However, these indirect measurements are subject to interferences caused by environmental perturbations including global climate change. Therefore, using multiple proxy records has advantages in constraining the analytical findings. In this study, we utilized the chronological record of atmospheric deposition preserved in vegetation succession ecosystems in the deglaciated region for reconstructing historical pollution events. The rate of Cd accumulation in the forest chronosequence zone was investigated in a deglaciated area of the Tibetan Plateau. The results obtained through this novel approach are consistent with the variations of Cd concentration recorded in tree-ring, showing a 4-7 times increase of atmospheric Cd deposition from the 1890s to the early 1970s followed by a decrease from the mid-1970s-2000s. The Cd pollution record indicates that elevated atmospheric Cd release occurred in regions of Southwest China and South Asia due to the rapid industrial development until 1970 followed by coordinated efforts in controlling air emissions after mid-1970s.
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Affiliation(s)
- Xun Wang
- College of Resources and Environment, Southwest University, Chongqing, 400715, China.
| | - Ji Luo
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences & Ministry of Water Conservancy, Chengdu, 610041, China
| | - Che-Jen Lin
- Center for Advances in Water and Air Quality, Lamar University, Beaumont, TX, USA; Department of Civil and Environmental Engineering, Lamar University, Beaumont, TX, USA
| | - Dingyong Wang
- College of Resources and Environment, Southwest University, Chongqing, 400715, China
| | - Wei Yuan
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, 550081, China
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30
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Yan X, Wang J, Song H, Peng Y, Zuo S, Gao T, Duan X, Qin D, Dong J. Evaluation of the phytoremediation potential of dominant plant species growing in a chromium salt-producing factory wasteland, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:7657-7671. [PMID: 31889268 DOI: 10.1007/s11356-019-07262-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 12/02/2019] [Indexed: 06/10/2023]
Abstract
The metal contents of the soil and plant tissues in a large chromium salt-producing factory wasteland were determined to assess the properties of soil contamination and to identify plant species accumulating a range of heavy metals. Total metal contents in the factory soils presented a high heterogeneity, and the principal contaminants were Cd and Cr. All plant species examined were metal-tolerant, but to different extents. Especially, the maximum accumulation of Cd (15.61 mg kg-1) and Cr (925.07 mg kg-1) was found in Melia azedarach L. Subsequently, the Cd and Cr bioaccumulation and diverse physiological properties of M. azedarach seedlings exposed to different concentrations of Cd(II), Cr(VI), or Cd(II) + Cr(VI) in nutrient solutions were further investigated. All treated seedlings were able to survive under heavy metal stress, and the accumulation of both metals in plant tissues increased with elevation of metal exposure strength. M. azedarach showed a BCF greater than 147.56 for Cd and 36.76 for Cr. Meanwhile, the TF was lower than 0.25 for Cd and 0.32 for Cr. The highest bioaccumulation in root tissues was 2708.03 mg kg-1 Cd and 824.65 mg kg-1 Cr for seedlings cultured with 20 mg L-1 Cd(II) or 20 mg L-1 Cr(VI). Cd and Cr increased each other's uptake in seedlings although a reduced accumulation in roots occurred when exposed to the highest concentration of Cd(II) + Cr(VI) treatment (20 mg L-1). At either level of concentration, the degree of plant growth inhibition and oxidative damage caused by heavy metals was Cd(II) + Cr(VI) > Cr(VI) > Cd(II). Superoxide dismutase and peroxidase exhibited positive and effective responses to low-Cd(II) or Cr(VI) concentration stress, but their activities decreased with increasing metal exposure strength. The behavior of the non-enzymatic antioxidants (GSH, soluble protein, and proline) in plant involved in the detoxification of ROS induced by metal exposure was correlated well with higher Cd and Cr accumulations. Here, the potentiality of M. azedarach with the capacity to accumulate and stabilize Cd/Cr in metal-contaminated soil by phytoremediation process has been explored.
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Affiliation(s)
- Xiao Yan
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, School of Life Sciences, Southwest University, Chongqing, 400715, People's Republic of China
| | - Junqi Wang
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, School of Life Sciences, Southwest University, Chongqing, 400715, People's Republic of China
| | - Hongchuan Song
- School of Energy and Environment Science, Solar Energy Research Institute, Yunnan Normal University, Kunming, 650092, People's Republic of China
| | - Yajun Peng
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, School of Life Sciences, Southwest University, Chongqing, 400715, People's Republic of China
| | - Shihao Zuo
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, School of Life Sciences, Southwest University, Chongqing, 400715, People's Republic of China
| | - Tiancong Gao
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, School of Life Sciences, Southwest University, Chongqing, 400715, People's Republic of China
| | - Xiaoxiang Duan
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, School of Life Sciences, Southwest University, Chongqing, 400715, People's Republic of China
| | - Dan Qin
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, School of Life Sciences, Southwest University, Chongqing, 400715, People's Republic of China
| | - Jinyan Dong
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, School of Life Sciences, Southwest University, Chongqing, 400715, People's Republic of China.
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31
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Yang C, Qiu W, Chen Z, Chen W, Li Y, Zhu J, Rahman SU, Han Z, Jiang Y, Yang G, Tian J, Ma Q, Zhang Y. Phosphorus influence Cd phytoextraction in Populus stems via modulating xylem development, cell wall Cd storage and antioxidant defense. CHEMOSPHERE 2020; 242:125154. [PMID: 31675575 DOI: 10.1016/j.chemosphere.2019.125154] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 10/12/2019] [Accepted: 10/19/2019] [Indexed: 05/23/2023]
Abstract
The soils in mining lands with cadmium (Cd) contamination usually are deficient in nutrients. Disclosing how P nutrition and N:P stoichiometric ratio influences Cd accumulation and stress tolerance in stems of Populus spp. will facilitate the phytoremediation of mining sites polluted by Cd. In this study, investigations at the anatomical and physiological levels were conducted using a clone of Populus × euramericana. Both phosphorus deficiency and cadmium exposure inhibited xylem development via reducing cell layers in the xylem. Under P-sufficient condition, appropriate P status and balanced N:P ratio in stem promoted xylem development under Cd exposure via stimulating cell division, which enhanced Cd accumulation in stems. Cd accumulation in cell walls of collenchyma tissues of the stem was enhanced by P application due to increased polysaccharide production and cell wall affinity for Cd. The low P concentrations (0.3-0.4 mg g-1) and imbalanced N:P ratio under P deficiency inhibited the production of APX and ascorbate-GSH cycle, which increased oxidative stress and lipid peroxidation as indicated by high MDA concentration in stem. Under P-sufficient condition, the interactions between phytohormones and antioxidants play crucial roles in the process of antioxidant defense under Cd exposure. In conclusions, appropriate P addition and balanced N:P ratio enhanced secondary xylem development and promoted cadmium accumulation and stress tolerance in Populus stems, which can benefit the phytoextraction of Cd from Cd-contaminated soil.
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Affiliation(s)
- Can Yang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Wenwen Qiu
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Zexin Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Wenyi Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Yunfei Li
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Jingle Zhu
- Paulownia R&D Center of State Administration of Forestry and Grassland, Zhengzhou, Henan, 450003, China
| | - Siddiq Ur Rahman
- Department of Computer Science and Bioinformatics, Khushal Khan Khattak University, Karak, Khyber Pakhtunkhwa, 27200, Pakistan
| | - Zixuan Han
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Yun Jiang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Guijuan Yang
- Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, 100091, China
| | - Jing Tian
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Qin Ma
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China
| | - Yi Zhang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, PR China.
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32
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Zeng P, Guo Z, Xiao X, Peng C, Liu L, Yan D, He Y. Physiological stress responses, mineral element uptake and phytoremediation potential of Morus alba L. in cadmium-contaminated soil. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 189:109973. [PMID: 31761549 DOI: 10.1016/j.ecoenv.2019.109973] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 11/10/2019] [Accepted: 11/13/2019] [Indexed: 06/10/2023]
Abstract
Fast growing woody plants are proposed for potential application for phytoremediation of contaminated soil. In this study, the plant growth, physiological responses, mineral element uptake, and phytoremediation potential of the woody plant Morus alba L. were studied in different levels of Cd-contaminated soil through dynamic sampling (30, 60, 120, and 180 d). The results indicated that M. alba L. had strong physiological coordination, tolerance and detoxification capacity in response to Cd in contaminated soil. Compared with the control, the photosynthetic pigment content in M. alba L. leaves was significantly suppressed during initial cultivation (30-60 d) and the malonaldehyde (MDA) content and electrolyte leakage (EL) were increased from 30 to 120 d of cultivation. Furthermore, the uptake of Cu, Mn, and Zn in plant tissues was imbalanced throughout cultivation (30-180 d) under 55 mg·kg-1 Cd stress. However, the chlorophyll a, chlorophyll b, carotenoid, soluble protein, and soluble sugar contents and the peroxidase (POD) and ascorbate peroxidase (APX) activities in plant leaves, as well as the uptake of macronutrients (K, Ca, and Mg) in plant stems and leaves were maintained at normal levels. Furthermore, the catalase (CAT) activities in plant leaves and the Ca and Mg contents in plant roots were significantly (p < 0.05) enhanced in response to Cd stress after 180 d of cultivation. Furthermore, the biomass of M. alba L. was significantly increased with cultivation time in Cd-contaminated soil. Therefore, normal photosynthesis, antioxidant protection, and macronutrient regulation contribute to M. alba L. with high tolerance to Cd. Moreover, the uptake and total extraction amount of Cd in aboveground M. alba L. were significantly (p < 0.05) increased with both the plant growth period and soil Cd level, and the maximum amount of Cd reached up to 340.5 μg·plant-1. Thus, M. alba L. can be regarded as a potential candidate for phytoremediation in Cd-contaminated sites.
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Affiliation(s)
- Peng Zeng
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China.
| | - Zhaohui Guo
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China.
| | - Xiyuan Xiao
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China.
| | - Chi Peng
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China.
| | - Lingqing Liu
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Demei Yan
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China
| | - Yalei He
- Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha, 410083, China
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33
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Su W, Bao Y, Lu Y, He F, Wang S, Wang D, Yu X, Yin W, Xia X, Liu C. Poplar Autophagy Receptor NBR1 Enhances Salt Stress Tolerance by Regulating Selective Autophagy and Antioxidant System. FRONTIERS IN PLANT SCIENCE 2020; 11:568411. [PMID: 33552091 PMCID: PMC7854912 DOI: 10.3389/fpls.2020.568411] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 12/18/2020] [Indexed: 05/10/2023]
Abstract
Salt stress is an adverse environmental factor for plant growth and development. Under salt stress, plants can activate the selective autophagy pathway to alleviate stress. However, the regulatory mechanism of selective autophagy in response to salt stress remains largely unclear. Here, we report that the selective autophagy receptor PagNBR1 (neighbor of BRCA1) is induced by salt stress in Populus. Overexpression of PagNBR1 in poplar enhanced salt stress tolerance. Compared with wild type (WT) plants, the transgenic lines exhibited higher antioxidant enzyme activity, less reactive oxygen species (ROS), and higher net photosynthesis rates under salt stress. Furthermore, co-localization and yeast two-hybrid analysis revealed that PagNBR1 was localized in the autophagosome and could interact with ATG8 (autophagy-related gene). PagNBR1 transgenic poplars formed more autophagosomes and exhibited higher expression of ATG8, resulting in less accumulation of insoluble protein and insoluble ubiquitinated protein compared to WT under salt stress. The accumulation of insoluble protein and insoluble ubiquitinated protein was similar under the treatment of ConA in WT and transgenic lines. In summary, our results imply that PagNBR1 is an important selective autophagy receptor in poplar and confers salt tolerance by accelerating antioxidant system activity and autophagy activity. Moreover, the NBR1 gene is an important potential molecular target for improving stress resistance in trees.
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Affiliation(s)
- Wanlong Su
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
- National Engineering Laboratory for Tree Breeding, Beijing Forestry University, Beijing, China
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Yu Bao
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
- National Engineering Laboratory for Tree Breeding, Beijing Forestry University, Beijing, China
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Yingying Lu
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
- National Engineering Laboratory for Tree Breeding, Beijing Forestry University, Beijing, China
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Fang He
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
- National Engineering Laboratory for Tree Breeding, Beijing Forestry University, Beijing, China
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Shu Wang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
- National Engineering Laboratory for Tree Breeding, Beijing Forestry University, Beijing, China
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Dongli Wang
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
- National Engineering Laboratory for Tree Breeding, Beijing Forestry University, Beijing, China
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Xiaoqian Yu
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
- National Engineering Laboratory for Tree Breeding, Beijing Forestry University, Beijing, China
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Weilun Yin
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
- National Engineering Laboratory for Tree Breeding, Beijing Forestry University, Beijing, China
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Xinli Xia
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
- National Engineering Laboratory for Tree Breeding, Beijing Forestry University, Beijing, China
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
| | - Chao Liu
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, China
- National Engineering Laboratory for Tree Breeding, Beijing Forestry University, Beijing, China
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing, China
- *Correspondence: Chao Liu,
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34
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Zhang S, Yang C, Chen M, Chen J, Pan Y, Chen Y, Rahman SU, Fan J, Zhang Y. Influence of nitrogen availability on Cd accumulation and acclimation strategy of Populus leaves under Cd exposure. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 180:439-448. [PMID: 31117015 DOI: 10.1016/j.ecoenv.2019.05.031] [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: 01/15/2019] [Revised: 04/08/2019] [Accepted: 05/11/2019] [Indexed: 06/09/2023]
Abstract
Nitrogen (N) plays crucial roles in chlorophyll concentration, photosynthesis, and stress tolerance of plant leaves. This study conducted a greenhouse experiment combined with Cd and N treatments to elucidate the mechanism underlying the influence of N on Cd accumulation and acclimation strategy in Populus leaves. Chlorophyll concentration and net photosynthetic rates (A) in leaves were unaltered by Cd exposure regardless of N condition. Nitrogen availability alter acclimation strategy of poplar leaves under cadmium exposure. Under sufficient N, Cd accumulation in leaves was elevated with increased intensity and duration of Cd exposure; Cd accumulation reached ca. 28 μg g-1 dry weight and 260 μg plant-1 after 60 days of exposure to high level of Cd (20 mg Cd kg-1 soil), and this finding indicates a large potential for Cd phytoextraction. Poplar leaves exhibited high capacity for antioxidant defense and stress tolerance and avoided oxidative damage under high Cd exposure. The levels of phytohormones and antioxidants in leaves and the relative expressions of critical genes encoding antioxidant enzymes were up-regulated under sufficient N condition. Nitrogen deficiency decreased chlorophyll concentration and net photosynthetic rates (A) and interfered with the production of N metabolites, resulting in a low level of phytohormones and antioxidants that are responsible for stress tolerance. The low levels of Cd accumulation in leaves may be a self-protecting strategy to prevent severe oxidative damage due to the decreased capacities for stress tolerance under N deficiency.
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Affiliation(s)
- Senmao Zhang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Can Yang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Mengmeng Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Juan Chen
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yuehan Pan
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yinglong Chen
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi, 712100, China; The UWA Institute of Agriculture, School of Agriculture and Environment, The University of Western Australia, Perth, WA, 6001, Australia
| | - Siddiq Ur Rahman
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Junfeng Fan
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Yi Zhang
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Forestry, Northwest A&F University, Yangling, Shaanxi, 712100, China.
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35
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Xu X, Yang B, Qin G, Wang H, Zhu Y, Zhang K, Yang H. Growth, accumulation, and antioxidative responses of two Salix genotypes exposed to cadmium and lead in hydroponic culture. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:19770-19784. [PMID: 31090001 DOI: 10.1007/s11356-019-05331-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 04/30/2019] [Indexed: 06/09/2023]
Abstract
Cd and Pb are a toxic environmental pollutant, and their elevated concentrations in the waters and soils could exert detriment effects on human health by food chain. In order to evaluate the capacity to heavy metal accumulation and the physiochemical responses of two Salix genotypes, a 35-day hydroponic seedling experiment was implemented with Salix matsudana Koidz. 'Shidi1' (A42) and Salix psammophila C. 'Huangpi1' (A94) under different concentrations of Cd (15 and 30 μM) or Pb (250 and 300 μM). The results showed that the biomass of A94 severely reduced more than that of A42. The accumulation ability of Cd in different plant organs followed the sequence of leaves > roots > stems. Pb primarily accumulated in the roots for both Salix genotypes (54.27 mg g-1 for A42 and 54.52 mg g-1 for A94). Translocation factors based on accumulation (TF') for Cd were more than 8.0, while TF's for Pb were less than 1.0 in both A42 and A94, implying they could be applied in the phytoremediation of Cd-contaminated sites due to their stronger ability to Cd phytoextraction. The stress of Cd or Pb significantly increased malondialdehyde (MDA) contents and increased photosynthetic rates in leaves of two Salix genotypes. Transpiration rates of willow were positively correlated with its Cd translocation. Both catalase (CAT) and peroxidase (POD) activities were suppressed, while the superoxide dismutase (SOD) was boosted with increasing Cd and Pb levels in the leaves and roots of the two willow genotypes, suggesting SOD plays an important role in the removal of ROS. The inconsistency of the changes in enzyme activity suggests that the integrated antioxidative mechanisms regulate the tolerance to Cd and Pb stress.
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Affiliation(s)
- Xiaohan Xu
- School of Water Conservancy and Environment, University of Jinan, No. 336, West Road of Nan Xinzhuang, Jinan, 250022, Shandong Province, China
| | - Baoshan Yang
- School of Water Conservancy and Environment, University of Jinan, No. 336, West Road of Nan Xinzhuang, Jinan, 250022, Shandong Province, China
| | - Guanghua Qin
- Shandong Academy of Forestry, No. 42, East Road of Wenhua Road, Jinan, 250014, Shandong Province, China.
| | - Hui Wang
- School of Water Conservancy and Environment, University of Jinan, No. 336, West Road of Nan Xinzhuang, Jinan, 250022, Shandong Province, China.
| | - Yidan Zhu
- School of Water Conservancy and Environment, University of Jinan, No. 336, West Road of Nan Xinzhuang, Jinan, 250022, Shandong Province, China
| | - Kaizhen Zhang
- School of Water Conservancy and Environment, University of Jinan, No. 336, West Road of Nan Xinzhuang, Jinan, 250022, Shandong Province, China
| | - Hanqi Yang
- The Xiuwen International Academy at Jinan, Jinan, 250100, China
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36
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Nandillon R, Lebrun M, Miard F, Gaillard M, Sabatier S, Villar M, Bourgerie S, Morabito D. Capability of amendments (biochar, compost and garden soil) added to a mining technosol contaminated by Pb and As to allow poplar seed (Populus nigra L.) germination. ENVIRONMENTAL MONITORING AND ASSESSMENT 2019; 191:465. [PMID: 31243568 DOI: 10.1007/s10661-019-7561-6] [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: 06/30/2018] [Accepted: 05/23/2019] [Indexed: 06/09/2023]
Abstract
The germination capacity of poplar seeds has never been studied in the context of metal(loid)-contaminated soils, even though poplars are present over a vast geographical area. In this study, black poplar seeds from the Loire Valley (France) were grown for 28 days in mesocosm on a heavily polluted soil that was subjected to different amendments. This phytomanagement process aimed to allow the revegetation of an As and Pb-contaminated mining soil by adding appropriate amendments, resulting in metal(loid) soil stabilisation and efficient plant growth. The objectives were to evaluate the effect of three amendments (garden soil, compost and biochar) when added alone or combined to a technosol on (i) the soil physicochemical properties, (ii) the mobility of As and Pb in the soil pore water (SPW), (iii) the capacity of poplar seeds to germinate and to grow and (iv) the metal(loid) distribution within the plant organs. The addition of amendments alone or combined allowed a 90% decrease in SPW Pb concentrations, while the arsenic concentrations were between 18 and 416 times higher. However, we were only able to obtain seed germination and plant growth on amended soils. These promising results will allow us to explore the use of such amendments in rehabilitating areas that are sources of significant metal(loid) dissemination, as well as allowing a natural plant recolonisation of these sites by seeds from the surrounding environment.
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Affiliation(s)
- R Nandillon
- INRA USC1328, LBLGC EA1207, University of Orléans, Orléans, France
- IDDEA, 289 Boulevard Duhamel du Monceau, 45160, Olivet, France
- BRGM, ISTO, UMR 7327, BP 36009, 45060, Orléans, France
| | - M Lebrun
- INRA USC1328, LBLGC EA1207, University of Orléans, Orléans, France
- Dipartimento di Bioscienze e Territorio, University of Molise, 86090, Pesche, Italy
| | - F Miard
- INRA USC1328, LBLGC EA1207, University of Orléans, Orléans, France
| | - M Gaillard
- IDDEA, 289 Boulevard Duhamel du Monceau, 45160, Olivet, France
| | - S Sabatier
- IDDEA, 289 Boulevard Duhamel du Monceau, 45160, Olivet, France
| | - M Villar
- UMR 0588 BIOFORA, INRA ONF, 45075, Orléans Cedex 2, France
| | - S Bourgerie
- INRA USC1328, LBLGC EA1207, University of Orléans, Orléans, France
| | - D Morabito
- INRA USC1328, LBLGC EA1207, University of Orléans, Orléans, France.
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Xu S, Li B, Li P, He X, Chen W, Yan K, Li Y, Wang Y. Soil high Cd exacerbates the adverse impact of elevated O 3 on Populus alba 'Berolinensis' L. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 174:35-42. [PMID: 30818258 DOI: 10.1016/j.ecoenv.2019.02.057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 02/13/2019] [Accepted: 02/16/2019] [Indexed: 06/09/2023]
Abstract
Pollution with both heavy metal and ground-level ozone (O3) has been steadily increasing, especially in the cities with heavy industry. Little information is known about their combined impacts on urban tree. This study was aimed at characterizing the interactive effects of soil cadmium (Cd) addition and O3 fumigation on visible injury and growth, photosynthesis, oxidative stress, antioxidant enzyme activities, abscisic acid (ABA) content and bioaccumulation of Cd in one-year-old Populus alba 'Berolinensis' saplings by using open top chambers in Shenyang city with developed heavy industry, Northeast China. In this study, poplar saplings were grown in the pots containing soil with different concentrations of Cd (0, 100 and 500 mg kg-1) under ambient air (40 µg L-1) and elevated O3 (120 µg L-1). The results showed that EO and its combination with high Cd (500 mg kg-1) induced significant foliar injury symptoms, decreased root weight (by 41.6%) and total biomass (by 17.4%), inhibited net photosynthetic rate and stomatal conductance, and increased malondialdehyde and ABA contents after 4 weeks of O3 exposure. Elevated O3 exacerbated the accumulation of Cd in leaves and stems of poplar plants grown in the pots with high Cd-polluted soil. Our results also indicated that high Cd pollution in soil increased the susceptibility of plants to O3 and exacerbated the adverse impact of elevated O3 on physiological metabolisms of poplar species, which implied that it was very necessary to take into consideration for O3-tolerance of tree species during phytoremediation of Cd-polluted soil in heavy industrial areas.
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Affiliation(s)
- Sheng Xu
- Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, PR China
| | - Bo Li
- Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, PR China
| | - Pin Li
- Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China
| | - Xingyuan He
- Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, PR China.
| | - Wei Chen
- Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, PR China
| | - Kun Yan
- Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China
| | - Yan Li
- Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, PR China
| | - Yijing Wang
- Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, PR China
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Nigam N, Khare P, Yadav V, Mishra D, Jain S, Karak T, Panja S, Tandon S. Biochar-mediated sequestration of Pb and Cd leads to enhanced productivity in Mentha arvensis. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 172:411-422. [PMID: 30735973 DOI: 10.1016/j.ecoenv.2019.02.006] [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: 06/29/2018] [Revised: 01/31/2019] [Accepted: 02/01/2019] [Indexed: 05/08/2023]
Abstract
Immobilization of cadmium (Cd) and lead (Pb) along with the alleviation of their phytotoxicity in Mentha arvensis by biochar was examined in this investigation. A greenhouse experiment was executed to evaluate the effect of biochar (BC) amended Cd and Pb spiked soil on their immobilization and uptake, plant growth, photosynthetic attributes (total chlorophyll, photosynthetic rate, transpiration rate, and stomatal activity) and oxidative enzymes (guaiacol peroxidase: POD; catalase: CAT and superoxide dismutase: SOD). In the present study, the photosynthetic attributes showed that BC significantly improved the total chlorophyll, photosynthetic, transpiration rates, and stomatal activity in the plants. The incorporation of BC in soil increase the Pb and Cd tolerance in M. arvensis vis-à-vis improved the biomass yield and nutrient intake. In addition, biochar has also reduced the POD, CAT, and SOD in the plant as well as improved the soil pH and enzymatic activities. Overall, BC immobilized the Cd and Pb in soil by providing the binding site to the metals and reduced the phytotoxicity in M. arvensis. However, large-scale field trials of BC are required for safe cultivation of M. arvensis which is known for its phytopharmaceuticals importance.
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Affiliation(s)
- Nidhi Nigam
- Agronomy and Soil Science Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow 226015, India
| | - Puja Khare
- Agronomy and Soil Science Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow 226015, India.
| | - Vineet Yadav
- Agronomy and Soil Science Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow 226015, India
| | - Disha Mishra
- Agronomy and Soil Science Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow 226015, India
| | - Shilpi Jain
- Agronomy and Soil Science Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow 226015, India
| | - Tanmoy Karak
- Upper Assam Advisory Centre, Tea Research Association, Dikom, 786101 Dibrugarh, Assam, India; Department of Civil, Environmental and Ocean Engineering, Stevens Institute of Technology, 1 Castle Point Terrace, Hoboken, NJ 07030, USA
| | - Saumik Panja
- Department of Civil, Environmental and Ocean Engineering, Stevens Institute of Technology, 1 Castle Point Terrace, Hoboken, NJ 07030, USA
| | - S Tandon
- Chemical Processing and Technology Division, CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow 226015, India
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39
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Grottola CM, Giudicianni P, Pindozzi S, Stanzione F, Faugno S, Fagnano M, Fiorentino N, Ragucci R. Steam assisted slow pyrolysis of contaminated biomasses: Effect of plant parts and process temperature on heavy metals fate. WASTE MANAGEMENT (NEW YORK, N.Y.) 2019; 85:232-241. [PMID: 30803577 DOI: 10.1016/j.wasman.2018.12.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 11/28/2018] [Accepted: 12/21/2018] [Indexed: 06/09/2023]
Abstract
The post-treatment of biomass from phytoremediation is not yet a well-established practice due to the risk induced by the presence of Potentially Toxic Elements (PTEs). Pyrolysis is a thermochemical treatment that reduces the volume and weight of contaminated matter producing a combustible vapor phase and a solid residue (char). A key factor enhancing the economic and the environmental sustainability of biomass valorization through pyrolysis is the production of a market value char. A proper choice of the pyrolysis operating conditions should take into account the effect of final temperature on PTEs release, on the char physicochemical properties as well as on the mobility of retained PTEs. In particular, in this work the influence of both the temperature and the plant parts is discussed (branches and leaves of Populus Nigra L. and rhizomes and culms of Arundo donax L.) on the release of Cd, Pb, Cu, and Zn in the temperature range 653-873 K under steam assisted slow pyrolysis conditions. The mobility of the heavy metals retained in the chars was also studied as well as the product yields, the gas composition and char porosity. The results suggested that in presence of Cd it is necessary to operate at low-temperature (lower than 703 K) to obtain a heavy metals free vapor phase fuel, whereas in presence of one or more metals among Pb, Cu, and Zn, it is possible to conduct a pyrolytic treatment at higher temperatures, thus obtaining a char with high BET surface area and lower metals mobility.
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Affiliation(s)
- Corinna Maria Grottola
- Istituto di Ricerche sulla Combustione - C.N.R., p. le V. Tecchio, 80, 80125 Naples, Italy.
| | - Paola Giudicianni
- Istituto di Ricerche sulla Combustione - C.N.R., p. le V. Tecchio, 80, 80125 Naples, Italy
| | - Stefania Pindozzi
- Department of Agricultural Science, University of Naples Federico II, Via Università 100, 80055 Portici (NA), Italy
| | - Fernando Stanzione
- Istituto di Ricerche sulla Combustione - C.N.R., p. le V. Tecchio, 80, 80125 Naples, Italy
| | - Salvatore Faugno
- Department of Agricultural Science, University of Naples Federico II, Via Università 100, 80055 Portici (NA), Italy
| | - Massimo Fagnano
- Department of Agricultural Science, University of Naples Federico II, Via Università 100, 80055 Portici (NA), Italy
| | - Nunzio Fiorentino
- Department of Agricultural Science, University of Naples Federico II, Via Università 100, 80055 Portici (NA), Italy
| | - Raffaele Ragucci
- Istituto di Ricerche sulla Combustione - C.N.R., p. le V. Tecchio, 80, 80125 Naples, Italy
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40
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Shi WG, Liu W, Yu W, Zhang Y, Ding S, Li H, Mrak T, Kraigher H, Luo ZB. Abscisic acid enhances lead translocation from the roots to the leaves and alleviates its toxicity in Populus × canescens. JOURNAL OF HAZARDOUS MATERIALS 2019; 362:275-285. [PMID: 30243250 DOI: 10.1016/j.jhazmat.2018.09.024] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 09/06/2018] [Accepted: 09/07/2018] [Indexed: 05/18/2023]
Abstract
To shed light on physiological mechanisms underlying abscisic-acid (ABA)-mediated lead (Pb) uptake, translocation and detoxification, we exposed Populus × canescens saplings to either 0 or 3 mM Pb2+ in combination with either 0 or 10 μM exogenous ABA. Pb was taken up by the roots and accumulated mainly in the cortex. A fraction of the Pb in the roots was translocated to the leaves, thereby resulting in decreased photosynthesis and biomass. Pb accumulation caused a burst of reactive oxygen species (ROS), with higher concentrations of total thiols, glutathione, and ascorbate in the roots and/or leaves. Exogenous ABA stimulated Pb uptake, decreased Pb deposition in the cortex, and enhanced Pb vascular loading in the roots. Exogenous ABA alleviated the Pb-induced reductions in photosynthesis and root biomass, and decreased Pb-triggered ROS overproduction in the roots and/or leaves. Correspondingly, exogenous ABA stimulated the mRNA levels of a few genes involved in Pb uptake, transport, and detoxification, including NRAMP1.4, ABCG40, FRD3.1, PCS1.1, and ABCC1.1. These results suggest that exogenous ABA enhances Pb uptake and translocation, and alleviates Pb toxicity in poplars through the ABA-induced movement of Pb from the root cortex to the vascular stele, and transcriptionally regulated key genes involved in Pb tolerance.
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Affiliation(s)
- Wen-Guang Shi
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of The State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Wenzhe Liu
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of The State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Wenjian Yu
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of The State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Yuhong Zhang
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of The State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China
| | - Shen Ding
- College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Hong Li
- Postgraduate School, Chinese Academy of Forestry, Beijing 100091, China
| | - Tanja Mrak
- Slovenian Forestry Institute, Vecna pot 2, 1000 ljubljana, Slovenia
| | - Hojka Kraigher
- Slovenian Forestry Institute, Vecna pot 2, 1000 ljubljana, Slovenia
| | - Zhi-Bin Luo
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Silviculture of The State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China.
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41
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Manquián-Cerda K, Cruces E, Escudey M, Zúñiga G, Calderón R. Interactive effects of aluminum and cadmium on phenolic compounds, antioxidant enzyme activity and oxidative stress in blueberry (Vaccinium corymbosum L.) plantlets cultivated in vitro. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 150:320-326. [PMID: 29294441 DOI: 10.1016/j.ecoenv.2017.12.050] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 12/22/2017] [Accepted: 12/24/2017] [Indexed: 05/25/2023]
Abstract
To evaluate the potential role of phenolic compounds in Al and Cd stress tolerance mechanisms, Vaccinium corymbosum cv. Legacy plantlets were exposed to different metal concentrations. The present study used an in vitro plant model to test the effects of the following treatments: 100μM Al; 100μMAl + 50μMCd; and 100μMAl + 100μMCd during periods of 7, 14, 21 and 30 days. The oxidative damage was determined by the accumulation of malondialdehyde (MDA) and hydrogen peroxide (H2O2). The antioxidant activity values were determined using 1,1-diphenyl-2-picrylhydrazine (DPPH) and the ferric reducing antioxidant power test (FRAP). Additionally, the phenolic compound concentrations were determined using HPLC-DAD. The exposure to Al and Cd increased the MDA and H2O2 contents differentially, while the antioxidant capacity values showed differences between DPPH and FRAP with the largest changes in FRAP relative to Cd. SOD had the highest activity in the first 7 days, leading to a significant increase in phenolic compounds observed after 14 days, and chlorogenic acid was the major compound identified. Our results revealed that phenolic compounds seem to play an important role in the response to ROS. Therefore, the mechanisms of tolerance to Al and Cd in V. corymbosum will be determined by the type of metal and time of exposure.
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Affiliation(s)
- K Manquián-Cerda
- Facultad de Química y Biología, Universidad de Santiago de Chile, Av. B. O'Higgins, 3363 Santiago, Chile.
| | - E Cruces
- Centro Interactivo de Biología y Química Aplicada (CIBQA), Universidad Bernardo O'Higgins, General Gana 1780, 8370854 Santiago, Chile
| | - M Escudey
- Facultad de Química y Biología, Universidad de Santiago de Chile, Av. B. O'Higgins, 3363 Santiago, Chile; Center for the Development of Nanoscience and Nanotechnology, CEDENNA, 9170124 Santiago, Chile
| | - G Zúñiga
- Facultad de Química y Biología, Universidad de Santiago de Chile, Av. B. O'Higgins, 3363 Santiago, Chile
| | - R Calderón
- Centro de Investigación en Recursos Naturales y Sustentabilidad, Universidad Bernardo O'Higgins, Fabrica 1990, Segundo Piso, Santiago, Chile
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