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Yang W, Luo L, Bostick BC, Wiita E, Cheng Y, Shen Y. Effect of combined arsenic and lead exposure on their uptake and translocation in Indian mustard. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 274:116549. [PMID: 33529900 DOI: 10.1016/j.envpol.2021.116549] [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: 10/14/2020] [Revised: 12/26/2020] [Accepted: 01/18/2021] [Indexed: 06/12/2023]
Abstract
Phytoremediation makes use of hyperaccumulating plants to remove potentially toxic elements (PTEs) from soil selectively. Most researches examining hyperaccumulators focused on how they act on a single PTE contaminant. However, there is more than one kind of PTEs in most contaminated soils. Phytoremediation approaches could be less effective in environments containing multiple PTEs contaminants. Here we examine arsenic (As) and lead (Pb) accumulation in Indian Mustard (Brassica juncea) from solutions with one or both pollutants. Indian mustard accumulates As or Pb when exposed in the single liquid exposure of As or Pb, and the highest concentrations of As and Pb in Indian Mustard reach 1,786 mg/kg and 47,200 mg/kg, respectively. But the absorption efficiencies of As and Pb decrease (by >90% for As, and ∼10-30% for Pb) when both As and Pb are present. The translocation of As and Pb from the root to leaf is also impeded by 36%-88% for As and 55-85% for Pb when treated with both PTEs. In As and Pb co-treatment, significant negative correlations between As (V) and P and between Pb and other elements (including K, Mg and Ca) were found in Indian mustard. X-ray absorption near edge (XANES) spectroscopy and subcellular extraction experiments indicate that much of the accumulated Pb bound within lead phosphate particles, and often located within the cell wall. Pb could decrease the percentage of water-soluble As and increase protein combined As in subcellular levels within Indian mustard. Based on these data, we suggest that the competition between Pb and monovalent and divalent nutrients (e.g., Ca(II), Mg(II) and K(I)), and the formation of lead phosphates within cell walls play critical roles in decreasing As and Pb co-uptake efficiencies for Indian mustard.
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Affiliation(s)
- Wenlei Yang
- National Research Center of Geoanalysis, Chinese Academy of Geological Sciences, Beijing, 100037, China; China University of Geosciences, Beijing, 100083, China
| | - Liqiang Luo
- National Research Center of Geoanalysis, Chinese Academy of Geological Sciences, Beijing, 100037, China
| | - Benjamin C Bostick
- Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York, NY, 10964, USA
| | - Elizabeth Wiita
- Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York, NY, 10964, USA; Barnard College, Department of Chemistry, New York, NY, 10027, USA
| | - Youfa Cheng
- Key Laboratory of Plant Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, China
| | - Yating Shen
- National Research Center of Geoanalysis, Chinese Academy of Geological Sciences, Beijing, 100037, China; Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York, NY, 10964, USA; Key Laboratory of Eco-Geochemistry, Ministry of Natural Resources of China, Beijing, 100037, China.
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Zhou J, Zhang Z, Zhang Y, Wei Y, Jiang Z. Effects of lead stress on the growth, physiology, and cellular structure of privet seedlings. PLoS One 2018; 13:e0191139. [PMID: 29494617 PMCID: PMC5832220 DOI: 10.1371/journal.pone.0191139] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 12/28/2017] [Indexed: 11/19/2022] Open
Abstract
In this study, we investigated the effects of different lead (Pb) concentrations (0, 200, 600, 1000, 1400 mg kg-1 soil) on the growth, ion enrichment in the tissues, photosynthetic and physiological characteristics, and cellular structures of privet seedlings. We observed that with the increase in the concentrations of Pb, the growth of privet seedlings was restricted, and the level of Pb ion increased in the roots, stem, and leaves of the seedlings; however, most of the ions were concentrated in the roots. Moreover, a decreasing trend was observed for chlorophyll a, chlorophyll b, total chlorophyll, net photosynthesis (Pn), transpiration rate (Tr), stomatal conductance (Gs), sub-stomatal CO2 concentration (Ci), maximal photochemical efficiency (Fv/Fm), photochemical quenching (qP), and quantum efficiency of photosystem II (ΦPSII). In contrast, the carotene levels, minimum fluorescence (F0), and non-photochemical quenching (qN) showed an increasing trend. Under Pb stress, the chloroplasts were swollen and deformed, and the thylakoid lamellae were gradually expanded, resulting in separation from the cell wall and eventual shrinkage of the nucleus. Using multiple linear regression analysis, we found that the content of Pb in the leaves exerted the maximum effect on the seedling growth. We observed that the decrease in photosynthetic activation energy, increase in pressure because of the excess activation energy, and decrease in the transpiration rate could result in maximum effect on the photosynthetic abilities of the seedlings under Pb stress. Our results should help in better understanding of the effects of heavy metals on plants and in assessing their potential for use in bioremediation.
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Affiliation(s)
- Jian Zhou
- School of Horticulture and Landscape Architecture, Henan Institute of Science and Technology, Xinxiang Henan, China
- Research Institute of Forestry Chinese Academy of Forestry, Beijing, China
| | - Zhaopei Zhang
- Experimental Center of Henan Institute of Science and Technology, Xinxiang Henan, China
| | - Yichuan Zhang
- School of Horticulture and Landscape Architecture, Henan Institute of Science and Technology, Xinxiang Henan, China
| | - Yuan Wei
- Research Institute of Forestry Chinese Academy of Forestry, Beijing, China
| | - Zeping Jiang
- Research Institute of Forestry Chinese Academy of Forestry, Beijing, China
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Inoue Y, Hasegawa S, Ban S, Yamada T, Date Y, Mizutani H, Nakata S, Tanaka M, Hirashima N. ZIP2 protein, a zinc transporter, is associated with keratinocyte differentiation. J Biol Chem 2014; 289:21451-62. [PMID: 24936057 DOI: 10.1074/jbc.m114.560821] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Zinc is essential for the proper functioning of various enzymes and transcription factors, and its homeostasis is rigorously controlled by zinc transporters (SLC39/ZIP, importers; SLC30/ZnT, exporters). Skin disease is commonly caused by a zinc deficiency. Dietary and inherited zinc deficiencies are known to cause alopecia and the development of vesicular or pustular dermatitis. A previous study demonstrated that zinc played crucial roles in the survival of keratinocytes and their unique functions. High levels of zinc have been detected in the epidermis. Epidermal layers are considered to use a mechanism that preferentially takes in zinc, which is involved with the unique functions of keratinocytes. However, few studies have investigated the ZIP (Zrt- and Irt-like protein) proteins specifically expressed in keratinocytes and their functions. We explored the ZIP proteins specifically expressed in the epidermis and analyzed their functions. Gene expression analysis showed that the expression of ZIP2 was consistently higher in the epidermis than in the dermis. Immunohistochemistry analysis confirmed the expression of ZIP2 in differentiating keratinocytes. The expression of ZIP2 was found to be up-regulated by the differentiation induction of cultured keratinocytes. Intracellular zinc levels were decreased in keratinocytes when ZIP2 was knocked down by siRNA, and this subsequently inhibited the differentiation of keratinocytes. Moreover, we demonstrated that ZIP2 knockdown inhibited the normal formation of a three-dimensional cultured epidermis. Taken together, the results of this study suggest that ZIP2, a zinc transporter expressed specifically in the epidermis, and zinc taken up by ZIP2 are necessary for the differentiation of keratinocytes.
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Affiliation(s)
- Yu Inoue
- From the Research Laboratories, Nippon Menard Cosmetic Co., Ltd., 2-7 Torimicho, Nishi-Ku, Nagoya, Aichi 451-0071, Japan, the Department of Cellular Biophysics, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1, Tanabedori, Mizuho-Ku, Nagoya, Aichi 467-8603, Japan,
| | - Seiji Hasegawa
- From the Research Laboratories, Nippon Menard Cosmetic Co., Ltd., 2-7 Torimicho, Nishi-Ku, Nagoya, Aichi 451-0071, Japan, the Departments of Dermatology and the Menard Collaborative Research Chair, Nagoya University Graduate School of Medicine, 65 Tsurumaicho, Showa-Ku, Nagoya, Aichi 466-8560, Japan
| | - Sadanori Ban
- From the Research Laboratories, Nippon Menard Cosmetic Co., Ltd., 2-7 Torimicho, Nishi-Ku, Nagoya, Aichi 451-0071, Japan
| | - Takaaki Yamada
- From the Research Laboratories, Nippon Menard Cosmetic Co., Ltd., 2-7 Torimicho, Nishi-Ku, Nagoya, Aichi 451-0071, Japan, the Departments of Dermatology and Applied Cell and Regenerative Medicine, Fujita Health University School of Medicine, 1-98 Kutsukakecho, Toyoake, Nagoya, Aichi 470-1192, Japan, and
| | - Yasushi Date
- From the Research Laboratories, Nippon Menard Cosmetic Co., Ltd., 2-7 Torimicho, Nishi-Ku, Nagoya, Aichi 451-0071, Japan
| | - Hiroshi Mizutani
- From the Research Laboratories, Nippon Menard Cosmetic Co., Ltd., 2-7 Torimicho, Nishi-Ku, Nagoya, Aichi 451-0071, Japan
| | - Satoru Nakata
- From the Research Laboratories, Nippon Menard Cosmetic Co., Ltd., 2-7 Torimicho, Nishi-Ku, Nagoya, Aichi 451-0071, Japan
| | - Masahiko Tanaka
- the Department of Cellular Biophysics, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1, Tanabedori, Mizuho-Ku, Nagoya, Aichi 467-8603, Japan
| | - Naohide Hirashima
- the Department of Cellular Biophysics, Graduate School of Pharmaceutical Sciences, Nagoya City University, 3-1, Tanabedori, Mizuho-Ku, Nagoya, Aichi 467-8603, Japan
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Gupta DK, Huang HG, Corpas FJ. Lead tolerance in plants: strategies for phytoremediation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2013; 20:2150-61. [PMID: 23338995 DOI: 10.1007/s11356-013-1485-4] [Citation(s) in RCA: 127] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Accepted: 01/09/2013] [Indexed: 05/21/2023]
Abstract
Lead (Pb) is naturally occurring element whose distribution in the environment occurs because of its extensive use in paints, petrol, explosives, sludge, and industrial wastes. In plants, Pb uptake and translocation occurs, causing toxic effects resulting in decrease of biomass production. Commonly plants may prevent the toxic effect of heavy metals by induction of various celular mechanisms such as adsorption to the cell wall, compartmentation in vacuoles, enhancement of the active efflux, or induction of higher levels of metal chelates like a protein complex (metallothioneins and phytochelatins), organic (citrates), and inorganic (sulphides) complexes. Phyotochelains (PC) are synthesized from glutathione (GSH) and such synthesis is due to transpeptidation of γ-glutamyl cysteinyl dipeptides from GSH by the action of a constitutively present enzyme, PC synthase. Phytochelatin binds to Pb ions leading to sequestration of Pb ions in plants and thus serves as an important component of the detoxification mechanism in plants. At cellular level, Pb induces accumulation of reactive oxygen species (ROS), as a result of imbalanced ROS production and ROS scavenging processes by imposing oxidative stress. ROS include superoxide radical (O2(.-)), hydrogen peroxide (H2O2) and hydroxyl radical ((·)OH), which are necessary for the correct functioning of plants; however, in excess they caused damage to biomolecules, such as membrane lipids, proteins, and nucleic acids among others. To limit the detrimental impact of Pb, efficient strategies like phytoremediation are required. In this review, it will discuss recent advancement and potential application of plants for lead removal from the environment.
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Affiliation(s)
- D K Gupta
- Departamento de Bioquímica, Biología Cellular y Molecular de Plantas, Estación Experimental del Zaidín, CSIC, Prof. Albareda No. 1, Granada 18008, Spain.
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Wu B, Becker JS. Imaging techniques for elements and element species in plant science. Metallomics 2012; 4:403-16. [DOI: 10.1039/c2mt00002d] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Zhang J, Tian S, Lu L, Shohag MJI, Liao H, Yang X. Lead tolerance and cellular distribution in Elsholtzia splendens using synchrotron radiation micro-X-ray fluorescence. JOURNAL OF HAZARDOUS MATERIALS 2011; 197:264-271. [PMID: 22014441 DOI: 10.1016/j.jhazmat.2011.09.085] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2011] [Revised: 09/19/2011] [Accepted: 09/22/2011] [Indexed: 05/31/2023]
Abstract
Hydroponic experiments were conducted to investigate the tolerance and spatial distribution of lead (Pb) in Elsholtzia splendens-a copper (Cu) accumulator plant using synchrotron-based micro-X-ray fluorescence. According to chlorophyll concentration and chlorophyll fluorescence parameters, E. splendens displayed certain tolerance at 100 μM Pb treatment. Lead concentration in roots, stems and leaves of E. splendens reached 45,183.6, 1657.6, and 380.9 mg kg(-1), respectively. Pb was mostly accumulated in the roots, and there were also high concentrations of Pb been transported into stems and leaves. Micro-XRF analysis of the stem and leaf cross section revealed that Pb was mostly restricted in the vascular bundles and epidermis tissues of both stem and leaf of E. splendens. The correlation between distribution of K, Ca, Zn and Pb were analyzed. There were significant positive correlations (P<0.01) among Pb and Ca, K, Zn distribution both in stem and leaf of E. splendens. However, among the three elements, Ca shared the most similar distribution pattern and the highest correlation coefficients with Pb in both stem and leaf cross section of E. splendens. This suggests that Ca may play an important role in Pb accumulation in stem and leaf of E. splendens.
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Affiliation(s)
- Jie Zhang
- MOE Key Laboratory of Environment Remediation and Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China
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Tian S, Lu L, Yang X, Webb SM, Du Y, Brown PH. Spatial imaging and speciation of lead in the accumulator plant Sedum alfredii by microscopically focused synchrotron X-ray investigation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2010; 44:5920-6. [PMID: 20608726 DOI: 10.1021/es903921t] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Sedum alfredii (Crassulaceae), a species native to China, has been characterized as a Zn/Cd cohyperaccumulator and Pb accumulator though the mechanisms of metal tolerance and accumulation are largely unknown. Here, the spatial distribution and speciation of Pb in tissues of the accumulator plant was investigated using synchrotron-based X-ray microfluorescence and powder Extended X-ray absorption fine structure (EXAFS) spectroscopy. Lead was predominantly restricted to the vascular bundles of both leaf and stem of the accumulator. Micro-XRF analysis revealed that Pb distributed predominantly within the areas of vascular bundles, and a positive correlation between the distribution patterns of S and Pb was observed. The dominant chemical form of Pb (>60%) in tissues of both accumulating (AE) and nonaccumulating ecotype (NAE) S. alfredii was similar to prepared Pb-cell wall compounds. However, the percentage of the Pb-cell wall complex is lower in the stem and leaf of AE, and a small amount of Pb appeared to be associated with SH-compounds. These results suggested a very low mobility of Pb out of vascular bundles, and that the metal is largely retained in the cell walls during transportation in plants of S. alfredii.
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Affiliation(s)
- Shengke Tian
- MOE Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Science, Zhejiang University, Hangzhou 310029, China
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Affiliation(s)
- Kouichi Tsuji
- Department of Applied Chemistry & Bioengineering, Graduate School of Engineering, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka, 558-8585, Japan
| | - Kazuhiko Nakano
- Department of Applied Chemistry & Bioengineering, Graduate School of Engineering, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka, 558-8585, Japan
| | - Yoshio Takahashi
- Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Kouichi Hayashi
- Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Chul-Un Ro
- Department of Chemistry, Inha University, 253 Yonghyun-dong, Nam-gu, Inceon, 402-751, Korea
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