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Andrade Júnior WV, de Oliveira Neto CF, dos Santos Filho BG, do Amarante CB, Cruz ED, Okumura RS, Barbosa AVC, de Sousa DJP, Teixeira JSS, Botelho ADS. Effect of cadmium on young plants of Virola surinamensis. AOB PLANTS 2019; 11:plz022. [PMID: 31114669 PMCID: PMC6524489 DOI: 10.1093/aobpla/plz022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Accepted: 03/31/2019] [Indexed: 05/09/2023]
Abstract
The steady increase in cadmium (Cd) levels in the environment from anthropogenic actions has contributed to environmental degradation. Virola surinamensis is a forest species that has desirable characteristics such as deep and dense roots, relatively rapid growth and high biomass production to remedy contaminated environments by Cd. The aim of this study was to assess the physiological responses and the phytoextraction and tolerance capacity of young plants of V. surinamensis submitted to Cd concentrations. The experimental design was a completely randomized design with five Cd concentrations (0, 15, 30, 45 and 60 mg L-1) for 60 days. Leaf water potential (Ψpd), stomatal conductance (gs) and transpiration (E) reduced in plants exposed to Cd. Lower values of maximum photochemical efficiency of photosystem II (Fv/Fm), electron transport rate (ETR) and photochemical quenching coefficient (qP) were accompanied by reduction of photosynthesis (A) with increasing concentrations of Cd, although the non-photochemical quenching coefficient (NPQ), and intercellular CO2 concentration (Ci) showed increase. Instantaneous water-use efficiency (A/E), net photosynthesis to intercellular CO2 concentration ratio (A/Ci) and total chlorophyll (Chl) reduced with increasing levels of Cd. Cadmium concentrations increased in different plant tissues (root > stem > leaf). The tolerance index (TI) indicated that V. surinamensis presented medium and high tolerance to Cd. The results of bioconcentration factor (BCF) and translocation factor (TF) showed low plant efficacy in Cd phytoextraction and suggest that V. surinamensis may be promising for phytostabilization of Cd.
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Affiliation(s)
- Waldemar Viana Andrade Júnior
- Institute of Agronomists Sciences, Laboratory of Biodiversity Studies of Upper Plants, Federal Rural University of the Amazon, Campus Belém, Pará, Brazil
| | - Cândido Ferreira de Oliveira Neto
- Institute of Agronomists Sciences, Laboratory of Biodiversity Studies of Upper Plants, Federal Rural University of the Amazon, Campus Belém, Pará, Brazil
| | - Benedito Gomes dos Santos Filho
- Institute of Agronomists Sciences, Laboratory of Biodiversity Studies of Upper Plants, Federal Rural University of the Amazon, Campus Belém, Pará, Brazil
| | - Cristine Bastos do Amarante
- Museu Paraense Emílio Goeldi (MPEG), Belém, Pará, Brazil
- Pará/Institute of Exact and Natural Sciences, Federal University of Pará, Belém, Pará, Brazil
| | - Eniel David Cruz
- Brazilian Agricultural Research Corporation (Embrapa), Belem, Pará, Brazil
| | - Ricardo Shigueru Okumura
- Institute of Agronomists Sciences, Federal Rural University of the Amazon, Campus Parauapebas, Pará, Brazil
- Corresponding author’s e-mail address:
| | | | - Diana Jhulia Palheta de Sousa
- Institute of Agronomists Sciences, Laboratory of Biodiversity Studies of Upper Plants, Federal Rural University of the Amazon, Campus Belém, Pará, Brazil
| | - Jéssica Suellen Silva Teixeira
- Institute of Agronomists Sciences, Laboratory of Biodiversity Studies of Upper Plants, Federal Rural University of the Amazon, Campus Belém, Pará, Brazil
| | - Anderson de Santana Botelho
- Museu Paraense Emílio Goeldi (MPEG), Belém, Pará, Brazil
- Pará/Institute of Exact and Natural Sciences, Federal University of Pará, Belém, Pará, Brazil
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Insights into Heavy Metals Leakage in Chelator-Induced Phytoextraction of Pb- and Tl-Contaminated Soil. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16081328. [PMID: 31013864 PMCID: PMC6518378 DOI: 10.3390/ijerph16081328] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 03/31/2019] [Accepted: 04/10/2019] [Indexed: 11/18/2022]
Abstract
Chelators including DTPA (diethylene triamine pentaacetic acid) and oxalic acid were selected for inducing phytoextraction of heavy metals (HMs) from Pb-, Tl-, and Pb-Tl- contaminated soil, in which heavy metals leakage was highly remarkable. Results showed that compared with the control group without chelating agent under planting conditions, the extraction efficiency (i.e., uptake coefficient) of Pb, Tl increased by 86%, 43% from Pb-Tl- contaminated soil in the presence of oxalic acid, and there was no significant change in heavy metal leakage under rainfall conditions. It was the best phytoremediation scheme in this work. Under rainfall conditions, the HMs concentration in the leachate showed a linear decreasing trend. Acid rain promoted the leakage of heavy metals, and the average leached amount of Tl increased by 1.47 times under acid rain conditions. However, for Pb, DTPA was the main influencing factor, followed by acid rain.
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Li Z, Zhang R, Zhang H. Effects of plant growth regulators (DA-6 and 6-BA) and EDDS chelator on phytoextraction and detoxification of cadmium by Amaranthus hybridus Linn. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2018; 20:1121-1128. [PMID: 30156916 DOI: 10.1080/15226514.2017.1365348] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
In this study, pot experiments were carried out to investigative the effects of growth-promoting hormone diethyl aminoethyl hexanoate (DA-6), 6-Benzylaminopurine (6-BA), and chelator [S,S]-Ethylenediaminedisuccinic acid (EDDS) when applied to soil contaminated with cadmium (Cd). The substances were applied alone and in combination to assess their impact on biomass, Cd phytoextraction, subcellular distribution, and chemical forms in Cd hyperaccumulator Amaranthus hybridus Linn. (A. hybridus). Results showed that the treatment of EDDS alone inhibited plant growth, and raised the Cd concentration in the plant shoot and root. Treatments with DA-6 and 6-BA combined with EDDS alleviated the negative effect of EDDS on plant growth, resulting in a synergistic effect on Cd phytoaccumulation and translocation. At the subcellular level, DA-6 and 6-BA detoxified the Cd toxicity in the plant by retaining the Cd in the cell wall. On the distribution of the chemical form of Cd in plant shoot, DA-6 and 6-BA significantly decreased Cd mobility in the plant compared to EDDS. These results confirmed that combining DA-6 and 6-BA with EDDS can counteract the adverse effect of EDDS on plant growth. The treatment of 5.0 mmol kg-1 EDDS + 1 μM DA-6 was optimal for improving the remediation of A. hybridus Linn. growing in Cd contaminated soil.
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Affiliation(s)
- Zhangwei Li
- a Institute of Chemistry and Environment Engineering, Hanshan Normal University , Chaozhou , PR China
| | - Rushan Zhang
- a Institute of Chemistry and Environment Engineering, Hanshan Normal University , Chaozhou , PR China
| | - Huimin Zhang
- a Institute of Chemistry and Environment Engineering, Hanshan Normal University , Chaozhou , PR China
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Zhou L, Zhao Y, Wang S. Cadmium transfer and detoxification mechanisms in a soil-mulberry-silkworm system: phytoremediation potential. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:18031-9. [PMID: 26169822 DOI: 10.1007/s11356-015-5011-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Accepted: 07/01/2015] [Indexed: 05/06/2023]
Abstract
Phytoremediation has been proven to be an environmentally sound alternative for the recovery of contaminated soils, and the economic profit that comes along with the process might stimulate its field use. This study investigated cadmium (Cd) transfer and detoxification mechanisms in a soil-mulberry-silkworm system to estimate the suitability of the mulberry and silkworm as an alternative method for the remediation of Cd-polluted soil; it also explored the underlying mechanisms regulating the trophic transfer of Cd. The results show that both the mulberry and silkworm have high Cd tolerance. The transfer factor suggests that the mulberry has high potential for Cd extraction from polluted soil. The subcellular distribution and chemical forms of Cd in mulberry leaves show that cell wall deposition and vacuolar compartmentalization play important role in Cd tolerance. In the presence of increasing Cd concentrations in silkworm food, detoxification mechanisms (excretion and homeostasis) were activated so that excess Cd was excreted in fecal balls, and metallothionein levels in the mid-gut, the posterior of the silk gland, and the fat body of silkworms were enhanced. And, the Cd concentrations in silk are at a low level, ranging from 0.02 to 0.21 mg kg(-1). Therefore, these mechanisms of detoxification can regulate Cd trophic transfer, and mulberry planting and silkworm breeding has high phytoremediation potential for Cd-contaminated soil.
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Affiliation(s)
- Lingyun Zhou
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No.19, Xinjiekouwai Street, Haidian District, Beijing, 100875, China
- Fujian Province Key Laboratory of Modern Analytical Science and Separation Technology, College of Chemistry and Environment, Minnan Normal University, Zhangzhou, 363000, China
| | - Ye Zhao
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No.19, Xinjiekouwai Street, Haidian District, Beijing, 100875, China.
| | - Shuifeng Wang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, No.19, Xinjiekouwai Street, Haidian District, Beijing, 100875, China
- Analytical Testing Center, Beijing Normal University, Beijing, 100875, China
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