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Abo-Al-Ela HG, Faggio C. MicroRNA-mediated stress response in bivalve species. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 208:111442. [PMID: 33038725 DOI: 10.1016/j.ecoenv.2020.111442] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/25/2020] [Accepted: 09/29/2020] [Indexed: 06/11/2023]
Abstract
Bivalve mollusks are important aquatic organisms, which are used for biological monitoring because of their abundance, ubiquitous nature, and abilities to adapt to different environments. MicroRNAs (miRNAs) are small noncoding RNAs, which typically silence the expression of target genes; however, certain miRNAs directly or indirectly upregulate their target genes. They are rapidly modulated and play an essential role in shaping the response of organisms to stresses. Based on the regulatory function and rapid alteration of miRNAs, they could act as biomarkers for biotic and abiotic stress, including environmental stresses and contaminations. Moreover, mollusk, particularly hemocytes, rapidly respond to environmental changes, such as pollution, salinity changes, and desiccation, which makes them an attractive model for this purpose. Thus, bivalve mollusks could be considered a good animal model to examine a system's response to different environmental conditions and stressors. miRNAs have been reported to adjust the adaptation and physiological functions of bivalves during endogenous and environmental stressors. In this review, we aimed to discuss the potential mechanisms underlying the response of bivalves to stressors and how miRNAs orchestrate this process; however, if necessary, other organisms' response is included to explain specific processes.
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Affiliation(s)
- Haitham G Abo-Al-Ela
- Genetics and Biotechnology, Department of Aquaculture, Faculty of Fish Resources, Suez University, Suez 43518, Egypt.
| | - Caterina Faggio
- Department of Chemical, Biological, Pharmaceutical, and Environmental Sciences, University of Messina, Viale F. Stagno d'Alcontres, 31, 98166 Messina, Italy.
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Sychta K, Słomka A, Kuta E. Insights into Plant Programmed Cell Death Induced by Heavy Metals-Discovering a Terra Incognita. Cells 2021; 10:cells10010065. [PMID: 33406697 PMCID: PMC7823951 DOI: 10.3390/cells10010065] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 12/29/2020] [Accepted: 12/30/2020] [Indexed: 02/06/2023] Open
Abstract
Programmed cell death (PCD) is a process that plays a fundamental role in plant development and responses to biotic and abiotic stresses. Knowledge of plant PCD mechanisms is still very scarce and is incomparable to the large number of studies on PCD mechanisms in animals. Quick and accurate assays, e.g., the TUNEL assay, comet assay, and analysis of caspase-like enzyme activity, enable the differentiation of PCD from necrosis. Two main types of plant PCD, developmental (dPCD) regulated by internal factors, and environmental (ePCD) induced by external stimuli, are distinguished based on the differences in the expression of the conserved PCD-inducing genes. Abiotic stress factors, including heavy metals, induce necrosis or ePCD. Heavy metals induce PCD by triggering oxidative stress via reactive oxygen species (ROS) overproduction. ROS that are mainly produced by mitochondria modulate phytotoxicity mechanisms induced by heavy metals. Complex crosstalk between ROS, hormones (ethylene), nitric oxide (NO), and calcium ions evokes PCD, with proteases with caspase-like activity executing PCD in plant cells exposed to heavy metals. This pathway leads to very similar cytological hallmarks of heavy metal induced PCD to PCD induced by other abiotic factors. The forms, hallmarks, mechanisms, and genetic regulation of plant ePCD induced by abiotic stress are reviewed here in detail, with an emphasis on plant cell culture as a suitable model for PCD studies. The similarities and differences between plant and animal PCD are also discussed.
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53
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Kumar V, Pandita S, Singh Sidhu GP, Sharma A, Khanna K, Kaur P, Bali AS, Setia R. Copper bioavailability, uptake, toxicity and tolerance in plants: A comprehensive review. CHEMOSPHERE 2021; 262:127810. [PMID: 32763578 DOI: 10.1016/j.chemosphere.2020.127810] [Citation(s) in RCA: 156] [Impact Index Per Article: 52.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/14/2020] [Accepted: 07/21/2020] [Indexed: 05/04/2023]
Abstract
Copper (Cu) is an essential element for humans and plants when present in lesser amount, while in excessive amounts it exerts detrimental effects. There subsists a narrow difference amid the indispensable, positive and detrimental concentration of Cu in living system, which substantially alters with Cu speciation, and form of living organisms. Consequently, it is vital to monitor its bioavailability, speciation, exposure levels and routes in the living organisms. The ingestion of Cu-laced food crops is the key source of this heavy metal toxicity in humans. Hence, it is necessary to appraise the biogeochemical behaviour of Cu in soil-plant system with esteem to their quantity and speciation. On the basis of existing research, this appraisal traces a probable connexion midst: Cu levels, sources, chemistry, speciation and bioavailability in the soil. Besides, the functions of protein transporters in soil-plant Cu transport, and the detrimental effect of Cu on morphological, physiological and nutrient uptake in plants has also been discussed in the current manuscript. Mechanisms related to detoxification strategies like antioxidative response and generation of glutathione and phytochelatins to combat Cu-induced toxicity in plants is discussed as well. We also delimits the Cu accretion in food crops and allied health perils from soils encompassing less or high Cu quantity. Finally, an overview of various techniques involved in the reclamation and restoration of Cu-contaminated soils has been provided.
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Affiliation(s)
- Vinod Kumar
- Department of Botany, Government Degree College, Ramban, Jammu, 182144, India.
| | - Shevita Pandita
- Department of Botany, University of Jammu, Jammu and Kashmir, India
| | - Gagan Preet Singh Sidhu
- Centre for Applied Biology in Environment Sciences, Kurukshetra University, Kurukshetra, 136119, India
| | - Anket Sharma
- State Key Laboratory of Subtropical Silviculture, Zhejiang A & F University, Hangzhou, 311300, China
| | - Kanika Khanna
- Independent Researcher, House No.282, Lane no. 3, Friends Colony, Opposite DAV College, Jalandhar, 144008, Punjab, India
| | - Parminder Kaur
- Independent Researcher, House No. 472, Ward No. 8, Dhariwal, Gurdaspur, 143519, Punjab, India
| | - Aditi Shreeya Bali
- Department of Botany, Dyal Singh College, Karnal, Haryana, 132001, India
| | - Raj Setia
- Punjab Remote Sensing Centre, Ludhiana, India
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Johnsen AR, Thomsen TB, Thaarup SM. Test of vegetation-based surface exploration for detection of Arctic mineralizations: The deep buried Kangerluarsuk Zn-Pb-Ag anomaly. JOURNAL OF GEOCHEMICAL EXPLORATION 2021; 220:106665. [PMID: 33041467 PMCID: PMC7536512 DOI: 10.1016/j.gexplo.2020.106665] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 09/22/2020] [Accepted: 10/03/2020] [Indexed: 06/11/2023]
Abstract
The aim of our study was to test whether surficial geochemical techniques are applicable under arctic conditions where pedogenesis is slow or absent, and where the vegetation is arctic dwarf shrub tundra. To this end, we sampled vegetation and topsoil at a known Zn-Pb-Ag anomaly at Kangerluarsuk, northwest Greenland. This Zn-Pb-Ag mineralization surfaces in part of the test area and is deeply buried in other parts. The surface mineralization could readily be identified by element analysis of the omnipresent plant Salix glauca. The strongest signal came from the pathfinder element Tl. The target elements Pb and Ag gave only weak signals and Zn gave no signal, probably because the cellular concentration of these elements is actively regulated by the plant. The use of regulated plant micronutrients as reference elements gave a small reduction of analytical noise in Tl/Cu and Tl/B concentration ratios at low Tl concentrations which improved identification of the deep mineralization. Pathfinder elements in plants may thus prove useful when combined with a detailed geophysical model. Tl, Zn, Pb and Ag concentrations in topsoil identified the surface mineralization but failed to identify the deep mineralization. This difference between samples of S. glauca and topsoil is probably because target elements from the deep mineralization must be mobile to reach the surface. Mobile elements may be more accessible for ion-exchange and uptake into the plants compared to the recalcitrant and crystalline fraction in the topsoil.
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Affiliation(s)
- Anders R Johnsen
- Geological Survey of Denmark and Greenland (GEUS), Department of Geochemistry, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark
| | - Tonny B Thomsen
- Geological Survey of Denmark and Greenland (GEUS), Department of Petrology and Economic Geology, Øster Voldgade 10, DK-1350 Copenhagen K, Denmark
| | - Simon M Thaarup
- Geological Survey of Denmark and Greenland (GEUS), Department of Petrology and Economic Geology, c/o Greenland Institute of Natural Resources, Kivioq 2, 3900 Nuuk, Greenland
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Szuba A, Marczak Ł, Kozłowski R. Role of the proteome in providing phenotypic stability in control and ectomycorrhizal poplar plants exposed to chronic mild Pb stress. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 264:114585. [PMID: 32387672 DOI: 10.1016/j.envpol.2020.114585] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 03/09/2020] [Accepted: 04/09/2020] [Indexed: 06/11/2023]
Abstract
Lead is a dangerous pollutant that accumulates in plant tissues and causes serious damage to plant cell macromolecules. However, plants have evolved numerous tolerance mechanisms, including ectomycorrhizae, to maintain cellular Pb2+ at the lowest possible level. When those mechanisms are successful, Pb-exposed plants should exhibit no negative phenotypic changes. However, actual molecular-level plant adjustments at Pb concentrations below the toxicity threshold are largely unknown, similar to the molecular effects of protective ectomycorrhizal root colonization. In this study, we (1) determined the molecular adjustments in plants exposed to Pb but without visible Pb stress symptoms and (2) examined ectomycorrhizal root colonization (the role of fungal biofilters) with respect to molecular-level Pb perception by plant root cells. Biochemical, microscopic, proteomic and metabolomic studies were performed to determine the molecular status of Populus × canescens microcuttings grown in agar medium enriched with 0.75 mM Pb(NO3)2. Noninoculated and inoculated with Paxillus involutus poplars were analyzed in two independent comparisons of the corresponding control and Pb treatments. After six weeks of growth, Pb caused no negative phenotypic effects. No Pb-exposed poplar showed impaired growth or decreased leaf pigmentation. Proteomic signals of intensified Pb sequestration in the plant cell wall and vacuoles, cytoskeleton modifications, H+-ATPase-14-3-3 interactions, and stabilization of protein turnover in chronically Pb-exposed plants co-occurred with high metabolomic stability. There were no differentially abundant root primary metabolites; only a few differentially abundant root secondary metabolites and no Pb-triggered ROS burst were observed. Our results strongly suggest that proteome adjustments targeting Pb sequestration and ROS scavenging, which are considerably similar but less intensive in ectomycorrhizal poplars than in control poplars due to the P. involutus biofilter (as confirmed in a mineral study), were responsible for the metabolomic and phenotypic stability of poplars exposed to chronic mild Pb stress.
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Affiliation(s)
- Agnieszka Szuba
- Institute of Dendrology, Polish Academy of Sciences, Parkowa 5, 62-035, Kórnik, Poland.
| | - Łukasz Marczak
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Noskowskiego 12/14, 61-704, Poznań, Poland
| | - Rafał Kozłowski
- Institute of Geography and Environmental Sciences, Jan Kochanowski University, Universytecka 7, 24-406, Kielce, Poland
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Mahey S, Kumar R, Sharma M, Kumar V, Bhardwaj R. A critical review on toxicity of cobalt and its bioremediation strategies. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-3020-9] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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Bioinformatics and Transcriptional Study of the Nramp Gene in the Extreme Acidophile Acidithiobacillus ferrooxidans Strain DC. MINERALS 2020. [DOI: 10.3390/min10060544] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The family of Nramp (natural resistance-associated macrophage protein) metal ion transporter functions in diverse organisms from bacteria to humans. Acidithiobacillus ferrooxidans (At. ferrooxidans) is a Gram-negative bacterium that lives at pH 2 in high concentrations of soluble ferrous ion (600 mM). The AFE_2126 protein of At. ferrooxidans of the Dachang Copper Mine (DC) was analyzed by bioinformatics software or online tools, showing that it was highly homologous to the Nramp family, and its subcellular localization was predicted to locate in the cytoplasmic membrane. Transcriptional study revealed that AFE_2126 was expressed by Fe2+-limiting conditions in At. ferrooxidans DC. It can be concluded that the AFE_2126 protein may function in ferrous ion transport into the cells. Based on the ΔpH of the cytoplasmic membrane between the periplasm (pH 3.5) and the cytoplasm (pH 6.5), it can be concluded that Fe2+ is transported in the direction identical to that of the H+ gradient. This study indirectly confirmed that the function of Nramp in At. ferrooxidans DC can transport divalent iron ions.
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58
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Ganie SA, Mazumder A, Kiran K, Hossain F, Sharma R, Mondal TK. Transcriptional dynamics of Zn-accumulation in developing kernels of maize reveals important Zn-uptake mechanisms. Genomics 2020; 112:3435-3447. [PMID: 32526248 DOI: 10.1016/j.ygeno.2020.06.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/19/2020] [Accepted: 06/04/2020] [Indexed: 11/16/2022]
Abstract
In the present study, transcriptomic analysis of 10-days old baby kernels of two contrasting maize genotypes, namely VQL-2 (high kernel Zn accumulator) and CM-145 (low kernel Zn accumulator), under low- and optimum- soil Zn conditions generated 1948 differentially expressed transcripts. Among these, 666 and 437 transcripts were up-regulated and down-regulated respectively in VQL-2; whereas, 437 and 408 transcripts were up-regulated and down-regulated respectively in CM-145. Remarkably, 135 transcription factors and 77 known Zn transporters expressed differentially. By comparing the transcripts differentially expressed between the optimum-Zn and low-Zn libraries of the contrasting genotypes, we identified 21,986 and 26,871 SNPs, respectively. Similarly, 6810 and 8192 InDels were found between optimum- and low-Zn growing conditions, respectively. Further, 21 differentially expressed genes were co-localized with already known QTLs associated with Zn uptake, such as qZn10, CQZnK9-1 and YNZnK6. These findings will be useful to develop high Zn-accumulator maize through marker-assisted breeding in future.
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Affiliation(s)
- Showkat Ahmad Ganie
- Division of Genomic Resources, ICAR-National Bureau of Plant Genetic Resources, Pusa, New Delhi 110012, India
| | - Abhishek Mazumder
- ICAR-National Institute for Plant Biotechnology, IARI Pusa, LBS Building, New Delhi 110012, India
| | - Kanti Kiran
- ICAR-National Institute for Plant Biotechnology, IARI Pusa, LBS Building, New Delhi 110012, India
| | - Firoz Hossain
- Division of Genetics, ICAR-Indian Agricultural Research Institute, Pusa, New Delhi 110012, India
| | - Ruchika Sharma
- Division of Genomic Resources, ICAR-National Bureau of Plant Genetic Resources, Pusa, New Delhi 110012, India
| | - Tapan Kumar Mondal
- Division of Genomic Resources, ICAR-National Bureau of Plant Genetic Resources, Pusa, New Delhi 110012, India; ICAR-National Institute for Plant Biotechnology, IARI Pusa, LBS Building, New Delhi 110012, India.
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59
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Arbuscular Mycorrhizal Fungi as Potential Agents in Ameliorating Heavy Metal Stress in Plants. AGRONOMY-BASEL 2020. [DOI: 10.3390/agronomy10060815] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Heavy metal accumulation in plants is a severe environmental problem, rising at an expeditious rate. Heavy metals such as cadmium, arsenic, mercury and lead are known environmental pollutants that exert noxious effects on the morpho-physiological and biological attributes of a plant. Due to their mobile nature, they have become an extended part of the food chain and affect human health. Arbuscular mycorrhizal fungi ameliorate metal toxicity as they intensify the plant’s ability to tolerate metal stress. Mycorrhizal fungi have vesicles, which are analogous to fungal vacuoles and accumulate massive amount of heavy metals in them. With the help of a pervasive hyphal network, arbuscular mycorrhizal fungi help in the uptake of water and nutrients, thereby abating the use of chemical fertilizers on the plants. They also promote resistance parameters in the plants, secrete a glycoprotein named glomalin that reduces the metal uptake in plants by forming glycoprotein–metal complexes, and improve the quality of the soil. They also assist plants in phytoremediation by increasing the absorptive area, increase the antioxidant response, chelate heavy metals and stimulate genes for protein synthesis that reduce the damage caused by free radicals. The current manuscript focuses on the uptake of heavy metals, accumulation, and arbuscular mycorrhizal impact in ameliorating heavy metal stress in plants.
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60
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Demirhan Aydın Ş, Pakyürek M. Heavy metal accumulation potential in pomegranate fruits and leaves grown in roadside orchards. PeerJ 2020; 8:e8990. [PMID: 32322447 PMCID: PMC7164423 DOI: 10.7717/peerj.8990] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 03/26/2020] [Indexed: 11/20/2022] Open
Abstract
This study was carried out to determine the possible heavy metal accumulation in fruits and leaves of Zivzik pomegranate (Punica granatum L.) grown in two different roadside orchards located in Pirinçli and Kapılı villages of Siirt province, Turkey. Leaf and fruit samples were collected from trees located at 0, 50, 100 m distances from the main roads. Plant samples were analyzed for cobalt (Co), nickel (Ni), cadmium (Cd), lead (Pb) and chromium (Cr) concentrations. The Co, Ni, Cd, Pb and Cr concentrations of fruit samples collected from Pirinçli village were ranged from 0.082 to 0.238 mg kg-1, from 1.160 to 1.559 mg kg-1, from 0.087 to 0.179 mg kg-1, 0.326 to 0.449 mg kg-1 and 0.606 to 1.054 mg kg-1, respectively. The Co, Ni, Cd, Pb and Cr concentrations of fruit samples from Kapılı village were between 0.085 and 0.137 mg kg-1, 1.042 and 1.123 mg kg-1, 0.037 and 0.076 mg kg-1, 0.277 and 0.520 mg kg-1 and 0.762 and 0.932 mg kg-1, respectively. Heavy metal concentrations of leaf samples from Pirinçli village varied from 0.191 to 0.227 mg Co kg-1, 2.201 to 3.547 mg Ni kg-1, 0.051 to 0.098 mg Cd kg-1, 0.535 to 0.749 mg Pb kg-1 and from 1.444 to 2.017 mg Cr kg-1. Similarly, the heavy metal concentration of leaf samples from Kapılı villages were between 0.213 and 0.217 mg Co kg-1, 2.160 and 2.511 mg Ni kg-1, 0.058 and 0.114 mg Cd kg-1, 0.579 and 0.676 mg Pb kg-1 and 1.688 and 1.518 mg Cr kg-1. The Co, Ni and Cr concentrations in fruit samples collected from 0, 50 and 100 meters to the main road in Pirinçli village were at statistically significant level, while only Ni concentration in leaf samples collected from 0, 50 and 100 meters to the main road was at significant level. In contrast, heavy metal concentrations in fruit and leaf samples collected from 0, 50 and 100 m to the main road in Kapılı village were not statistically significant level.
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Affiliation(s)
- Şeyma Demirhan Aydın
- Department of Horticulture, Faculty of Agriculture, Siirt University, Siirt, Turkey
| | - Mine Pakyürek
- Department of Horticulture, Faculty of Agriculture, Siirt University, Siirt, Turkey
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61
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Adamczyk-Szabela D, Lisowska K, Romanowska-Duda Z, Wolf WM. Combined cadmium-zinc interactions alter manganese, lead, copper uptake by Melissa officinalis. Sci Rep 2020; 10:1675. [PMID: 32015369 PMCID: PMC6997233 DOI: 10.1038/s41598-020-58491-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 01/10/2020] [Indexed: 11/08/2022] Open
Abstract
Farmland soil typical for the Polish rural environment was used in pot experiment to estimate the impact of cadmium and zinc on the manganese, lead and copper uptake by lemon balm (Melissa officinalis L). Bioavailable and total forms of investigated metals in soil and metal concentrations in plants were determined by atomic absorption spectrometry. The plant photosynthesis indicators were also examined. Intensification of photosynthesis upon the high zinc and cadmium soil supplementation was observed. This effect was not detected at low metal concentrations. ANOVA proved that cadmium and zinc treatments influenced manganese, lead and copper transfer from soil and their concentration in plants. Zinc uptake and accumulation in either roots or above-ground parts in plant was inversely proportional to cadmium concentration in soil. Manganese concentration in roots decreased upon the soil supplementation with either zinc or cadmium. It suggests that the latter ions are transported via symplastic pathways and compete with manganese for similar transporters. The opposite situation was observed for lead and copper. Soil supplementation with cadmium and zinc affects manganese, lead and copper concentrations and photosynthesis intensity in lemon balm plant. The following combined interactions in either normal or stress conditions are important indicators of the migration pathways.
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Affiliation(s)
- Dorota Adamczyk-Szabela
- Lodz University of Technology, Institute of General and Ecological Chemistry, 90-924, Lodz, Zeromskiego 116, Poland.
| | - Katarzyna Lisowska
- Lodz University of Technology, Institute of General and Ecological Chemistry, 90-924, Lodz, Zeromskiego 116, Poland
| | - Zdzisława Romanowska-Duda
- University of Lodz, Laboratory of Plants Ecophysiology. Faculty of Biology and Environmental Protection, 90-237, Lodz, Banacha 12/16, Poland
| | - Wojciech M Wolf
- Lodz University of Technology, Institute of General and Ecological Chemistry, 90-924, Lodz, Zeromskiego 116, Poland
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Danil de Namor AF, Alharthi S, Howlin B, Al Hakawati N. A selective and easily recyclable dimer based on a calix[4]pyrrole derivative for the removal of mercury(ii) from water. RSC Adv 2020; 10:3060-3071. [PMID: 35497725 PMCID: PMC9048711 DOI: 10.1039/c9ra09911e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 01/09/2020] [Indexed: 11/21/2022] Open
Abstract
A recyclable mercury(ii) selective dimer based on a calix[4]pyrrole derivative has been synthesised and characterised by mass and FT-IR spectrometry, Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray (EDX). Information regarding the ability of the dimer to interact with metal cations was obtained from FTIR and SEM-EDX analyses. A striking feature of micrographs of the loaded dimer is the change of morphology with the cation. Based on these results, optimal conditions for removing cations from water were assessed under different experimental conditions. Results obtained demonstrate that the removal process is fast. Capacity values and selectivity factors show that the dimer is selective for Hg(ii) in single and multiple component metal solutions relative to other cations. Single-ion transfer Gibbs energies from water to a solvent containing common functionalities to those of the dimer were used to assess the counter-ion effect on the removal process. Agreement is found between these data and energy calculations derived from molecular simulation studies. Studies on polluted water in the presence of normal water components in addition to toxic metal cations are reported. Further experimental work on wastewater from the mining industry is in progress.
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Affiliation(s)
- Angela F Danil de Namor
- Laboratory of Thermochemistry, Department of Chemistry, University of Surrey Guildford Surrey GU2 7XH UK +44(0)-1483 689581 +44(0)-7757147701
- Instituto Nacional de Tecnologia Industrial, Ministry of Production Argentina
| | - Salman Alharthi
- Laboratory of Thermochemistry, Department of Chemistry, University of Surrey Guildford Surrey GU2 7XH UK +44(0)-1483 689581 +44(0)-7757147701
| | - Brendan Howlin
- Laboratory of Thermochemistry, Department of Chemistry, University of Surrey Guildford Surrey GU2 7XH UK +44(0)-1483 689581 +44(0)-7757147701
| | - Nawal Al Hakawati
- Laboratory of Thermochemistry, Department of Chemistry, University of Surrey Guildford Surrey GU2 7XH UK +44(0)-1483 689581 +44(0)-7757147701
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Khatiwada B, Hasan MT, Sun A, Kamath KS, Mirzaei M, Sunna A, Nevalainen H. Probing the Role of the Chloroplasts in Heavy Metal Tolerance and Accumulation in Euglena gracilis. Microorganisms 2020; 8:E115. [PMID: 31947612 PMCID: PMC7023027 DOI: 10.3390/microorganisms8010115] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/11/2020] [Accepted: 01/12/2020] [Indexed: 12/02/2022] Open
Abstract
The E. gracilis Zm-strain lacking chloroplasts, characterized in this study, was compared with the earlier assessed wild type Z-strain to explore the role of chloroplasts in heavy metal accumulation and tolerance. Comparison of the minimum inhibitory concentration (MIC) values indicated that both strains tolerated similar concentrations of mercury (Hg) and lead (Pb), but cadmium (Cd) tolerance of the Z-strain was twice that of the Zm-strain. The ability of the Zm-strain to accumulate Hg was higher compared to the Z-strain, indicating the existence of a Hg transportation and accumulation mechanism not depending on the presence of chloroplasts. Transmission electron microscopy (TEM) showed maximum accumulation of Hg in the cytosol of the Zm-strain and highest accumulation of Cd in the chloroplasts of the Z-strain indicating a difference in the ability of the two strains to deposit heavy metals in the cell. The highly abundant heavy metal transporter MTP2 in the Z-strain may have a role in Cd transportation to the chloroplasts. A multidrug resistance-associated protein highly increased in abundance in the Zm-strain could be a potential Hg transporter to either cytosol or mitochondria. Overall, the chloroplasts appear to have major role in the tolerance and accumulation of Cd in E. gracilis.
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Affiliation(s)
- Bishal Khatiwada
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia; (B.K.); (M.T.H.); (A.S.); (K.S.K.); (M.M.)
- Biomolecular Discovery and Design Research Centre, Macquarie University, Sydney, NSW 2109, Australia
| | - Mafruha T. Hasan
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia; (B.K.); (M.T.H.); (A.S.); (K.S.K.); (M.M.)
- Biomolecular Discovery and Design Research Centre, Macquarie University, Sydney, NSW 2109, Australia
| | - Angela Sun
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia; (B.K.); (M.T.H.); (A.S.); (K.S.K.); (M.M.)
- Biomolecular Discovery and Design Research Centre, Macquarie University, Sydney, NSW 2109, Australia
| | - Karthik Shantharam Kamath
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia; (B.K.); (M.T.H.); (A.S.); (K.S.K.); (M.M.)
- Biomolecular Discovery and Design Research Centre, Macquarie University, Sydney, NSW 2109, Australia
- Australian Proteome Analysis Facility, Macquarie University, Sydney, NSW 2109, Australia
| | - Mehdi Mirzaei
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia; (B.K.); (M.T.H.); (A.S.); (K.S.K.); (M.M.)
- Biomolecular Discovery and Design Research Centre, Macquarie University, Sydney, NSW 2109, Australia
- Australian Proteome Analysis Facility, Macquarie University, Sydney, NSW 2109, Australia
| | - Anwar Sunna
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia; (B.K.); (M.T.H.); (A.S.); (K.S.K.); (M.M.)
- Biomolecular Discovery and Design Research Centre, Macquarie University, Sydney, NSW 2109, Australia
| | - Helena Nevalainen
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia; (B.K.); (M.T.H.); (A.S.); (K.S.K.); (M.M.)
- Biomolecular Discovery and Design Research Centre, Macquarie University, Sydney, NSW 2109, Australia
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64
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Proteomic response of Euglena gracilis to heavy metal exposure – Identification of key proteins involved in heavy metal tolerance and accumulation. ALGAL RES 2020. [DOI: 10.1016/j.algal.2019.101764] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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65
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Narendrula-Kotha R, Theriault G, Mehes-Smith M, Kalubi K, Nkongolo K. Metal Toxicity and Resistance in Plants and Microorganisms in Terrestrial Ecosystems. REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2020; 249:1-27. [PMID: 30725190 DOI: 10.1007/398_2018_22] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Metals are major abiotic stressors of many organisms, but their toxicity in plants is not as studied as in microorganisms and animals. Likewise, research in plant responses to metal contamination is sketchy. Candidate genes associated with metal resistance in plants have been recently discovered and characterized. Some mechanisms of plant adaptation to metal stressors have been now decrypted. New knowledge on microbial reaction to metal contamination and the relationship between bacterial, archaeal, and fungal resistance to metals has broadened our understanding of metal homeostasis in living organisms. Recent reviews on metal toxicity and resistance mechanisms focused only on the role of transcriptomics, proteomics, metabolomics, and ionomics. This review is a critical analysis of key findings on physiological and genetic processes in plants and microorganisms in responses to soil metal contaminations.
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Affiliation(s)
| | - Gabriel Theriault
- Biomolecular Sciences Program, Laurentian University, Sudbury, ON, Canada
| | | | - Kersey Kalubi
- Biomolecular Sciences Program, Laurentian University, Sudbury, ON, Canada
| | - Kabwe Nkongolo
- Biomolecular Sciences Program, Laurentian University, Sudbury, ON, Canada.
- Department of Biology, Laurentian University, Sudbury, ON, Canada.
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66
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Aslam M, Aslam A, Sheraz M, Ali B, Ulhassan Z, Najeeb U, Zhou W, Gill RA. Lead Toxicity in Cereals: Mechanistic Insight Into Toxicity, Mode of Action, and Management. FRONTIERS IN PLANT SCIENCE 2020; 11:587785. [PMID: 33633751 PMCID: PMC7901902 DOI: 10.3389/fpls.2020.587785] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 12/21/2020] [Indexed: 05/04/2023]
Abstract
Cereals are the major contributors to global food supply, accounting for more than half of the total human calorie requirements. Sustainable availability of quality cereal grains is an important step to address the high-priority issue of food security. High concentrations of heavy metals specifically lead (Pb) in the soil negatively affect biochemical and physiological processes regulating grain quality in cereals. The dietary intake of Pb more than desirable quantity via food chain is a major concern for humans, as it can predispose individuals to chronic health issues. In plant systems, high Pb concentrations can disrupt several key metabolic processes such as electron transport chain, cellular organelles integrity, membrane stability index, PSII connectivity, mineral metabolism, oxygen-evolving complex, and enzymatic activity. Plant growth-promoting rhizobacteria (PGPR) has been recommended as an inexpensive strategy for remediating Pb-contaminated soils. A diverse group of Ascomycetes fungi, i.e., dark septate endophytes is successfully used for this purpose. A symbiotic relationship between endophytes and host cereal induces Pb tolerance by immobilizing Pb ions. Molecular and cellular modifications in plants under Pb-stressed environments are explained by transcription factor families such as bZIP, ERF, and GARP as a regulator. The role of metal tolerance protein (MTP), natural resistance-associated macrophage protein (NRAMP), and heavy metal ATPase in decreasing Pb toxicity is well known. In the present review, we provided the contemporary synthesis of existing data regarding the effects of Pb toxicity on morpho-physiological and biochemical responses of major cereal crops. We also highlighted the mechanism/s of Pb uptake and translocation in plants, critically discussed the possible management strategies and way forward to overcome the menace of Pb toxicity in cereals.
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Affiliation(s)
- Muhammad Aslam
- Department of Plant Breeding and Genetics, University of Agriculture, Faisalabad, Pakistan
| | - Ayesha Aslam
- Department of Plant Breeding and Genetics, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Sheraz
- Department of Plant Breeding and Genetics, University of Agriculture, Faisalabad, Pakistan
| | - Basharat Ali
- Department of Agronomy, University of Agriculture, Faisalabad, Pakistan
| | - Zaid Ulhassan
- Zhejiang Key Laboratory of Crop Germplasm, Institute of Crop Science, Zhejiang University, Hangzhou, China
| | - Ullah Najeeb
- Queensland Alliance for Agriculture and Food Innovation, Centre for Crop Science, University of Queensland, Brisbane, QLD, Australia
| | - Weijun Zhou
- Zhejiang Key Laboratory of Crop Germplasm, Institute of Crop Science, Zhejiang University, Hangzhou, China
| | - Rafaqat Ali Gill
- Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences/The Key Laboratory of Biology and GeneticImprovement of Oil Crops, The Ministry of Agriculture and Rural Affairs, Wuhan, China
- *Correspondence: Rafaqat Ali Gill, ;
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67
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Vanyorek L, Muránszky G, Fiser B, Sikora E, Hutkai ZG, Viskolcz B. Adsorption capacity of oxidized nitrogen-doped bamboo-like carbon nanotubes. J DISPER SCI TECHNOL 2019. [DOI: 10.1080/01932691.2019.1637757] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- László Vanyorek
- Institute of Chemistry, University of Miskolc, Miskolc-Egyetemváros, Hungary
| | - Gábor Muránszky
- Institute of Chemistry, University of Miskolc, Miskolc-Egyetemváros, Hungary
| | - Béla Fiser
- Institute of Chemistry, University of Miskolc, Miskolc-Egyetemváros, Hungary
- Ferenc Rákóczi II. Transcarpathian Hungarian Institute, Beregszász, Transcarpathia, Ukraine
| | - Emőke Sikora
- Institute of Chemistry, University of Miskolc, Miskolc-Egyetemváros, Hungary
| | - Zsuzsanna G. Hutkai
- Institute of Chemistry, University of Miskolc, Miskolc-Egyetemváros, Hungary
| | - Béla Viskolcz
- Institute of Chemistry, University of Miskolc, Miskolc-Egyetemváros, Hungary
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68
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Sun L, Wang J, Song K, Sun Y, Qin Q, Xue Y. Transcriptome analysis of rice (Oryza sativa L.) shoots responsive to cadmium stress. Sci Rep 2019; 9:10177. [PMID: 31308454 PMCID: PMC6629703 DOI: 10.1038/s41598-019-46684-w] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 07/03/2019] [Indexed: 12/18/2022] Open
Abstract
Cadmium (Cd) is highly toxic to living organisms. This study aimed to elucidate the regulation of gene expression in rice shoots under Cd stress. Rice plants were exposed to 0, 50, 75, 100 μmol/L CdCl2 in hydroponic culture for 7 d. Transcriptional changes in rice shoots were examined by transcriptome sequencing techniques. A total of 2197 DEGs (987 up-regulated and 1210 down-regulated) were detected in rice shoots under the exposure of 75 μmol/L CdCl2. GO and KEGG enrichment analyses showed that genes encoding auxin-responsive protein IAA and peroxidase were up-regulated, while genes encoding proteins involved in signal transduction, including TIFY family, ERF and bZIP were down-regulated. Abundant ROS related terms were also identified and grouped into significantly differentially expressed GO terms, including oxidoreductase activity, catalytic activity, oxidation-reduction process, confirming the enhanced oxidative stress of Cd. Genes encoding photosystem I reaction center subunit and photosynthetic NDH subunit of luminal location were up-regulated in pathway of energy metabolism, suggesting an interference of photosynthesis by Cd stress. Our results improve the understanding of the complex molecular responsive mechanisms of rice shoots under Cd stress.
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Affiliation(s)
- Lijuan Sun
- Institute of ECO-Environment and Plant Protection, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
- Shanghai Scientific Observation and Experimental Station for Agricultural Environment and Land Conservation, Shanghai, 201403, China
- Shanghai Environmental Protection Monitoring Station of Agriculture, Shanghai, 201403, China
- Shanghai Engineering Research Centre of Low-carbon Agriculture (SERLA), Shanghai, 201403, China
- Shanghai Key Laboratory of Protected Horticultural Technology, Shanghai, 201403, China
| | - Jun Wang
- Institute of ECO-Environment and Plant Protection, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
- College of Resources and Environmental Sciences, Nanjing Agricultural University, No. 1, Weigang, Xuanwu District, Nanjing, 210095, China
| | - Ke Song
- Institute of ECO-Environment and Plant Protection, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
- Shanghai Scientific Observation and Experimental Station for Agricultural Environment and Land Conservation, Shanghai, 201403, China
- Shanghai Environmental Protection Monitoring Station of Agriculture, Shanghai, 201403, China
- Shanghai Engineering Research Centre of Low-carbon Agriculture (SERLA), Shanghai, 201403, China
- Shanghai Key Laboratory of Protected Horticultural Technology, Shanghai, 201403, China
| | - Yafei Sun
- Institute of ECO-Environment and Plant Protection, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China
- Shanghai Scientific Observation and Experimental Station for Agricultural Environment and Land Conservation, Shanghai, 201403, China
- Shanghai Environmental Protection Monitoring Station of Agriculture, Shanghai, 201403, China
- Shanghai Engineering Research Centre of Low-carbon Agriculture (SERLA), Shanghai, 201403, China
- Shanghai Key Laboratory of Protected Horticultural Technology, Shanghai, 201403, China
| | - Qin Qin
- Institute of ECO-Environment and Plant Protection, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China.
- Shanghai Scientific Observation and Experimental Station for Agricultural Environment and Land Conservation, Shanghai, 201403, China.
- Shanghai Environmental Protection Monitoring Station of Agriculture, Shanghai, 201403, China.
- Shanghai Engineering Research Centre of Low-carbon Agriculture (SERLA), Shanghai, 201403, China.
- Shanghai Key Laboratory of Protected Horticultural Technology, Shanghai, 201403, China.
| | - Yong Xue
- Institute of ECO-Environment and Plant Protection, Shanghai Academy of Agricultural Sciences, Shanghai, 201403, China.
- Shanghai Scientific Observation and Experimental Station for Agricultural Environment and Land Conservation, Shanghai, 201403, China.
- Shanghai Environmental Protection Monitoring Station of Agriculture, Shanghai, 201403, China.
- Shanghai Engineering Research Centre of Low-carbon Agriculture (SERLA), Shanghai, 201403, China.
- Shanghai Key Laboratory of Protected Horticultural Technology, Shanghai, 201403, China.
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69
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Wang H, Liu Y, Peng Z, Li J, Huang W, Liu Y, Wang X, Xie S, Sun L, Han E, Wu N, Luo K, Wang B. Ectopic Expression of Poplar ABC Transporter PtoABCG36 Confers Cd Tolerance in Arabidopsis thaliana. Int J Mol Sci 2019; 20:ijms20133293. [PMID: 31277496 PMCID: PMC6652139 DOI: 10.3390/ijms20133293] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 06/30/2019] [Accepted: 07/01/2019] [Indexed: 11/16/2022] Open
Abstract
Cadmium (Cd) is one of the most toxic heavy metals for plant growth in soil. ATP-binding cassette (ABC) transporters play important roles in biotic and abiotic stresses. However, few ABC transporters have been characterized in poplar. In this study, we isolated an ABC transporter gene PtoABCG36 from Populus tomentosa. The PtoABCG36 transcript can be detected in leaves, stems and roots, and the expression in the root was 3.8 and 2 times that in stems and leaves, respectively. The PtoABCG36 expression was induced and peaked at 12 h after exposure to Cd stress. Transient expression of PtoABCG36 in tobacco showed that PtoABCG36 is localized at the plasma membrane. When overexpressed in yeast and Arabidopsis, PtoABCG36 could decrease Cd accumulation and confer higher Cd tolerance in transgenic lines than in wild-type (WT) lines. Net Cd2+ efflux measurements showed a decreasing Cd uptake in transgenic Arabidopsis roots than WT. These results demonstrated that PtoABCG36 functions as a cadmium extrusion pump participating in enhancing tolerance to Cd through decreasing Cd content in plants, which provides a promising way for making heavy metal tolerant poplar by manipulating ABC transporters in cadmium polluted areas.
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Affiliation(s)
- Huihong Wang
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), College of Life Sciences, Southwest University, Chongqing 400715, China
| | - Yuanyuan Liu
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), College of Life Sciences, Southwest University, Chongqing 400715, China
| | - Zaihui Peng
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), College of Life Sciences, Southwest University, Chongqing 400715, China
| | - Jianchun Li
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), College of Life Sciences, Southwest University, Chongqing 400715, China
| | - Weipeng Huang
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), College of Life Sciences, Southwest University, Chongqing 400715, China
| | - Yan Liu
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), College of Life Sciences, Southwest University, Chongqing 400715, China
| | - Xuening Wang
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), College of Life Sciences, Southwest University, Chongqing 400715, China
| | - Shengli Xie
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), College of Life Sciences, Southwest University, Chongqing 400715, China
| | - Liping Sun
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), College of Life Sciences, Southwest University, Chongqing 400715, China
| | - Erqin Han
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), College of Life Sciences, Southwest University, Chongqing 400715, China
| | - Nengbiao Wu
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), College of Life Sciences, Southwest University, Chongqing 400715, China
| | - Keming Luo
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), College of Life Sciences, Southwest University, Chongqing 400715, China
| | - Bangjun Wang
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, Key Laboratory of Eco-Environments in Three Gorges Reservoir Region (Ministry of Education), College of Life Sciences, Southwest University, Chongqing 400715, China.
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70
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Bali S, Jamwal VL, Kaur P, Kohli SK, Ohri P, Gandhi SG, Bhardwaj R, Al-Huqail AA, Siddiqui MH, Ahmad P. Role of P-type ATPase metal transporters and plant immunity induced by jasmonic acid against Lead (Pb) toxicity in tomato. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 174:283-294. [PMID: 30844668 DOI: 10.1016/j.ecoenv.2019.02.084] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Revised: 02/11/2019] [Accepted: 02/25/2019] [Indexed: 05/17/2023]
Abstract
The phytohormone jasmonic acid (JA) plays an imperative role in plants by modulating the activity of their antioxidative defense system under stress conditions. Here, we explored the role of JA-induced alterations in the growth and transcript levels of antioxidative enzymes in tomato seedlings exposed to different Pb concentrations (0.25, 0.50, and 0.75 mM). Pb treatment caused a dose-dependent reduction in their root and shoot lengths. Treatment of 0.75 mM Pb showed an increase in the contents of malondialdehyde (MDA), superoxide anion (O2•-), and hydrogen peroxide (H2O2) as compared to the untreated seedlings. Pb uptake was enhanced with an increase in Pb concentration. The seeds primed with JA showed reduction in Pb uptake and improvement in growth under Pb toxicity. The seedlings treated with both JA (100 nM) and Pb (0.75 mM) showed a decline in the levels of MDA, O2•-, and H2O2 as compared to the seedlings treated with 0.75 mM Pb alone. These results suggested that JA (100 nM) mitigated the oxidative damage by lowering the expression of the RBO and P-type ATPase transporter genes and by modulating antioxidative defense system activity. The biochemical and molecular analyses showed that JA plays a crucial role in plant defense responses against Pb stress.
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Affiliation(s)
- Shagun Bali
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar 143005, Punjab, India
| | - Vijay Lakshmi Jamwal
- Indian Institute of Integrative Medicine (CSIR-IIIM), Council of Scientific and Industrial Research, Canal Road, Jammu 180 001, India
| | - Parminder Kaur
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar 143005, Punjab, India
| | - Sukhmeen Kaur Kohli
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar 143005, Punjab, India
| | - Puja Ohri
- Department of Zoology, Guru Nanak Dev University, Amritsar 143005, Punjab, India
| | - Sumit G Gandhi
- Indian Institute of Integrative Medicine (CSIR-IIIM), Council of Scientific and Industrial Research, Canal Road, Jammu 180 001, India.
| | - Renu Bhardwaj
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar 143005, Punjab, India.
| | - Asma A Al-Huqail
- Chair of Climate Change, Environmental Development and Vegetation Cover, Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Manzer H Siddiqui
- Chair of Climate Change, Environmental Development and Vegetation Cover, Department of Botany and Microbiology, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Parvaiz Ahmad
- Botany and Microbiology Department, College of Science, King Saud University, Riyadh, Saudi Arabia; Department of Botany, S.P. College, Srinagar, Jammu and Kashmir, India.
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71
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Cotrim CA, Jarrott RJ, Martin JL, Drew D. A structural overview of the zinc transporters in the cation diffusion facilitator family. Acta Crystallogr D Struct Biol 2019; 75:357-367. [PMID: 30988253 PMCID: PMC6465983 DOI: 10.1107/s2059798319003814] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 03/19/2019] [Indexed: 01/07/2023] Open
Abstract
The cation diffusion facilitators (CDFs) are a family of membrane-bound proteins that maintain cellular homeostasis of essential metal ions. In humans, the zinc-transporter CDF family members (ZnTs) play important roles in zinc homeostasis. They do this by facilitating zinc efflux from the cytoplasm to the extracellular space across the plasma membrane or into intracellular organelles. Several ZnTs have been implicated in human health owing to their association with type 2 diabetes and neurodegenerative diseases. Although the structure determination of CDF family members is not trivial, recent advances in membrane-protein structural biology have resulted in two structures of bacterial YiiPs and several structures of their soluble C-terminal domains. These data reveal new insights into the molecular mechanism of ZnT proteins, suggesting a unique rocking-bundle mechanism that provides alternating access to the metal-binding site.
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Affiliation(s)
- Camila A. Cotrim
- Griffith Institute for Drug Discovery, Griffith University, Nathan, QLD 4111, Australia
| | - Russell J. Jarrott
- Griffith Institute for Drug Discovery, Griffith University, Nathan, QLD 4111, Australia
| | - Jennifer L. Martin
- Griffith Institute for Drug Discovery, Griffith University, Nathan, QLD 4111, Australia
| | - David Drew
- Department of Biochemistry and Biophysics, Stockholm University, SE-106 91 Stockholm, Sweden
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72
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Kajala K, Walker KL, Mitchell GS, Krämer U, Cherry SR, Brady SM. Real-time whole-plant dynamics of heavy metal transport in Arabidopsis halleri and Arabidopsis thaliana by gamma-ray imaging. PLANT DIRECT 2019; 3:e00131. [PMID: 31309170 PMCID: PMC6589544 DOI: 10.1002/pld3.131] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Revised: 01/30/2019] [Accepted: 03/08/2019] [Indexed: 06/08/2023]
Abstract
Heavy metals such as zinc are essential for plant growth, but toxic at high concentrations. Despite our knowledge of the molecular mechanisms of heavy metal uptake by plants, experimentally addressing the real-time whole-plant dynamics of heavy metal uptake and partitioning has remained a challenge. To overcome this, we applied a high sensitivity gamma-ray imaging system to image uptake and transport of radioactive 65Zn in whole-plant assays of Arabidopsis thaliana and the Zn hyperaccumulator Arabidopsis halleri. We show that our system can be used to quantitatively image and measure uptake and root-to-shoot translocation dynamics of zinc in real time. In the metal hyperaccumulator Arabidopsis halleri, 65Zn uptake and transport from its growth media to the shoot occurs rapidly and on time scales similar to those reported in rice. In transgenic A. halleri plants in which expression of the zinc transporter gene HMA4 is suppressed by RNAi, 65Zn uptake is completely abolished.
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Affiliation(s)
- Kaisa Kajala
- Department of Plant Biology and Genome CenterUniversity of California DavisDavisCalifornia
- Plant EcophysiologyInstitute of Environmental BiologyUtrecht UniversityUtrechtThe Netherlands
| | - Katherine L. Walker
- Department of Biomedical EngineeringUniversity of California DavisDavisCalifornia
| | - Gregory S. Mitchell
- Department of Biomedical EngineeringUniversity of California DavisDavisCalifornia
| | - Ute Krämer
- Molecular Genetics and Physiology of PlantsRuhr University BochumBochumGermany
| | - Simon R. Cherry
- Department of Biomedical EngineeringUniversity of California DavisDavisCalifornia
| | - Siobhan M. Brady
- Department of Plant Biology and Genome CenterUniversity of California DavisDavisCalifornia
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73
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Recent Progress in Metal-Microbe Interactions: Prospects in Bioremediation. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2019. [DOI: 10.22207/jpam.13.1.02] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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74
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Khan AHA, Butt TA, Mirza CR, Yousaf S, Nawaz I, Iqbal M. Combined application of selected heavy metals and EDTA reduced the growth of Petunia hybrida L. Sci Rep 2019; 9:4138. [PMID: 30858414 PMCID: PMC6411725 DOI: 10.1038/s41598-019-40540-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 02/18/2019] [Indexed: 12/20/2022] Open
Abstract
Up till now, despite of well-developed ornamental market, very little information is available on Petunia hybrida L. tolerance against heavy metals (HMs), which can contribute in both beautification of urban dwellings, as well as potential in phytoremediation. Therefore, hydroponic study was conducted to check the effects of Cd, Cr, Cu, Ni and Pb individually (50 and 100 μM) and with co-application of EDTA (2.5 mM) in Hoagland's nutrient solution. Results indicated higher uptake of Cd, Cr, Ni and Pb in above ground parts, and Cu in roots, further the co-application of EDTA enhanced HMs uptake in P. hybrida L. This uptake accompanied changes in biochemical stress indicators, included significantly higher MDA, H2O2 contents and electrolyte leakage with reduced chlorophyll a, chlorophyll b, total chlorophyll and carotenoid content. Upon exposure to HMs increased antioxidant enzyme activities (CAT, POX, GST, APX, and SOD) were noted. Though selected HMs can be removed by using P. hybrida L., the findings of current study indicated that the direct exposure of P. hybrida L. to Cd, Cr, Cu, Ni and Pb damaged the plant's aesthetics, and to use P. hybrida L. for beautification of urban landscape or phytoremediation, appropriate soil modification should be included.
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Affiliation(s)
- Aqib Hassan Ali Khan
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, 45320, Islamabad, Pakistan
| | - Tayyab Ashfaq Butt
- Department of Architectural Engineering, College of Engineering, University of Hail, Hail, Saudi Arabia
| | - Cyrus Raza Mirza
- Department of Architectural Engineering, College of Engineering, University of Hail, Hail, Saudi Arabia
| | - Sohail Yousaf
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, 45320, Islamabad, Pakistan
| | - Ismat Nawaz
- Department of Environmental Sciences, Biotechnology Program, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, Pakistan
| | - Mazhar Iqbal
- Department of Environmental Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, 45320, Islamabad, Pakistan.
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75
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Asgari Lajayer B, Khadem Moghadam N, Maghsoodi MR, Ghorbanpour M, Kariman K. Phytoextraction of heavy metals from contaminated soil, water and atmosphere using ornamental plants: mechanisms and efficiency improvement strategies. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:8468-8484. [PMID: 30712209 DOI: 10.1007/s11356-019-04241-y] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Accepted: 01/14/2019] [Indexed: 05/22/2023]
Abstract
Accumulation of heavy metals (HMs) in soil, water and air is one of the major environmental concerns worldwide, which mainly occurs due to anthropogenic activities such as industrialization, urbanization, and mining. Conventional remediation strategies involving physical or chemical techniques are not cost-effective and/or eco-friendly, reinforcing the necessity for development of novel approaches. Phytoextraction has attracted considerable attention over the past decades and generally refers to use of plants for cleaning up environmental pollutants such as HMs. Compared to other plant types such as edible crops and medicinal plants, ornamental plants (OPs) seem to be a more viable option as they offer several advantages including cleaning up the HMs pollution, beautification of the environment, by-product generation and related economic benefits, and not generally being involved in the food/feed chain or other direct human applications. Phytoextraction ability of OPs involve diverse detoxification pathways such as enzymatic and non-enzymatic (secondary metabolites) antioxidative responses, distribution and deposition of HMs in the cell walls, vacuoles and metabolically inactive tissues, and chelation of HMs by a ligand such as phytochelatins followed by the sequestration of the metal-ligand complex into the vacuoles. The phytoextraction efficiency of OPs can be improved through chemical, microbial, soil amending, and genetic approaches, which primarily target bioavailability, uptake, and sequestration of HMs. In this review, we explore the phytoextraction potential of OPs for remediation of HMs-polluted environments, underpinning mechanisms, efficiency improvement strategies, and highlight the potential future research directions.
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Affiliation(s)
- Behnam Asgari Lajayer
- Department of Soil Science, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
| | - Nader Khadem Moghadam
- Department of Soil Science, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
| | | | - Mansour Ghorbanpour
- Department of Medicinal Plants, Faculty of Agriculture and Natural Resources, Arak University, Arak, 38156-8-8349, Iran.
| | - Khalil Kariman
- School of Agriculture and Environment M087, The University of Western Australia, Crawley, WA, 6009, Australia
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Nakanishi-Masuno T, Shitan N, Sugiyama A, Takanashi K, Inaba S, Kaneko S, Yazaki K. The Crotalaria juncea metal transporter CjNRAMP1 has a high Fe uptake activity, even in an environment with high Cd contamination. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 20:1427-1437. [PMID: 30652514 DOI: 10.1080/15226514.2018.1501333] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Large quantities of Fe and Cd accumulate in the leaves of the metal-accumulating leguminous plant, Crotalaria juncea. A member of the metal transporter NRAMP family was cloned from C. juncea. The amino acid sequence of this clone, designated CjNRAMP1, was similar to the sequence of Arabidopsis AtNRAMP1, which is involved in Fe and Cd transport. Organ-specific analysis showed that CjNRAMP1 mRNA was expressed mainly in the leaves of C. juncea plants, as well as in stems and roots. Use of green fluorescent protein fused to CjNRAMP1 suggested its localization to the plasma membranes of plant cells. Complementation experiments using yeast strains with impaired metal transport systems showed that CjNRAMP1 transported both Fe and Cd in an inward direction within the cells. Transgenic Arabidopsis plants overexpressing CjNRAMP1 showed high tolerance to Cd, with Cd translocation from roots to leaves being substantially greater in transgenic than in wild-type plants. Overexpression of CjNRAMP1 resulted in a greater accumulation of Fe in shoots and roots, suggesting that CjNRAMP1 recognizes Fe and Cd as substrates and that the high Cd tolerance of CjNRAMP1 is due to its strong Fe uptake activity, even in the presence of high Cd concentrations in the rhizosphere.
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Affiliation(s)
- Tsugumi Nakanishi-Masuno
- a Laboratory of Plant Gene Expression, Research Institute for Sustainable Humanosphere , Kyoto University , Kyoto , Japan
- b Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences , Kyoto University , Kyoto , Japan
| | - Nobukazu Shitan
- a Laboratory of Plant Gene Expression, Research Institute for Sustainable Humanosphere , Kyoto University , Kyoto , Japan
| | - Akifumi Sugiyama
- a Laboratory of Plant Gene Expression, Research Institute for Sustainable Humanosphere , Kyoto University , Kyoto , Japan
| | - Kojiro Takanashi
- a Laboratory of Plant Gene Expression, Research Institute for Sustainable Humanosphere , Kyoto University , Kyoto , Japan
| | - Shoko Inaba
- a Laboratory of Plant Gene Expression, Research Institute for Sustainable Humanosphere , Kyoto University , Kyoto , Japan
| | - Shuji Kaneko
- b Department of Molecular Pharmacology, Graduate School of Pharmaceutical Sciences , Kyoto University , Kyoto , Japan
| | - Kazufumi Yazaki
- a Laboratory of Plant Gene Expression, Research Institute for Sustainable Humanosphere , Kyoto University , Kyoto , Japan
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Li J, Wang Y, Zheng L, Li Y, Zhou X, Li J, Gu D, Xu E, Lu Y, Chen X, Zhang W. The Intracellular Transporter AtNRAMP6 Is Involved in Fe Homeostasis in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2019; 10:1124. [PMID: 31608084 PMCID: PMC6757856 DOI: 10.3389/fpls.2019.01124] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 08/15/2019] [Indexed: 05/06/2023]
Abstract
Natural resistance-associated macrophage proteins (NRAMPs) have been shown to transport a wide range of divalent metal ions, such as manganese (Mn), cadmium (Cd), and Iron (Fe). Iron is an essential micronutrient for plants and Fe deficiency can lead to chlorosis or decreased biomass. AtNRAMP6 has demonstrated the capability to transport Cd, but its physiological function is currently unclear. This study demonstrates that AtNRAMP6 is localized to the Golgi/trans-Golgi network and plays an important role in intracellular Fe homeostasis in the flowering plant genus Arabidopsis. GUS tissue-specific expression revealed that AtNRAMP6 is highly expressed in the lateral roots and young leaves (three to four top leaves) of Arabidopsis. Moreover, knocking out AtNRAMP6 was shown to impair lateral root growth without having a differential effect on the main root under Fe-deficient conditions. Lastly, the expression of AtNRAMP6 was found to exacerbate the sensitivity of the yeast mutant Δccc1 to an excessive amount of Fe. These findings indicate that AtNRAMP6 plays an important role in the growth of Arabidopsis in Fe-deficient conditions.
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Affiliation(s)
- Jiyu Li
- Department of Biochemistry & Molecular Biology, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
- Institute of Horticulture, Anhui Academy of Agricultural Sciences, Hefei, China
- Key Laboratory of Genetic Improvement and Ecophysiology of Horticultural Crops, Hefei, China
| | - Yuerong Wang
- Department of Biochemistry & Molecular Biology, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Lu Zheng
- Department of Biochemistry & Molecular Biology, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Yun Li
- Department of Biochemistry & Molecular Biology, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Xueli Zhou
- Department of Biochemistry & Molecular Biology, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Jingjun Li
- Department of Biochemistry & Molecular Biology, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Dongfang Gu
- Department of Biochemistry & Molecular Biology, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Ending Xu
- Department of Biochemistry & Molecular Biology, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Yaping Lu
- Department of Biochemistry & Molecular Biology, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Xi Chen
- Department of Biochemistry & Molecular Biology, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
- *Correspondence: Xi Chen, ; Wei Zhang,
| | - Wei Zhang
- Department of Biochemistry & Molecular Biology, College of Life Sciences, Nanjing Agricultural University, Nanjing, China
- *Correspondence: Xi Chen, ; Wei Zhang,
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78
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Zhang X, Kang J, Pang H, Niu L, Lv J. Sulfur mediated improved thiol metabolism, antioxidant enzymes system and reduced chromium accumulation in oilseed rape (Brassica napus L.) shoots. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:35492-35500. [PMID: 30350146 DOI: 10.1007/s11356-018-3517-6] [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] [Received: 03/29/2018] [Accepted: 10/17/2018] [Indexed: 06/08/2023]
Abstract
Chromium (Cr) pollution is at a worrying level in a region of oilseed rape production in China. Sulfur (S) is an indispensable element for plants that has been confirmed to play an important role in regulating plant response to heavy metal stress. The present study was conducted to examine the role of S in alleviating Cr toxicity in oilseed rape. Cr stress strongly induced oxidative stress and inhibited plant growth. Application of S significantly enhanced the tolerance of oilseed rape exposed to Cr stress by activating several detoxification mechanisms including the ascorbate-glutathione (AsA-GSH) enzyme defense system and GSH production. The Cr and phytochelatins (PC) contents in the root under S treatment were markedly higher than those under Cr stress. The transcript abundances of the heavy metal transporters HMA2 and HMA4 were lower under S treatment than under Cr treatment. Most Cr was restricted to roots, and the translocation factor (TF) of Cr was markedly decreased in oilseed rape. In conclusion, our study revealed that S application is advantageous to oilseed rape defense against Cr toxicity and inhibits Cr translocation from roots to shoots.
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Affiliation(s)
- Xu Zhang
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Jingquan Kang
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Hongxi Pang
- College of Agronomy, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Lianmei Niu
- College of Science, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China
| | - Jinyin Lv
- College of Life Sciences, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China.
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79
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Dutta S, Mitra M, Agarwal P, Mahapatra K, De S, Sett U, Roy S. Oxidative and genotoxic damages in plants in response to heavy metal stress and maintenance of genome stability. PLANT SIGNALING & BEHAVIOR 2018; 13:e1460048. [PMID: 29621424 PMCID: PMC6149466 DOI: 10.1080/15592324.2018.1460048] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 03/28/2018] [Indexed: 05/17/2023]
Abstract
Plants, being sessile in nature, are constantly exposed to various environmental stresses, such as solar UV radiations, soil salinity, drought and desiccation, rehydration, low and high temperatures and other vast array of air and soil borne chemicals, industrial waste products, metals and metalloids. These agents, either directly or indirectly via the induction of oxidative stress and overproduction of reactive oxygen species (ROS), frequently perturb the chemical or physical structures of DNA and induce both cytotoxic or genotoxic stresses. Such condition, in turn, leads to genome instability and thus eventually severely affecting plant health and crop yield. With the growing industrialization process and non-judicious use of chemical fertilizers, the heavy metal mediated chemical toxicity has become one of the major environmental threats for the plants around the globe. The heavy metal ions cause damage to the structural, enzymatic and non-enzymatic components of plant cell, often resulting in loss of cell viability, thus negatively impacting plant growth and development. Plants have also evolved with an extensive and highly efficient mechanism to respond and adapt under such heavy metal toxicity mediated stress conditions. In addition to morpho-anatomical, hormonal and biochemical responses, at the molecular level, plants respond to heavy metal stress induced oxidative and genotoxic damage via the rapid change in the expression of the responsive genes at the transcriptional level. Various families of transcription factors play crucial role in triggering such responses. Apart from transcriptional response, epigenetic modifications have also been found to be essential for maintenance of plant genome stability under genotoxic stress. This review represents a comprehensive survey of recent advances in our understanding of plant responses to heavy metal mediated toxicity in general with particular emphasis on the transcriptional and epigenetic responses and highlights the importance of understanding the potential targets in the associated pathways for improved stress tolerance in crops.
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Affiliation(s)
- Subhajit Dutta
- Department of Botany, UGC Centre of Advanced Studies, The University of Burdwan, Golapbag campus, Burdwan – 713104, West Bengal, India
| | - Mehali Mitra
- Department of Botany, UGC Centre of Advanced Studies, The University of Burdwan, Golapbag campus, Burdwan – 713104, West Bengal, India
| | - Puja Agarwal
- Department of Botany, UGC Centre of Advanced Studies, The University of Burdwan, Golapbag campus, Burdwan – 713104, West Bengal, India
| | - Kalyan Mahapatra
- Department of Botany, UGC Centre of Advanced Studies, The University of Burdwan, Golapbag campus, Burdwan – 713104, West Bengal, India
| | - Sayanti De
- Department of Botany, UGC Centre of Advanced Studies, The University of Burdwan, Golapbag campus, Burdwan – 713104, West Bengal, India
| | - Upasana Sett
- Department of Botany, UGC Centre of Advanced Studies, The University of Burdwan, Golapbag campus, Burdwan – 713104, West Bengal, India
| | - Sujit Roy
- Department of Botany, UGC Centre of Advanced Studies, The University of Burdwan, Golapbag campus, Burdwan – 713104, West Bengal, India
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80
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Nikalje GC, Suprasanna P. Coping With Metal Toxicity - Cues From Halophytes. FRONTIERS IN PLANT SCIENCE 2018; 9:777. [PMID: 29971073 PMCID: PMC6018462 DOI: 10.3389/fpls.2018.00777] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 05/22/2018] [Indexed: 05/18/2023]
Abstract
Being the native flora of saline soil, halophytes are well studied for their salt tolerance and adaptation mechanism at the physiological, biochemical, molecular and metabolomic levels. However, these saline habitats are getting contaminated due to various anthropogenic activities like urban waste, agricultural runoff, mining, industrial waste that are rich in toxic metals and metalloids. These toxic metals impose detrimental effects on growth and development of most plant species. Halophytes by virtue of their tolerance to salinity also show high tolerance to heavy metals which is attributed to the enhanced root to shoot metal translocation and bioavailability. Halophytes rapidly uptake toxic ions from the root and transport them toward aerial parts by using different transporters which are involved in metal tolerance and homeostasis. A number of defense related physiological and biochemical strategies are known to be crucial for metal detoxification in halophytes however; there is paucity of information on the molecular regulators. Understanding of the phenomenon of cross-tolerance of salinity with other abiotic stresses in halophytes could very well boost their potential use in phytoremediation. In this article, we present an overview of heavy metal tolerance in case of halophytes, associated mechanisms and cross-tolerance of salinity with other abiotic stresses.
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Affiliation(s)
- Ganesh C. Nikalje
- Department of Botany, R. K. Talreja College of Arts, Science and Commerce, Ulhasnagar, India
| | - Penna Suprasanna
- Nuclear Agriculture and Biotechnology Division, Bhabha Atomic Research Centre, Mumbai, India
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81
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Djeukam CL, Nkongolo K. Expression of Genes Associated with Nickel Resistance in Red Oak (Quercus rubra) Populations from a Metal Contaminated Region. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2018; 100:792-797. [PMID: 29569061 DOI: 10.1007/s00128-018-2328-2] [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: 01/06/2018] [Accepted: 03/19/2018] [Indexed: 06/08/2023]
Abstract
Although many studies have reported mechanisms of resistance to metals in herbaceous species, there is very little information on metal coping strategy in hardwood species such as Quercus rubra. The main objective of this study was to determine the expression of genes associated with nickel resistance in red oak (Q. rubra) populations from metal contaminated and uncontaminated sites in the Northern Ontario. Six genes associated with nickel resistances in model and non-model plants were targeted. Differential expressions of these genes were observed in Q. rubra from all the sites, but association between metal contamination and gene expression was not established. This suggests that the bioavailable amounts of metals found in metal contaminated soils in mining sites in northern Ontario and likely in many mining regions around the world cannot trigger a genetic response in higher plant species.
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Affiliation(s)
| | - Kabwe Nkongolo
- Department of Biology, Laurentian University, Sudbury, ON, P3E 2C6, Canada.
- Biomolecular Sciences Program, Laurentian University, Sudbury, ON, P3E 2C6, Canada.
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82
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Meena M, Aamir M, Kumar V, Swapnil P, Upadhyay R. Evaluation of morpho-physiological growth parameters of tomato in response to Cd induced toxicity and characterization of metal sensitive NRAMP3 transporter protein. ENVIRONMENTAL AND EXPERIMENTAL BOTANY 2018; 148:144-167. [DOI: 10.1016/j.envexpbot.2018.01.007] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
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83
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Burges A, Alkorta I, Epelde L, Garbisu C. From phytoremediation of soil contaminants to phytomanagement of ecosystem services in metal contaminated sites. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2018; 20:384-397. [PMID: 28862473 DOI: 10.1080/15226514.2017.1365340] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Since the emergence of phytoremediation, much research has focused on its development for (i) the removal of metals from soil and/or (ii) the reduction of metal bioavailability, mobility, and ecotoxicity in soil. Here, we review the lights and shades of the two main strategies (i.e., phytoextraction and phytostabilization) currently used for the phytoremediation of metal contaminated soils, irrespective of the level of such contamination. Both strategies face limitations to become successful at commercial scale and, then, often generate skepticism regarding their usefulness. Recent innovative approaches and paradigms are gradually establishing these phytoremediation strategies as suitable options for the management of metal contaminated soils. The combination of these phytotechnologies with a sustainable and profitable site use (a strategy called phytomanagement) grants value to the many benefits that can be obtained during the phytoremediation of metal contaminated sites, such as, for instance, the restoration of important ecosystem services, e.g. nutrient cycling, carbon storage, water flow regulation, erosion control, water purification, fertility maintenance, etc.
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Affiliation(s)
- Aritz Burges
- a Department of Conservation of Natural Resources , NEIKER-Tecnalia, Basque Institute of Agricultural Research and Development, Soil Microbial Ecology Group , Derio , Spain
| | - Itziar Alkorta
- b Department of Biochemistry and Molecular Biology , BIOFISIKA Institute (CSIC-UPV/EHU), University of the Basque Country , Bilbao , Spain
| | - Lur Epelde
- a Department of Conservation of Natural Resources , NEIKER-Tecnalia, Basque Institute of Agricultural Research and Development, Soil Microbial Ecology Group , Derio , Spain
| | - Carlos Garbisu
- a Department of Conservation of Natural Resources , NEIKER-Tecnalia, Basque Institute of Agricultural Research and Development, Soil Microbial Ecology Group , Derio , Spain
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84
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Hoang TK, Probst A, Orange D, Gilbert F, Elger A, Kallerhoff J, Laurent F, Bassil S, Duong TT, Gerino M. Bioturbation effects on bioaccumulation of cadmium in the wetland plant Typha latifolia: A nature-based experiment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 618:1284-1297. [PMID: 29132718 DOI: 10.1016/j.scitotenv.2017.09.237] [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] [Received: 03/31/2017] [Revised: 09/21/2017] [Accepted: 09/22/2017] [Indexed: 06/07/2023]
Abstract
The development of efficient bioremediation techniques to reduce aquatic pollutant load in natural sediment is one of the current challenges in ecological engineering. A nature-based solution for metal bioremediation is proposed through a combination of bioturbation and phytoremediation processes in experimental indoor microcosms. The invertebrates Tubifex tubifex (Oligochaeta Tubificidae) was used as an active ecological engineer for bioturbation enhancement. The riparian plant species Typha latifolia was selected for its efficiency in phyto-accumulating pollutants from sediment. Phytoremediation efficiency was estimated by using cadmium as a conservative pollutant known to bio-accumulate in plants, and initially introduced in the overlying water (20μg Cd/L of cadmium nitrate - Cd(NO3)2·4H2O). Biological sediment reworking by invertebrates' activity was quantified using luminophores (inert particulates). Our results showed that bioturbation caused by tubificid worms' activity followed the bio-conveying transport model with a downward vertical velocity (V) of luminophores ranging from 16.7±4.5 to 18.5±3.9cm·year-1. The biotransport changed the granulometric properties of the surface sediments, and this natural process was still efficient under cadmium contamination. The highest value of Cd enrichment coefficient for plant roots was observed in subsurface sediment layer (below 1cm to 5cm depth) with tubificids addition. We demonstrated that biotransport changed the distribution of cadmium across the sediment column as well as it enhanced the pumping of this metal from the surface to the anoxic sediment layers, thereby increasing the bioaccumulation of cadmium in the root system of Typha latifolia. This therefore highlights the potential of bioturbation as a tool to be considered in future as integrated bioremediation strategies of metallic polluted sediment in aquatic ecosystems.
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Affiliation(s)
- Trung Kien Hoang
- Laboratoire Écologie Fonctionnelle et Environnement (EcoLab), University of Toulouse, UMR5245, CNRS, INPT, UPS, Toulouse, France; Institute of Environmental Technology, Vietnam Academy of Science and Technology, Hanoi, Viet Nam.
| | - Anne Probst
- Laboratoire Écologie Fonctionnelle et Environnement (EcoLab), University of Toulouse, UMR5245, CNRS, INPT, UPS, Toulouse, France
| | - Didier Orange
- Eco&Sols, University of Montpellier, UMR210-IRD, INRA, CIRAD, Supagro, Montpellier, France; USTH, Vietnam France University, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Franck Gilbert
- Laboratoire Écologie Fonctionnelle et Environnement (EcoLab), University of Toulouse, UMR5245, CNRS, INPT, UPS, Toulouse, France
| | - Arnaud Elger
- Laboratoire Écologie Fonctionnelle et Environnement (EcoLab), University of Toulouse, UMR5245, CNRS, INPT, UPS, Toulouse, France
| | - Jean Kallerhoff
- Laboratoire Écologie Fonctionnelle et Environnement (EcoLab), University of Toulouse, UMR5245, CNRS, INPT, UPS, Toulouse, France
| | | | - Sabina Bassil
- Laboratoire Écologie Fonctionnelle et Environnement (EcoLab), University of Toulouse, UMR5245, CNRS, INPT, UPS, Toulouse, France
| | - Thi Thuy Duong
- Institute of Environmental Technology, Vietnam Academy of Science and Technology, Hanoi, Viet Nam; USTH, Vietnam France University, Vietnam Academy of Science and Technology, Hanoi, Vietnam; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, Viet Nam
| | - Magali Gerino
- Laboratoire Écologie Fonctionnelle et Environnement (EcoLab), University of Toulouse, UMR5245, CNRS, INPT, UPS, Toulouse, France; USTH, Vietnam France University, Vietnam Academy of Science and Technology, Hanoi, Vietnam.
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85
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Kalubi KN, Michael P, Omri A. Analysis of gene expression in red maple (Acer rubrum) and trembling aspen (Populus tremuloides) populations from a mining region. Genes Genomics 2018; 40:1127-1136. [PMID: 30315518 DOI: 10.1007/s13258-018-0670-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 02/07/2018] [Indexed: 10/18/2022]
Abstract
The Greater Sudbury Region has been known as one of the most ecologically disturbed areas in Canada for the past century. Plant adaptation to environmental stressors often results in modifications in gene expression at the transcriptional level. The main objective of the present study was to compare the expression of genes associated with nickel resistance in Acer rubrum and Populus tremuloides growing in areas contaminated and uncontaminated with metals. Primers targeting Nramps4, Nas 3, At2G, MRP4 and alpha-tubulin genes were used to amplify cDNA of both species. The expression of the At2G gene, was 2× and 9× higher in P. tremuloides than in A. rubrum for St. Charles (uncontaminated site) and Kelly Lake (metal contaminated site), respectively. There was a much smaller difference between the two species for the Nramps 4 gene as its expression was 2.5× and 3× higher in P. tremuloides compared to A. rubrum from St. Charles and Kelly Lake, respectively. The same trend was observed for the MRP4 gene whose expression was 2× and 14× higher in P. tremuloides than in A. rubrum from St. Charles and Kelly Lake, respectively. For the Nas 3 gene, the expression was similar in both sites. This gene was upregulated 11× and 10× in P. tremuloides compared to A. rubrum in samples from St. Charles and Kelly Lake, respectively. In general, no significant difference was observed between the metal contaminated and uncontaminated sites for gene expression. In depth analysis revealed that AT2G and MRP4 genes were significantly down regulated in A. rubrum from the metal contaminated sites compared to those from uncontaminated areas, but environmental factors driving this differential gene expression couldn't be established.
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Affiliation(s)
- K N Kalubi
- Biomolecular Sciences Program, Laurentian University, Sudbury, ON, P3E 2C6, Canada
| | - P Michael
- Biomolecular Sciences Program, Laurentian University, Sudbury, ON, P3E 2C6, Canada
| | - A Omri
- Biomolecular Sciences Program, Laurentian University, Sudbury, ON, P3E 2C6, Canada.
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86
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Andresen E, Peiter E, Küpper H. Trace metal metabolism in plants. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:909-954. [PMID: 29447378 DOI: 10.1093/jxb/erx465] [Citation(s) in RCA: 170] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 12/04/2017] [Indexed: 05/18/2023]
Abstract
Many trace metals are essential micronutrients, but also potent toxins. Due to natural and anthropogenic causes, vastly different trace metal concentrations occur in various habitats, ranging from deficient to toxic levels. Therefore, one focus of plant research is on the response to trace metals in terms of uptake, transport, sequestration, speciation, physiological use, deficiency, toxicity, and detoxification. In this review, we cover most of these aspects for the essential micronutrients copper, iron, manganese, molybdenum, nickel, and zinc to provide a broader overview than found in other recent reviews, to cross-link aspects of knowledge in this very active research field that are often seen in a separated way. For example, individual processes of metal usage, deficiency, or toxicity often were not mechanistically interconnected. Therefore, this review also aims to stimulate the communication of researchers following different approaches, such as gene expression analysis, biochemistry, or biophysics of metalloproteins. Furthermore, we highlight recent insights, emphasizing data obtained under physiologically and environmentally relevant conditions.
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Affiliation(s)
- Elisa Andresen
- Biology Centre, Czech Academy of Sciences, Institute of Plant Molecular Biology, Department of Plant Biophysics and Biochemistry, Branišovská, Ceské Budejovice, Czech Republic
| | - Edgar Peiter
- Martin Luther University Halle-Wittenberg, Institute of Agricultural and Nutritional Sciences, Plant Nutrition Laboratory, Betty-Heimann-Strasse, Halle (Saale), Germany
| | - Hendrik Küpper
- Biology Centre, Czech Academy of Sciences, Institute of Plant Molecular Biology, Department of Plant Biophysics and Biochemistry, Branišovská, České Budějovice, Czech Republic
- University of South Bohemia, Faculty of Science, Department of Experimental Plant Biology, Branišovská, České Budějovice, Czech Republic
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87
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Ruzik L, Kwiatkowski P. Application of CE-ICP-MS and CE-ESI-MS/MS for identification of Zn-binding ligands in Goji berries extracts. Talanta 2018; 183:102-107. [PMID: 29567150 DOI: 10.1016/j.talanta.2018.02.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 02/06/2018] [Accepted: 02/08/2018] [Indexed: 02/07/2023]
Abstract
The identification of groups of ligands binding metals is a crucial issue for the better understanding of their bioaccessibility. In the current study, we have intended an approach for identification of Zn-binding ligands based on using capillary electrophoresis combined with inductively coupled plasma mass spectrometry (CE-ICP-MS) and tandem electrospray ionization mass spectrometry (CE-ESI-MS/MS). The approach, which featured the use of the coupling of capillary electrophoresis with inductively coupled plasma mass spectrometry allows to separate and observe zinc ions present in complexes with respect to their size and charge and to identify nine compounds with zinc isotopic profile. CE-ICP-MS provides us with information about presence of zinc species and elemental information about zinc distribution. CE-ESI-MS/MS provide us with information about the most favorable Zn binding ligands: amino acids, flavonols, stilbenoids, fenolic acids and carotenoids. The presented work is the continuation of previous studies based on using LC-ESI-MS/MS, though, now we presented a new solutions with the possibility of changing detectors without changing the separation techniques, what is important without re-optimizing the method. The new presented method allows to identify the zinc-binding ligands in shorter time.
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Affiliation(s)
- Lena Ruzik
- Chair of Analytical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
| | - Piotr Kwiatkowski
- Chair of Analytical Chemistry, Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
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88
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Neeraja CN, Kulkarni KS, Madhu Babu P, Sanjeeva Rao D, Surekha K, Ravindra Babu V. Transporter genes identified in landraces associated with high zinc in polished rice through panicle transcriptome for biofortification. PLoS One 2018; 13:e0192362. [PMID: 29394277 PMCID: PMC5796704 DOI: 10.1371/journal.pone.0192362] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 01/21/2018] [Indexed: 11/27/2022] Open
Abstract
Polished rice is poor source of micronutrients, however wide genotypic variability exists for zinc uptake and remobilization and zinc content in brown and polished grains in rice. Two landraces (Chittimutyalu and Kala Jeera Joha) and one popular improved variety (BPT 5204) were grown under zinc sufficient soil and their analyses showed high zinc in straw of improved variety, but high zinc in polished rice in landraces suggesting better translocation ability of zinc into the grain in landraces. Transcriptome analyses of the panicle tissue showed 41182 novel transcripts across three samples. Out of 1011 differentially expressed exclusive transcripts by two landraces, 311 were up regulated and 534 were down regulated. Phosphate transporter-exporter (PHO), proton-coupled peptide transporters (POT) and vacuolar iron transporter (VIT) showed enhanced and significant differential expression in landraces. Out of 24 genes subjected to quantitative real time analyses for confirmation, eight genes showed significant differential expression in landraces. Through mapping, six rice microsatellite markers spanning the genomic regions of six differentially expressed genes were validated for their association with zinc in brown and polished rice using recombinant inbred lines (RIL) of BPT 5204/Chittimutyalu. Thus, this study reports repertoire of genes associated with high zinc in polished rice and a proof concept for deployment of transcriptome information for validation in mapping population and its use in marker assisted selection for biofortification of rice with zinc.
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Affiliation(s)
- C. N. Neeraja
- Department of Crop Improvement, ICAR-Indian Institute of Rice Research, Rajendranagar, Telangana, Hyderabad, India
| | - Kalyani S. Kulkarni
- Department of Crop Improvement, ICAR-Indian Institute of Rice Research, Rajendranagar, Telangana, Hyderabad, India
| | - P. Madhu Babu
- Department of Crop Improvement, ICAR-Indian Institute of Rice Research, Rajendranagar, Telangana, Hyderabad, India
| | - D. Sanjeeva Rao
- Department of Crop Improvement, ICAR-Indian Institute of Rice Research, Rajendranagar, Telangana, Hyderabad, India
| | - K. Surekha
- Department of Crop Improvement, ICAR-Indian Institute of Rice Research, Rajendranagar, Telangana, Hyderabad, India
| | - V Ravindra Babu
- Department of Crop Improvement, ICAR-Indian Institute of Rice Research, Rajendranagar, Telangana, Hyderabad, India
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89
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Papierniak A, Kozak K, Kendziorek M, Barabasz A, Palusińska M, Tiuryn J, Paterczyk B, Williams LE, Antosiewicz DM. Contribution of NtZIP1-Like to the Regulation of Zn Homeostasis. FRONTIERS IN PLANT SCIENCE 2018; 9:185. [PMID: 29503658 PMCID: PMC5820362 DOI: 10.3389/fpls.2018.00185] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 01/31/2018] [Indexed: 05/20/2023]
Abstract
Tobacco has frequently been suggested as a candidate plant species for use in phytoremediation of metal contaminated soil but knowledge on the regulation of its metal-homeostasis is still in the infancy. To identify new tobacco metal transport genes that are involved in Zn homeostasis a bioinformatics study using the tobacco genome information together with expression analysis was performed. Ten new tobacco metal transport genes from the ZIP, NRAMP, MTP, and MRP/ABCC families were identified with expression levels in leaves that were modified by exposure to Zn excess. Following exposure to high Zn there was upregulation of NtZIP11-like, NtNRAMP3, three isoforms of NtMTP2, three MRP/ABCC genes (NtMRP5-like, NtMRP10-like, and NtMRP14 like) and downregulation of NtZIP1-like and NtZIP4. This suggests their involvement in several processes governing the response to Zn-related stress and in the efficiency of Zn accumulation (uptake, sequestration, and redistribution). Further detailed analysis of NtZIP1-like provided evidence that it is localized at the plasma membrane and is involved in Zn but not Fe and Cd transport. NtZIP1-like is expressed in the roots and shoots, and is regulated developmentally and in a tissue-specific manner. It is highly upregulated by Zn deficiency in the leaves and the root basal region but not in the root apical zone (region of maturation and absorption containing root hairs). Thus NtZIP1-like is unlikely to be responsible for Zn uptake by the root apical region but rather in the uptake by root cells within the already mature basal zone. It is downregulated by Zn excess suggesting it is involved in a mechanism to protect the root and leaf cells from accumulating excess Zn.
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Affiliation(s)
- Anna Papierniak
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Katarzyna Kozak
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Maria Kendziorek
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Anna Barabasz
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Małgorzata Palusińska
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Jerzy Tiuryn
- Faculty of Mathematics, Informatics, and Mechanics, University of Warsaw, Warsaw, Poland
| | - Bohdan Paterczyk
- Laboratory of Electron and Confocal Microscopy, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | | | - Danuta M. Antosiewicz
- Institute of Experimental Plant Biology and Biotechnology, Faculty of Biology, University of Warsaw, Warsaw, Poland
- *Correspondence: Danuta M. Antosiewicz,
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90
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Koźmińska A, Wiszniewska A, Hanus-Fajerska E, Muszyńska E. Recent strategies of increasing metal tolerance and phytoremediation potential using genetic transformation of plants. PLANT BIOTECHNOLOGY REPORTS 2018; 12:1-14. [PMID: 29503668 PMCID: PMC5829118 DOI: 10.1007/s11816-017-0467-2] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 12/18/2017] [Indexed: 05/18/2023]
Abstract
Avoidance and reduction of soil contamination with heavy metals is one of the most serious global challenges. Nowadays, science offers us new opportunities of utilizing plants to extract toxic elements from the soil by means of phytoremediation. Plant abilities to uptake, translocate, and transform heavy metals, as well as to limit their toxicity, may be significantly enhanced via genetic engineering. This paper provides a comprehensive review of recent strategies aimed at the improvement of plant phytoremediation potential using plant transformation and employing current achievements in nuclear and cytoplasmic genome transformation. Strategies for obtaining plants suitable for effective soil clean-up and tolerant to excessive concentrations of heavy metals are critically assessed. Promising directions in genetic manipulations, such as gene silencing and cis- and intragenesis, are also discussed. Moreover, the ways of overcoming disadvantages of phytoremediation using genetic transformation approachare proposed. The knowledge gathered here could be useful for designing new research aimed at biotechnological improvement of phytoremediation efficiency.
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Affiliation(s)
- Aleksandra Koźmińska
- Institute of Plant Biology and Biotechnology, Faculty of Biotechnology and Horticulture, University of Agriculture in Krakow, Al. 29 Listopada 54, 31-425 Kraków, Poland
| | - Alina Wiszniewska
- Institute of Plant Biology and Biotechnology, Faculty of Biotechnology and Horticulture, University of Agriculture in Krakow, Al. 29 Listopada 54, 31-425 Kraków, Poland
| | - Ewa Hanus-Fajerska
- Institute of Plant Biology and Biotechnology, Faculty of Biotechnology and Horticulture, University of Agriculture in Krakow, Al. 29 Listopada 54, 31-425 Kraków, Poland
| | - Ewa Muszyńska
- Department of Botany, Faculty of Agriculture and Biology, Warsaw University of Life Sciences (SGGW), Nowoursynowska 159, Building 37, 02-776 Warsaw, Poland
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91
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Jain S, Muneer S, Guerriero G, Liu S, Vishwakarma K, Chauhan DK, Dubey NK, Tripathi DK, Sharma S. Tracing the role of plant proteins in the response to metal toxicity: a comprehensive review. PLANT SIGNALING & BEHAVIOR 2018; 13:e1507401. [PMID: 30188762 PMCID: PMC6204846 DOI: 10.1080/15592324.2018.1507401] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Plants are sessile in nature, but are capable to evade from high level concentration of heavy metals like Cd, Hg, Cu, through various metabolic pathways. Some of the pathways regulate normal metabolism in plants, whereas others are required for for their survival under metal toxicity. Different plant proteins act as transporters to transfer metal from one organelle to the other and further eliminate it out from the plants. Initially, exposure of heavy metals/metalloids to plants lead to over expression of proteins which in turn stimulate other stress-related genes. Further, they activate signalling mechanism like MAPK cascade, Cd-Calmodulin signalling pathway, and oxidation signalling pathway that lead to generation of ROS (reactive oxygen species). Once these ROS (highly unstable) are formed, they generate free radicals which react with macromolecules like proteins and DNA. This has negative impact on plant growth and leads to ageing and, eventually, cell death. The uncontrolled, destructive processes damage plants physiologically and ultimately lead to oxidative stress. Activation of antioxidant enzymes like SOD (superoxide dismutase) and CAT (catalase) allows plants to cope under oxidative stress conditions. Among plant proteins, some of the antioxidant enzymes like glutathione, and APX (ascorbate peroxidase) play defensive roles against abiotic stress in plants. Chaperones help in protein folding to maintain protein stability under stress conditions. With this background, the present review gives a brief account of the functions, localization and expression pattern of plant proteins against metal/metalloid toxicity. Moreover, the aim of this review is also to summarize the cutting edge research of plant protein and metal interfaces and their future prospects.
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Affiliation(s)
- Shruti Jain
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Allahabad, India
| | - Sowbiya Muneer
- Department of Horticulture, Gyeongsang National University, Jinju, Korea
- Department of Agriculture Engineering, Centre for Agricultural Innovations and Advanced Learning, Vellore Institute of Technology, Vellore, India
| | - Gea Guerriero
- Environmental Research and Innovation Department, Luxembourg Institute of Science and Technology, Esch/Alzette, Luxembourg
| | - Shiliang Liu
- College of Landscape Architecture, Sichuan Agricultural University, Chengdu, China
| | - Kanchan Vishwakarma
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Allahabad, India
| | - Devendra Kumar Chauhan
- D D Pant Interdisciplinary Research Laboratory, Department of Botany, University of Allahabad, Allahabad, India
| | - Nawal Kishore Dubey
- Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi, India
| | - Durgesh Kumar Tripathi
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Allahabad, India
- Amity Institute of Organic Agriculture (AIOA), Amity University, Noida, Uttar Pradesh
- CONTACT Durgesh Kumar Tripathi ; Shivesh Sharma ; Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, 211004 Allahabad, India
| | - Shivesh Sharma
- Department of Biotechnology, Motilal Nehru National Institute of Technology Allahabad, Allahabad, India
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92
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Bothe H, Słomka A. Divergent biology of facultative heavy metal plants. JOURNAL OF PLANT PHYSIOLOGY 2017; 219:45-61. [PMID: 29028613 DOI: 10.1016/j.jplph.2017.08.014] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 08/29/2017] [Accepted: 08/30/2017] [Indexed: 05/04/2023]
Abstract
Among heavy metal plants (the metallophytes), facultative species can live both in soils contaminated by an excess of heavy metals and in non-affected sites. In contrast, obligate metallophytes are restricted to polluted areas. Metallophytes offer a fascinating biology, due to the fact that species have developed different strategies to cope with the adverse conditions of heavy metal soils. The literature distinguishes between hyperaccumulating, accumulating, tolerant and excluding metallophytes, but the borderline between these categories is blurred. Due to the fact that heavy metal soils are dry, nutrient limited and are not uniform but have a patchy distribution in many instances, drought-tolerant or low nutrient demanding species are often regarded as metallophytes in the literature. In only a few cases, the concentrations of heavy metals in soils are so toxic that only a few specifically adapted plants, the genuine metallophytes, can cope with these adverse soil conditions. Current molecular biological studies focus on the genetically amenable and hyperaccumulating Arabidopsis halleri and Noccaea (Thlaspi) caerulescens of the Brassicaceae. Armeria maritima ssp. halleri utilizes glands for the excretion of heavy metals and is, therefore, a heavy metal excluder. The two endemic zinc violets of Western Europe, Viola lutea ssp. calaminaria of the Aachen-Liège area and Viola lutea ssp. westfalica of the Pb-Cu-ditch of Blankenrode, Eastern Westphalia, as well as Viola tricolor ecotypes of Eastern Europe, keep their cells free of excess heavy metals by arbuscular mycorrhizal fungi which bind heavy metals. The Caryophyllaceae, Silene vulgaris f. humilis and Minuartia verna, apparently discard leaves when overloaded with heavy metals. All Central European metallophytes have close relatives that grow in areas outside of heavy metal soils, mainly in the Alps, and have, therefore, been considered as relicts of the glacial epoch in the past. However, the current literature favours the idea that hyperaccumulation of heavy metals serves plants as deterrent against attack by feeding animals (termed elemental defense hypothesis). The capability to hyperaccumulate heavy metals in A. halleri and N. caerulescens is achieved by duplications and alterations of the cis-regulatory properties of genes coding for heavy metal transporting/excreting proteins. Several metallophytes have developed ecotypes with a varying content of such heavy metal transporters as an adaption to the specific toxicity of a heavy metal site.
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Affiliation(s)
- Hermann Bothe
- Botanical Institute, The University of Cologne, Zuelpicher Str. 47b, 50674 Cologne, Germany.
| | - Aneta Słomka
- Department of Plant Cytology and Embryology, Jagiellonian University, Gronostajowa 9 Str., 30-387 Cracow, Poland.
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93
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Sone Y, Uraguchi S, Takanezawa Y, Nakamura R, Pan-Hou H, Kiyono M. Cysteine and histidine residues are involved in Escherichia coli Tn 21 MerE methylmercury transport. FEBS Open Bio 2017; 7:1994-1999. [PMID: 29226085 PMCID: PMC5715351 DOI: 10.1002/2211-5463.12341] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 10/05/2017] [Accepted: 10/24/2017] [Indexed: 11/29/2022] Open
Abstract
Bacterial resistance to mercury compounds (mercurials) is mediated by proteins encoded by mercury resistance (mer) operons. Six merE variants with site‐directed mutations were constructed to investigate the roles of the cysteine and histidine residues in MerE protein during mercurial transport. By comparison of mercurial uptake by the cell with intact and/or variant MerE, we showed that the cysteine pair in the first transmembrane domain was critical for the transport of both Hg(II) and CH3Hg(I). Also, the histidine residue located near to the cysteine pair was critical for Hg(II) transport, whereas the histidine residue located on the periplasmic side was critical for CH3Hg(I) transport. Thus, enhanced mercurial uptake mediated by MerE may be a promising strategy for the design of new biomass for use in the bioremediation of mercurials in the environment.
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Affiliation(s)
- Yuka Sone
- Department of Public Health School of Pharmacy Kitasato University Tokyo Japan
| | - Shimpei Uraguchi
- Department of Public Health School of Pharmacy Kitasato University Tokyo Japan
| | - Yasukazu Takanezawa
- Department of Public Health School of Pharmacy Kitasato University Tokyo Japan
| | - Ryosuke Nakamura
- Department of Public Health School of Pharmacy Kitasato University Tokyo Japan
| | | | - Masako Kiyono
- Department of Public Health School of Pharmacy Kitasato University Tokyo Japan
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94
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Uptake of heavy metals by Typha capensis from wetland sites polluted by effluent from mineral processing plants: implications of metal-metal interactions. 3 Biotech 2017; 7:286. [PMID: 28828293 DOI: 10.1007/s13205-017-0916-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 08/09/2017] [Indexed: 10/19/2022] Open
Abstract
The aim of the present work was to demonstrate the existence of metal-metal interactions in plants and their implications for the absorption of toxic elements like Cr. Typha capensis, a good accumulator of heavy metals, was chosen for the study. Levels of Fe, Cr, Ni, Cd, Pb, Cu and Zn were determined in the soil and roots, rhizomes, stems and leaves of T. capensis from three Sites A, B and C polluted by effluent from a chrome ore processing plant, a gold ore processing plant, and a nickel ore processing plant, respectively. The levels of Cr were extremely high at Site A at 5415 and 786-16,047 μg g-1 dry weight in the soil and the plant, respectively, while the levels of Ni were high at Site C at 176 and 24-891 μg g-1 in the soil and the plant, respectively. The levels of Fe were high at all three sites at 2502-7500 and 906-13,833 μg g-1 in the soil and plant, respectively. For the rest of the metals, levels were modest at 8.5-148 and 2-264 μg g-1 in the soil and plant, respectively. Pearson's correlation analysis confirmed mutual synergistic metal-metal interactions in the uptake of Zn, Cu, Co, Ni, Fe, and Cr, which are attributed to the similarity in the radii and coordination geometry of the cations of these elements. The implications of such metal-metal interactions (or effects of one metal on the behaviour of another) on the uptake of Cr, a toxic element, and possible Cr detoxification mechanism within the plant, are discussed.
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95
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Singh N, Yadav KK, Rajasekharan R. Effect of zinc deprivation on the lipid metabolism of budding yeast. Curr Genet 2017; 63:977-982. [PMID: 28500379 DOI: 10.1007/s00294-017-0704-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 05/04/2017] [Accepted: 05/07/2017] [Indexed: 12/21/2022]
Abstract
Zinc is an essential micronutrient for all living cells. It serves as a structural and catalytic cofactor for numerous proteins, hence maintaining a proper level of cellular zinc is essential for normal functioning of the cell. Zinc homeostasis is sustained through various ways under severe zinc-deficient conditions. Zinc-dependent proteins play an important role in biological systems and limitation of zinc causes a drastic change in their expression. In budding yeast, a zinc-responsive transcription factor Zap1p controls the expression of genes required for uptake and mobilization of zinc under zinc-limiting conditions. It also regulates the polar lipid levels under zinc-limiting conditions to maintain membrane integrity. Deletion of ZAP1 causes an increase in triacylglyerol levels which is due to the increased biosynthesis of acetate that serves as a precursor for triacylglycerol biosynthesis. In this review, we expanded our recent work role of Zap1p in nonpolar lipid metabolism of budding yeast.
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Affiliation(s)
- Neelima Singh
- Department of Lipid Science, Council of Scientific and Industrial Research (CSIR), Central Food Technological Research Institute (CFTRI), Mysore, 570020, Karnataka, India
| | - Kamlesh Kumar Yadav
- Department of Lipid Science, Council of Scientific and Industrial Research (CSIR), Central Food Technological Research Institute (CFTRI), Mysore, 570020, Karnataka, India
| | - Ram Rajasekharan
- Department of Lipid Science, Council of Scientific and Industrial Research (CSIR), Central Food Technological Research Institute (CFTRI), Mysore, 570020, Karnataka, India.
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96
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Gopalapillai Y, Hale BA. Internal versus External Dose for Describing Ternary Metal Mixture (Ni, Cu, Cd) Chronic Toxicity to Lemna minor. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:5233-5241. [PMID: 28383260 DOI: 10.1021/acs.est.6b06608] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Simultaneous determinations of internal dose ([M]tiss) and external doses ([M]tot, {M2+} in solution) were conducted to study ternary mixture (Ni, Cu, Cd) chronic toxicity to Lemna minor in alkaline solution (pH 8.3). Also, concentration addition (CA) based on internal dose was evaluated as a tool for risk assessment of metal mixture. Multiple regression analysis of dose versus root growth inhibition, as well as saturation binding kinetics, provided insight into interactions. Multiple regressions were simpler for [M]tiss than [M]tot and {M2+}, and along with saturation kinetics to the internal biotic ligand(s) in the cytoplasm, they indicated that Ni-Cu-Cd competed for uptake into plant, but once inside, only Cu-Cd shared a binding site. Copper inorganic complexes (hydroxides, carbonates) played a role in metal bioavailability in single metal exposure but not in mixtures. Regardless of interactions, the current regulatory approach of using CA based on [M]tot can sufficiently predict mixture toxicity (∑TU close to 1), but CA based on [M]tiss was closest to unity across a range of doses. Internal dose integrates all metal-metal interactions in solution and during uptake into the organism, thereby providing a more direct metric describing toxicity.
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Affiliation(s)
- Yamini Gopalapillai
- School of Environmental Sciences, University of Guelph , Guelph, Ontario N1G 2W1, Canada
| | - Beverley A Hale
- School of Environmental Sciences, University of Guelph , Guelph, Ontario N1G 2W1, Canada
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97
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Sarwar N, Imran M, Shaheen MR, Ishaque W, Kamran MA, Matloob A, Rehim A, Hussain S. Phytoremediation strategies for soils contaminated with heavy metals: Modifications and future perspectives. CHEMOSPHERE 2017; 171:710-721. [PMID: 28061428 DOI: 10.1016/j.chemosphere.2016.12.116] [Citation(s) in RCA: 522] [Impact Index Per Article: 74.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Revised: 11/27/2016] [Accepted: 12/22/2016] [Indexed: 05/19/2023]
Abstract
Presence of heavy metals in agricultural soils is of major environmental concern and a great threat to life on the earth. A number of human health risks are associated with heavy metals regarding their entry into food chain. Various physical, chemical and biological techniques are being used to remove heavy metals and metalloids from soils. Among them, phytoremediation is a good strategy to harvest heavy metals from soils and have been proven as an effective and economical technique. In present review, we discussed various sources and harmful effects of some important heavy metals and metalloids, traditional phytoremediation strategies, mechanisms involved in phytoremediation of these metals, limitations and some recent advances in phytoremediation approaches. Since traditional phytoremediation approach poses some limitations regarding their applications at large scale, so there is a dire need to modify this strategy using modern chemical, biological and genetic engineering tools. In view of above, the present manuscript brings both traditional and advanced phytoremediation techniques together in order to compare, understand and apply these strategies effectively to exclude heavy metals from soil keeping in view the economics and effectiveness of phytoremediation strategies.
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Affiliation(s)
- Nadeem Sarwar
- Nuclear Institute for Agriculture and Biology (NIAB), Faisalabad, Pakistan
| | - Muhammad Imran
- Department of Soil Science, Bahauddin Zakariya University, Multan, Pakistan.
| | - Muhammad Rashid Shaheen
- Department of Horticultural Sciences, University College of Agriculture and Environmental Sciences, The Islamia University of Bahawalpur, Pakistan
| | - Wajid Ishaque
- Nuclear Institute for Agriculture and Biology (NIAB), Faisalabad, Pakistan
| | | | - Amar Matloob
- Department of Agronomy, Muhammad Nawaz Shareef University of Agriculture, Multan, Pakistan
| | - Abdur Rehim
- Department of Soil Science, Bahauddin Zakariya University, Multan, Pakistan
| | - Saddam Hussain
- College of Resources and Environment, Huazhong Agricultural University, Wuhan, Hubei, China; Department of Agronomy, University of Agriculture, Faisalabad, Pakistan.
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98
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Shahid M, Dumat C, Khalid S, Niazi NK, Antunes PMC. Cadmium Bioavailability, Uptake, Toxicity and Detoxification in Soil-Plant System. REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2017; 241:73-137. [PMID: 27300014 DOI: 10.1007/398_2016_8] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
This review summarizes the findings of the most recent studies, published from 2000 to 2016, which focus on the biogeochemical behavior of Cd in soil-plant systems and its impact on the ecosystem. For animals and people not subjected to a Cd-contaminated environment, consumption of Cd contaminated food (vegetables, cereals, pulses and legumes) is the main source of Cd exposure. As Cd does not have any known biological function, and can further cause serious deleterious effects both in plants and mammalian consumers, cycling of Cd within the soil-plant system is of high global relevance.The main source of Cd in soil is that which originates as emissions from various industrial processes. Within soil, Cd occurs in various chemical forms which differ greatly with respect to their lability and phytoavailability. Cadmium has a high phytoaccumulation index because of its low adsorption coefficient and high soil-plant mobility and thereby may enter the food chain. Plant uptake of Cd is believed to occur mainly via roots by specific and non-specific transporters of essential nutrients, as no Cd-specific transporter has yet been identified. Within plants, Cd causes phytotoxicity by decreasing nutrient uptake, inhibiting photosynthesis, plant growth and respiration, inducing lipid peroxidation and altering the antioxidant system and functioning of membranes. Plants tackle Cd toxicity via different defense strategies such as decreased Cd uptake or sequestration into vacuoles. In addition, various antioxidants combat Cd-induced overproduction of ROS. Other mechanisms involve the induction of phytochelatins, glutathione and salicylic acid.
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Affiliation(s)
- Muhammad Shahid
- Department of Environmental Sciences, COMSATS Institute of Information Technology, Vehari, 61100, Pakistan.
| | - Camille Dumat
- Centre d'Etude et de Recherche Travail Organisation Pouvoir (CERTOP), UMR5044, Université J. Jaurès-Toulouse II, 5 Allée Antonio Machado, 31058, Toulouse Cedex 9, France
| | - Sana Khalid
- Department of Environmental Sciences, COMSATS Institute of Information Technology, Vehari, 61100, Pakistan
| | - Nabeel Khan Niazi
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad, 38040, Pakistan
- Southern Cross GeoScience, Southern Cross University, Lismore, 2480, NSW, Australia
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99
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Kumar V, Sharma A, Dhunna G, Chawla A, Bhardwaj R, Thukral AK. A tabulated review on distribution of heavy metals in various plants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:2210-2260. [PMID: 27726084 DOI: 10.1007/s11356-016-7747-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 09/18/2016] [Indexed: 06/06/2023]
Abstract
Plants are a rich source of elements, and knowledge of their elemental composition determines their use for various purposes, especially for food and medicine. Therefore, it is necessary to create a database of the elemental composition of plants. The present review focuses on the concentration of various heavy metals as reported by various workers from time to time by using different sophisticated techniques. Cluster analysis was applied on the basis of mean values of heavy metals in plants. Co, Cu, and Cr have similar proximities. Cluster analysis was also applied to different families on the basis of their heavy metal contents. Elaeagnaceae, Adoxaceae, Thymelaeaceae, Cupressaceae, and Acoraceae had close proximities with each other. First three components of principal component analysis explained 95.7 % of the total variance. Factor analysis explained four underlying factors for heavy metal analysis. Factor 1 explained for 26.5 % of the total variance and had maximum loadings on Co, Cu, and Cr. Of the total variance, 21.7 % was explained by factor 2 and had maximum loadings on Zn and Cd. Factor 3 accounted for 19.2 % of the total variance and had maximum loadings on Ni and Pb. Mn had maximum loading on factor 4. The mean values of heavy metals as listed in this paper are Cu (18.7 μg/g dw), Mn (99.67 μg/g dw), Cr (22.9 μg/g dw), Co (19.7 μg/g dw), As (1.25 μg/g dw), Hg (0.17 μg/g dw), Zn (94.0 μg/g dw), Pb (6.93 μg/g dw), Cd (26.9 μg/g dw), Ni (19.9 μg/g dw), and Sb (0.25 μg/g dw).
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Affiliation(s)
- Vinod Kumar
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, 143005, India.
| | - Anket Sharma
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, 143005, India
| | - Geeta Dhunna
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, 143005, India
| | - Amit Chawla
- High Altitude Biology Division, CSIR Institute of Himalayan Bioresource Technology (Council for Scientific and Industrial Research), Palampur, Himachal Pradesh, 176061, India
| | - Renu Bhardwaj
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, 143005, India.
| | - Ashwani Kumar Thukral
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, Punjab, 143005, India
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Smith AT, Ross MO, Hoffman BM, Rosenzweig AC. Metal Selectivity of a Cd-, Co-, and Zn-Transporting P 1B-type ATPase. Biochemistry 2016; 56:85-95. [PMID: 28001366 DOI: 10.1021/acs.biochem.6b01022] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The P1B-ATPases, a family of transmembrane metal transporters important for transition metal homeostasis in all organisms, are subdivided into classes based on sequence conservation and metal specificity. The multifunctional P1B-4-ATPase CzcP is part of the cobalt, zinc, and cadmium resistance system from the metal-tolerant, model organism Cupriavidus metallidurans. Previous work revealed the presence of an unusual soluble metal-binding domain (MBD) at the CzcP N-terminus, but the nature, extent, and selectivity of the transmembrane metal-binding site (MBS) of CzcP have not been resolved. Using homology modeling, we show that four wholly conserved amino acids from the transmembrane (TM) domain (Met254, Ser474, Cys476, and His807) are logical candidates for the TM MBS, which may communicate with the MBD via interactions with the first TM helix. Metal-binding analyses indicate that wild-type (WT) CzcP has three MBSs, and data on N-terminally truncated (ΔMBD) CzcP suggest the presence of a single TM MBS. Electronic absorption and electron paramagnetic resonance spectroscopic analyses of ΔMBD CzcP and variant proteins thereof provide insight into the details of Co2+ coordination by the TM MBS. These spectroscopic data, combined with in vitro functional studies of WT and variant CzcP proteins, show that the side chains of Met254, Cys476, and His807 contribute to Cd2+, Co2+, and Zn2+ binding and transport, whereas the side chain of Ser474 appears to play a minimal role. By comparison to other P1B-4-ATPases, we suggest that an evolutionarily adapted flexibility in the TM region likely afforded CzcP the ability to transport Cd2+ and Zn2+ in addition to Co2+.
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Affiliation(s)
- Aaron T Smith
- Departments of Molecular Biosciences and of Chemistry, Northwestern University , Evanston, Illinois 60208, United States
| | - Matthew O Ross
- Departments of Molecular Biosciences and of Chemistry, Northwestern University , Evanston, Illinois 60208, United States
| | - Brian M Hoffman
- Departments of Molecular Biosciences and of Chemistry, Northwestern University , Evanston, Illinois 60208, United States
| | - Amy C Rosenzweig
- Departments of Molecular Biosciences and of Chemistry, Northwestern University , Evanston, Illinois 60208, United States
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