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Sun J, Jia Q, Li Y, Dong K, Xu S, Ren Y, Zhang T, Chen J, Shi N, Fu S. Effect of Arbuscular Mycorrhiza Fungus Diversispora eburnea Inoculation on Lolium perenne and Amorpha fruticosa Growth, Cadmium Uptake, and Soil Cadmium Speciation in Cadmium-Contaminated Soil. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:795. [PMID: 36613117 PMCID: PMC9819954 DOI: 10.3390/ijerph20010795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 12/18/2022] [Accepted: 12/23/2022] [Indexed: 06/17/2023]
Abstract
Cadmium (Cd) pollution has become aggravated during the past decades of industrialization, severely endangering human health through its entry into the food chain. While it is well understood that arbuscular mycorrhizal fungi (AMF) have a strong ability to regulate plant growth and Cd uptake, studies investigating how they affect soil Cd speciation and influence Cd uptake are limited. We designed a pot experiment comprising two AMF-inoculant groups (inoculation with Diversispora eburnea or no inoculation), three Cd concentration levels (0, 5, and 15 mg/kg), and two plant species (Lolium perenne and Amorpha fruticosa) to study the effect of AMF Diversispora eburnea on plant growth, Cd uptake, and Cd speciation in the soil. The results revealed that L. perenne exhibited higher productivity and greater Cd uptake than A. fruticosa, regardless of AMF D. eburnea inoculation. However, AMF D. eburnea significantly altered soil Cd speciation by increasing the proportion of exchangeable Cd and decreasing residual Cd, resulting in Cd enrichment in the plant root organs and the elimination of Cd from the polluted soils. Our experiments demonstrate that inoculating plants with AMF D. eburnea is an effective alternative strategy for remediating Cd-contaminated soil.
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Affiliation(s)
- Jiahua Sun
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, China
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Henan University, Ministry of Education, Kaifeng 475004, China
| | - Qiong Jia
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, China
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Henan University, Ministry of Education, Kaifeng 475004, China
| | - Yi Li
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, China
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Henan University, Ministry of Education, Kaifeng 475004, China
| | - Kanglong Dong
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, China
| | - Shuai Xu
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, China
| | - Yanan Ren
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, China
| | - Ting Zhang
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, China
| | - Jiayuan Chen
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, China
| | - Nannan Shi
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, China
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Henan University, Ministry of Education, Kaifeng 475004, China
| | - Shenglei Fu
- College of Geography and Environmental Science, Henan University, Kaifeng 475004, China
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions, Henan University, Ministry of Education, Kaifeng 475004, China
- Dabieshan National Observation and Research Field Station of Forest Ecosystem, Henan University, Kaifeng 475004, China
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Fan T, Liu R, Pan D, Liu Y, Ye W, Lu H, Kianpoor Kalkhajeh Y. Accumulation and subcellular distribution of cadmium in rygegrass induced by Aspergillus niger TL-F2 and Aspergillus flavus TL-F3. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2021; 24:263-270. [PMID: 34101523 DOI: 10.1080/15226514.2021.1932734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Although plant growth-promoting fungi can greatly accelerate the ryegrass bioaccumulation of cadmium (Cd), the underlying mechanisms are not yet well documented. Therefore, we performed a 20-days hydroponic experiment to investigate the effects of Aspergillus niger TL-F2 (A. niger TL-F2) and Aspergillus flavus TL-F3 (A. flavus TL-F3) on accumulation/subcellular distribution of Cd by annual ryegrass Dongmu 70 at different Cd concentrations (0, 2.5, and 5 mg L-1). Results indicated that both fungal strains promoted ryegrass biomass/growth by about 60%. Furthermore, we found that ryegrass roots (17.8-37.1 μg pot-1) had a significantly higher capability for Cd uptake than the shoots (1.66-5.45 μg pot-1) (p < 0.05). Of total Cd in ryegrass plants, 44-67% was in soluble form, 24-37% was in cell wall, and 8.5-25.5% was in organelles. Compared with non-fungus ryegrass, cell wall and soluble Cd fractions in fungus-inoculated roots increased and decreased by 13.5-44% and 21.5-26.4%, respectively. Besides, fungus inoculation generally increased the content of cell wall and soluble Cd fractions in ryegrass shoots. Altogether, the study concludes that inoculation of fungus in ryegrass is a promising approach to improve phytoremediation of Cd contaminated environments.Novelty statement Previous study by Han et al. (2018) examined the resistance of ryegrass plant to Cd stress after its inoculation with Aspergillus aculeatus. In this study, using a hydroponic experiment, we examined the effects of co-application of two species of Aspergillus fungi. i.e. A. niger TL-F2 and A. flavus TL-F3 on ryegrass growth/biomass, Cd absorption by ryegrass shoots and roots, and subcellular distribution of Cd in ryegrass roots and shoots.
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Affiliation(s)
- Ting Fan
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China
| | - Ru Liu
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China
| | - Dandan Pan
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China
| | - Yalou Liu
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China
| | - Wenling Ye
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China
| | - Hongjuan Lu
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China
| | - Yusef Kianpoor Kalkhajeh
- Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei, China
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Huang D, Yang Y, Deng R, Gong X, Zhou W, Chen S, Li B, Wang G. Remediation of Cd-Contaminated Soil by Modified Nanoscale Zero-Valent Iron: Role of Plant Root Exudates and Inner Mechanisms. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18115887. [PMID: 34070880 PMCID: PMC8197846 DOI: 10.3390/ijerph18115887] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 05/18/2021] [Accepted: 05/19/2021] [Indexed: 11/28/2022]
Abstract
In this study, the role of exogenous root exudates and microorganisms was investigated in the application of modified nanoscale zero-valent iron (nZVI) for the remediation of cadmium (Cd)-contaminated soil. In this experiment, citric acid (CA) was used to simulate root exudates, which were then added to water and soil to simulate the pore water and rhizosphere environment. In detail, the experiment in water demonstrated that low concentration of CA facilitated Cd removal by nZVI, while the high concentration achieved the opposite. Among them, CA can promote the adsorption of Cd not only by direct complexation with heavy metal ions, but also by indirect effect to promote the production of iron hydroxyl oxides which has excellent heavy metal adsorption properties. Additionally, the H+ dissociated from CA posed a great influence on Cd removal. The situation in soil was similar to that in water, where low concentrations of CA contributed to the immobilization of Cd by nZVI, while high concentrations promoted the desorption of Cd and the generation of CA–Cd complexes which facilitated the uptake of Cd by plants. As the reaction progressed, the soil pH and cation exchange capacity (CEC) increased, while organic matter (OM) decreased. Meanwhile, the soil microbial community structure and diversity were investigated by high-throughput sequencing after incubation with CA and nZVI. It was found that a high concentration of CA was not conducive to the growth of microorganisms, while CMC had the effect of alleviating the biological toxicity of nZVI.
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Affiliation(s)
- Danlian Huang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; (Y.Y.); (R.D.); (W.Z.); (S.C.); (B.L.); (G.W.)
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
- Correspondence:
| | - Yunhe Yang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; (Y.Y.); (R.D.); (W.Z.); (S.C.); (B.L.); (G.W.)
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Rui Deng
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; (Y.Y.); (R.D.); (W.Z.); (S.C.); (B.L.); (G.W.)
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Xiaomin Gong
- College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China;
| | - Wei Zhou
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; (Y.Y.); (R.D.); (W.Z.); (S.C.); (B.L.); (G.W.)
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Sha Chen
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; (Y.Y.); (R.D.); (W.Z.); (S.C.); (B.L.); (G.W.)
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Bo Li
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; (Y.Y.); (R.D.); (W.Z.); (S.C.); (B.L.); (G.W.)
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
| | - Guangfu Wang
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; (Y.Y.); (R.D.); (W.Z.); (S.C.); (B.L.); (G.W.)
- Key Laboratory of Environmental Biology and Pollution Control, Hunan University, Ministry of Education, Changsha 410082, China
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Hassan MJ, Geng W, Zeng W, Raza MA, Khan I, Iqbal MZ, Peng Y, Zhu Y, Li Z. Diethyl Aminoethyl Hexanoate Priming Ameliorates Seed Germination via Involvement in Hormonal Changes, Osmotic Adjustment, and Dehydrins Accumulation in White Clover Under Drought Stress. FRONTIERS IN PLANT SCIENCE 2021; 12:709187. [PMID: 34394164 PMCID: PMC8358406 DOI: 10.3389/fpls.2021.709187] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 07/05/2021] [Indexed: 05/03/2023]
Abstract
Drought is a serious outcome of climate change reducing the productivity of forage species under arid and semi-arid conditions worldwide. Diethyl aminoethyl hexanoate (DA-6), a novel plant growth regulator, has proven to be involved in the amelioration of critical physiological functions in many agricultural crops under various abiotic stresses, but the role of the DA-6 in improving seed germination has never been investigated under drought stress. The present study was carried out to elucidate the impact of the DA-6 priming on seeds germination of white clover under drought stress. Results showed that seed priming with the DA-6 significantly mitigated the drought-induced reduction in germination percentage, germination vigor, germination index, seed vigor index, root length, shoot length, and fresh weight after 7 days of seed germination. The DA-6 significantly increased the endogenous indole-3-acetic acid, gibberellin, and cytokinin content with marked reduction in abscisic acid content in seedlings under drought stress. In addition, the DA-6 significantly accelerated starch catabolism by enhancing the activities of hydrolases contributing toward enhanced soluble sugars, proline content and ameliorated the antioxidant defense system to enhance the ability of reactive oxygen species scavenging under drought stress. Furthermore, exogenous DA-6 application significantly increased dehydrins accumulation and upregulated transcript levels of genes encoding dehydrins (SK2, Y2SK, or DHNb) during seeds germination under water deficient condition. These findings suggested that the DA-6 mediated seeds germination and drought tolerance associated with changes in endogenous phytohormones resulting in increased starch degradation, osmotic adjustment, antioxidants activity, and dehydrins accumulation during seed germination under water deficient condition.
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Affiliation(s)
- Muhammad Jawad Hassan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Wan Geng
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Weihang Zeng
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Muhammad Ali Raza
- College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - Imran Khan
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Muhammad Zafar Iqbal
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Yan Peng
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Yongqun Zhu
- Soil and Fertilizer Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu, China
- *Correspondence: Yongqun Zhu,
| | - Zhou Li
- College of Grassland Science and Technology, Sichuan Agricultural University, Chengdu, China
- Zhou Li,
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Chemical Forms and Health Risk of Cadmium in Water Spinach Grown in Contaminated Soil with an Increased Level of Phosphorus. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:ijerph16183322. [PMID: 31505878 PMCID: PMC6765929 DOI: 10.3390/ijerph16183322] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 09/04/2019] [Accepted: 09/05/2019] [Indexed: 11/17/2022]
Abstract
(1) Background: Even in croplands with a low concentration of cadmium (Cd), there is still a risk for planting crops because of the high accumulation capacity of some leafy vegetables. (2) Methods: In this study, water spinach was planted in four main soil series (Wa, Eh, Tk, and Yu) in central Taiwan, which were spiked with Cd. The soil available phosphorous content was increased to 10–17 mg/kg, and the accumulation and developed chemical forms of Cd were analyzed. (3) Results: The experimental results showed that addition of phosphorous to Wa and Eh promoted the growth of water spinach. Accumulation and upward translocation of Cd were also increased in the phosphorus treatment compared with the control. The addition of phosphorus increased the percentage of Cd compartmentalized in undissolved Cd phosphate, which revealed that the mobility and toxicity of Cd were reduced in the phosphorus treatment. However, most of the water spinach was not edible because the vegetable-induced hazard quotient, which was calculated using three methods, showed hazardous potential in general.
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Wen D, Li Y, He L, Zhang C. Transcriptome analysis reveals the mechanism by which spraying diethyl aminoethyl hexanoate after anthesis regulates wheat grain filling. BMC PLANT BIOLOGY 2019; 19:327. [PMID: 31324148 PMCID: PMC6642493 DOI: 10.1186/s12870-019-1925-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 07/05/2019] [Indexed: 05/06/2023]
Abstract
BACKGROUND Diethyl aminoethyl hexanoate (DA-6), a plant growth regulator, has many beneficial effects on agricultural production. DA-6 has been applied to many plant species, but the molecular mechanism by which spraying DA-6 after anthesis regulates wheat grain filling is still unknown. RESULTS In this study, we used four DA-6 concentrations: C0 (0 g/L), C2 (2 g/L), C4 (4 g/L), and C6 (6 g/L). The results showed that C4 and C6 led to a significantly higher 1000-grain weight and seed protein content than C0 during two wheat growing seasons. We then subjected samples at 24 days after anthesis (at which point the grain weight increased rapidly) to transcriptome analysis. Flag leaf (L), seed (S), and stem (T) samples under C6 and C0 were used for RNA-seq. The seed samples under C6 compared with C0 (S6vsS0) presented the most differentially expressed genes (DEGs; 2164). Plant hormone signal transduction (p = 1.97 × 10- 4), protein processing in the endoplasmic reticulum (ER; p = 9.04 × 10- 11) and starch and sucrose metabolism (p = 1.90 × 10- 10) pathways were the most markedly enriched pathways in the flag leaves, stems, and seeds, respectively. DEGs involved in sucrose synthesis in the flag leaves, protein processing in ER in the stems, and starch synthesis and protein processing in ER in the seeds were significantly upregulated under C6 compared with C0. CONCLUSIONS Overall, we propose a model for spraying DA-6 after anthesis to regulate metabolic pathways in wheat, which provides new insights into wheat in response to DA-6.
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Affiliation(s)
- Daxing Wen
- State Key Laboratory of Crop Biology, Agronomy College, Shandong Agricultural University, Tai’an, Shandong Province 271018 People’s Republic of China
| | - Yan Li
- State Key Laboratory of Crop Biology, Agronomy College, Shandong Agricultural University, Tai’an, Shandong Province 271018 People’s Republic of China
| | - Lifeng He
- State Key Laboratory of Crop Biology, Agronomy College, Shandong Agricultural University, Tai’an, Shandong Province 271018 People’s Republic of China
| | - Chunqing Zhang
- State Key Laboratory of Crop Biology, Agronomy College, Shandong Agricultural University, Tai’an, Shandong Province 271018 People’s Republic of China
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Barbafieri M, Morelli E, Tassi E, Pedron F, Remorini D, Petruzzelli G. Overcoming limitation of "recalcitrant areas" to phytoextraction process: The synergistic effects of exogenous cytokinins and nitrogen treatments. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 639:1520-1529. [PMID: 29929315 DOI: 10.1016/j.scitotenv.2018.05.175] [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: 03/08/2018] [Revised: 05/11/2018] [Accepted: 05/14/2018] [Indexed: 06/08/2023]
Abstract
The aim of the present work was to test the efficiency of the phytoextraction process involving the use of exogenous phytohormone (cytokinins, CKs) and fertilizer (nitrogen, N) treatments in phytotechnologies to address risk management in "recalcitrant areas". The CKs and N treatments, alone or combined (CKs + N) in a Modulated Application (MA), were tested on the crop plant Helianthus annuus, common to Mediterranean area, fast growing and with high biomass production. Plants were grown on boron (B) contaminated sediments (collected from a geothermal area located in Tuscany (Italy). Plant growth, B uptake, together with plant stress parameters were investigated. Boron is easily taken up and translocated by some crop plants, but the high phytotoxicity can dramatically impact the plant growth and consequently the applicability and efficiency of the phytoextraction process. As indicators of plant stress, oxidative balance and photosynthetic parameters were investigated to give a deeper insight of phytotoxic mechanisms. Results showed that while each treatment (CKs and N alone) had significantly positive effects on plant health, the MA treatment provided a synergistic effect on morphological parameters and biomass production as a whole. After MA treatment, plants showed antioxidant activity comparable to that of the control (unpolluted sediments) and showed an increase of net photosynthesis. Moreover, our data showed very high values of B uptake and translocation (about 800 mg kg-1 in shoots), without any alteration triggered by the treatments (CKs and N alone or combined in MA). B phytoextraction resulted increased about fivefold with the MA treatments, while each treatment alone increased only two or three folds when treated with either CKs or N. The MA treatment is not "contaminant specific", so it could be applied in other "recalcitrant areas" where different types of contaminations occur, in order to overcome limitations of plant growth.
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Affiliation(s)
- Meri Barbafieri
- National Research Council, Institute of Ecosystem Study, Section of Pisa, Via Moruzzi, 1, 56124 Pisa, Italy.
| | - Elisabetta Morelli
- National Research Council, Institute of Biophysics, Section of Pisa, Via Moruzzi, 1, 56124 Pisa, Italy
| | - Eliana Tassi
- National Research Council, Institute of Ecosystem Study, Section of Pisa, Via Moruzzi, 1, 56124 Pisa, Italy
| | - Francesca Pedron
- National Research Council, Institute of Ecosystem Study, Section of Pisa, Via Moruzzi, 1, 56124 Pisa, Italy
| | - Damiano Remorini
- University of Pisa, Department of Agriculture, Food and Environment, Via del Borghetto, 80, 56124 Pisa, Italy
| | - Gianniantonio Petruzzelli
- National Research Council, Institute of Ecosystem Study, Section of Pisa, Via Moruzzi, 1, 56124 Pisa, Italy
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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: 5] [Impact Index Per Article: 0.8] [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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Lai HY, Cai MC. Effects of extended growth periods on subcellular distribution, chemical forms, and the translocation of cadmium in Impatiens walleriana. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2016; 18:228-234. [PMID: 26247535 DOI: 10.1080/15226514.2015.1073677] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Impatiens walleriana plants accumulate sufficiently high concentrations of cadmium (Cd) for this species to be considered a potential Cd hyperaccumulator. Rooted cuttings were grown hydroponically for 25 and 50 days in solutions spiked with various Cd concentrations. The subcellular distribution and chemical forms of Cd in different organs were analyzed, and its upward translocation was also assessed. The plants accumulated large amounts of Cd; the Cd concentration in the roots and shoots reached 120-1900 and 60-1600 mg/kg, respectively. Regardless of the growth period, the Cd accumulated in the roots was primarily compartmentalized in the soluble fraction or ethanol and deionized water extractable chemical forms with high migration abilities. Translocation to the shoots was followed by an association of Cd mainly in the cell wall or with pectate and protein. The roots' Cd showed a high migration capacity for predicting the shoots' Cd concentrations. Different exposure periods significantly affected the subcellular distribution of Cd in the stems, and thus the upward translocation.
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Affiliation(s)
- Hung-Yu Lai
- a Department of Post-Modern Agriculture , MingDao University , Peetow, Changhua County , Taiwan
| | - Ming-Cyuan Cai
- b Department of Materials and Energy Engineering , MingDao University , Peetow, Changhua County , Taiwan
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