1
|
Praise S, Miyazawa M, Phung LD, Nishiyama M, Kumar A, Watanabe T. Impact of nCuO containing treated wastewater on soil microbes and dissolved organic matter in paddy field leachate. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 341:122923. [PMID: 37977365 DOI: 10.1016/j.envpol.2023.122923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 11/08/2023] [Accepted: 11/09/2023] [Indexed: 11/19/2023]
Abstract
Using treated wastewater (TWW) resources in agriculture is a major pathway for disseminating nanoparticles. Copper-oxide nanoparticles (nCuO) offer potential benefits, but their presence in the environment poses risks to agricultural and environmental sustainability. This study examined soil microbial transformations and the composition of leachate dissolved organic matter (DOM) of paddy soils irrigated with nCuO-contaminated TWW at different concentrations (T2: 0.02 mgL-1, T3: 0.2 mgL-1, T4: 2.0 mgL-1) and examined the differences in Cu source (T5: 0.2 mgL-1 CuSO4). Results showed negative impacts on the absolute microbial abundance with up to 46 % reduction relative to the control treatment (T1). Changes in relative abundance of specific microbes at the genus level deviated from the corresponding phyla. Acidobacteria, Actinobacteria, Chloroflexi, and Verrucomicrobia phyla increased in the surface (0-3 cm) and subsurface (3-15 cm) layers responding differently to nCuO. In the 0-3 cm layer, Nitrospirae, Euryarchaeota, and Crenarchaeota increased, but only Dechloromonas genus from Proteobacteria increased with increasing nCuO. No significant variations were observed in the DOM composition, except in T4, which had a significantly low content of dissolved organic carbon (DOC), total dissolved nitrogen, and terrestrial humic-like and protein-like components. Ninety-eight distinct genera were identified, of which 44%, including 15 bacteria and two archaea, varied between the surface and subsurface, among treatments, and significantly correlated with more DOM parameters in the subsurface. T4 had the highest microbial diversity in the 0-3 layer, and Cu treatments slightly increased the diversity index in the subsurface. Moreover, the effects differed by Cu source, with T3 showing 10 % more reduction in the subsurface and 17 % less reduction in the surface than T5. The variable microbial responses to nCuO and their strong correlations with DOM highlight the need to consider the potential consequences of low nCuO concentrations on biogeochemical cycles.
Collapse
Affiliation(s)
- Susan Praise
- Faculty of Agriculture, Yamagata University, Yamagata, Wakaba Machi 1-23, Tsuruoka Shi, Yamagata, 997-8555, Japan.
| | - Masaaki Miyazawa
- Faculty of Agriculture, Yamagata University, Yamagata, Wakaba Machi 1-23, Tsuruoka Shi, Yamagata, 997-8555, Japan.
| | - Luc Duc Phung
- Faculty of Agriculture, Yamagata University, Yamagata, Wakaba Machi 1-23, Tsuruoka Shi, Yamagata, 997-8555, Japan.
| | - Masateru Nishiyama
- Faculty of Agriculture, Yamagata University, Yamagata, Wakaba Machi 1-23, Tsuruoka Shi, Yamagata, 997-8555, Japan.
| | - Arun Kumar
- Department of Civil Engineering, Indian Institute of Technology Delhi, New Delhi, 110016, India.
| | - Toru Watanabe
- Faculty of Agriculture, Yamagata University, Yamagata, Wakaba Machi 1-23, Tsuruoka Shi, Yamagata, 997-8555, Japan.
| |
Collapse
|
2
|
Liu CJ, Peng YJ, Hu CY, He SX, Xiao SF, Li W, Deng SG, Dai ZH, Ma LQ. Copper enhanced arsenic-accumulation in As-hyperaccumulator Pteris vittata by upregulating its gene expression for As uptake, translocation, and sequestration. JOURNAL OF HAZARDOUS MATERIALS 2023; 460:132484. [PMID: 37688872 DOI: 10.1016/j.jhazmat.2023.132484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/18/2023] [Accepted: 09/03/2023] [Indexed: 09/11/2023]
Abstract
In contaminated soils, arsenic (As) often co-exists with copper (Cu). However, its effects on As accumulation and the related mechanisms in As-hyperaccumulator Pteris vittata remain unclear. In this study, P. vittata plants were exposed to 50 µM As and/or 50 µM Cu under hydroponics to investigate the effects of Cu on plant growth and As accumulation, as well as gene expression related to arsenic uptake (P transporters), reduction (arsenate reductases), and translocation and sequestration (arsenite antiporters). After 14 d of growth and compared to the As treatment, the As concentration in P. vittata fronds increased by 1.4-times from 793 to 1131 mg·kg-1 and its biomass increased by 1.2-fold from 18.0 to 21.1 g·plant-1 in the As+Cu treatment. Copper-enhanced As accumulation was probably due to upregulated gene expressions related to As-metabolisms including As uptake (1.9-fold in P transporter PvPht1;3), translocation (2.1-2.4 fold in arsenite antiporters PvACR3/3;2) and sequestration (1.5-2.0 fold in arsenite antiporters PvACR3;1/3;3). Our results suggest that moderate amount of Cu can help to increase the As accumulation efficiency in P. vittata, which has implication in its application in phytoremedation in As and Cu co-contaminated soils.
Collapse
Affiliation(s)
- Chen-Jing Liu
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - You-Jing Peng
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Chun-Yan Hu
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Si-Xue He
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Shu-Fen Xiao
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Wei Li
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Song-Ge Deng
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Zhi-Hua Dai
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui, 241000, China
| | - Lena Q Ma
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China.
| |
Collapse
|
3
|
Feil SB, Zuluaga MYA, Cesco S, Pii Y. Copper toxicity compromises root acquisition of nitrate in the high affinity range. FRONTIERS IN PLANT SCIENCE 2023; 13:1034425. [PMID: 36743562 PMCID: PMC9895927 DOI: 10.3389/fpls.2022.1034425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 12/29/2022] [Indexed: 06/18/2023]
Abstract
The application of copper (Cu)-based fungicides for crop protection plans has led to a high accumulation of Cu in soils, especially in vineyards. Copper is indeed an essential micronutrient for plants, but relatively high concentrations in soil or other growth substrates may cause toxicity phenomena, such as alteration of the plant's growth and disturbance in the acquisition of mineral nutrients. This last aspect might be particularly relevant in the case of nitrate ( NO 3 - ) , whose acquisition in plants is finely regulated through the transcriptional regulation of NO 3 - transporters and plasma membrane H+-ATPase in response to the available concentration of the nutrient. In this study, cucumber plants were grown hydroponically and exposed to increasing concentrations of Cu (i.e., 0.2, 5, 20, 30, and 50 µM) to investigate their ability to respond to and acquire NO 3 - . To this end, the kinetics of substrate uptake and the transcriptional modulation of the molecular entities involved in the process have been assessed. Results showed that the inducibility of the high-affinity transport system was significantly affected by increasing Cu concentrations; at Cu levels higher than 20 µM, plants demonstrated either strongly reduced or abolished NO 3 - uptake activity. Nevertheless, the transcriptional modulation of both the nitrate transporter CsNRT2.1 and the accessory protein CsNRT3.1 was not coherent with the hindered NO 3 - uptake activity. On the contrary, CsHA2 was downregulated, thus suggesting that a possible impairment in the generation of the proton gradient across the root PM could be the cause of the abolishment of NO 3 - uptake.
Collapse
|
4
|
Michalak A, Wdowikowska A, Janicka M. Plant Plasma Membrane Proton Pump: One Protein with Multiple Functions. Cells 2022; 11:cells11244052. [PMID: 36552816 PMCID: PMC9777500 DOI: 10.3390/cells11244052] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/13/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
In plants, the plasma membrane proton pump (PM H+-ATPase) regulates numerous transport-dependent processes such as growth, development, basic physiology, and adaptation to environmental conditions. This review explores the multifunctionality of this enzyme in plant cells. The abundance of several PM H+-ATPase isogenes and their pivotal role in energizing transport in plants have been connected to the phenomena of pleiotropy. The multifunctionality of PM H+-ATPase is a focal point of numerous studies unraveling the molecular mechanisms of plant adaptation to adverse environmental conditions. Furthermore, PM H+-ATPase is a key element in plant defense mechanisms against pathogen attack; however, it also functions as a target for pathogens that enable plant tissue invasion. Here, we provide an extensive review of the PM H+-ATPase as a multitasking protein in plants. We focus on the results of recent studies concerning PM H+-ATPase and its role in plant growth, physiology, and pathogenesis.
Collapse
|
5
|
Physiological and Molecular Mechanisms of Plant Responses to Copper Stress. Int J Mol Sci 2022; 23:ijms232112950. [PMID: 36361744 PMCID: PMC9656524 DOI: 10.3390/ijms232112950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 10/22/2022] [Accepted: 10/23/2022] [Indexed: 11/25/2022] Open
Abstract
Copper (Cu) is an essential micronutrient for humans, animals, and plants, and it participates in various morphological, physiological, and biochemical processes. Cu is a cofactor for a variety of enzymes, and it plays an important role in photosynthesis, respiration, the antioxidant system, and signal transduction. Many studies have demonstrated the adverse effects of excess Cu on crop germination, growth, photosynthesis, and antioxidant activity. This review summarizes the biological functions of Cu, the toxicity of excess Cu to plant growth and development, the roles of Cu transport proteins and chaperone proteins, and the transport process of Cu in plants, as well as the mechanisms of detoxification and tolerance of Cu in plants. Future research directions are proposed, which provide guidelines for related research.
Collapse
|
6
|
Mir AR, Alam P, Hayat S. Perspective of Melatonin-Mediated Stress Resilience and Cu Remediation Efficiency of Brassica juncea in Cu-Contaminated Soils. FRONTIERS IN PLANT SCIENCE 2022; 13:910714. [PMID: 35923886 PMCID: PMC9340790 DOI: 10.3389/fpls.2022.910714] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 06/07/2022] [Indexed: 06/15/2023]
Abstract
The present study evaluated the influence of melatonin (MEL) on copper toxicity in terms of morphophysiological, microscopic, histochemical, and stress resilience responses in Brassica juncea. Different levels of Cu (0, 30, and 60 mg kg-1) were given in air-dried soil, and 25 days after sowing (DAS), plants were sprayed with 30, 40, or 50 μM of MEL. The results demonstrated that under Cu stress, a significant amount of Cu accumulated in plant tissues, particularly in roots than in upper ground tissues, thereby suppressing the overall growth as evidenced by decrease in tolerance index and photosynthesis and increase in oxidative stress biomarkers (reactive oxygen species, malondialdehyde, and electrolyte leakage content) and cell death. Interestingly, the follow-up treatment of MEL, mainly 40 μM, efficiently improved the physio-biochemical and growth parameters, sugar accumulation, and metabolism. The potential of MEL in modulating Cu stress is attributed to its involvement in enriching the level of nutrient and improving chloroplast and stomatal organization besides lowering oxidative stress via enhanced levels of antioxidants. MEL improved the Cu reclamation potential in plants by enhancing Cu uptake and its translocation to aerial tissues. Principal component analysis showed that most of the morphophysiological and growth attributes were positively linked with MEL and negatively related to Cu levels, whereas all the stress-enhancing attributes showed a strong relationship with excessive Cu levels in soils. The present study suggested that MEL has the potential to improve growth and photosynthesis resulting in improved stress resilience under Cu stress along with increased remediation capability of mustard for remediation of Cu-contaminated soils.
Collapse
Affiliation(s)
- Anayat Rasool Mir
- Plant Physiology Section, Department of Botany, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
| | - Pravej Alam
- Department of Biology, College of Science and Humanities in Al-Kharj, Prince Sattam Bin Abdulaziz University, Al-Kharj, Saudi Arabia
| | - Shamsul Hayat
- Plant Physiology Section, Department of Botany, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India
| |
Collapse
|
7
|
Differed Adaptive Strategies to Nutrient Status between Native and Exotic Mangrove Species. FORESTS 2022. [DOI: 10.3390/f13050804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
To rapidly rehabilitate mangrove forests, exotic mangrove species characterized by high growth rates have been introduced in China, which would undoubtedly affect the nutrient status, nutrient acquisition and utilization strategies of mangrove plants, but the mechanism remains unclear. Qi’ao Island (a suburb of Zhuhai City) has the largest continuous exotic mangrove forests in China, where a mass collection of mangrove soils, plant tissues and tidewater was conducted. Ecological stoichiometric ratios and isotopic compositions were then analyzed to evaluate the ecosystem-scale nutrient status and compare the nutrient acquisition and utilization strategies of native Kandelia obovata (KO) and exotic Sonneratia apetala (SA) species. Soil and foliar C:N:P stoichiometries indicated that there is high P availability but N limitations, while further isotopic evidence indicated that native KO and exotic SA responded differently to the N limitation status. First, native KO seemed to prefer NO3−, while exotic SA preferred NH4+, according to the Δ15Nleaf–root (leaf–root δ15N difference) as well as the relationships between foliar δ15N and soil-extracted NH4+ δ15N, and between N and heavy metal contents. This suggested possible inter-specific competition between native KO and exotic SA, leading to different N species’ preferences to maximize resource utilization. Next, native KO likely adopted the “conservative” strategy to ensure survival with reduced investment in N-rich growth components but root systems leading to lower growth rates and higher N use efficiency (NUE) and intrinsic water use efficiency (iWUE), while exotic SA adopted the “aggressive” strategy to ensure fast growth with heavy investment in N-rich growth components, leading to rapid growth and lower NUE and iWUE, and showing signs of invasiveness. Further, native KO is more responsive to aggravated N limitation by enhancing NUE. This study will provide insights into the adaptation of different mangrove species to nutrient limitations and the risks associated with large-scale plantations of exotic mangrove species.
Collapse
|
8
|
Xu M, Lin Y, da Silva EB, Cui Q, Gao P, Wu J, Ma LQ. Effects of copper and arsenic on their uptake and distribution in As-hyperaccumulator Pteris vittata. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 300:118982. [PMID: 35150802 DOI: 10.1016/j.envpol.2022.118982] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 02/05/2022] [Accepted: 02/08/2022] [Indexed: 06/14/2023]
Abstract
Arsenic (As) and copper (Cu) are common co-contaminates in soils. However, their interactive effects on their accumulation and distribution in As-hyperaccumulator Pteris vittata are poorly understood. A hydroponic experiment was conducted with As being 0, 5, or 50 μM and Cu being 0.32, 3.2, or 32 μM to evaluate their phytotoxicity, accumulation, and distribution in P. vittata. In addition, As and Cu uptake kinetics were examined using the Michaelis-Menten kinetics model. Total As and Cu concentrations in P. vittata were up to 487 and 1355 mg kg-1. About 39-81% of the As was in the fronds compared to 0.6-18% for Cu. At 50 μM As, increasing Cu concentration from 0.32 to 32 μM increased root As while decreasing frond As concentrations, with the translocation factor (ratio of As in fronds to roots) being reduced from 4.0 to 0.31. In contrast, As did not affect Cu accumulation in P. vittata. Michaelis constant Km value for As was higher than that of Cu (6.49-24.9 vs. 0.43-3.36), consistent with higher Cu uptake than As. Besides, Cu reduced root K but increased P levels in the roots, whereas As increased the K and P concentrations in the fronds. Our results suggest that P. vittata accumulated more Cu than As in the roots, contributing to its low As translocation. As such, high levels of Cu are likely to reduce As uptake by P. vittata during phytoremediation of As-contaminated sites.
Collapse
Affiliation(s)
- Min Xu
- College of Environmental Science, Sichuan Agricultural University, Chengdu, 611130, China; Soil and Water Sciences Department, University of Florida, Gainesville, FL, 32611, USA.
| | - Yang Lin
- Soil and Water Sciences Department, University of Florida, Gainesville, FL, 32611, USA.
| | | | - Qinghong Cui
- College of Future Technology, Peking University, Beijing, 100871, China.
| | - Peng Gao
- Department of Genetics, Stanford University School of Medicine, Stanford, 94304, USA.
| | - Jun Wu
- College of Environmental Science, Sichuan Agricultural University, Chengdu, 611130, China.
| | - Lena Q Ma
- Institute of Soil and Water Resources and Environmental Science, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China.
| |
Collapse
|
9
|
Ju W, Duan C, Liu L, Jin X, Bravo-Ruiseco G, Mei Y, Fang L. Reduction of Cu and nitrate leaching risk associated with EDDS-enhanced phytoextraction process by exogenous inoculation of plant growth promoting rhizobacteria. CHEMOSPHERE 2022; 287:132288. [PMID: 34555581 DOI: 10.1016/j.chemosphere.2021.132288] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 09/13/2021] [Accepted: 09/17/2021] [Indexed: 05/09/2023]
Abstract
Biodegradable chelant (S,S)-N,N'-ethylenediaminedisuccinic acid (EDDS) has the more advantages of enhanced metal mobility, rapid degradation, environmental friendliness, and ammonium release. However, the risk of metal and/or nitrate residues and leaching within EDDS biodegradation remains as the bottleneck for the widespread application of EDDS-induced phytoremediation. This study aims to explore if the inoculation of plant growth-promoting rhizobacteria (PGPRs) can eliminate the risk associated with the short-term application of EDDS by investigating Cu phytoextraction and soil nitrate content. Results showed that EDDS application significantly increased the copper (Cu) concentration in shoots, soil total Cu, NH4+-N and NO3--N content, but decreased plant biomass. The inoculation of PGPRs in the soil showed a strong ability to increase plant biomass, Cu phytoextraction and soil NH4+-N content, and decrease soil Cu and NO3--N content. Moreover, bacterial dominant taxa were found to be the largest contributors to soil NH4+-N and NO3--N variation, and the abundance of denitrifying bacteria (Bacteroidetes and Stenotrophomonas) decreased in the treatment with PGPRs. The risk of residual Cu and nitrate leaching was reduced by the inoculation of PGPRs without significantly changing the stability of the bacterial community. These new findings indicate that the exogenous application of beneficial rhizobacteria can provide an effective strategy to reduce the risk in metal-contaminated soils of chelant-assisted phytoextraction.
Collapse
Affiliation(s)
- Wenliang Ju
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, 712100, China; School of Environment, Tsinghua University, Beijing, 100084, China
| | - Chengjiao Duan
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, 712100, China
| | - Lei Liu
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713, GZ, Groningen, the Netherlands
| | - Xiaolian Jin
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, 712100, China
| | - Gabriela Bravo-Ruiseco
- Department of Medical Microbiology and Infection Prevention, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713, GZ, Groningen, the Netherlands
| | - Yuxia Mei
- College of Life Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Linchuan Fang
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, 712100, China; CAS Center for Excellence in Quaternary Science and Global Change, Chinese Academy of Sciences, Xi'an, 710061, China.
| |
Collapse
|
10
|
Braglia R, Rugnini L, Malizia S, Scuderi F, Redi EL, Canini A, Bruno L. Exploiting the Potential in Water Cleanup from Metals and Nutrients of Desmodesmus sp. and Ampelodesmos mauritanicus. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10071461. [PMID: 34371664 PMCID: PMC8309229 DOI: 10.3390/plants10071461] [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: 05/20/2021] [Revised: 07/09/2021] [Accepted: 07/13/2021] [Indexed: 06/13/2023]
Abstract
Increasing levels of freshwater contaminants, mainly due to anthropogenic activities, have resulted in a great deal of interest in finding new eco-friendly, cost-effective and efficient methods for remediating polluted waters. The aim of this work was to assess the feasibility of using a green microalga Desmodesmus sp., a cyanobacterium Nostoc sp. and a hemicryptophyte Ampelodesmos mauritanicus to bioremediate a water polluted with an excess of nutrients (nitrogen and phosphorus) and heavy metals (copper and nickel). We immediately determined that Nostoc sp. was sensitive to metal toxicity, and thus Desmodesmus sp. was chosen for sequential tests with A. mauritanicus. First, A. mauritanicus plants were grown in the 'polluted' culture medium for seven days and were, then, substituted by Desmodesmus sp. for a further seven days (14 days in total). Heavy metals were shown to negatively affect both the growth rates and nutrient removal capacity. The sequential approach resulted in high metal removal rates in the single metal solutions up to 74% for Cu and 85% for Ni, while, in the bi-metal solutions, the removal rates were lower and showed a bias for Cu uptake. Single species controls showed better outcomes; however, further studies are necessary to investigate the behavior of new species.
Collapse
Affiliation(s)
- Roberto Braglia
- Botanic Gardens, Department Biology, University of Rome Tor Vergata, 00133 Rome, Italy; (R.B.); (F.S.); (E.L.R.); (A.C.)
| | - Lorenza Rugnini
- Laboratory of Biology of Algae, Department Biology, University of Rome Tor Vergata, 00133 Rome, Italy; (L.R.); (S.M.)
| | - Sara Malizia
- Laboratory of Biology of Algae, Department Biology, University of Rome Tor Vergata, 00133 Rome, Italy; (L.R.); (S.M.)
| | - Francesco Scuderi
- Botanic Gardens, Department Biology, University of Rome Tor Vergata, 00133 Rome, Italy; (R.B.); (F.S.); (E.L.R.); (A.C.)
| | - Enrico Luigi Redi
- Botanic Gardens, Department Biology, University of Rome Tor Vergata, 00133 Rome, Italy; (R.B.); (F.S.); (E.L.R.); (A.C.)
| | - Antonella Canini
- Botanic Gardens, Department Biology, University of Rome Tor Vergata, 00133 Rome, Italy; (R.B.); (F.S.); (E.L.R.); (A.C.)
| | - Laura Bruno
- Laboratory of Biology of Algae, Department Biology, University of Rome Tor Vergata, 00133 Rome, Italy; (L.R.); (S.M.)
| |
Collapse
|
11
|
Behlau F, Lanza FE, da Silva Scapin M, Scandelai LHM, Silva Junior GJ. Spray Volume and Rate Based on the Tree Row Volume for a Sustainable Use of Copper in the Control of Citrus Canker. PLANT DISEASE 2021; 105:183-192. [PMID: 33170770 DOI: 10.1094/pdis-12-19-2673-re] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Copper is the most efficient pesticide for the control of citrus canker (Xanthomonas citri subsp. citri). To mitigate the environmental impacts and costs, the copper sprays in citrus orchards are being optimized based on the tree row volume (TRV). A previous investigation allowed for significant reductions of the spray volume and copper rates. Nevertheless, the results also indicated the need for additional studies. The aim of this work was to assess whether both the spray volume and the metallic copper rate based on the TRV may be further reduced. A field trial was carried out during two seasons in a 3-year-old commercial orchard of Pera sweet orange located in the municipality of Paranavaí, Paraná, Brazil. The volumes of 20 and 40 ml of spray mixture per m3 of the tree canopy were assessed in combination with the metallic copper rates of 10.5, 21.0, 36.8, or 52.5 mg/m3. Disease was measured as the temporal progress of canker incidence on leaves, cumulative dropped fruit with canker, and incidence of diseased fruit at harvest. The quality of sprays was assessed by measuring the copper deposition and leaf coverage. The treatment with the highest citrus canker control for the lowest use of water and copper was the combination of 40 ml and 36.8 mg/m3. Regression analyses indicated that the minimum threshold deposition of copper was ∼1.5 µg Cu2+/cm2 leaf area. In addition, the lowest spray volume and copper rate necessary to achieve this deposition are 35 ml/m3 and 30 mg/m3. The use of 20 ml/m3 did not efficiently control the disease due to the deficient coverage of treated surfaces. This study demonstrated that it is possible to use even lower amounts of copper and water without interfering with the efficiency of control of citrus canker.
Collapse
Affiliation(s)
- Franklin Behlau
- Fundo de Defesa da Citricultura, 14807-040, Araraquara, SP, Brazil
| | - Fabrício E Lanza
- Fundo de Defesa da Citricultura, 14807-040, Araraquara, SP, Brazil
| | | | | | | |
Collapse
|
12
|
Feil SB, Pii Y, Valentinuzzi F, Tiziani R, Mimmo T, Cesco S. Copper toxicity affects phosphorus uptake mechanisms at molecular and physiological levels in Cucumis sativus plants. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 157:138-147. [PMID: 33113485 DOI: 10.1016/j.plaphy.2020.10.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 10/16/2020] [Indexed: 05/28/2023]
Abstract
Due to the deliberate use of cupric fungicides in the last century for crop-defence programs, copper (Cu) has considerably accumulated in the soil. The concentrations of Cu often exceed the safety limits of risk assessment for Cu in soil and this may cause toxicity in plants. Copper toxicity induces nutritional imbalances in plants and constraints to plants growth. These aspects might be of paramount importance in the case of phosphorus (P), which is an essential plant macronutrient. In this work, hydroponically grown cucumber plants were used to investigate the influence of the exposure to different Cu concentrations (0.2, 5, 25 and 50 μM) on i) the phenotypic traits of plants, particularly at root level, ii) the nutrient content in both roots and shoots, and iii) the P uptake mechanisms, considering both the biochemical and molecular aspects. At high Cu concentrations (i.e. above 25 μM), the shoot and root growth resulted stunted and the P influx rate diminished. Furthermore, two P transporter genes (i.e. CsPT1.4 and CsPT1.9) were upregulated at the highest Cu concentration, albeit with different induction kinetics. Overall, these results confirm that high Cu concentrations can limit the root acquisition of P, most likely via a direct action on the uptake mechanisms (e.g. transporters). However, the alteration of root plasma membrane permeability induced by Cu toxicity might also play a pivotal role in the observed phenomenon.
Collapse
Affiliation(s)
- Sebastian B Feil
- Faculty of Science and Technology, Free University of Bozen-Bolzano, I-39100, Bolzano, Italy
| | - Youry Pii
- Faculty of Science and Technology, Free University of Bozen-Bolzano, I-39100, Bolzano, Italy.
| | - Fabio Valentinuzzi
- Faculty of Science and Technology, Free University of Bozen-Bolzano, I-39100, Bolzano, Italy
| | - Raphael Tiziani
- Faculty of Science and Technology, Free University of Bozen-Bolzano, I-39100, Bolzano, Italy
| | - Tanja Mimmo
- Faculty of Science and Technology, Free University of Bozen-Bolzano, I-39100, Bolzano, Italy; Competence Centre of Plant Health, Free University of Bozen/Bolzano, I-39100, Bolzano, Italy
| | - Stefano Cesco
- Faculty of Science and Technology, Free University of Bozen-Bolzano, I-39100, Bolzano, Italy
| |
Collapse
|
13
|
Shabbir Z, Sardar A, Shabbir A, Abbas G, Shamshad S, Khalid S, Murtaza G, Dumat C, Shahid M. Copper uptake, essentiality, toxicity, detoxification and risk assessment in soil-plant environment. CHEMOSPHERE 2020; 259:127436. [PMID: 32599387 DOI: 10.1016/j.chemosphere.2020.127436] [Citation(s) in RCA: 136] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 06/08/2020] [Accepted: 06/14/2020] [Indexed: 05/27/2023]
Abstract
Copper (Cu) is an essential metal for human, animals and plants, although it is also potentially toxic above supra-optimal levels. In plants, Cu is an essential cofactor of numerous metalloproteins and is involved in several biochemical and physiological processes. However, excess of Cu induces oxidative stress inside plants via enhanced production of reactive oxygen species (ROS). Owing to its dual nature (essential and a potential toxicity), this metal involves a complex network of uptake, sequestration and transport, essentiality, toxicity and detoxification inside the plants. Therefore, it is vital to monitor the biogeo-physiochemical behavior of Cu in soil-plant-human systems keeping in view its possible essential and toxic roles. This review critically highlights the latest understanding of (i) Cu adsorption/desorption in soil (ii) accumulation in plants, (iii) phytotoxicity, (iv) tolerance mechanisms inside plants and (v) health risk assessment. The Cu-mediated oxidative stress and resulting up-regulation of several enzymatic and non-enzymatic antioxidants have been deliberated at molecular and cellular levels. Moreover, the role of various transporter proteins in Cu uptake and its proper transportation to target metalloproteins is critically discussed. The review also delineates Cu build-up in plant food and accompanying health disorders. Finally, this review proposes some future perspectives regarding Cu biochemistry inside plants. The review, to a large extent, presents a complete picture of the biogeo-physiochemical behavior of Cu in soil-plant-human systems supported with up-to-date 10 tables and 5 figures. It can be of great interest for post-graduate level students, scientists, industrialists, policymakers and regulatory authorities.
Collapse
Affiliation(s)
- Zunaira Shabbir
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari, Pakistan
| | - Aneeza Sardar
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari, Pakistan
| | - Abrar Shabbir
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari, Pakistan
| | - Ghulam Abbas
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari, Pakistan
| | - Saliha Shamshad
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari, Pakistan
| | - Sana Khalid
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari, Pakistan
| | - Ghulam Murtaza
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad, 38040, Pakistan
| | - Camille Dumat
- Centre d'Etude et de Recherche Travail Organisation Pouvoir (CERTOP), UMR5044, Université J. Jaurès - Toulouse II, 5 allée Machado A., 31058, Toulouse, Cedex 9, France; Université de Toulouse, INP-ENSAT, Avenue de l'Agrobiopole, 31326, Auzeville-Tolosane, France; Association Réseau-Agriville, France
| | - Muhammad Shahid
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari, Pakistan. http://reseau-agriville.com/
| |
Collapse
|
14
|
Loss Sperandio MV, Santos LA, Huertas Tavares OC, Fernandes MS, de Freitas Lima M, de Souza SR. Silencing the Oryza sativa plasma membrane H +-ATPase isoform OsA2 affects grain yield and shoot growth and decreases nitrogen concentration. JOURNAL OF PLANT PHYSIOLOGY 2020; 251:153220. [PMID: 32622271 DOI: 10.1016/j.jplph.2020.153220] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 06/09/2020] [Accepted: 06/09/2020] [Indexed: 06/11/2023]
Abstract
The plasma membrane (PM) H+-ATPase (EC 3.6.1.3.) is a key component involved in nutrient uptake. There are 10 PM H+-ATPase isoforms in the rice genome (OsA1-OsA10), and OsA2 is highly responsive to nitrate (NO3-). We investigated the role that the OsA2 isoform plays in the total N and growth of rice (Oryza sativa). By the use of artificial microRNA, mutant osa2 rice lines presented ∼70 % downregulated levels of OsA2. Three osa2 lines and control plants (transformed with an empty IRS154 vector and named IRS) were cultivated in the greenhouse to evaluate grain and shoot production. For hydroponic experiments, the same lines were grown in Hoagland solution under two different NO3- levels for 30 days - 0.2 mM NO3--N (low N) or 2.0 mM NO3--N (sufficient N) - or were grown for three days without NO3- (starvation) after 27 days under 2.0 mM NO3--N. In the greenhouse experiments, compared with the IRS plants, the osa2 lines had lower shoot fresh weights, grain yields and SPAD values. Moreover, compared with the IRS plants, the three osa2 lines grown hydroponically under low NO3- levels had lower N concentration and net flux of NO3-. PM H+-ATPase activity was lower in the osa2 mutants than in the IRS plants. The relatively low N concentration in the osa2 lines was not due to lower expression of OsNRT2.1, OsNRT2.2, or OsNAR2.1. These results indicate that the specific PM H+-ATPase isoform OsA2 affects the net flux of NO3-, N concentration, and grain yield.
Collapse
Affiliation(s)
- Marcus Vinícius Loss Sperandio
- Federal Rural University of Pernambuco, Department of Biology, R. Dom Manuel de Medeiros, Dois Irmãos, CEP 52171-900, Recife, Pernambuco, Brazil.
| | - Leandro Azevedo Santos
- Federal Rural University of Rio de Janeiro, BR 465, Km 7.0, Seropédica, Rio de Janeiro, Brazil
| | | | | | - Marcelo de Freitas Lima
- Federal Rural University of Rio de Janeiro, BR 465, Km 7.0, Seropédica, Rio de Janeiro, Brazil
| | - Sonia Regina de Souza
- Federal Rural University of Rio de Janeiro, BR 465, Km 7.0, Seropédica, Rio de Janeiro, Brazil
| |
Collapse
|
15
|
Pelegrino MT, Kohatsu MY, Seabra AB, Monteiro LR, Gomes DG, Oliveira HC, Rolim WR, de Jesus TA, Batista BL, Lange CN. Effects of copper oxide nanoparticles on growth of lettuce (Lactuca sativa L.) seedlings and possible implications of nitric oxide in their antioxidative defense. ENVIRONMENTAL MONITORING AND ASSESSMENT 2020; 192:232. [PMID: 32166379 DOI: 10.1007/s10661-020-8188-3] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 02/24/2020] [Indexed: 05/04/2023]
Abstract
Copper oxide nanoparticles (CuO NPs) have been extensively explored for use in agriculture. Previous studies have indicated that application of CuO NPs might be promising for development and conservation of plants, pest control, and for the recovery of degraded soils. However, depending on the applied concentration copper can cause phytotoxic effects. In this work, biosynthesized CuO NPs (using green tea extract) were evaluated on their effects on lettuce (Lactuca sativa L.) seedling growth, which were exposed at concentrations ranged between 0.2 and 300 μg mL-1. From the biosynthesized were obtained ultra-small CuO NPs (~ 6.6 nm), with high stability in aqueous suspension. Toxicity bioassays have shown that at low concentrations (up to 40 μg mL-1), CuO NPs did not affect or even enhanced the seed germination. At higher concentrations (higher than 40 μg mL-1), inhibition of seed germination and radicle growth ranging from 35 to 75% was observed. With the increase of CuO NPs concentrations, nitrite and S-nitrosothiols levels in radicles increased, whereas superoxide dismutase and total antioxidant activities decreased. The nitrite and S-nitrosothiols levels in lettuce radicles showed a direct dose response to CuO NP application, which may indicate nitric oxide-dependent signaling pathways in the plant responses. Therefore, the results demonstrated that at low concentrations (≤ 20 μg mL-1) of CuO NPs, beneficial effects are obtained from seedlings, enhancing plant growth, and the involvement of nitric oxide signaling in the phytotoxic effects induced by high concentration of this formulation. Graphical abstract.
Collapse
Affiliation(s)
| | - Marcio Yukihiro Kohatsu
- Centro de Engenharia, Modelagem e Ciências Sociais Aplicadas, Universidade Federal do ABC (UFABC), Santo Andre, SP, Brazil
| | - Amedea Barozzi Seabra
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC (UFABC), Santo Andre, SP, Brazil
| | - Lucilena Rebelo Monteiro
- Centro de Química e Meio Ambiente, Ipen/CNEN-SP - Instituto de Pesquisas Energeticas e Nucleares/Comissão Nacional de Energia Nuclear, Sao Paulo, SP, Brazil
| | - Diego Genuário Gomes
- Department of Animal and Plant Biology, Universidade Estadual de Londrina (UEL), Londrina, PR, Brazil
| | - Halley Caixeta Oliveira
- Department of Animal and Plant Biology, Universidade Estadual de Londrina (UEL), Londrina, PR, Brazil
| | - Wallace Rosado Rolim
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC (UFABC), Santo Andre, SP, Brazil
| | - Tatiane Araújo de Jesus
- Centro de Engenharia, Modelagem e Ciências Sociais Aplicadas, Universidade Federal do ABC (UFABC), Santo Andre, SP, Brazil
| | - Bruno Lemos Batista
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC (UFABC), Santo Andre, SP, Brazil
| | - Camila Neves Lange
- Centro de Ciências Naturais e Humanas, Universidade Federal do ABC (UFABC), Santo Andre, SP, Brazil.
| |
Collapse
|
16
|
Lin YJ, Yu XZ, Li YH, Yang L. Inhibition of the mitochondrial respiratory components (Complex I and Complex III) as stimuli to induce oxidative damage in Oryza sativa L. under thiocyanate exposure. CHEMOSPHERE 2020; 243:125472. [PMID: 31995896 DOI: 10.1016/j.chemosphere.2019.125472] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 11/22/2019] [Accepted: 11/24/2019] [Indexed: 05/24/2023]
Abstract
Repression of the electron transport in mitochondria can result in an increase of reactive oxygen species (ROS) in plant cells. This study was to clarify inhibition of the mitochondrial respiratory components (Complex I and Complex III) as stimuli to induce oxidative damage in Oryza sativa L. under exogenous SCN- exposure with special emphasis on lipid peroxidation, protein modification, and DNA damage at the biochemical and molecular levels. Our results showed that enzymatic activity and gene expression of cytochrome c reductase (Complex III) in roots and shoots of rice seedlings were significantly repressed by SCN- exposure, where significant inhibition of NADH dehydrogenase (Complex I) was only detected in shoots, suggesting that Complex III was the main target attacked by SCN- ligand in rice roots, and both components were arrested in shoots. ROS analysis in tissues indicated that SCN- exposure caused significant accumulation of H2O2 and O2-•, increased malondialdehyde (MDA) and carbonyl content in rice materials in a dose-dependent manner. Similarly, a remarkable elevation of electrolyte leakage was observed in rice tissue samples. The comet assay indicated a positive correlation between DNA damage and external SCN- exposure. In conclusion, oxidative burst generated from the inhibitions of the electron transport in mitochondria in rice seedlings under SCN- exposure can cause lipid peroxidation, protein modification and DNA damage, eventually decreasing fresh weight of rice seedlings.
Collapse
Affiliation(s)
- Yu-Juan Lin
- College of Environmental Science & Engineering, Guilin University of Technology, Guilin, 541004, People's Republic of China
| | - Xiao-Zhang Yu
- College of Environmental Science & Engineering, Guilin University of Technology, Guilin, 541004, People's Republic of China; Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area, Guilin University of Technology, Guilin, 541004, People's Republic of China.
| | - Yan-Hong Li
- College of Environmental Science & Engineering, Guilin University of Technology, Guilin, 541004, People's Republic of China
| | - Li Yang
- College of Environmental Science & Engineering, Guilin University of Technology, Guilin, 541004, People's Republic of China
| |
Collapse
|
17
|
Huo K, Shangguan X, Xia Y, Shen Z, Chen C. Excess copper inhibits the growth of rice seedlings by decreasing uptake of nitrate. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 190:110105. [PMID: 31884325 DOI: 10.1016/j.ecoenv.2019.110105] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 12/13/2019] [Accepted: 12/18/2019] [Indexed: 06/10/2023]
Abstract
Copper (Cu) toxicity has a deleterious effect on plant growth, and different nitrogen (N) forms have significantly different impacts on the uptake and accumulation of heavy metals by plants. However, it remains unclear how excess Cu inhibits the growth of rice seedlings under different N forms. Here, we examined the mechanism of Cu toxicity inhibiting the growth of rice supplied with different N forms. Rice seedlings were grown in a nutrient solution with 0.81 mmol L-1 N, as ammonium (NH4+), nitrate (NO3-) and NH4+ + NO3-, or without N (0 N) in the presence of 0.2 μmol L-1 CuSO4 or 10 μmol L-1 CuSO4. The inhibition of shoot growth under excess Cu was more pronounced in plants that were supplied with NO3- than NH4+; such inhibition was not induced by higher Cu concentration in shoots. Applied with NO3- alone increased solution pH value up to 6.2, but supplied with NH4+ alone and NH4+ + NO3- decreased solution pH value to 4.0 and 4.2, respectively. The increment of solution pH reduced Cu concentration in shoots of rice supplied with NO3- alone. Copper toxicity decreased NO3- concentrations in rice seedlings that were supplied with NO3- alone but increased the NH4+ concentrations in plants that were supplied with NH4+ or NH4+ + NO3-. High Cu levels reduced the uptake of NO3- in roots by the analysis of net NO3- flux and NO3- assimilation enzymes activity. Under excess Cu, the transcript levels of OsNPF6.5, OsNPF2.2 and OsNPF2.4 genes were suppressed, while OsNRT2.1, OsNRT2.2 and OsNAR2.1 were raised in roots. In conclusion, Cu toxicity inhibits NO3- uptake and upward translocation by modulating the expression level of NO3- transporter genes. The reduction in the concentrations of NO3- and total N decreased shoot growth of rice seedlings when N was supplied as NO3-. Hence, rice seedlings supplied with NO3- had lower shoot biomass than those with NH4+ under Cu stress.
Collapse
Affiliation(s)
- Kai Huo
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xiangchao Shangguan
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yan Xia
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zhenguo Shen
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China
| | - Chen Chen
- College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, China.
| |
Collapse
|
18
|
Pan W, You Y, Weng YN, Shentu JL, Lu Q, Xu QR, Liu HJ, Du ST. Zn stress facilitates nitrate transporter 1.1-mediated nitrate uptake aggravating Zn accumulation in Arabidopsis plants. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 190:110104. [PMID: 31884326 DOI: 10.1016/j.ecoenv.2019.110104] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 12/15/2019] [Accepted: 12/18/2019] [Indexed: 05/21/2023]
Abstract
Describing the mechanisms of zinc (Zn) accumulation in plants is essential to counteract the effects of excessive Zn uptake in crops grown in contaminated soils. Increasing evidence suggests that there is a positive correlation between nitrate supply and Zn accumulation in plants. However, the role of the primary nitrate transporter NRT1.1 in Zn accumulation in plants remains unknown. In this study, a Zn stress-induced increase in nitrate uptake and an increase in NRT1.1 protein levels in wild-type (Col-0) Arabidopsis plants were measured using microelectrode ion flux and green fluorescent protein (GFP)/β-glucuronidase (GUS) staining, respectively. Both agar and hydroponic cultures showed that mutants lacking the NRT1.1 function in nrt1.1 and chl1-5 (chlorate resistant 1) exhibited lower Zn levels in the roots and shoots of Zn-stressed plants than the wild-type. A lack of NRT1.1 activity also alleviated Zn-induced photosynthetic damage and growth inhibition in plants. Further, we used a rotation system with synchronous or asynchronous uptakes of nitrate and Zn to demonstrate differences in Zn levels between the Col-0 and nrt1.1/chl1-5 mutants. Significantly lower difference in Zn levels were noted in the nitrate/Zn asynchronous treatment than in the nitrate/Zn synchronous treatment. From these results, it can be concluded that NRT1.1 modulates Zn accumulation in plants via a nitrate-dependent pathway.
Collapse
Affiliation(s)
- Wei Pan
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Yue You
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Yi-Neng Weng
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Jia-Li Shentu
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China; Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou, 310018, China; Instrumental Analysis Center of Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Qi Lu
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Qian-Ru Xu
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Hui-Jun Liu
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China; Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou, 310018, China; Instrumental Analysis Center of Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Shao-Ting Du
- College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China; Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou, 310018, China; Instrumental Analysis Center of Zhejiang Gongshang University, Hangzhou, 310018, China.
| |
Collapse
|
19
|
Gong Q, Li Z, Wang L, Dai T, Kang Q, Niu D. Exogenous of Indole-3-Acetic Acid Application Alleviates Copper Toxicity in Spinach Seedlings by Enhancing Antioxidant Systems and Nitrogen Metabolism. TOXICS 2019; 8:E1. [PMID: 31878158 PMCID: PMC7151742 DOI: 10.3390/toxics8010001] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/11/2019] [Accepted: 12/13/2019] [Indexed: 01/31/2023]
Abstract
Indole-3-acetic acid (IAA) is a potential mediator in the protection of plants from copper (Cu) toxicity and the enhancement of Cu tolerance. In this paper, spinach (Spinacia oleracea L.) seedlings were cultivated in soil containing 700 mg kg-1 Cu and the leaves of seedlings were sprayed with different concentrations of IAA. Exogenous IAA treatment reduced the malondialdehyde (MDA) concentrations in Cu-stressed seedlings and increased biomass, proline content, and the activities of antioxidant enzymes. Exogenous IAA treatment also increased the levels of nitrogen (N) assimilation compounds and the activities of N-metabolizing enzymes, but reduced NH4+ content. Notably, lower concentrations of IAA (10-40 mg L-1) increased the Cu concentrations in roots and reduced the Cu concentrations in leaves, while higher concentrations of IAA (50 mg L-1) reduced the Cu concentrations in both roots and leaves to the lowest levels. The findings indicated that the application of IAA reduced Cu accumulation, alleviated Cu toxicity, and enhanced Cu tolerance in spinach seedlings. IAA application could be used as an alternative strategy for reducing Cu accumulation in vegetable crops and for remediating Cu-contaminated soil, in turn reducing the hazardous effects of heavy metal contamination on human health and the environment.
Collapse
Affiliation(s)
- Qin Gong
- Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China; (Q.G.); (L.W.); (T.D.); (Q.K.); (D.N.)
- Further Education Colleges, Xinjiang Vocation College of Agriculture, Changji 831100, China
| | - Zhaohua Li
- Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China; (Q.G.); (L.W.); (T.D.); (Q.K.); (D.N.)
- Hubei Rural Safe Drinking Water Engineering Technology Research Center, Wuhan 430062, China
| | - Ling Wang
- Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China; (Q.G.); (L.W.); (T.D.); (Q.K.); (D.N.)
| | - Tongwei Dai
- Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China; (Q.G.); (L.W.); (T.D.); (Q.K.); (D.N.)
| | - Qun Kang
- Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China; (Q.G.); (L.W.); (T.D.); (Q.K.); (D.N.)
| | - Duandan Niu
- Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China; (Q.G.); (L.W.); (T.D.); (Q.K.); (D.N.)
| |
Collapse
|
20
|
Xu ZM, Wang Z, Gao Q, Wang LL, Chen LL, Li QG, Jiang JJ, Ye HJ, Wang DS, Yang P. Influence of irrigation with microalgae-treated biogas slurry on agronomic trait, nutritional quality, oxidation resistance, and nitrate and heavy metal residues in Chinese cabbage. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 244:453-461. [PMID: 31154108 DOI: 10.1016/j.jenvman.2019.04.058] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 02/25/2019] [Accepted: 04/16/2019] [Indexed: 06/09/2023]
Abstract
Biogas slurry (BS) is a main byproduct of biogas production that is commonly used for agricultural irrigation because of its abundant nutrients and microelements. However, direct application of BS may cause quality decline and nitrate and heavy metal accumulation in crops. To address this issue, a microalgae culture experiment and an irrigation experiment were performed to evaluate the removal efficiencies of nutrients and heavy metals from diluted BS by microalgae Scenedesmus sp. and to investigate the effects of irrigation with microalgae-treated BS (MBS-25, MBS-50, MBS-75, and MBS-100) on nutritional quality, oxidation resistance, and nitrate and heavy metal residues in Chinese cabbage. After 8 days of continuous culture, a ratio of 1/1 for BS/tap water mixture (BS-50) was the optimal proportion for microalgal growth (3.73 g dry cell L-1) and efficient removal of total nitrogen (86.1%), total phosphorus (94.3%), COD (87.5%), Cr (50%), Pb (60.7%), and Cd (59.7%). The pH in MBS-50 medium recovered to the highest level in a shorter period of time and accelerated the gas stripping of ammonia nitrogen and the formation of insoluble phosphate and metals, which partly contributed to the high removal efficiencies. MBS irrigation significantly promoted crop growth; improved nutritional quality, edible taste, and oxidation resistance; and reduced nitrate and heavy metal residues in Chinese cabbage at a large scale. Therefore, microalgae culture was beneficial to reduce negative impacts of BS irrigation in crop growth and agricultural product safety. This study may provide a theoretical basis for the safe utilization of BS waste in agricultural irrigation.
Collapse
Affiliation(s)
- Zhi-Min Xu
- School of Environment, Key Laboratory of Environmental Pollution and Health of Guangdong Province, Jinan University, Guangzhou, 510632, China; Department of Ecology, Jinan University, Guangzhou, 510632, China.
| | - Zhen Wang
- School of Environment, Key Laboratory of Environmental Pollution and Health of Guangdong Province, Jinan University, Guangzhou, 510632, China
| | - Qiong Gao
- School of Environment, Key Laboratory of Environmental Pollution and Health of Guangdong Province, Jinan University, Guangzhou, 510632, China
| | - Li-Li Wang
- School of Environment, Key Laboratory of Environmental Pollution and Health of Guangdong Province, Jinan University, Guangzhou, 510632, China
| | - Li-Li Chen
- School of Architecture and Urban Planning, Hunan City University, Yiyang, 413000, China
| | - Qiao-Guang Li
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou, 510550, China
| | - Jian-Jun Jiang
- School of Environment, Key Laboratory of Environmental Pollution and Health of Guangdong Province, Jinan University, Guangzhou, 510632, China
| | - Han-Jie Ye
- School of Environment, Key Laboratory of Environmental Pollution and Health of Guangdong Province, Jinan University, Guangzhou, 510632, China
| | - Dong-Sheng Wang
- School of Environment, Key Laboratory of Environmental Pollution and Health of Guangdong Province, Jinan University, Guangzhou, 510632, China
| | - Ping Yang
- Guangdong Institute of Microbiology, Guangzhou, 510632, China.
| |
Collapse
|
21
|
Mermod M, Takusagawa M, Kurata T, Kamiya T, Fujiwara T, Shikanai T. SQUAMOSA promoter-binding protein-like 7 mediates copper deficiency response in the presence of high nitrogen in Arabidopsis thaliana. PLANT CELL REPORTS 2019; 38:835-846. [PMID: 31093688 DOI: 10.1007/s00299-019-02422-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 04/30/2019] [Indexed: 06/09/2023]
Abstract
SQUAMOSA promoter-binding protein-like 7 mediates copper deficiency response in the presence of high nitrogen even with the sufficient level of copper in Arabidopsis thaliana. Under copper (Cu) deficiency, accumulation of mRNA encoding two Cu/Zn superoxide dismutases, CSD1 and CSD2, is downregulated to save Cu for plastocyanin. This downregulation depends on miR398 and is under the control of SQUAMOSA promoter-binding protein-like7 (SPL7). Arabidopsis seedlings are routinely cultured on Murashige and Skoog medium. However, the high nitrogen (N) content of the medium (60 mM) has been shown to induce a similar response to Cu deficiency. The mRNA and protein levels of CSD1 and CSD2 are reduced under high N conditions, even if the Cu concentration in the medium is sufficient (0.1-0.5 µM). In this study, we show that this symptom, similar to the Cu deficiency, occurred in the presence of high N largely depending on SPL7, suggesting that plants actually sensed Cu deficiency. However, a change in N concentration in the medium did not influence the total Cu concentration in shoots or roots. High N did not increase the protein content in leaves but facilitated rapid seedling growth. We speculate that this rapid growth causes a continuous Cu deficiency mainly because of high Cu uptake by mesophyll cells in the leaves. This idea was supported by the observation that plastocyanin did not overaccumulate at the range of 0.1-0.5 µM Cu with 30 mM N. In contrast, in the presence of 5 µM Cu with 30 mM N, plants accumulate more Cu in plastocyanin in the thylakoid lumen, resulting in a slight Cu deficiency in the chloroplast stroma. This process is independent of SPL7.
Collapse
Affiliation(s)
- Mélanie Mermod
- Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan
| | - Mari Takusagawa
- Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan
| | - Teruyuki Kurata
- Graduate School of Agriculture, Kyushu University, Fukuoka, 812-8581, Japan
| | - Takehiro Kamiya
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, 113-8657, Japan
| | - Toru Fujiwara
- Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, 113-8657, Japan
| | | |
Collapse
|
22
|
Thangaraj S, Shang X, Sun J, Liu H. Quantitative Proteomic Analysis Reveals Novel Insights into Intracellular Silicate Stress-Responsive Mechanisms in the Diatom Skeletonema dohrnii. Int J Mol Sci 2019; 20:E2540. [PMID: 31126124 PMCID: PMC6566588 DOI: 10.3390/ijms20102540] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 05/19/2019] [Accepted: 05/20/2019] [Indexed: 01/04/2023] Open
Abstract
Diatoms are a successful group of marine phytoplankton that often thrives under adverse environmental stress conditions. Members of the Skeletonema genus are ecologically important which may subsist during silicate stress and form a dense bloom following higher silicate concentration. However, our understanding of diatoms' underlying molecular mechanism involved in these intracellular silicate stress-responses are limited. Here an iTRAQ-based proteomic method was coupled with multiple physiological techniques to explore distinct cellular responses associated with oxidative stress in the diatom Skeletonema dohrnii to the silicate limitation. In total, 1768 proteins were detected; 594 proteins were identified as differentially expressed (greater than a two-fold change; p < 0.05). In Si-limited cells, downregulated proteins were mainly related to photosynthesis metabolism, light-harvesting complex, and oxidative phosphorylation, corresponding to inducing oxidative stress, and ROS accumulation. None of these responses were identified in Si-limited cells; in comparing with other literature, Si-stress cells showed that ATP-limited diatoms are unable to rely on photosynthesis, which will break down and reshuffle carbon metabolism to compensate for photosynthetic carbon fixation losses. Our findings have a good correlation with earlier reports and provides a new molecular level insight into the systematic intracellular responses employed by diatoms in response to silicate stress in the marine environment.
Collapse
Affiliation(s)
- Satheeswaran Thangaraj
- Tianjin Key Laboratory of Marine Resources and Chemistry, Tianjin University of Science and Technology, No 29, 13th Avenue, TEDA, Tianjin 300457, China.
- Research Center for Indian Ocean Ecosystem, Tianjin University of Science and Technology, No 29, 13th Avenue, TEDA, Tianjin 300457, China.
- Faculty of Food Engineering and Biotechnology, Tianjin University of Science and Technology, No 29, 13th Avenue, TEDA, Tianjin 300457, China.
| | - Xiaomei Shang
- Tianjin Key Laboratory of Marine Resources and Chemistry, Tianjin University of Science and Technology, No 29, 13th Avenue, TEDA, Tianjin 300457, China.
- Research Center for Indian Ocean Ecosystem, Tianjin University of Science and Technology, No 29, 13th Avenue, TEDA, Tianjin 300457, China.
| | - Jun Sun
- Tianjin Key Laboratory of Marine Resources and Chemistry, Tianjin University of Science and Technology, No 29, 13th Avenue, TEDA, Tianjin 300457, China.
- Research Center for Indian Ocean Ecosystem, Tianjin University of Science and Technology, No 29, 13th Avenue, TEDA, Tianjin 300457, China.
| | - Haijiao Liu
- Tianjin Key Laboratory of Marine Resources and Chemistry, Tianjin University of Science and Technology, No 29, 13th Avenue, TEDA, Tianjin 300457, China.
- Research Center for Indian Ocean Ecosystem, Tianjin University of Science and Technology, No 29, 13th Avenue, TEDA, Tianjin 300457, China.
- Institute of Marine Science and Technology, Shandong University, No 27, Shanda Nan Road, Jinan 250110, China.
| |
Collapse
|
23
|
Franić M, Galić V. As, Cd, Cr, Cu, Hg: Physiological Implications and Toxicity in Plants. PLANT METALLOMICS AND FUNCTIONAL OMICS 2019:209-251. [DOI: 10.1007/978-3-030-19103-0_9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|