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Qin XL, Zhao YQ, Zhang DJ, Wang KY, Chen WH, Tang ZZ, Chen YE, Yuan S, Ye L, Yuan M. Three species of rape responded to cadmium and melatonin alleviating Cd-toxicity in species-specific strategy. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 354:124178. [PMID: 38763294 DOI: 10.1016/j.envpol.2024.124178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 04/24/2024] [Accepted: 05/16/2024] [Indexed: 05/21/2024]
Abstract
Cadmium (Cd) pollution has been a significant concern in heavy metal pollution, prompting plants to adopt various strategies to mitigate its damage. While the response of plants to Cd stress and the impact of exogenous melatonin has received considerable attention, there has been limited focus on the responses of closely related species to these factors. Consequently, our investigation aimed to explore the response of three different species of rape to Cd stress and examine the influence of exogenous melatonin in this scenario. The research findings revealed distinctive responses among the investigated rape species. B. campestris showed the resistance to Cd and exhibited lower Cd absorption and sustained its physiological activity under Cd stress. In contrast, B. juncea accumulated much Cd and increased the amount of anthocyanin to mitigate the Cd-damage. Furthermore, B. napus showed the tolerance to Cd and tended to accumulate Cd in vacuoles under Cd stress, thereby decreasing the Cd damage and leading to higher activity of antioxidant enzymes and photosynthesis. Moreover, the application of exogenous melatonin significantly elevated the melatonin level in plants and mitigated Cd toxicity by promoting the activity of antioxidant enzymes, reducing Cd absorption, enhancing the chelating capacity with Cd, decreasing Cd accumulation in organelles, and reducing its fluidity. Specifically, exogenous melatonin increased the FHAc content in B. campestris, elevated the phytochelatins (PCs) level in B. napus, and stimulated photosynthesis in B. juncea. In summary, the findings underscore the species-specific responses of the three species of rape to both Cd stress and exogenous melatonin, highlighting the potential for tailored mitigation strategies based on the unique characteristics of each species.
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Affiliation(s)
- Xiao-Long Qin
- College of Life Science, Sichuan Agricultural University, 625014, Ya'an, China
| | - Yu-Qing Zhao
- College of Life Science, Sichuan Agricultural University, 625014, Ya'an, China
| | - De-Jun Zhang
- College of Life Science, Sichuan Agricultural University, 625014, Ya'an, China
| | - Ke-Yu Wang
- College of Life Science, Sichuan Agricultural University, 625014, Ya'an, China
| | - Wen-Hui Chen
- College of Life Science, Sichuan Agricultural University, 625014, Ya'an, China
| | - Zi-Zhong Tang
- College of Life Science, Sichuan Agricultural University, 625014, Ya'an, China
| | - Yang-Er Chen
- College of Life Science, Sichuan Agricultural University, 625014, Ya'an, China
| | - Shu Yuan
- College of Resources, Sichuan Agricultural University, 611130, Chengdu, China
| | - Lin Ye
- College of Animal Science and Technology, Sichuan Agricultural University, 611100, Chengdu, China
| | - Ming Yuan
- College of Life Science, Sichuan Agricultural University, 625014, Ya'an, China; State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China, Sichuan Agricultural University, 611130, Chengdu, China.
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Li S, He Z, Qiu W, Yu M, Wu L, Han X, Zhuo R. SpCTP3 from the hyperaccumulator Sedum plumbizincicola positively regulates cadmium tolerance by interacting with SpMDH1. JOURNAL OF HAZARDOUS MATERIALS 2024; 472:134517. [PMID: 38739960 DOI: 10.1016/j.jhazmat.2024.134517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 04/01/2024] [Accepted: 04/30/2024] [Indexed: 05/16/2024]
Abstract
Cadmium (Cd) is a heavy metal pollutant mainly originating from the discharge of industrial sewage, irrigation with contaminated water, and the use of fertilizers. The phytoremediation of Cd polluted soil depends on the identification of the associated genes in hyperaccumulators. Here, a novel Cd tolerance gene (SpCTP3) was identified in hyperaccumulator Sedum plumbizincicola. The results of Cd2+ binding and thermodynamic analyses, revealed the CXXC motif in SpCTP3 functions is a Cd2+ binding site. A mutated CXXC motif decreased binding to Cd by 59.93%. The subcellular localization analysis suggested that SpCTP3 is primarily a cytoplasmic protein. Additionally, the SpCTP3-overexpressing (OE) plants were more tolerant to Cd and accumulated more Cd than wild-type Sedum alfredii (NHE-WT). The Cd concentrations in the cytoplasm of root and leaf cells were significantly higher (53.75% and 71.87%, respectively) in SpCTP3-OE plants than in NHE-WT. Furthermore, malic acid levels increased and decreased in SpCTP3-OE and SpCTP3-RNAi plants, respectively. Moreover, SpCTP3 interacted with malate dehydrogenase 1 (MDH1). Thus, SpCTP3 helps regulate the subcellular distribution of Cd and increases Cd accumulation when it is overexpressed in plants, ultimately Cd tolerance through its interaction with SpMDH1. This study provides new insights relevant to improving the Cd uptake by Sedum plumbizincicola.
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Affiliation(s)
- Shaocui Li
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding of Zhejiang Province, the Research Institute of Subtropical Forestry Chinese Academy of Forestry, Hangzhou, Zhejiang 311400, PR China; Zhejiang Xiaoshan Institute of Cotton & Bast Fiber Crops, Zhejiang Institute of Landscape Plants and Flowers, Zhejiang Academy of Agricultural Sciences, Hangzhou 311251, China
| | - Zhengquan He
- Key Laboratory of Three Gorges Regional Plant Genetic & Germplasm Enhancement (CTGU)/ Biotechnology Research Center, China Three Gorges University, Yichang 443002, Hubei, PR China
| | - Wenmin Qiu
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding of Zhejiang Province, the Research Institute of Subtropical Forestry Chinese Academy of Forestry, Hangzhou, Zhejiang 311400, PR China
| | - Miao Yu
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding of Zhejiang Province, the Research Institute of Subtropical Forestry Chinese Academy of Forestry, Hangzhou, Zhejiang 311400, PR China
| | - Longhua Wu
- Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, PR China
| | - Xiaojiao Han
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding of Zhejiang Province, the Research Institute of Subtropical Forestry Chinese Academy of Forestry, Hangzhou, Zhejiang 311400, PR China.
| | - Renying Zhuo
- State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding of Zhejiang Province, the Research Institute of Subtropical Forestry Chinese Academy of Forestry, Hangzhou, Zhejiang 311400, PR China.
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ShangGuan X, Qi Y, Wang A, Ren Y, Wang Y, Xiao T, Shen Z, Wang Q, Xia Y. OsGLP participates in the regulation of lignin synthesis and deposition in rice against copper and cadmium toxicity. FRONTIERS IN PLANT SCIENCE 2023; 13:1078113. [PMID: 36714698 PMCID: PMC9878301 DOI: 10.3389/fpls.2022.1078113] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Accepted: 12/19/2022] [Indexed: 05/26/2023]
Abstract
Copper (Cu) and cadmium (Cd) are common heavy metal pollutants. When Cd and excessive Cu accumulate in plants, plant growth is reduced. Our previous study showed that Germin-like proteins (GLPs), which exist in tandem on chromosomes, are a class of soluble glycoproteins that respond to Cu stress. In this study, hydroponic cultures were carried out to investigate the effect of GLP on Cd and Cu tolerance and accumulation in rice. The results showed that knockout of a single OsGLP8-2 gene or ten OsGLP genes (OsGLP8-2 to OsGLP8-11) resulted in a similar sensitivity to Cd and Cu toxicity. When subjected to Cu and Cd stress, the glp8-2 and glp8-(2-11) mutants displayed a more sensitive phenotype based on the plant height, root length, and dry biomass of the rice seedlings. Correspondingly, Cu and Cd concentrations in the glp8-2 and glp8-(2-11) mutants were significantly higher than those in the wild-type (WT) and OsGLP8-2-overexpressing line. However, Cu and Cd accumulation in the cell wall was the opposite. Furthermore, we determined lignin accumulation. The overexpressing-OsGLP8-2 line had a higher lignin accumulation in the shoot and root cell walls than those of the WT, glp8-2, and glp8-(2-11). The expression of lignin synthesis genes in the OsGLP8-2-overexpressing line was significantly higher than that in the WT, glp8-2, and glp8-(2-11). The SOD activity of OsGLP8-2, Diaminobe-nzidine (DAB), propidium iodide (PI) staining, and Malondialdehyde (MDA) content determination suggested that OsGLP8-2 is involved in heavy metal-induced antioxidant defense in rice. Our findings clearly suggest that OsGLPs participate in responses to heavy metal stress by lignin deposition and antioxidant defense capacity in rice, and OsGLP8-2 may play a major role in the tandem repeat gene clusters of chromosome 8 under heavy metal stress conditions.
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Affiliation(s)
- Xiangchao ShangGuan
- College of Life Sciences, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource, Nanjing Agricultural University, Nanjing, China
| | - Ying Qi
- College of Agronomy, Yunnan Research Center of Urban Agricultural Engineering and Technology, Kunming University, Kunming, China
| | - Aiguo Wang
- Key Laboratory of Ecological Environment and Tobacco Quality in Tobacco Industry, Zhengzhou Tobacco Research Institute of China National Tobacco Corporation, Zhengzhou, China
| | - Yingnan Ren
- College of Life Sciences, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource, Nanjing Agricultural University, Nanjing, China
| | - Yu Wang
- College of Life Sciences, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource, Nanjing Agricultural University, Nanjing, China
| | - Tengwei Xiao
- College of Life Sciences, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource, Nanjing Agricultural University, Nanjing, China
| | - Zhenguo Shen
- College of Life Sciences, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource, Nanjing Agricultural University, Nanjing, China
| | - Qi Wang
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Yan Xia
- College of Life Sciences, Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource, Nanjing Agricultural University, Nanjing, China
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Kováčik J, Dresler S, Sowa I, Babula P, Antunes E. Calcium-enriched biochar modulates cadmium uptake depending on external cadmium dose. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 313:120178. [PMID: 36116567 DOI: 10.1016/j.envpol.2022.120178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 08/24/2022] [Accepted: 09/09/2022] [Indexed: 06/15/2023]
Abstract
The impact of calcium-enriched biochar (BC, containing Ca, Al, Fe and P as dominant elements in the range of 6.9-1.3% with alkaline pH) obtained from sewage sludge (0.1 or 0.5% in the final soil) on cadmium-induced toxicity (final dose of 1.5 mg Cd/kg in control and 4.5 or 16.5 mg Cd/kg soil in low and high Cd treatment) was tested in medicinal plant Matricaria chamomilla. Low Cd dose had typically less negative impact than high Cd dose at the level of minerals and metabolites and the effect of BC doses often differed. Contrary to expectations, 0.5% BC with a high Cd dose increased Cd accumulation in plants about 2-fold. This was reflected in higher signals of reactive oxygen species, but especially the high dose of BC increased the amount of antioxidants (ascorbic acid and non-protein thiols), minerals and amino acids in shoots and/or roots and usually mitigated the negative effect of Cd. Surprisingly, the relationship between BC and soluble phenols was negative at high BC + high Cd dose, whereas the effect of Cd and BC on organic acids (mainly tartaric acid) differed in shoots and roots. Interestingly, BC alone applied to the control soil (1.5 mg total Cd/kg) reduced the amount of Cd in the plants by about 30%. PCA analyses confirmed that metabolic changes clearly distinguished the high Cd + high BC treatment from the corresponding Cd/BC treatments in both shoots and roots. Thus, it is clear that the effect of biochar depends not only on its dose but also on the amount of Cd in the soil, suggesting the use of Ca-rich biochar both for phytoremediation and safer food production.
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Affiliation(s)
- Jozef Kováčik
- Department of Biology, University of Trnava, Priemyselná 4, 918 43 Trnava, Slovak Republic.
| | - Sławomir Dresler
- Department of Analytical Chemistry, Medical University of Lublin, Chodźki 4a, 20-093 Lublin, Poland; Department of Plant Physiology and Biophysics, Institute of Biological Science, Maria Curie-Skłodowska University, 20-033 Lublin, Poland
| | - Ireneusz Sowa
- Department of Analytical Chemistry, Medical University of Lublin, Chodźki 4a, 20-093 Lublin, Poland
| | - Petr Babula
- Department of Physiology, Faculty of Medicine, Masaryk University, Kamenice 753/5, 625 00 Brno, Czech Republic
| | - Elsa Antunes
- College of Science and Engineering, James Cook University, 1 James Cook Dr, QLD 4814 Townsville, Australia
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Phytochemical analysis reveals an antioxidant defense response in Lonicera japonica to cadmium-induced oxidative stress. Sci Rep 2022; 12:6840. [PMID: 35477983 PMCID: PMC9046209 DOI: 10.1038/s41598-022-10912-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 04/13/2022] [Indexed: 11/09/2022] Open
Abstract
Cadmium (Cd), though potentially beneficial at lower levels to some plant species, at higher levels is a toxic metal that is detrimental to plant growth and development. Cd is also a carcinogen to humans and other contaminated plant consumers, affecting the kidneys and reducing bone strength. In this study we investigated responses of growth, chlorophyll content, reactive oxygen species levels, and antioxidant responses to Cd in honeysuckle leaves (Lonicera japonica Thunb.), a potential Cd hyperaccumulator. Results indicated that plant height, dry weight, leaf area, and chlorophyll content increased when honeysuckle was exposed to 10 mg kg-1 or 30 mg kg-1 Cd (low concentration). However, in response to 150 mg kg-1 or 200 mg kg-1 Cd (high concentration) these growth parameters and chlorophyll content significantly decreased relative to untreated control plant groups. Higher levels of superoxide radical (O2·-) and hydrogen peroxide (H2O2) were observed in high concentration Cd groups. The activities of ascorbate peroxidase (APX), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR), and glutathione reductase were enhanced with exposure to increasing levels of Cd. Additionally, the Ascorbate-Glutathione (AsA-GSH) cycle was activated for the removal of H2O2 in honeysuckle in response to elevated Cd. The Pearson correlation analysis, a redundancy analysis, and a permutation test indicated that proline and APX were dominant antioxidants for removing O2·- and H2O2. The antioxidants GSH and non-protein thiols (NPTs) also increased as the concentration of Cd increased.
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Samanta S, Banerjee A, Roychoudhury A. Exogenous melatonin regulates endogenous phytohormone homeostasis and thiol-mediated detoxification in two indica rice cultivars under arsenic stress. PLANT CELL REPORTS 2021; 40:1585-1602. [PMID: 34003317 DOI: 10.1007/s00299-021-02711-7] [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: 03/02/2021] [Accepted: 04/30/2021] [Indexed: 05/02/2023]
Abstract
Melatonin enhanced arsenic (As) tolerance by inhibiting As bioaccumulation, modulating the expression of As transporters and phytohormone homeostasis, leading to efficient utilization of thiol machinery for sequestration and detoxification of this toxic metalloid. The present study was aimed at investigating the influence of exogenous melatonin on the regulation of endogenous plant growth regulators and their cumulative effects on metal(loid)-binding ligands in two contrasting indica rice cultivars, viz., Khitish (arsenic sensitive) and Muktashri (arsenic tolerant) under arsenic stress. Melatonin supplementation ameliorated arsenic-induced perturbations by triggering endogenous levels of gibberellic acid and melatonin, via up-regulating the expression of key biosynthetic genes like GA3ox, TDC, SNAT and ASMT. The endogenous abscisic acid content was also enhanced upon melatonin treatment by induced expression of the key anabolic gene, NCED3 and concomitant suppression of ABA8ox1. Enhanced melatonin content induced accumulation of higher polyamines (spermidine and spermine), together with up-regulation of SPDS and SPMS in Khitish, thereby modulating stress condition. On the contrary, melatonin escalated putrescine and spermidine levels in Muktashri, via enhanced expression of ADC and SAMDC. The role of melatonin appeared to be more prominent in Khitish, as evident from better utilization of thiol components like cysteine, GSH, non-protein thiols and phytochelatins, with higher GSH/GSSG ratio, despite down-regulated expression of corresponding thiol-metabolic genes (OsMT2 and OsPCS1) to deal with arsenic toxicity. The extent of arsenic bioaccumulation, which was magnified several folds, particularly in Khitish, was decreased upon melatonin application. Overall, our observation highlighted the fact that melatonin enhanced arsenic tolerance by inhibiting arsenic bioaccumulation, via modulating the expression levels of selected arsenic transporters (OsNramp1, OsPT2, OsPT8, OsLsi1) and controlling endogenous phytohormone homeostasis, leading to efficient utilization of thiol machinery for sequestration and detoxification of this toxic metalloid.
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Affiliation(s)
- Santanu Samanta
- Post Graduate Department of Biotechnology, St. Xavier's College (Autonomous), 30, Mother Teresa Sarani, Kolkata, West Bengal, 700016, India
| | - Aditya Banerjee
- Post Graduate Department of Biotechnology, St. Xavier's College (Autonomous), 30, Mother Teresa Sarani, Kolkata, West Bengal, 700016, India
| | - Aryadeep Roychoudhury
- Post Graduate Department of Biotechnology, St. Xavier's College (Autonomous), 30, Mother Teresa Sarani, Kolkata, West Bengal, 700016, India.
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Chen J, Jin P, Huang S, Guo Y, Tan F, Wang J, Shu Y. Cabbage cultivars influence transfer and toxicity of cadmium in soil-Chinese flowering cabbage Brassica campestris-cutworm Spodoptera litura larvae. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 213:112076. [PMID: 33639562 DOI: 10.1016/j.ecoenv.2021.112076] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 01/19/2021] [Accepted: 02/16/2021] [Indexed: 06/12/2023]
Abstract
We executed a pot experiment to examine the differences of absorption, chemical forms, subcellular distribution, and toxicity of Cd between two cultivars of Chinese flowering cabbage Brassica campestris [Lvbao701 (low-Cd cultivar) and Chicaixin No.4 (high-Cd cultivar)]. Compared to Chicaixin No.4, the presence of Lvbao701 enhanced the proportion of insoluble Cd forms in soil, Lvbao701 roots and leaves had higher proportion of Cd converted into insoluble phosphate precipitates and pectate-or protein-bound forms and lower proportion of inorganic Cd, which result in low accumulation and toxicity of Cd to Lvbao701 and cutworm Spodoptera litura fed on Lvbao701 leaves. Instead of total Cd, Cd transfer and toxicity in B. campestris-S. litura system depend on chemical Cd forms in soil and cabbages and subcellular Cd distributions in cabbages and insects, and the proportions of them were not the highest among all chemical forms and subcellular distributions of Cd. Although exchangeable Cd was major Cd chemical form in cabbage planted soil, Cd bound to iron and manganese oxides and to organic matter were significantly correlated with growth indices and photosynthesis parameters of cabbages. Despite major part of Cd was precipitated in cell wall of roots, Cd in organelle fraction was closely associated with the fitness of cabbages. Metal-rich granules, not cytosolic fraction (the major subcellular Cd distribution), affected the food utilization of S. litura. Therefore, cabbage cultivars significantly affected Cd transfer and toxicity in B. campestris-S. litura system, and the use of Lvbao701 in Cd polluted soil could reduce potential risks for Cd entering food chains.
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Affiliation(s)
- Jin Chen
- Guangdong Provincial Key Laboratory of Eco-Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Engineering Research Centre for Modern Eco-Agriculture, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Pan Jin
- Guangdong Provincial Key Laboratory of Eco-Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Engineering Research Centre for Modern Eco-Agriculture, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Shimin Huang
- Guangdong Provincial Key Laboratory of Eco-Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Engineering Research Centre for Modern Eco-Agriculture, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Yeshan Guo
- Guangdong Provincial Key Laboratory of Eco-Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Engineering Research Centre for Modern Eco-Agriculture, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Fengxiao Tan
- Guangdong Provincial Key Laboratory of Eco-Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Engineering Research Centre for Modern Eco-Agriculture, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China
| | - Jianwu Wang
- Guangdong Provincial Key Laboratory of Eco-Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Engineering Research Centre for Modern Eco-Agriculture, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China.
| | - Yinghua Shu
- Guangdong Provincial Key Laboratory of Eco-Circular Agriculture, South China Agricultural University, Guangzhou 510642, China; Key Laboratory of Agro-Environment in the Tropics, Ministry of Agriculture, South China Agricultural University, Guangzhou 510642, China; Guangdong Engineering Research Centre for Modern Eco-Agriculture, Guangzhou 510642, China; Department of Ecology, College of Natural Resources and Environment, South China Agricultural University, Guangzhou 510642, China.
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Shi D, Zhuang K, Chen Y, Hu Z, Shen Z. Phytotoxicity and accumulation of Cu in mature and young leaves of submerged macrophyte Hydrilla verticillata (L.f.) Royle. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 208:111684. [PMID: 33396016 DOI: 10.1016/j.ecoenv.2020.111684] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 11/03/2020] [Accepted: 11/17/2020] [Indexed: 06/12/2023]
Abstract
Phytotoxicity and accumulation of Cu in mature and young leaves of submerged macrophyte Hydrilla verticillata (L.f.) Royle were investigated by analyzing the chlorophyll contents, chloroplast ultrastructure and leaf surface structure under different Cu treatments (0, 0.01, 0.05 and 0.1 f mg L-1). The results showed that 0.05 and 0.1 mg L-1 Cu treatment decreased the contents of Chl a and Chl b, and caused damage on leaf surface structure and chloroplast ultrastructure compared with control (0 mg L-1 Cu treatment). Higher concentration of Cu induced Chlorophyll decreases and the damages on the leaf surface structure and chloroplast ultrastructure were more pronounced in mature than in young leaves. It was observed that leaf Cu concentration increased almost linearly with exposure time and majority of the Cu accumulated in the cell walls. Among different cell wall fractions, the majority of Cu accumulated in cell walls was bound to the hemicellulose 1 and cellulose, followed by the pectin, hemicellulose 2. Mature leaves had significantly higher the concentrations of total Cu and bound-Cu in cell walls due to higher uronic acid content in their cell wall fractions (pectin, hemicellulose 1 and cellulose) than young leaves. Distinct cell wall composition might partially contribute to the different Cu toxicity and accumulation between mature and young leaves of submerged macrophyte H. verticillata. Our results show that mature leaves are more efficient in the uptake and accumulation of Cu than young leaves, which might explain why mature leaves sustain more severe damage.
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Affiliation(s)
- Danlu Shi
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Kai Zhuang
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Yahua Chen
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Zhubing Hu
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng 475004, PR China.
| | - Zhenguo Shen
- College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, PR China.
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Meng Y, Zhang L, Wang L, Zhou C, Shangguan Y, Yang Y. Antioxidative enzymes activity and thiol metabolism in three leafy vegetables under Cd stress. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 173:214-224. [PMID: 30772711 DOI: 10.1016/j.ecoenv.2019.02.026] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Revised: 02/05/2019] [Accepted: 02/07/2019] [Indexed: 05/15/2023]
Abstract
The enrichment of Cadmium in vegetables is threatening human health. The study aimed to screen Cd low-enriched leafy vegetables and explore whether antioxidative enzymes and heavy metal chelators are synergistic defensive mechanisms. In this paper, the Cd accumulation and translocation of garland chrysanthemum (Chrysanthemum coronarium L.), spinach (Spinacia oleracea L.), and lettuce (Lactuca sativa L.) were examined by soil pot culture and hydroponic experiments. The responses of oxidative stress markers, antioxidative enzymes activity, and thiol pool (cysteine, γ-glutamylcysteine, glutathione, and phytochelatins) content to Cd stress were assayed. The results showed that Garland chrysanthemum was Cd low-uptake species. The soil Cd safety thresholds for spinach, lettuce, and garland chrysanthemum were 0.41, 0.49, and 9.10 mg kg-1, respectively. The order of root phytochelatins (PCs) concentration was consistent with that of plant tolerance index (TI): garland chrysanthemum > spinach > lettuce. While the order of the ratio of shoot Cd to root Cd (SR ratio) was exactly the opposite of that of TI. In lettuce root, activity of superoxide dismutase, peroxidase, and catalase decreased significantly under Cd stress. Nevertheless those parameters in the roots of spinach and lettuce maintained steady, or even enhanced. In conclusion, the Cd translocation and partition in plant, antioxidative defense, and PCs homeostasis played an important role in the Cd tolerance of vegetables.
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Affiliation(s)
- Yuan Meng
- College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Liang Zhang
- College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Linquan Wang
- College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Chunju Zhou
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Yuxian Shangguan
- Soil and Fertilizer Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066, China
| | - Yang Yang
- Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
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Yu Y, Zhou X, Zhu Z, Zhou K. Sodium Hydrosulfide Mitigates Cadmium Toxicity by Promoting Cadmium Retention and Inhibiting Its Translocation from Roots to Shoots in Brassica napus. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:433-440. [PMID: 30569699 DOI: 10.1021/acs.jafc.8b04622] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The association between hydrogen sulfide (H2S) and cell wall composition with regard to the mitigation of cadmium (Cd) toxicity in Brassica napus L. was investigated. Cd caused growth retardation, leaf chlorosis, and decreased endogenous H2S content in Brassica napus roots. Stimulating l-cysteine desulfhydrase (LCD)-mediated H2S production with H2S releaser (NaHS) markedly improved plant growth, reduced Cd content in stems and leaves, and rescued Cd-induced chlorosis. Furthermore, increased Cd retention was observed in root cell walls, indicating that NaHS reduced Cd movement from the roots to upper-plant parts. Exogenous NaHS also significantly increased the content of pectin and the activity of pectin methylesterase in cell walls of roots, thereby increasing Cd retention in pectin fractions. However, intensification of H2S barely affected hemicellulose content under Cd stress. Intensified H2S signal, therefore, alleviates Cd toxicity in Brassica napus by increasing pectin content and its demethylation, increasing Cd fixation in cell walls, and reducing root-to-shoot Cd translocation.
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Affiliation(s)
- Yan Yu
- School of Agronomy , Anhui Agricultural University , Hefei 230036 , People's Republic of China
| | - Xiangyu Zhou
- School of Agronomy , Anhui Agricultural University , Hefei 230036 , People's Republic of China
| | - Zonghe Zhu
- School of Agronomy , Anhui Agricultural University , Hefei 230036 , People's Republic of China
| | - Kejin Zhou
- School of Agronomy , Anhui Agricultural University , Hefei 230036 , People's Republic of China
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11
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Impacts and interactions of organic compounds with chlorine sanitizer in recirculated and reused produce processing water. PLoS One 2018; 13:e0208945. [PMID: 30540850 PMCID: PMC6291160 DOI: 10.1371/journal.pone.0208945] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 11/27/2018] [Indexed: 11/19/2022] Open
Abstract
Water conservation and economics dictate that fresh produce processors reuse/recirculate the process water. However, the ensuing accumulation of organic matter in water depletes the chlorine sanitizer required for food safety. In this study, we comprehensively investigated chemical compounds that are responsible for water quality in relation to chemical oxygen demand (COD) and chlorine demand (CLD), the two most critical factors associated with water treatment and chlorine replenishment. Simulating commercial fresh-cut wash operations, multiple batches of diced cabbage (0.3 x 0.3 cm2) were washed in the same tank of water. The major components were isolated from the wash water and analyzed by HPLC. Sugars were the predominant compounds (82.7% dry weight) and the major contributor to COD (81.6%), followed by proteins/peptides (7.3% dry weight, 5.3% COD), organic acids (6.2% dry weight, 3.6% COD), and phenolics (0.5% dry weight, 0.5% COD). By repeated time course measures, the effect of these chemicals on CLD are dependent on the chemical structure, concentration in the wash water, and their rate of reaction. Proteins/peptides accounted for about 50% of the total CLD over a 120-min period and phenolics was 21% at 5 min, but diminished with time. The contribution by organic acids and sugars increased continuously, reaching 22% and 16% of total CLD at 120 min of chlorination, respectively. Collectively, these compounds represented 86% of the CLD in cabbage wash water at 5 min and greater than 94% CLD afterwards. This is the first systematic report on the source of COD and CLD during fresh produce washing. It provides essential information for the produce processors to develop safe, effective, and economical wash water treatment/reuse and chlorine replenishment strategies.
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12
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Cheng S, Yu H, Hu M, Wu Y, Cheng L, Cai Q, Tu Y, Xia T, Peng L. Miscanthus accessions distinctively accumulate cadmium for largely enhanced biomass enzymatic saccharification by increasing hemicellulose and pectin and reducing cellulose CrI and DP. BIORESOURCE TECHNOLOGY 2018; 263:67-74. [PMID: 29730520 DOI: 10.1016/j.biortech.2018.04.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Revised: 04/02/2018] [Accepted: 04/07/2018] [Indexed: 05/06/2023]
Abstract
In this study, total eight distinct Miscanthus accessions were collected from the cadmium (Cd)-supplied soil pots, and mild alkali pretreatments (0.5%, 1% NaOH) were then performed to enhance biomass enzymatic saccharification. Due to large Cd accumulation, all Miscanthus accessions showed significantly reduced cellulose levels and features (CrI, DP) with much increased hemicellulose and pectin contents in the mature stems. Under mild alkali pretreatments, all Miscanthus samples exhibited largely increased hexoses yields released from enzymatic hydrolysis, and one desirable accession had an almost complete biomass saccharification with the hexoses yield at 100% (% cellulose). Notably, the biomass residues remained from enzymatic hydrolysis upon 1% NaOH pretreatment could absorb 73-96% Cd (% of total), suggesting an applicable approach for Cd phyto-remediation. Hence, a hypothetic model was proposed to elucidate that the enhanced biomass saccharification should be mainly due to much reduced cellulose CrI and DP in the Cd-accumulated Miscanthus accessions.
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Affiliation(s)
- Shaozhe Cheng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Hua Yu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Meng Hu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yue Wu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Liangliang Cheng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Qiuming Cai
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yuanyuan Tu
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Tao Xia
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Life Sciences and Technology, Huazhong Agricultural University, Wuhan, China
| | - Liangcai Peng
- Biomass and Bioenergy Research Centre, Huazhong Agricultural University, Wuhan, China; College of Plant Sciences and Technology, Huazhong Agricultural University, Wuhan, China; School of Life Science and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China.
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Feng J, Jia W, Lv S, Bao H, Miao F, Zhang X, Wang J, Li J, Li D, Zhu C, Li S, Li Y. Comparative transcriptome combined with morpho-physiological analyses revealed key factors for differential cadmium accumulation in two contrasting sweet sorghum genotypes. PLANT BIOTECHNOLOGY JOURNAL 2018; 16:558-571. [PMID: 28703450 PMCID: PMC5787832 DOI: 10.1111/pbi.12795] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 05/22/2017] [Accepted: 07/10/2017] [Indexed: 05/19/2023]
Abstract
Cadmium (Cd) is a widespread soil contaminant threatening human health. As an ideal energy plant, sweet sorghum (Sorghum bicolor (L.) Moench) has great potential in phytoremediation of Cd-polluted soils, although the molecular mechanisms are largely unknown. In this study, key factors responsible for differential Cd accumulation between two contrasting sweet sorghum genotypes (high-Cd accumulation one H18, and low-Cd accumulation one L69) were investigated. H18 exhibited a much higher ability of Cd uptake and translocation than L69. Furthermore, Cd uptake through symplasmic pathway and Cd concentrations in xylem sap were both higher in H18 than those in L69. Root anatomy observation found the endodermal apoplasmic barriers were much stronger in L69, which may restrict the Cd loading into xylem. The molecular mechanisms underlying these morpho-physiological traits were further dissected by comparative transcriptome analysis. Many genes involved in cell wall modification and heavy metal transport were found to be Cd-responsive DEGs and/or DEGs between these two genotypes. KEGG pathway analysis found phenylpropanoid biosynthesis pathway was over-represented, indicating this pathway may play important roles in differential Cd accumulation between two genotypes. Based on these results, a schematic representation of main processes involved in differential Cd uptake and translocation in H18 and L69 is proposed, which suggests that higher Cd accumulation in H18 depends on a multilevel coordination of efficient Cd uptake and transport, including efficient root uptake and xylem loading, less root cell wall binding, and weaker endodermal apoplasmic barriers.
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Affiliation(s)
- Juanjuan Feng
- Key Laboratory of Plant Molecular PhysiologyInstitute of BotanyChinese Academy of SciencesBeijingChina
| | - Weitao Jia
- Key Laboratory of Plant Molecular PhysiologyInstitute of BotanyChinese Academy of SciencesBeijingChina
| | - Sulian Lv
- Key Laboratory of Plant Molecular PhysiologyInstitute of BotanyChinese Academy of SciencesBeijingChina
| | - Hexigeduleng Bao
- Key Laboratory of Plant Molecular PhysiologyInstitute of BotanyChinese Academy of SciencesBeijingChina
- College of Life SciencesChina Jiliang UniversityHangzhouChina
| | - Fangfang Miao
- Key Laboratory of Plant Molecular PhysiologyInstitute of BotanyChinese Academy of SciencesBeijingChina
| | - Xuan Zhang
- Key Laboratory of Plant Molecular PhysiologyInstitute of BotanyChinese Academy of SciencesBeijingChina
| | - Jinhui Wang
- Key Laboratory of Plant Molecular PhysiologyInstitute of BotanyChinese Academy of SciencesBeijingChina
| | - Jihong Li
- Institute of Nuclear and New Energy TechnologyTsinghua UniversityBeijingChina
- Beijing Engineering Research Center for BiofuelsTsinghua UniversityBeijingChina
| | - Dongsheng Li
- Institute of Nuclear and New Energy TechnologyTsinghua UniversityBeijingChina
- Beijing Engineering Research Center for BiofuelsTsinghua UniversityBeijingChina
| | - Cheng Zhu
- College of Life SciencesChina Jiliang UniversityHangzhouChina
| | - Shizhong Li
- Institute of Nuclear and New Energy TechnologyTsinghua UniversityBeijingChina
- Beijing Engineering Research Center for BiofuelsTsinghua UniversityBeijingChina
| | - Yinxin Li
- Key Laboratory of Plant Molecular PhysiologyInstitute of BotanyChinese Academy of SciencesBeijingChina
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Fernández-Fuego D, Bertrand A, González A. Metal accumulation and detoxification mechanisms in mycorrhizal Betula pubescens. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 231:1153-1162. [PMID: 28941719 DOI: 10.1016/j.envpol.2017.07.072] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 07/19/2017] [Accepted: 07/22/2017] [Indexed: 06/07/2023]
Abstract
Metal detoxification in plants is a complex process that involves different mechanisms, such as the retention of metals to the cell wall and their chelation and subsequent compartmentalization in plant vacuoles. In order to identify the mechanisms involved in metal accumulation and tolerance in Betula pubescens, as well as the role of mycorrhization in these processes, mycorrhizal and non-mycorrhizal plants were grown in two industrial soils with contrasting concentrations of heavy metals. Mycorrhization increased metal uptake at low metal concentrations in the soil and reduced it at high metal concentrations, which led to an enhanced growth and biomass production of the host when growing in the most polluted soil. Our results suggest that the sequestration on the cell wall is the main detoxification mechanism in white birch exposed to acute chronic metal-stress, while phytochelatins play a role mitigating metal toxicity inside the cells. Given its high Mn and Zn root-to-shoot translocation rate, Betula pubescens is a very promising species for the phytoremediation of soils polluted with these metals.
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Affiliation(s)
- D Fernández-Fuego
- Departamento de Biología de Organismos y Sistemas, Universidad de Oviedo, Catedrático Rodrigo Uría s/n, 33071 Oviedo, Spain; Instituto Universitario de Biotecnología de Asturias, Spain
| | - A Bertrand
- Departamento de Biología de Organismos y Sistemas, Universidad de Oviedo, Catedrático Rodrigo Uría s/n, 33071 Oviedo, Spain; Instituto Universitario de Biotecnología de Asturias, Spain
| | - A González
- Departamento de Biología de Organismos y Sistemas, Universidad de Oviedo, Catedrático Rodrigo Uría s/n, 33071 Oviedo, Spain; Instituto Universitario de Biotecnología de Asturias, Spain.
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Ashrafzadeh S, Leung DWM. Novel potato plants with enhanced cadmium resistance and antioxidative defence generated after in vitro cell line selection. PLoS One 2017; 12:e0185621. [PMID: 28968406 PMCID: PMC5624614 DOI: 10.1371/journal.pone.0185621] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 09/15/2017] [Indexed: 11/18/2022] Open
Abstract
It is of interest to apply plant tissue culture to generate plants resistant to toxic effects of cadmium (Cd) on plant growth. Callus cultures were initiated from leaf explants of micropropagated potato plantlets (Solanum tuberosum L., cv. Iwa) for in vitro selection comprising 18 different Cd treatments varying in Cd exposure timing and duration. Plantlets regenerated from two different lines of Cd-selected calli, L9 and L11, were found to exhibit enhanced resistance to 218 μM Cd compared to control (source plantlets for leaf explants used to initiate callus cultures for Cd resistance). In response to 218 μM Cd, L11 plantlets had lower levels of lipid peroxidation and hydrogen peroxide than control and L9 plantlets. In addition, antioxidative enzyme activities in L11 were generally higher than control. L11 also had a higher level of proline than control.
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Affiliation(s)
- Seyedardalan Ashrafzadeh
- School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | - David W. M. Leung
- School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
- * E-mail:
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16
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Fang Z, Lou L, Tai Z, Wang Y, Yang L, Hu Z, Cai Q. Comparative study of Cd uptake and tolerance of two Italian ryegrass ( Lolium multiflorum) cultivars. PeerJ 2017; 5:e3621. [PMID: 29018594 PMCID: PMC5628607 DOI: 10.7717/peerj.3621] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 07/07/2017] [Indexed: 11/21/2022] Open
Abstract
Cadmium (Cd) is one of the most toxic heavy metals and is difficult to be removed from contaminated soil and water. Italian ryegrass (Lolium multiflorum), as an energy crop, exhibits a valuable potential to develop Cd polluted sites due to its use as a biofuel rather than as food and forage. Previously, via a screening for Cd-tolerant ryegrass, the two most extreme cultivars (IdyII and Harukaze) with high and low Cd tolerance during seed germination, respectively, were selected. However, the underlying mechanism for Cd tolerance was not well investigated. In this study, we comparatively investigated the growth, physiological responses, and Cd uptake and translocation of IdyII and Harukaze when the seedlings were exposed to a Cd (0–100 μM) solution for 12 days. As expected, excess Cd inhibited seedling growth and was accompanied by an accumulation of malondialdehyde (MDA) and reduced photosynthetic pigments in both cultivars. The effects of Cd on the uptake and translocation of other nutrient elements (Zn, Fe, Mn and Mg) were dependent on Cd concentrations, cultivars, plant tissues and elements. Compared with Harukaze, IdyII exhibited better performance with less MDA and higher pigment content. Furthermore, IdyII was less efficient in Cd uptake and translocation compared to Harukaze, which might be explained by the higher non-protein thiols content in its roots. Taken together, our data indicate that IdyII is more tolerant than Harukaze, which partially resulted from the differences in Cd uptake and translocation.
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Affiliation(s)
- Zhigang Fang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, China.,Kashgar University, Kashgar, Xinjiang, China
| | - Laiqing Lou
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Zhenglan Tai
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Yufeng Wang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Lei Yang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Zhubing Hu
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, China
| | - Qingsheng Cai
- College of Life Sciences, Nanjing Agricultural University, Nanjing, Jiangsu, China
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17
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Kandziora-Ciupa M, Nadgórska-Socha A, Barczyk G, Ciepał R. Bioaccumulation of heavy metals and ecophysiological responses to heavy metal stress in selected populations of Vaccinium myrtillus L. and Vaccinium vitis-idaea L. ECOTOXICOLOGY (LONDON, ENGLAND) 2017; 26:966-980. [PMID: 28624857 PMCID: PMC5563338 DOI: 10.1007/s10646-017-1825-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/07/2017] [Indexed: 05/25/2023]
Abstract
The aim of this study was to determine the concentrations of heavy metals (Cd, Pb, Zn, Fe, and Mn) in soil, and their bioavailability and bioaccumulation in Vaccinium myrtillus L. and Vaccinium vitis-idaea L. organs. Analysis also concerned the physiological responses of these plants from three polluted sites (immediate vicinity of a zinc smelter in Miasteczko Śląskie, ArcelorMittal Poland S.A. iron smelter in Dąbrowa Górnicza-Łosień, and Jaworzno III power plant in Jaworzno) and one pseudo-control site (Pazurek nature reserve in Jaroszowiec Olkuski). All of the sites are situated in the southern parts of Poland in the Śląskie or Małopolskie provinces. The contents of proline, non-protein thiols, glutathione, ascorbic acid, and the activity of superoxide dismutase and guaiacol peroxidase in the leaves of Vaccinium myrtillus L. and Vaccinium vitis-idaea L. were measured. In soil, the highest levels of Cd, Pb, and Zn (HNO3 extracted and CaCl2 extracted) were detected at the Miasteczko Śląskie site. At all sites a several times lower concentration of the examined metals was determined in the fraction of soil extracted with CaCl2. Much higher Cd, Pb, Zn and Fe concentrations were found in V. myrtillus and V. vitis-idaea grown at the most polluted site (located near the zinc smelter) in comparison with cleaner areas; definitely higher bioaccumulation of these metals was found in lingonberry organs. Additionally, we observed a large capability of bilberry to accumulate Mn. Antioxidant response to heavy metal stress also differed between V. myrtillus and V. vitis-idaea. In V. myrtillus we found a positive correlation between the level of non-protein thiols and Cd and Zn concentrations, and also between proline and these metals. In V. vitis-idaea leaves an upward trend in ascorbic acid content and superoxide dismutase activity accompanied an increase in Cd, Pb, and Zn concentrations. At the same time, the increased levels of all tested metals in the leaves of V. vitis-idaea were accompanied by a decreased activity of guaiacol peroxidase. In both species increased Mn accumulation caused a decrease in antioxidant response.
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Affiliation(s)
- Marta Kandziora-Ciupa
- Department of Ecology, University of Silesia, Bankowa 9, PL 40-007, Katowice, Poland.
| | | | - Gabriela Barczyk
- Department of Ecology, University of Silesia, Bankowa 9, PL 40-007, Katowice, Poland
| | - Ryszard Ciepał
- Department of Ecology, University of Silesia, Bankowa 9, PL 40-007, Katowice, Poland
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18
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RETRACTED ARTICLE: Cadmium permeates through calcium channels and activates transcriptomic complexity in wheat roots in response to cadmium stress. Genes Genomics 2016. [DOI: 10.1007/s13258-016-0488-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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He Y, Rui H, Chen C, Chen Y, Shen Z. The role of roots in the accumulation and removal of cadmium by the aquatic plant Hydrilla verticillata. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:13308-13316. [PMID: 27023818 DOI: 10.1007/s11356-016-6505-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Accepted: 03/17/2016] [Indexed: 06/05/2023]
Abstract
Aquatic macrophytes can absorb heavy metals either from sediments via the root system, from the water phase by leaves, or from both sources. In this study, cadmium accumulation and distribution in the aquatic plant Hydrilla verticillata were investigated, with a focus on the role of roots. Results showed that leaves of H. verticillata had a higher Cd concentration than roots when intact plants were grown in sediments and solutions containing Cd. Cadmium can significantly decrease the leaf chlorophyll content, and the leaves of intact plants with roots had lower chlorophyll contents than the leaves of detached ones without roots due to the transfer effect of roots. The majority of the Cd accumulated in leaves of H. verticillata was bound to the cell walls. When roots were submerged in a solution containing Cd, with shoots in a control solution without Cd, the Cd concentrations in leaves were considerably lower than in roots. In contrast, Cd was almost undetectable in roots when the shoots were submerged in a solution containing Cd, with roots in the control solution. Compared to the leaves and stems of detached shoots without roots, the concentrations of Cd were much higher in the leaves and stems of intact plants with roots. It is suggested that the roots of intact plants absorb Cd and transfer it to leaves and that more Cd is removed from the solution by intact plants.
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Affiliation(s)
- Yan He
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Haiyun Rui
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
- Taizhou University, Taizhou, 225300, People's Republic of China
| | - Chen Chen
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Yahua Chen
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Zhenguo Shen
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
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Wang X, Shi Y, Chen X, Huang B. Screening of Cd-safe genotypes of Chinese cabbage in field condition and Cd accumulation in relation to organic acids in two typical genotypes under long-term Cd stress. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:16590-16599. [PMID: 26081776 DOI: 10.1007/s11356-015-4838-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 06/02/2015] [Indexed: 06/04/2023]
Abstract
A 65-day field experiment was conducted to select cadmium (Cd)-safe genotypes (CSGs) among 21 Chinese cabbage genotypes in a low Cd-contaminated soil (0.66 mg kg(-1)). Seven CSGs were identified based on their Cd tolerance, shoot Cd concentrations, Cd enrichment factors (EFs), and translocation factors (TFs). Then, Beijingxin3, a typical CSG, together with Qiuxiang, a typical non-CSG for comparison, was selected for a subsequent 80-day field micro-plot experiment under four levels of Cd stress to evaluate the reliability of CSG screening and the role of organic acids in Cd accumulation and tolerance. Beijingxin3 was confirmed to be safe to grow in soil with Cd level up to 3.39 mg kg(-1), with Cd accumulation in its shoots well below the permitted level, and Qiuxiang was still poor in tolerating low Cd stress (1.31 mg kg(-1)). With increasing the Cd stress, Cd accumulation and citrate concentrations increased in shoots and roots of both genotypes, and oxalate concentrations increased significantly in Beijingxin3 roots. Both oxalate and citrate concentrations were significantly positively related to Cd accumulation for Beijingxin3 roots. High accumulation in oxalate and citrate induced by Cd stress in Beijingxin3 roots could benefit its internal tolerance to long-term Cd stress with more Cd accumulation in its roots and less Cd accumulation in its shoots.
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Affiliation(s)
- Xu Wang
- State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110164, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- College of Science, Shenyang Agriculture University, Shenyang, 110866, China.
| | - Yi Shi
- State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110164, China
| | - Xin Chen
- State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110164, China
| | - Bin Huang
- State Key Laboratory of Forest and Soil Ecology, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110164, China
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Parrotta L, Guerriero G, Sergeant K, Cai G, Hausman JF. Target or barrier? The cell wall of early- and later-diverging plants vs cadmium toxicity: differences in the response mechanisms. FRONTIERS IN PLANT SCIENCE 2015; 6:133. [PMID: 25814996 PMCID: PMC4357295 DOI: 10.3389/fpls.2015.00133] [Citation(s) in RCA: 194] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Accepted: 02/19/2015] [Indexed: 05/19/2023]
Abstract
Increasing industrialization and urbanization result in emission of pollutants in the environment including toxic heavy metals, as cadmium and lead. Among the different heavy metals contaminating the environment, cadmium raises great concern, as it is ecotoxic and as such can heavily impact ecosystems. The cell wall is the first structure of plant cells to come in contact with heavy metals. Its composition, characterized by proteins, polysaccharides and in some instances lignin and other phenolic compounds, confers the ability to bind non-covalently and/or covalently heavy metals via functional groups. A strong body of evidence in the literature has shown the role of the cell wall in heavy metal response: it sequesters heavy metals, but at the same time its synthesis and composition can be severely affected. The present review analyzes the dual property of plant cell walls, i.e., barrier and target of heavy metals, by taking Cd toxicity as example. Following a summary of the known physiological and biochemical responses of plants to Cd, the review compares the wall-related mechanisms in early- and later-diverging land plants, by considering the diversity in cell wall composition. By doing so, common as well as unique response mechanisms to metal/cadmium toxicity are identified among plant phyla and discussed. After discussing the role of hyperaccumulators' cell walls as a particular case, the review concludes by considering important aspects for plant engineering.
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Affiliation(s)
- Luigi Parrotta
- Dipartimento Scienze della Vita, Università di Siena, Siena, Italy
| | - Gea Guerriero
- Environmental Research and Innovation, Luxembourg Institute of Science and Technology, Esch-sur-Alzette, Luxembourg
| | - Kjell Sergeant
- Environmental Research and Innovation, Luxembourg Institute of Science and Technology, Esch-sur-Alzette, Luxembourg
| | - Giampiero Cai
- Dipartimento Scienze della Vita, Università di Siena, Siena, Italy
| | - Jean-Francois Hausman
- Environmental Research and Innovation, Luxembourg Institute of Science and Technology, Esch-sur-Alzette, Luxembourg
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Zhou C, Zhang K, Lin J, Li Y, Chen N, Zou X, Hou X, Ma X. Physiological Responses and Tolerance Mechanisms to Cadmium in Conyza canadensis. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2015; 17:280-9. [PMID: 25397987 DOI: 10.1080/15226514.2014.898021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Experiments were conducted to examine the effects of different concentrations of Cd on the performance of the Cd accumulator Conyza canadensis. Cd accumulation in roots and leaves (roots>leaves) increased with increasing Cd concentration in soil. High Cd concentration inhibited plant growth, increased the membrane permeability of leaves, and caused a significant decline in plant height and chlorophyll [chlorophyll (Chl) a, Chl b, and total Chl] content. Leaf ultrastructural analysis of spongy mesophyllic cells revealed that excessive Cd concentrations cause adverse effects on the chloroplast and mitochondrion ultrastructures of C. canadensis. However, the activities of antioxidant enzymes, such as superoxide dismutase, catalase, peroxidase, total non-protein SH compounds, glutathione, and phytochelatin (PC) concentrations, showed an overall increase. Specifically, the increase in enzyme activities demonstrated that the antioxidant system may play an important role in eliminating or alleviating the toxicity of Cd in C. canadensis. Furthermore, results demonstrate that PC synthesis in plant cells is related to Cd concentration and that PC production levels in plants are related to the toxic effects caused by soil Cd level. These findings demonstrate the roles played by these compounds in supporting Cd tolerance in C. canadensis.
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Affiliation(s)
- Chuifan Zhou
- a College of Forestry , Fujian Agriculture and Forestry University , Fuzhou , China
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Moudouma CFM, Riou C, Gloaguen V, Saladin G. Hybrid larch (Larix x eurolepis Henry): a good candidate for cadmium phytoremediation? ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 20:1889-94. [PMID: 23288674 DOI: 10.1007/s11356-012-1419-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Accepted: 12/10/2012] [Indexed: 05/21/2023]
Abstract
Studies related to phytoremediation by conifers are still at their beginning. Thus, we investigated the ability of a hybrid larch (Larix x eurolepis) to accumulate cadmium (Cd). One-month-old clonal plantlets grown in vitro were exposed for 1 week to a high Cd concentration (1.5 mM). No significant effect was observed on root and shoot biomass, root length, and needle number as a result of Cd treatment. Leaf photosynthetic pigment content and total soluble protein concentration in roots and shoots remained unchanged compared to control plantlets. Taken together, these results suggested that hybrid larch tolerated Cd in our conditions. The high Cd concentration in shoots (200 μg Cd gram(-1) dry weight) showed the good capacity of larch to translocate Cd and thus a potential use of this species for phytoremediation. Furthermore, under our conditions, phytochelatin biosynthesis pathway was slightly stimulated, suggesting that this pathway did not reach the threshold and/or another mechanism of Cd storage may be involved to explain larch tolerance to Cd.
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Affiliation(s)
- Chris Fabien Moussavou Moudouma
- Laboratoire de Chimie des Substances Naturelles (EA 1069), Faculté des Sciences et Techniques, Université de Limoges, 123 avenue Albert Thomas, 87060, Limoges Cedex, France
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