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Ahmad MSA, Riffat A, Hussain M, Hameed M, Alvi AK. Toxicity and tolerance of nickel in sunflower (Helianthus annuus L.). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:50346-50363. [PMID: 36795210 DOI: 10.1007/s11356-023-25705-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 01/30/2023] [Indexed: 02/17/2023]
Abstract
This study aimed at exploration of nickel (Ni) application (0, 10, 20, 30, and 40 mg L-1) on physiological and biochemical attributes of sunflower cultivars (Hysun-33 and SF-187) grown in sand culture. Results revealed a significant decrease in vegetative parameters in both sunflower cultivars by increasing Ni concentration, although low levels of Ni (10 mg L-1) improved growth attributes to some extent. Among photosynthetic attributes, 30 and 40 mg L-1 Ni application severely reduced the photosynthetic rate (A), stomatal conductance (gs), water use efficiency (WUE), and Ci/Ca ratio but improved the transpiration rate (E) in both sunflower cultivars. The same level of Ni application also reduced leaf water potential, osmotic potentials, and relative water contents but increased leaf turgor potential and membrane permeability. At low level (10 and 20 mg L-1), Ni improved the soluble proteins, while high Ni concentration decreased it. The opposite was true for total free amino acids and soluble sugars. To conclude, the high Ni concentration in various plant organs had a strong impact with the changes in vegetative growth, physiological and biochemical attributes. A positive correlation of growth, physiological, water relations, and gas exchange parameters at low levels of Ni and negative correlation at higher Ni level confirmed that the supplementation of low Ni levels greatly modulated studied attributes. Based on observed attributes, Hysun-33 showed high tolerance to Ni stress as compared to SF-187.
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Affiliation(s)
| | - Alia Riffat
- Department of Botany, University of Agriculture, Faisalabad, Pakistan.
| | - Mumtaz Hussain
- Department of Botany, University of Agriculture, Faisalabad, Pakistan
| | - Mansoor Hameed
- Department of Botany, University of Agriculture, Faisalabad, Pakistan
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Altaf MA, Hao Y, He C, Mumtaz MA, Shu H, Fu H, Wang Z. Physiological and Biochemical Responses of Pepper ( Capsicum annuum L.) Seedlings to Nickel Toxicity. FRONTIERS IN PLANT SCIENCE 2022; 13:950392. [PMID: 35923881 PMCID: PMC9340659 DOI: 10.3389/fpls.2022.950392] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 06/20/2022] [Indexed: 05/23/2023]
Abstract
Globally, heavy metal pollution of soil has remained a problem for food security and human health, having a significant impact on crop productivity. In agricultural environments, nickel (Ni) is becoming a hazardous element. The present study was performed to characterize the toxicity symptoms of Ni in pepper seedlings exposed to different concentrations of Ni. Four-week-old pepper seedlings were grown under hydroponic conditions using seven Ni concentrations (0, 10, 20, 30, 50, 75, and 100 mg L-1 NiCl2. 6H2O). The Ni toxicity showed symptoms, such as chlorosis of young leaves. Excess Ni reduced growth and biomass production, root morphology, gas exchange elements, pigment molecules, and photosystem function. The growth tolerance index (GTI) was reduced by 88-, 75-, 60-, 45-, 30-, and 19% in plants against 10, 20, 30, 50, 75, and 100 mg L-1 Ni, respectively. Higher Ni concentrations enhanced antioxidant enzyme activity, ROS accumulation, membrane integrity [malondialdehyde (MDA) and electrolyte leakage (EL)], and metabolites (proline, soluble sugars, total phenols, and flavonoids) in pepper leaves. Furthermore, increased Ni supply enhanced the Ni content in pepper's leaves and roots, but declined nitrogen (N), potassium (K), and phosphorus (P) levels dramatically. The translocation of Ni from root to shoot increased from 0.339 to 0.715 after being treated with 10-100 mg L-1 Ni. The uptake of Ni in roots was reported to be higher than that in shoots. Generally, all Ni levels had a detrimental impact on enzyme activity and led to cell death in pepper seedlings. However, the present investigation revealed that Ni ≥ 30 mg L-1 lead to a deleterious impact on pepper seedlings. In the future, research is needed to further explore the mechanism and gene expression involved in cell death caused by Ni toxicity in pepper plants.
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Affiliation(s)
- Muhammad Ahsan Altaf
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Horticulture, Hainan University, Haikou, China
- Sanya Nanfan Research Institute of Hainan University, Hainan Yazhou Bay Seed Laboratory, Sanya, China
| | - Yuanyuan Hao
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Horticulture, Hainan University, Haikou, China
| | - Chengyao He
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Horticulture, Hainan University, Haikou, China
| | - Muhammad Ali Mumtaz
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Horticulture, Hainan University, Haikou, China
| | - Huangying Shu
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Horticulture, Hainan University, Haikou, China
| | - Huizhen Fu
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Horticulture, Hainan University, Haikou, China
| | - Zhiwei Wang
- Key Laboratory for Quality Regulation of Tropical Horticultural Crops of Hainan Province, School of Horticulture, Hainan University, Haikou, China
- Sanya Nanfan Research Institute of Hainan University, Hainan Yazhou Bay Seed Laboratory, Sanya, China
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Scartazza A, Di Baccio D, Mariotti L, Bettarini I, Selvi F, Pazzagli L, Colzi I, Gonnelli C. Photosynthesizing while hyperaccumulating nickel: Insights from the genus Odontarrhena (Brassicaceae). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2022; 176:9-20. [PMID: 35182963 DOI: 10.1016/j.plaphy.2022.02.009] [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: 12/27/2021] [Revised: 02/02/2022] [Accepted: 02/10/2022] [Indexed: 06/14/2023]
Abstract
Nickel-induced changes in photosynthetic activity were investigated in three Ni-hyperaccumulating Odontarrhena species with increasing Ni tolerance and accumulation capacity, O. muralis, O. moravensis, and O. chalcidica. Plantlets were grown in hydroponics at increasing NiSO4 concentrations (0, 0.25, and 1 mM) for one week, and the effects of Ni on growth, metal accumulation, photosynthesis, and nitrogen (N) allocation to components of the photosynthetic apparatus were analysed. Nickel treatments in O. chalcidica, and O. moravensis to a lesser extent, increased not only the photochemical efficiency of photosystem II (PSII) and the CO2 assimilation rate, but also CO2 diffusion from the atmosphere to the carboxylation sites. These two species displayed a specific increase and/or rearrangement of the photosynthetic pigments and a higher leaf N allocation to the photosynthetic components in the presence of the metal. Odontarrhena muralis displayed a decrease in photosynthetic performance at the lowest Ni concentration due to a combination of both stomatal and non-stomatal limitations. Our data represent the first complete investigation of the effects of Ni on the photosynthetic machinery in Ni hyperaccumulating plants. Our findings clearly indicate a stimulatory, hormetic-like, effect of the metal on both biophysics and biochemistry of photosynthesis in the species with the highest hyperaccumulation capacity.
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Affiliation(s)
- Andrea Scartazza
- Research Institute on Terrestrial Ecosystems, National Research Council, via Moruzzi 1, I-56124, Pisa, Italy.
| | - Daniela Di Baccio
- Research Institute on Terrestrial Ecosystems, National Research Council, via Moruzzi 1, I-56124, Pisa, Italy.
| | - Lorenzo Mariotti
- Department of Agriculture, Food and Environment, University of Pisa, via Mariscoglio 34, I-56124, Pisa, Italy.
| | - Isabella Bettarini
- Department of Biology, University of Florence, via Micheli 1, I-50121, Firenze, Italy.
| | - Federico Selvi
- Department of Agriculture, Food, Environment and Forest Sciences, Laboratories of Botany, Università degli Studi di Firenze, P. le Cascine 28, I-50144, Firenze, Italy.
| | - Luigia Pazzagli
- Department of Biomedical Experimental and Clinical Sciences, University of Florence, Viale Morgagni 50, I-50134, Firenze, Italy.
| | - Ilaria Colzi
- Department of Biology, University of Florence, via Micheli 1, I-50121, Firenze, Italy.
| | - Cristina Gonnelli
- Department of Biology, University of Florence, via Micheli 1, I-50121, Firenze, Italy.
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Baran U, Ekmekçi Y. Physiological, photochemical, and antioxidant responses of wild and cultivated Carthamus species exposed to nickel toxicity and evaluation of their usage potential in phytoremediation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:4446-4460. [PMID: 34409529 DOI: 10.1007/s11356-021-15493-y] [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: 04/29/2021] [Accepted: 07/13/2021] [Indexed: 06/13/2023]
Abstract
The impacts of Ni toxicity on growth behaviors, photochemical, and antioxidant enzymes activities of wild (Carthamus oxyacantha M. Bieb.) and cultivated (Carthamus tinctorius L.) safflower species were investigated in this study. Fourteen-day-old seedlings were treated with excessive Ni levels [control, 0.5, 0.75, and 1.0 mM NiCl2·6H2O] for 7 days. The results of chlorophyll a fluorescence indicated that toxic nickel exposure led to changes in specific, phenomenological energy fluxes and quantum yields in thylakoid membranes, and activities of donor and acceptor sides of photosystems. These changes resulted in a significant decrease in the photosynthetic activities by about 50% in both species, but these negative effects of Ni were not in a level to destroy the functionality of the photosystems. At the same time, toxic Ni affected membrane integrity and the amount of photosynthetic pigments in the antenna and active reaction centers. Additionally, the accumulation of Ni was higher in roots than in stem and leaves for both species. Depending on Ni accumulation, a significant reduction in dry biomass of root by approx. 64.8 and 45.7% and shoot by 41 and 24.7% were observed in wild and cultivated species, respectively. Two species could probably withstand deleterious Ni toxicity with better upregulating own protective defense systems such as antioxidant enzymes and phenolic compounds. Among of them, SOD and POD activities were increased with increasing Ni concentrations. The POD activities of both species were most prominent and consistently increased (approx. 2 folds in roots and 6 folds in leaves) in highly toxic Ni levels and may be protected them from damaging effect of H2O2. When all results are evaluated as a whole, Carthamus species produced similar responses to toxicity and also both species have bioconcentration (BCF) and bioaccumulation factor (BF) > 1 and translocation factor < 1 under Ni toxicity may be regarded a good indication of Ni tolerance. Furthermore, it is possible to use the Carthamus species as phytostabilizers of soils contaminated with nickel, because of their roots accumulating more nickel.
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Affiliation(s)
- Uğurcan Baran
- Akdeniz University, Faculty o f Science, Department of Biology, 07058, Antalya, Turkey
| | - Yasemin Ekmekçi
- Hacettepe University, Faculty of Science, Department of Biology, 06800, Ankara, Turkey.
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Sabir M, Naseem Z, Ahmad W, Usman M, Nadeem F, Ahmad HR. Alleviation of adverse effects of nickel on growth and concentration of copper and manganese in wheat through foliar application of ascorbic acid. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2021; 24:695-703. [PMID: 34382480 DOI: 10.1080/15226514.2021.1962801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We investigated the role of ascorbic acid (AsA) to alleviate nickel (Ni) induced adverse effects on growth and concentration of Ni, copper (Cu), and manganese (Mn) in hydroponically grown wheat varieties viz. Galaxy, Punjab-2011, and FSD-08. Plants were exposed to five levels of Ni viz. 0, 5, 10, 15, and 20 mg L-1. After 1 week, AsA (1 mM) was sprayed onto the Ni-stressed plants. FSD-08 produced the maximum SDW with and without AsA compared to other varieties. FSD-08, Galaxy, and Punjab-2011 witnessed 2.61-, 2.83-, and 7.5-fold increases in SDW with AsA, respectively. Wheat plants contained the maximum Ni in shoots and roots with a Ni level of 20 mg L-1 irrespective of varieties. Nickel in shoots decreased with AsA witnessing 13, 12, and 10% decrease in FSD-08, Punjab-2011, and Galaxy, respectively. Nickel in roots of FSD-08 decreased by 18% while increased by 3.34-fold and 3.50-fold in Galaxy and Punjab-2011, respectively with AsA. Nickel decreased Cu in shoot and Mn in shoot and root while Cu in roots of all wheat varieties increased. It was concluded that AsA improved the growth of Ni-stressed and FSD-08 performed better by maintaining good growth and less Ni in shoots compared to other varieties.
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Affiliation(s)
- Muhammad Sabir
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Pakistan
| | - Zainab Naseem
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Pakistan
| | - Waqar Ahmad
- Faculty of Science, School of Life and Environmental Sciences, University of Sydney, Eveleigh, Australia
| | - Muhammad Usman
- Institute of Horticultural Sciences, University of Agriculture, Faisalabad, Pakistan
| | - Faisal Nadeem
- MOE Key Laboratory of Plant-Soil Interactions, Department of Plant Nutrition, China Agricultural University, Beijing, China
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Hamaad Raza Ahmad
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad, Pakistan
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Elferjani R, Benomar L, Momayyezi M, Tognetti R, Niinemets Ü, Soolanayakanahally RY, Théroux-Rancourt G, Tosens T, Ripullone F, Bilodeau-Gauthier S, Lamhamedi MS, Calfapietra C, Lamara M. A meta-analysis of mesophyll conductance to CO2 in relation to major abiotic stresses in poplar species. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:4384-4400. [PMID: 33739415 PMCID: PMC8163042 DOI: 10.1093/jxb/erab127] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 03/17/2021] [Indexed: 05/16/2023]
Abstract
Mesophyll conductance (gm) determines the diffusion of CO2 from the substomatal cavities to the site of carboxylation in the chloroplasts and represents a critical component of the diffusive limitation of photosynthesis. In this study, we evaluated the average effect sizes of different environmental constraints on gm in Populus spp., a forest tree model. We collected raw data of 815 A-Ci response curves from 26 datasets to estimate gm, using a single curve-fitting method to alleviate method-related bias. We performed a meta-analysis to assess the effects of different abiotic stresses on gm. We found a significant increase in gm from the bottom to the top of the canopy that was concomitant with the increase of maximum rate of carboxylation and light-saturated photosynthetic rate (Amax). gm was positively associated with increases in soil moisture and nutrient availability, but was insensitive to increasing soil copper concentration and did not vary with atmospheric CO2 concentration. Our results showed that gm was strongly related to Amax and to a lesser extent to stomatal conductance (gs). Moreover, a negative exponential relationship was obtained between gm and specific leaf area, which may be used to scale-up gm within the canopy.
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Affiliation(s)
- Raed Elferjani
- Quebec Network for Reforestation and Intensive Silviculture, TELUQ University, Montreal, QC, H2S 3L5, Canada
| | - Lahcen Benomar
- Forest Research Institute, University of Quebec in Abitibi-Temiscamingue, Rouyn-Noranda, QC, J9X 5E4, Canada
- Correspondence:
| | - Mina Momayyezi
- Department of Viticulture and Enology, University of California, Davis, CA 95616, USA
| | - Roberto Tognetti
- Università degli Studi del Molise, Via De Sanctis, 86100 Campobasso, Italy
| | - Ülo Niinemets
- Estonian University of Life Sciences, Kreutzwaldi 1, 51006 Tartu, Estonia
| | | | - Guillaume Théroux-Rancourt
- Institute of Botany, University of Natural Resources and Life Sciences, Gregor-Mendel-Strasse 33, 1180 Vienna, Austria
| | - Tiina Tosens
- Estonian University of Life Sciences, Kreutzwaldi 1, 51006 Tartu, Estonia
| | | | | | - Mohammed S Lamhamedi
- Direction de la Recherche Forestière, 2700 rue Einstein, Québec, QC, G1P 3W8, Canada
| | - Carlo Calfapietra
- Institute of Agro-Environmental & Forest Biology (IBAF), National Research Council (CNR), Via Marconi 2, Porano (TR) 05010, Italy
| | - Mebarek Lamara
- Forest Research Institute, University of Quebec in Abitibi-Temiscamingue, Rouyn-Noranda, QC, J9X 5E4, Canada
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Huang X, Zhu F, He Z, Chen X, Wang G, Liu M, Xu H. Photosynthesis Performance and Antioxidative Enzymes Response of Melia azedarach and Ligustrum lucidum Plants Under Pb-Zn Mine Tailing Conditions. FRONTIERS IN PLANT SCIENCE 2020; 11:571157. [PMID: 33042188 PMCID: PMC7522552 DOI: 10.3389/fpls.2020.571157] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 08/27/2020] [Indexed: 06/11/2023]
Abstract
Lead-zinc (Pb-Zn) mine tailings pose a great risk to the natural environment and human health because of their high toxicity. In this study, the responses of photosynthesis, chlorophyll fluorescence, and antioxidative enzyme of Melia azedarach and Ligustrum lucidum in the soil contaminated by Pb-Zn mine tailings were investigated. Results showed that Pb-Zn mine tailings significantly reduced net photosynthetic rates and leaf photosynthetic pigment content of both trees, and the reduction of net photosynthetic rates was mainly caused by their biochemical limitation (BL). The chlorophyll fluorescence parameters from Pb-Zn tailing stressed leaves indicated that Pb-Zn tailings affected PSII activity which was evident from the change values of energy fluxes per reaction center (RC): probability that an electron moves further than QA - (ETO/TRO), maximum quantum yield for primary photochemistry (TRO/ABS), the density of PSII RC per excited cross-section (RC/CSO), the absorption of antenna chlorophylls per PSII RC (ABS/RC), and the turnover number of QA reduction events (N). Pb-Zn mine tailings also affected the oxidation and reduction of PSI, which resulted in a great increase of reactive oxygen species (ROS) contents and then stimulated the rate of lipid peroxidation. Both trees exhibited certain antioxidative defense mechanisms as elevated superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) activities, then declined under high level of Pb-Zn tailing treatment. Comparatively, L. lucidum showed less extent effect on photosynthesis and higher antioxidative enzyme activities than M. azedarach; thus L. lucidum was more tolerant than M. azedarach at least under the described Pb-Zn tailing treatment. These results indicate that the effect of Pb-Zn mine tailings on photosynthesis performance mainly related to imbalance of the PSII activity and PSI redox state in both trees. We propose that M. azedarach and L. lucidum could relieve the oxidative stress for phytoremediation under the appropriate Pb-Zn mine tailing content.
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Affiliation(s)
- XinHao Huang
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, China
| | - Fan Zhu
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, China
- National Engineering Laboratory for Applied Forest Ecological Technology in Southern China, Central South University of Forestry and Technology, Changsha, China
| | - ZhiXiang He
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, China
| | - XiaoYong Chen
- National Engineering Laboratory for Applied Forest Ecological Technology in Southern China, Central South University of Forestry and Technology, Changsha, China
- College of Arts and Sciences, Governors State University, University Park, IL, United States
| | - GuangJun Wang
- College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, China
- National Engineering Laboratory for Applied Forest Ecological Technology in Southern China, Central South University of Forestry and Technology, Changsha, China
| | - MengShan Liu
- National Engineering Laboratory for Applied Forest Ecological Technology in Southern China, Central South University of Forestry and Technology, Changsha, China
| | - HongYang Xu
- National Engineering Laboratory for Applied Forest Ecological Technology in Southern China, Central South University of Forestry and Technology, Changsha, China
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Accumulation of Airborne Toxic Elements and Photosynthetic Performance of Lolium multiflorum L. Leaves. Processes (Basel) 2020. [DOI: 10.3390/pr8091013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In this study, we aimed to investigate the accumulation of airborne trace elements in Lolium multiflorum leaves concerning photosynthetic activity parameters. Five sites for four 28-day series of plant exposition were selected. The concentration of trace elements in leaves was measured after each series, while photosynthetic activity parameters were measured three times during each series. Net photosynthesis rate (PN) and stomatal conductance (gs) were mostly negatively associated with all analyzed trace elements, unlike to CO2 concentrations (Ci). Arsenic was found with opposite trend in two exposure series. The high accumulation of Cd and Pb in plants recorded at two sites was mostly related to lowest PN and gs. Similar tendency for PN was found at sites and series with the highest Cr and Ni content in plants. L. multiflorum revealed a medium-level accumulation of trace elements and a low tolerance of the photosynthetic process to the presence of trace elements in ambient air.
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Khan MIR, Jahan B, AlAjmi MF, Rehman MT, Khan NA. Ethephon mitigates nickel stress by modulating antioxidant system, glyoxalase system and proline metabolism in Indian mustard. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2020; 26:1201-1213. [PMID: 32549683 PMCID: PMC7266911 DOI: 10.1007/s12298-020-00806-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 12/22/2019] [Accepted: 03/27/2020] [Indexed: 05/09/2023]
Abstract
The role of ethylene (through application of ethephon) in the regulation of nickel (Ni) stress tolerance was investigated in this study. Ethephon at concentration of 200 µl l-1 was applied to mustard (Brassica juncea) plants grown without and with 200 mg kg-1 soil Ni to study the increased growth traits, biochemical attributes, photosynthetic efficiency, nutrients content, activities of antioxidants such as superoxide dismutase, ascorbate peroxidase, glutathione reductase, and glutathione peroxidase, glyoxalase systems and enhanced the proline metabolism. In the absence of ethephon, Ni increased oxidative stress with a concomitant decrease in photosynthesis, growth and nutrients content. However, application of ethephon positively increased growth traits, photosynthetic parameters, nutrients content and also elevated the generation of antioxidants enzymes and glyoxalase systems, proline production to combat oxidative stress. Plants water relations and cellular homeostasis were maintained through increased photosynthetic efficiency and proline production. This signifies the role of ethylene in mediating Ni tolerance via regulating proline production and photosynthetic capacity. Ethephon can be used as an exogenous supplement on plants to confer Ni tolerance. The results can be exploited to develop tolerance in plants via gene editing technology encoding enzymes responsible for proline synthesis, antioxidant defence, glyoxalase systems and photosynthetic effectiveness.
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Affiliation(s)
- M. Iqbal R. Khan
- Department of Botany, Aligarh Muslim University, Aligarh, 202002 India
- Department of Botany, Jamia Hamdard, New Delhi, 110062 India
| | - Badar Jahan
- Department of Botany, Aligarh Muslim University, Aligarh, 202002 India
| | - Mohamed F. AlAjmi
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh, 11451 Kingdom of Saudi Arabia
| | - Md Tabish Rehman
- Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh, 11451 Kingdom of Saudi Arabia
| | - Nafees A. Khan
- Department of Botany, Aligarh Muslim University, Aligarh, 202002 India
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Impact of Drought and Salinity on Sweetgum Tree (Liquidambar styraciflua L.): Understanding Tree Ecophysiological Responses in the Urban Context. FORESTS 2019. [DOI: 10.3390/f10111032] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Understanding urban tree responses to drought, salt stress, and co-occurring stresses, as well as the capability to recover afterward, is important to prevent the cited stresses’ negative effects on tree performance and ecological functionality. We investigated the impact of drought and salinity, alone and in combination, on leaf water potential, gas exchange, chlorophyll a fluorescence, xanthophyll cycle pigments, and isoprene emission of the urban tree species Liquidambar styraciflua L. Generally, drought had a rapid negative impact, while the effect of salt stress was more long lasting. Both stressors significantly decreased photosynthesis, transpiration, and stomatal conductance, as well as the maximum quantum efficiency of photosystem II (Fv/Fm) and the photochemical efficiency of PSII (ΦPSII), but increased nonphotochemical quenching (NPQ). Under stress conditions, a strong negative correlation between the PSII efficiency and the xanthophyll cycle pigment composition indicated a nocturnal retention of zeaxanthin and antheraxanthin in a state primed for energy dissipation. Drought and salt stress inhibited isoprene emission from leaves, although its emission was less responsive to stresses than stomatal conductance and photosynthesis. Full recovery of photosynthetic parameters took place after rewatering and washing off of excess salt, indicating that no permanent damage occurred, and suggesting downregulation rather than permanent impairment of the photosynthetic apparatus. Sweetgum trees were capable of withstanding and surviving moderate drought and salt events by activating defense mechanisms conferring tolerance to environmental stresses, without increasing the emission in the atmosphere of the highly reactive isoprene.
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Khanna K, Kohli SK, Ohri P, Bhardwaj R, Al-Huqail AA, Siddiqui MH, Alosaimi GS, Ahmad P. Microbial Fortification Improved Photosynthetic Efficiency and Secondary Metabolism in Lycopersicon esculentum Plants Under Cd Stress. Biomolecules 2019; 9:biom9100581. [PMID: 31591372 PMCID: PMC6843591 DOI: 10.3390/biom9100581] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 10/02/2019] [Accepted: 10/02/2019] [Indexed: 11/16/2022] Open
Abstract
Environmental stress including heavy metal pollution is increasing at high speed and is polluting the cultivable land. Consequently, it results in affecting human population through entering into food chain. The current study aims that Cd stress (0.4 mM) led to toxicity and deleterious effects on 45-day-old Lycopersicon esculentum plants. The use of rhizobacterial strains underlines the main hypothesis of the present research that have been exploited in order to alleviate the Cd induced stress in plants and promoting their growth sidewise. The morphological parameters, plant pigments, and gaseous exchange parameters were estimated and found to be reduced in plants due to Cd toxicity. Along with this, the levels of phenolic compounds and osmoprotectants were stimulated in plants raised in Cd spiked soils. In addition, free amino acid content was reduced in plants under Cd treatment. It was revealed that these bacterial strains Pseudomonas aeruginosa (M1) and Burkholderia gladioli (M2) when inoculated to tomato plants improved the morphological characteristics and enhanced photosynthetic attributes. Moreover, the level of phenolic compounds and osmoprotectants were further enhanced by both the inoculating agents independently. However, in situ localization studies of phenol accumulation in root sections was found to be enhanced in Cd treated plants as revealed through higher intensity of yellowish-brown colour. The supplementation of bacterial strains further accumulated the phenols in Cd stressed root sections as evidenced through increased colour intensity. Therefore, the present study suggested that bacterial strains mitigates Cd stress from tomato plants through improving morphological, physiological and metabolite profiles. Consequently, the present research advocates the best utilization of rhizobacteria as stress alleviators for sustainable agriculture.
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Affiliation(s)
- Kanika Khanna
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar 143005, India
| | - Sukhmeen Kaur Kohli
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar 143005, India
| | - Puja Ohri
- Department of Zoology, Guru Nanak Dev University, Amritsar 143005, India
| | - Renu Bhardwaj
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar 143005, India.
| | - Asma A Al-Huqail
- Department of Botany and Microbiology, King Saud University, Riyadh, Saudi Arabia
| | - Manzer H Siddiqui
- Department of Botany and Microbiology, King Saud University, Riyadh, Saudi Arabia
| | - Ghada Saleh Alosaimi
- Department of Botany and Microbiology, King Saud University, Riyadh, Saudi Arabia
| | - Parvaiz Ahmad
- Department of Botany and Microbiology, King Saud University, Riyadh, Saudi Arabia.
- Department of Botany, S.P. College Srinagar, Jammu and Kashmir, India.
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12
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Dos Santos MS, Sanglard LMPV, Martins SCV, Barbosa ML, de Melo DC, Gonzaga WF, DaMatta FM. Silicon alleviates the impairments of iron toxicity on the rice photosynthetic performance via alterations in leaf diffusive conductance with minimal impacts on carbon metabolism. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2019; 143:275-285. [PMID: 31536896 DOI: 10.1016/j.plaphy.2019.09.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 08/09/2019] [Accepted: 09/05/2019] [Indexed: 06/10/2023]
Abstract
Iron (Fe) toxicity is often observed in lowland rice (Oryza sativa L.) plants, disrupting cell homeostasis and impairing growth and crop yields. Silicon (Si) can mitigate the effects of Fe excess on rice by decreasing tissue Fe concentrations, but no information exists whether Si could prevent the harmful effects of Fe toxicity on the photosynthesis and carbon metabolism. Two rice cultivars with contrasting abilities to tolerate Fe excess were hydroponically grown under two Fe levels (25 μM or 5 mM) and amended or not with Si (0 or 2 mM). Fe toxicity caused decreases in net photosynthetic rate (A), particularly in the sensitive cultivar. These decreases were correlated with reductions in stomatal (gs) and mesophyll (gm) conductances, as well as with increasing photorespiration. Photochemical (e.g. electron transport rate) and biochemical (e.g., maximum RuBisCO carboxylation capacity and RuBisCO activity) parameters of photosynthesis, and activities of a range of carbon metabolism enzymes, were minimally, if at all, affected by the treatments. Si attenuated the decreases in A by presumably reducing the Fe content. In fact, A as well as gs and gm, correlated significantly with leaf Fe contents. In summary, our data suggest a remarkable metabolic homeostasis under Fe toxicity, and that Si attenuated the impairments of Fe excess on the photosynthetic apparatus by affecting the leaf diffusive conductance with minimal impacts on carbon metabolism.
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Affiliation(s)
- Martielly S Dos Santos
- Departamento Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 3570-900, Viçosa, MG, Brazil
| | - Lílian M P V Sanglard
- Departamento Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 3570-900, Viçosa, MG, Brazil
| | - Samuel C V Martins
- Departamento Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 3570-900, Viçosa, MG, Brazil
| | - Marcela L Barbosa
- Departamento Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 3570-900, Viçosa, MG, Brazil
| | - Danilo C de Melo
- Departamento Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 3570-900, Viçosa, MG, Brazil
| | - William F Gonzaga
- Departamento Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 3570-900, Viçosa, MG, Brazil
| | - Fábio M DaMatta
- Departamento Departamento de Biologia Vegetal, Universidade Federal de Viçosa, 3570-900, Viçosa, MG, Brazil.
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13
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Chen J, Bi H, Yu X, Fu Y, Liao W. Influence of physiological and environmental factors on the diurnal variation in emissions of biogenic volatile compounds from Pinus tabuliformis. J Environ Sci (China) 2019; 81:102-118. [PMID: 30975314 DOI: 10.1016/j.jes.2019.01.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 01/23/2019] [Accepted: 01/24/2019] [Indexed: 06/09/2023]
Abstract
Biological volatile organic compounds (BVOCs) have a large influence on atmospheric environmental quality, climate change and the carbon cycle. This study assesses the composition and diurnal variation in emission rates of BVOCs from Pinus tabuliformis, using an enclosure technique. Environmental parameters (temperature and light intensity) and physiological parameters (net photosynthetic rate, Pn; stomatal conductance, gs; intercellular CO2 concentration, Ci; and transpiration rate, Tr) that may affect emission behavior were continuously monitored. The 10 most abundant compound groups emitted by P. tabuliformis were classified by gas chromatography-mass spectrometry. The dominant monoterpenoid compounds emitted were α-pinene, β-myrcene, α-farnesene and limonene. The diurnal emission rate of BVOCs changed with temperature and light intensity, with dynamic analysis of BVOCs emissions revealing that their emission rates were more affected by temperature than light. The variation in monoterpene emission rates was consistent with estimates of Pn, gs and Tr. Basal emission rates (at 30 °C,) of the main BVOCs ranged from 0.006 to 0.273 μg -1/(hr g), while the basal ER standardization coefficients ranged from 0.049 to 0.144 °C-1. Overall, these results provide a detailed reference for the effective selection and configuration of tree species to effectively prevent and control atmospheric pollution.
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Affiliation(s)
- Jungang Chen
- College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China; Institute of Ecology, College of Urban and Environmental Sciences, and Key Laboratory for Earth Surface Processes of the Ministry of Education, Peking University, Beijing 100871, China
| | - Huaxing Bi
- College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China; Ji County Station, Chinese National Ecosystem Research Network (CNERN), Beijing 100083, China; Key Laboratory of State Forestry Administration on Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China; Beijing Engineering Research Center of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China; Engineering Research Center of Forestry Ecological Engineering, Ministry of Education, Beijing Forestry University, Beijing 100083, China; Beijing Collaborative Innovation Center for Eco-Environmental Improvement With Forestry and Fruit Trees, 102206 Beijing, China.
| | - Xinxiao Yu
- College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China
| | - Yanlin Fu
- College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China
| | - Wenchao Liao
- Beijing Water Consulting Co., LTD, 100048 Beijing, China
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14
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Ameen N, Amjad M, Murtaza B, Abbas G, Shahid M, Imran M, Naeem MA, Niazi NK. Biogeochemical behavior of nickel under different abiotic stresses: toxicity and detoxification mechanisms in plants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:10496-10514. [PMID: 30835069 DOI: 10.1007/s11356-019-04540-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Accepted: 02/07/2019] [Indexed: 05/25/2023]
Abstract
Nickel (Ni) is a ubiquitous and highly important heavy metal. At low levels, Ni plays an essential role in plants such as its role in urease, superoxide dismutase, methyl-coenzyme M reductase, hydrogenase, acetyl-coenzyme A synthase, and carbon monoxide dehydrogenase enzyme. Although its deficiency in crops is very uncommon, but in the past few years, many studies have demonstrated Ni deficiency symptoms in plants. On the other hand, high levels of applied Ni can provoke numerous toxic effects (such as biochemical, physiological, and morphological) in plant tissues. Most importantly, from an ecological and risk assessment point of view, this metal has narrow ranges of its essential, beneficial, and toxic concentrations to plants, which significantly vary with plant species. This implies that it is of great importance to monitor the levels of Ni in different environmental compartments from which it can enter plants. Additionally, several abiotic stresses (such as salinity and drought) have been reported to affect the biogeochemical behavior of Ni in the soil-plant system. Thus, it is also important to assess Ni behavior critically under different abiotic stresses, which can greatly affect its role being an essential or toxic element. This review summarizes and critically discusses data about sources, bioavailability, and adsorption/desorption of Ni in soil; its soil-plant transfer and effect on other competing ions; accumulation in different plant tissues; essential and toxic effects inside plants; and tolerance mechanisms adopted by plants under Ni stress.
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Affiliation(s)
- Nuzhat Ameen
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari, 61100, Pakistan
| | - Muhammad Amjad
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari, 61100, Pakistan.
| | - Behzad Murtaza
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari, 61100, Pakistan.
| | - Ghulam Abbas
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari, 61100, Pakistan
| | - Muhammad Shahid
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari, 61100, Pakistan
| | - Muhammad Imran
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari, 61100, Pakistan
| | - Muhammad Asif Naeem
- Department of Environmental Sciences, COMSATS University Islamabad, Vehari Campus, Vehari, 61100, Pakistan
| | - Nabeel K Niazi
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad, 38040, Pakistan
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15
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Shahzad B, Tanveer M, Rehman A, Cheema SA, Fahad S, Rehman S, Sharma A. Nickel; whether toxic or essential for plants and environment - A review. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2018; 132:641-651. [PMID: 30340176 DOI: 10.1016/j.plaphy.2018.10.014] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 09/15/2018] [Accepted: 10/10/2018] [Indexed: 05/03/2023]
Abstract
Nickel (Ni) is becoming a toxic pollutant in agricultural environments. Due to its diverse uses from a range of common household items to industrial applications, it is essential to examine Ni bioavailability in soil and plants. Ni occurs in the environment (soil, water and air) in very small concentrations and eventually taken up by plants through roots once it becomes available in soil. It is an essential nutrient for normal plant growth and development and required for the activation of several enzymes such as urease, and glyoxalase-I. Ni plays important roles in a wide range of physiological processes including seed germination, vegetative and reproductive growth, photosynthesis as well as in nitrogen metabolism. Therefore, plants cannot endure their life cycle without adequate Ni supply. However, excessive Ni concentration can lead to induce ROS production affecting numerous physiological and biochemical processes such as photosynthesis, transpiration, as well as mineral nutrition and causes phytotoxicity in plants. ROS production intensifies the disintegration of plasma membranes and deactivates functioning of vital enzymes through lipid peroxidation. This review article explores the essential roles of Ni in the life cycle of plant as well as its toxic effects in details. In conclusion, we have proposed different viable approaches for remediation of Ni-contaminated soils.
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Affiliation(s)
- Babar Shahzad
- School of Land and Food, University of Tasmania, Hobart, TAS, Australia.
| | - Mohsin Tanveer
- School of Land and Food, University of Tasmania, Hobart, TAS, Australia.
| | - Abdul Rehman
- Department of Agronomy, University of Agriculture, Faisalabad, Pakistan
| | | | - Shah Fahad
- College of Plant Science and Technology, Huazhong Agricultural University, Hubei, China
| | - Shamsur Rehman
- National Maize Key Laboratory, Department of Crop Biotechnology, School of Life Sciences, Anhui Agricultural University, Hefei, 230036, China
| | - Anket Sharma
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, 143005, Punjab, India
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Bibbiani S, Colzi I, Taiti C, Guidi Nissim W, Papini A, Mancuso S, Gonnelli C. Smelling the metal: Volatile organic compound emission under Zn excess in the mint Tetradenia riparia. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2018; 271:1-8. [PMID: 29650146 DOI: 10.1016/j.plantsci.2018.03.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 02/27/2018] [Accepted: 03/06/2018] [Indexed: 06/08/2023]
Abstract
This work investigated the effect of Zn excess on growth, metal accumulation and photosynthetic changes in Tetradenia riparia, in relation to possible variations in the composition of the plant volatilome. Experiments were carried out in hydroponics exposing plants to a range of Zn concentrations. Zinc excess negatively affected plant growth in a dose-dependent manner. The metal was accumulated proportionally to its concentration in the medium and preferentially allocated to roots. All the photosynthetic parameters and the concentration of some photosynthetic pigments were negatively affected by Zn, whereas the level of leaf total soluble sugars remained unchanged. Twenty-three different VOCs were identified in the plant volatilome. Each compound was emitted at a different level and intensity of emission was manifold increased by the presence of Zn in the growth medium. The Zn-induced compounds could represent both an adaptive response (f.i. methanol, acetylene, C6-aldehydes, isoprene, terpenes) and a damage by-product (f.i. propanal, acetaldehyde, alkyl fragments) of the metal presence in the culture medium. Given that the Zn-mediated induction of those VOCs, considered protective, occurred even under a Zn-limited photosynthetic capacity, our work supports the hypothesis of an active role of such molecules in an adaptive plant response to trace metal stress.
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Affiliation(s)
- Susanna Bibbiani
- Department of Agrifood Production and Environmental Sciences - Università degli Studi di Firenze, Viale delle Idee 30, 50019 Sesto Fiorentino, Florence, Italy.
| | - Ilaria Colzi
- Department of Biology, Università degli Studi di Firenze, via Micheli 1, 50121 Florence, Italy.
| | - Cosimo Taiti
- Department of Agrifood Production and Environmental Sciences - Università degli Studi di Firenze, Viale delle Idee 30, 50019 Sesto Fiorentino, Florence, Italy.
| | - Werther Guidi Nissim
- Department of Agrifood Production and Environmental Sciences - Università degli Studi di Firenze, Viale delle Idee 30, 50019 Sesto Fiorentino, Florence, Italy.
| | - Alessio Papini
- Department of Biology, Università degli Studi di Firenze, via Micheli 1, 50121 Florence, Italy.
| | - Stefano Mancuso
- Department of Agrifood Production and Environmental Sciences - Università degli Studi di Firenze, Viale delle Idee 30, 50019 Sesto Fiorentino, Florence, Italy.
| | - Cristina Gonnelli
- Department of Biology, Università degli Studi di Firenze, via Micheli 1, 50121 Florence, Italy.
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17
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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: 160] [Impact Index Per Article: 26.7] [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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18
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Differential physiological responses and tolerance to potentially toxic elements in biodiesel tree Jatropha curcas. Sci Rep 2018; 8:1635. [PMID: 29374257 PMCID: PMC5786012 DOI: 10.1038/s41598-018-20188-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 01/09/2018] [Indexed: 11/08/2022] Open
Abstract
Environmental pollution by potentially toxic elements (PTEs) has become a serious problem with increasing industrialization and the disturbance of natural biogeochemical cycles. Jatropha is an oilseed-bearing shrub with high potential for biodiesel production in arid regions. In this study, we examined the physiological responses of this plant to five representative PTEs (Cd, Cr, Cu, Ni, and Zn) in a hydroponic culture. Application of higher concentrations of Cd and Zn led to severe leaf chlorosis, and Cd, Cu, and Ni treatments resulted in significant growth retardation. Higher enrichment of the applied PTEs in the shoots was observed for Zn- and Cd-treated plants, with the latter reaching 24-fold enrichment in plants exposed to 10 μM Cd, suggesting that Jatropha can cope with relatively higher internal concentrations of toxic Cd. Although Cd stress led to the disturbance of essential mineral homeostasis and photosynthesis, this induced an increase in thiol compounds in the roots, suggesting defensive responses of Jatropha to PTEs. This study showed that Jatropha exhibits distinct sensitivities and physiological responses to different PTEs. This study also provides basic knowledge for diagnosing the physiological status of Jatropha trees for potential dual use in afforestation and as a sustainable energy supply.
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Pérez-Romero JA, Redondo-Gómez S, Mateos-Naranjo E. Growth and photosynthetic limitation analysis of the Cd-accumulator Salicornia ramosissima under excessive cadmium concentrations and optimum salinity conditions. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2016; 109:103-113. [PMID: 27665044 DOI: 10.1016/j.plaphy.2016.09.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Revised: 09/14/2016] [Accepted: 09/14/2016] [Indexed: 05/21/2023]
Abstract
Cadmium (Cd) is a non-essential element for plants, and its excess impairs plant performance. Physiological impacts of Cd excess are well known in non-tolerant plants, however this information is scarce for Cd-tolerant plants. A glasshouse experiment was designed to investigate the effect of five different Cd levels (0, 0.05, 0.20, 0.65 and 1.35 mM Cd) on the growth, photosynthetic apparatus (PSII chemistry), gas exchange characteristics, photosynthetic pigments profiles, water relations and nutritional balance of the Cd-accumulator Salicornia ramosissima. Ours results confirmed the accumulation capacity of S. ramosissima, as indicated the bioaccumulation factor (BC) greater than 1.0 for all Cd levels. Furthermore, after 21 days of treatment S. ramosissima growth was not highly affected by Cd. Total photosynthetic limitation increased from 38% at 0.05 mM Cd to 70% at 1.35 mM Cd. CO2 diffusion restriction imposed the main contribution to total photosynthetic limitation. Mesophyll conductance reduction was of major importance (with between 69 and 86%), followed by stomatal conductance (with between 9 and 20%). Maximum carboxylation rate (Vc,max), remained stable until 0.2 mM Cd, and chlorophyll fluorescence parameters (Fv/Fm, qP) and pigments concentrations were not significantly decreased by increased Cd supply. Finally, S. ramosissima water relations (intrinsic water use efficiency and relative water content) and nutritional level did not highly vary between Cd treatments. Thus, our finding suggested that Cd tolerance S. ramosissima is in certain degree supported by the tolerance of its carbon assimilation enzyme (RuBisCO) and with the high functionality and integrity of the PSII reaction center under Cd excess.
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Affiliation(s)
- Jesús Alberto Pérez-Romero
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain.
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20
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Fourati E, Wali M, Vogel-Mikuš K, Abdelly C, Ghnaya T. Nickel tolerance, accumulation and subcellular distribution in the halophytes Sesuvium portulacastrum and Cakile maritima. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2016; 108:295-303. [PMID: 27479784 DOI: 10.1016/j.plaphy.2016.07.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 07/25/2016] [Accepted: 07/26/2016] [Indexed: 05/23/2023]
Abstract
It has been shown that halophytes are able to successfully cope with heavy metal toxicity, suggesting their possible use for remediation of metal contaminated soils. In this work, Ni tolerance and accumulation in two halophytes, Sesuvium portulacastrum (L.) L. and Cakile maritima Scop. was investigated. Seedlings of both species were subjected hydroponically during 21 days to 0, 25, 50, and 100 μM of NiCl2. The growth and photosynthesis parameters revealed that S. portulacastrum tolerates Ni better than C. maritima. The photosynthesis activity, chlorophyll content and photosystem II integrity were less impacted in Ni-treated S. portulacastrum as compared to C. maritima, although, Ni accumulated in higher concentrations in the shoots of S. portulacastrum (1050 μg g-1 DW) than in those of C. maritima (550 μg g-1 DW). The subcellular fractionation of Ni in the shoots of both species showed that C. maritima accumulated about 65% of Ni in the soluble fraction, while 28% was associated with the cell walls. In S. portulacastrum 44% of the total cellular Ni was seen in the soluble fraction and 43% was bound to the cell walls. It can be concluded that S. portulacastrum tolerates Ni better than C. maritima, most probably due to a better ability to sequester Ni in the cell walls, restricting its accumulation in the soluble fraction.
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Affiliation(s)
- Emna Fourati
- Université de Tunis El Manar, BP 901, 2050 Hammam-Lif, Tunisia; Centre de Biotechnologie de Borj Cedria (LR15CBBC02), Laboratoire des Plantes Extrèmophiles, BP 901, 2050 Hammam-Lif, Tunisia; Department of Biology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia
| | - Mariem Wali
- Université de Tunis El Manar, BP 901, 2050 Hammam-Lif, Tunisia; Centre de Biotechnologie de Borj Cedria (LR15CBBC02), Laboratoire des Plantes Extrèmophiles, BP 901, 2050 Hammam-Lif, Tunisia
| | - Katarina Vogel-Mikuš
- Department of Biology, Biotechnical Faculty, University of Ljubljana, Jamnikarjeva 101, SI-1000 Ljubljana, Slovenia; Jozef Stefan Institute, Jamova 39, Ljubljana, Slovenia
| | - Chedly Abdelly
- Centre de Biotechnologie de Borj Cedria (LR15CBBC02), Laboratoire des Plantes Extrèmophiles, BP 901, 2050 Hammam-Lif, Tunisia
| | - Tahar Ghnaya
- Centre de Biotechnologie de Borj Cedria (LR15CBBC02), Laboratoire des Plantes Extrèmophiles, BP 901, 2050 Hammam-Lif, Tunisia.
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21
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Begović L, Mlinarić S, Antunović Dunić J, Katanić Z, Lončarić Z, Lepeduš H, Cesar V. Response of Lemna minor L. to short-term cobalt exposure: The effect on photosynthetic electron transport chain and induction of oxidative damage. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2016; 175:117-26. [PMID: 27015565 DOI: 10.1016/j.aquatox.2016.03.009] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Revised: 03/03/2016] [Accepted: 03/08/2016] [Indexed: 05/06/2023]
Abstract
The effect of two concentrations of cobalt (Co(2+)) on photosynthetic activity and antioxidative response in Lemna minor L. were assessed 24, 48 and 72h after the start of the exposure. Higher concentration of cobalt (1mM) induced growth inhibition while lower concentration (0.01mM) increased photosynthetic pigments content. Analysis of chlorophyll a fluorescence transients revealed high sensitivity of photosystem II primary photochemistry to excess of Co(2+) especially at the higher concentration where decreased electron transport beyond primary quinone acceptor QA(-) and impaired function of oxygen evolving complex (OEC) was observed. Due to impairment of OEC, oxygen production was decreased at higher Co(2+) concentration. Activity of superoxide dismutase was mainly inhibited while lipid peroxidation increased, at both concentrations, indicating that cobalt-induced oxidative damage after short exposure and moreover, susceptibility of the membranes in the cell to cobalt toxicity. Results obtained in this study suggest possible application of used parameters as tools in assessment of early damage caused by metals.
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Affiliation(s)
- Lidija Begović
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia.
| | - Selma Mlinarić
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia.
| | - Jasenka Antunović Dunić
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia.
| | - Zorana Katanić
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia.
| | - Zdenko Lončarić
- Faculty of Agriculture, Josip Juraj Strossmayer University of Osijek, Ulica kralja Petra Svačića 1d, HR-31000 Osijek, Croatia.
| | - Hrvoje Lepeduš
- Faculty of Humanities and Social Sciences, Josip Juraj Strossmayer University of Osijek, Lorenza Jägera 9, HR-31000 Osijek, Croatia.
| | - Vera Cesar
- Josip Juraj Strossmayer University of Osijek, Department of Biology, Ulica cara Hadrijana 8/A, HR-31000 Osijek, Croatia.
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22
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Roccotiello E, Serrano HC, Mariotti MG, Branquinho C. The impact of Ni on the physiology of a Mediterranean Ni-hyperaccumulating plant. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:12414-22. [PMID: 26983814 DOI: 10.1007/s11356-016-6461-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 03/09/2016] [Indexed: 05/11/2023]
Abstract
High nickel (Ni) levels exert toxic effects on plant growth and plant water content, thus affecting photosynthesis. In a pot experiment, we investigated the effect of the Ni concentration on the physiological characteristics of the Ni hyperaccumulator Alyssoides utriculata when grown on a vermiculite substrate in the presence of different external Ni concentrations (0-500 mg Ni L(-1)). The results showed that the Ni concentration was higher in leaves than in roots, as evidenced by a translocation factor = 3 and a bioconcentration factor = 10. At the highest concentration tested (500 mg Ni L(-1)), A. utriculata accumulated 1100 mg Ni per kilogram in its leaves, without an effects on its biomass. Plant water content increased significantly with Ni accumulation. Ni treatment did not, or only slightly, affected chlorophyll fluorescence parameters. The photosynthetic efficiency (FV/FM) of A. utriculata was stable between Ni treatments (always ≥ 0.8) and the photosynthetic performance of the plant under Ni stress remained high (performance index = 1.5). These findings support that A. utriculata has several mechanisms to avoid severe damage to its photosynthetic apparatus, confirming the tolerance of this species to Ni under hyperaccumulation.
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Affiliation(s)
- Enrica Roccotiello
- DISTAV Dipartimento di Scienze della Terra, dell'Ambiente e della Vita, Laboratorio di Biologia Vegetale, Università degli Studi di Genova, Viale Benedetto XV, 5, I 16132, Genoa, Italy.
| | - Helena Cristina Serrano
- Centro de Ecologia, Evolução e Alterações Ambientais (cE3c) Faculdade de Ciências, Universidade de Lisboa, Campo Grande, C2 Piso 5, 1749-016, Lisbon, Portugal
| | - Mauro Giorgio Mariotti
- DISTAV Dipartimento di Scienze della Terra, dell'Ambiente e della Vita, Laboratorio di Biologia Vegetale, Università degli Studi di Genova, Viale Benedetto XV, 5, I 16132, Genoa, Italy
| | - Cristina Branquinho
- Centro de Ecologia, Evolução e Alterações Ambientais (cE3c) Faculdade de Ciências, Universidade de Lisboa, Campo Grande, C2 Piso 5, 1749-016, Lisbon, Portugal
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23
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Bernardini A, Salvatori E, Guerrini V, Fusaro L, Canepari S, Manes F. Effects of high Zn and Pb concentrations on Phragmites australis (Cav.) Trin. Ex. Steudel: Photosynthetic performance and metal accumulation capacity under controlled conditions. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2016; 18:16-24. [PMID: 26114607 DOI: 10.1080/15226514.2015.1058327] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The response of Phragmites australis (Cav.) Trin. Ex. Steudel to zinc (Zn) and lead (Pb) was studied separately in two hydroponic tests, during a three weeks experiment. The effects on ecophysiology and biomass partitioning were evaluated during the metal treatments and at the recovery, and total metal content and accumulation capacity in different plant organs were assessed. Zn and Pb had different effects on the overall measured parameters, highlighting different mechanism of action. In particular, Zn concentration was higher in roots and, being a micronutrient, it was translocated into leaves, producing a reduction of assimilation rate, stomatal conductance (-71.9 and -81.3% respect to the control plant respectively), and a strong down regulation of photosystems functionality both at PSII and PSI level. Otherwise, Pb was accumulated mainly in the more lignified tissue such as rhizomes, with slightly effect on gas exchange. Chlorophyll a fluorescence highlighted that Pb inhibits the electron transfer process at the PSI donor side, without recovery after the removal of the metal stress. Despite these physiological limitations, P. australis showed a high capacity to accumulate both metals, and only slight reduction of biomass, being therefore a suitable species for phytoremediation interventions.
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Affiliation(s)
- A Bernardini
- a Department of Environmental Biology , Sapienza University of Rome , Rome , Italy
| | - E Salvatori
- a Department of Environmental Biology , Sapienza University of Rome , Rome , Italy
| | - V Guerrini
- a Department of Environmental Biology , Sapienza University of Rome , Rome , Italy
| | - L Fusaro
- a Department of Environmental Biology , Sapienza University of Rome , Rome , Italy
| | - S Canepari
- b Department of Chemistry , Sapienza University of Rome , Rome , Italy
| | - F Manes
- a Department of Environmental Biology , Sapienza University of Rome , Rome , Italy
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24
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de Macedo FG, Bresolin JD, Santos EF, Furlan F, Lopes da Silva WT, Polacco JC, Lavres J. Nickel Availability in Soil as Influenced by Liming and Its Role in Soybean Nitrogen Metabolism. FRONTIERS IN PLANT SCIENCE 2016; 7:1358. [PMID: 27660633 PMCID: PMC5014873 DOI: 10.3389/fpls.2016.01358] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 08/26/2016] [Indexed: 05/05/2023]
Abstract
Nickel (Ni) availability in soil varies as a function of pH. Plants require Ni in small quantities for normal development, especially in legumes due its role in nitrogen (N) metabolism. This study investigated the effect of soil base saturation, and Ni amendments on Ni uptake, N accumulation in the leaves and grains, as well as to evaluate organic acids changes in soybean. In addition, two N assimilation enzymes were assayed: nitrate reductase (NR) and Ni-dependent urease. Soybean plants inoculated with Bradyrhizobium japonicum were cultivated in soil-filled pots under two base-cation saturation (BCS) ratios (50 and 70%) and five Ni rates - 0.0; 0.1; 0.5; 1.0; and 10.0 mg dm(-3) Ni. At flowering (R1 developmental stage), plants for each condition were evaluated for organic acids (oxalic, malonic, succinic, malic, tartaric, fumaric, oxaloacetic, citric and lactic) levels as well as the activities of urease and NR. At the end of the growth period (R7 developmental stage - grain maturity), grain N and Ni accumulations were determined. The available soil-Ni in rhizosphere extracted by DTPA increased with Ni rates, notably in BCS50. The highest concentrations of organic acid and N occurred in BCS70 and 0.5 mg dm(-3) of Ni. There were no significant differences for urease activity taken on plants grown at BSC50 for Ni rates, except for the control treatment, while plants cultivated at soil BCS70 increased the urease activity up to 0.5 mg dm(-3) of Ni. In addition, the highest values for urease activities were reached from the 0.5 mg dm(-3) of Ni rate for both BCS treatments. The NR activity was not affected by any treatment indicating good biological nitrogen fixation (BNF) for all plants. The reddish color of the nodules increased with Ni rates in both BCS50 and 70, also confirms the good BNF due to Ni availability. The optimal development of soybean occurs in BCS70, but requires an extra Ni supply for the production of organic acids and for increased N-shoot and grain accumulation.
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Affiliation(s)
- Fernando G. de Macedo
- Center for Nuclear Energy in Agriculture, University of Sao PauloPiracicaba, Brazil
- *Correspondence: Fernando G. de Macedo, José Lavres,
| | | | - Elcio F. Santos
- Center for Nuclear Energy in Agriculture, University of Sao PauloPiracicaba, Brazil
| | - Felipe Furlan
- Center for Nuclear Energy in Agriculture, University of Sao PauloPiracicaba, Brazil
| | | | | | - José Lavres
- Center for Nuclear Energy in Agriculture, University of Sao PauloPiracicaba, Brazil
- *Correspondence: Fernando G. de Macedo, José Lavres,
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25
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Khan A, Khan S, Khan MA, Qamar Z, Waqas M. The uptake and bioaccumulation of heavy metals by food plants, their effects on plants nutrients, and associated health risk: a review. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:13772-99. [PMID: 26194234 DOI: 10.1007/s11356-015-4881-0] [Citation(s) in RCA: 324] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 06/11/2015] [Indexed: 05/23/2023]
Abstract
Heavy metal contamination is a globally recognized environmental issue, threatening human life very seriously. Increasing population and high demand for food resulted in release of various contaminants into environment that finally contaminate the food chain. Edible plants are the major source of diet, and their contamination with toxic metals may result in catastrophic health hazards. Heavy metals affect the human health directly and/or indirectly; one of the indirect effects is the change in plant nutritional values. Previously, a number of review papers have been published on different aspects of heavy metal contamination. However, no related information is available about the effects of heavy metals on the nutritional status of food plants. This review paper is focused upon heavy metal sources, accumulation, transfer, health risk, and effects on protein, amino acids, carbohydrates, fats, and vitamins in plants. The literature about heavy metals in food plants shows that both leafy and nonleafy vegetables are good accumulators of heavy metals. In nonleafy vegetables, the bioaccumulation pattern was leaf > root ≈ stem > tuber. Heavy metals have strong influence on nutritional values; therefore, plants grown on metal-contaminated soil were nutrient deficient and consumption of such vegetables may lead to nutritional deficiency in the population particularly living in developing countries which are already facing the malnutrition problems.
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Affiliation(s)
- Anwarzeb Khan
- Department of Environmental Sciences, University of Peshawar, Peshawar, 25120, Pakistan
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26
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Loreto F, Fineschi S. Reconciling functions and evolution of isoprene emission in higher plants. THE NEW PHYTOLOGIST 2015; 206:578-82. [PMID: 25557381 DOI: 10.1111/nph.13242] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Accepted: 11/13/2014] [Indexed: 05/09/2023]
Abstract
Compilation and analysis of existing inventories reveal that isoprene is emitted by c. 20% of the perennial vegetation of tropical and temperate regions of the world. Isoprene emitters are found across different plant families without any clear phylogenetic thread. However, by critically appraising information in inventories, several ecological patterns of isoprene emission can be highlighted, including absence of emission from C4 and annual plants, and widespread emission from perennial and deciduous plants of temperate environments. Based on this analysis, and on available information on biochemistry, ecology and functional roles of isoprene, it is suggested that isoprene may not have evolved to help plants face heavy or prolonged stresses, but rather assists C3 plants to run efficient photosynthesis and to overcome transient and mild stresses, especially during periods of active plant growth in warm seasons. When the stress status persists, or when evergreen leaves cope with multiple and repeated stresses, isoprene biosynthesis is replaced by the synthesis of less volatile secondary compounds, in part produced by the same biochemical pathway, thus indicating causal determinism in the evolution of isoprene-emitting plants in response to the environment.
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Affiliation(s)
- Francesco Loreto
- Department of Biology, Agriculture and Food Sciences, The National Research Council of Italy (CNR), P. le Aldo Moro 7, Roma, 00185, Italy
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27
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Bazihizina N, Redwan M, Taiti C, Giordano C, Monetti E, Masi E, Azzarello E, Mancuso S. Root based responses account for Psidium guajava survival at high nickel concentration. JOURNAL OF PLANT PHYSIOLOGY 2015; 174:137-146. [PMID: 25462976 DOI: 10.1016/j.jplph.2014.10.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2014] [Revised: 10/27/2014] [Accepted: 10/28/2014] [Indexed: 06/04/2023]
Abstract
The presence of Psidium guajava in polluted environments has been reported in recent studies, suggesting that this species has a high tolerance to the metal stress. The present study aims at a physiological characterization of P. guajava response to high nickel (Ni) concentrations in the root-zone. Three hydroponic experiments were carried out to characterize the effects of toxic Ni concentrations on morphological and physiological parameters of P. guajava, focusing on Ni-induced damages at the root-level and root ion fluxes. With up to 300μM NiSO4 in the root-zone, plant growth was similar to that in control plants, whereas at concentrations higher than 1000μM NiSO4 there was a progressive decline in plant growth and leaf gas exchange parameters; this occurred despite, at all considered concentrations, plants limited Ni(2+) translocation to the shoot, therefore avoiding shoot Ni(2+) toxicity symptoms. Maintenance of plant growth with 300μM Ni(2+) was associated with the ability to retain K(+) in the roots meanwhile 1000 and 3000μM NiSO4 led to substantial K(+) losses. In this study, root responses mirror all plant performances suggesting a direct link between root functionality and Ni(2+) tolerance mechanisms and plant survival. Considering that Ni was mainly accumulated in the root system, the potential use of P. guajava for Ni(2+) phytoextraction in metal-polluted soils is limited; nevertheless, the observed physiological changes indicate a good Ni(2+) tolerance up to 300μM NiSO4 suggesting a potential role for the phytostabilization of polluted soils.
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Affiliation(s)
- Nadia Bazihizina
- LINV - Department of Agrifood Production and Environmental Sciences - University of Florence, Viale delle Idee 30, 50019 Sesto F.no, Florence, Italy
| | - Mirvat Redwan
- LINV - Department of Agrifood Production and Environmental Sciences - University of Florence, Viale delle Idee 30, 50019 Sesto F.no, Florence, Italy
| | - Cosimo Taiti
- LINV - Department of Agrifood Production and Environmental Sciences - University of Florence, Viale delle Idee 30, 50019 Sesto F.no, Florence, Italy
| | - Cristiana Giordano
- Centro di Microscopie Elettroniche "Laura Bonzi" (Ce.M.E.), ICCOM, CNR, Via Madonna del Piano, 50019 Sesto F.no, Florence, Italy
| | - Emanuela Monetti
- LINV - Department of Agrifood Production and Environmental Sciences - University of Florence, Viale delle Idee 30, 50019 Sesto F.no, Florence, Italy
| | - Elisa Masi
- LINV - Department of Agrifood Production and Environmental Sciences - University of Florence, Viale delle Idee 30, 50019 Sesto F.no, Florence, Italy
| | - Elisa Azzarello
- LINV - Department of Agrifood Production and Environmental Sciences - University of Florence, Viale delle Idee 30, 50019 Sesto F.no, Florence, Italy.
| | - Stefano Mancuso
- LINV - Department of Agrifood Production and Environmental Sciences - University of Florence, Viale delle Idee 30, 50019 Sesto F.no, Florence, Italy
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28
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Elloumi N, Zouari M, Chaari L, Jomni C, Marzouk B, Ben Abdallah F. Effects of cadmium on lipids of almond seedlings (Prunus dulcis). BOTANICAL STUDIES 2014; 55:61. [PMID: 28510983 PMCID: PMC5430368 DOI: 10.1186/s40529-014-0061-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Accepted: 02/11/2014] [Indexed: 05/27/2023]
Abstract
BACKGROUND Cadmium uptake and distribution, as well as its effects on lipid composition was investigated in almond seedlings (Prunus dulcis) grown in culture solution supplied with two concentrations of Cd (50 and 150 μM). RESULTS The accumulation of Cd increased with external metal concentrations, and was considerably higher in roots than in leaves. Fourteen days after Cd treatment, the membrane lipids were extracted and separated on silica-gel thin layer chromatography (TLC). Fatty acid methyl esters were analyzed by FID-GC on a capillary column. Our results showed that Cd stress decreased the quantities of all lipids classes (phospholipids, galactolipids and neutral lipids). Galactolipid, phospholipid and neutral lipid concentrations decreased more in roots than in leaves by Cd-treatment. In almost all lipid classes the proportion of palmitic acid (16:0), linoleic (18: 2) and that of linolenic (18: 3) acid decreased, suggesting that heavy metal treatment induced an alteration in the fatty acid synthesis processes. CONCLUSIONS In conclusion, our results show that the changes found in total fatty acids, in the quantities of all lipids classes, and in the in the profiles of individual polar lipids suggest that membrane structure and function might be altered by Cd stress.
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Affiliation(s)
- Nada Elloumi
- Laboratory of Water, Energy and Environment, Sfax University, Higher Institute of Biotechnology of Sfax, Sfax, Tunisia
| | - Mohamed Zouari
- Laboratory of Environment and Biology of Arid Area, Department of Life Sciences, Faculty of Sciences of Sfax, Sfax, Tunisia
| | - Leila Chaari
- Laboratory of Water, Energy and Environment, Sfax University, ENIS, Sfax, Sfax Tunisia
| | - Chiraz Jomni
- Laboratory of Environment and Biology of Arid Area, Department of Life Sciences, Faculty of Sciences of Sfax, Sfax, Tunisia
| | - Brahim Marzouk
- Laboratory of Substances Bioactives, Centre de Biotechnologie de Borj Cedria (CBBC), Hammam-Lif, 1050 Tunisia
| | - Ferjani Ben Abdallah
- Laboratory of Environment and Biology of Arid Area, Department of Life Sciences, Faculty of Sciences of Sfax, Sfax, Tunisia
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29
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Zhang X, Gao B, Xia H. Effect of cadmium on growth, photosynthesis, mineral nutrition and metal accumulation of bana grass and vetiver grass. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2014. [PMID: 24836884 DOI: 10.1016/j.biombioe.2014.04.030] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
An experiment was conducted to evaluate the differential effects of Cd contamination on the growth, photosynthesis, mineral nutrition and Cd accumulation of bana grass (Pennisetum americanum × Pennisetum purpureum) and vetiver grass (Vetiveria zizanioides). Bana grass accumulated 48-453 and 25-208 mg kg(-1) in plant roots and shoots, respectively, at 15-100 mg kg(-1) soil Cd concentration, while vetiver grass accumulated 167-396 and 0.13-9.0 mg kg(-1). These results indicated that bana grass was a Cd accumulator while vetiver grass was a Cd excluder. The ratio of root to shoot biomass was significantly increased in vetiver grass, while it was unchanged in bana grass by Cd pollution. This suggests that excluders may allocate more energy to roots than shoots under Cd pollution compared to un-contaminated condition, while accumulators may allocate equal proportions of energy to roots and shoots. For bana grass, soil Cd pollution significantly decreased the concentration of Fe and Mn in roots as well as the translocation factors of Zn and K. For vetiver grass, soil Cd pollution significantly decreased the concentration of Fe in roots and had no influence on the translocation factors of Fe, Mn, Cu, Zn, Mg, K and Ca. Soil Cd pollution showed no significant effect on chlorophyll content and photosynthetic rates in either of the grasses. The water content and leaf transpiration rate were significantly increased by Cd pollution in bana grass, while they were unchanged in vetiver grass. The results indicated that the energy allocation and mineral nutrition characteristics may aid in screening suitable plant species for phytoremediation.
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Affiliation(s)
- Xingfeng Zhang
- Institute of Ecology, South China Botanical Garden, The Chinese Academy of Sciences, Guangzhou 510650, PR China; College of Environmental Science and Technology, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, PR China
| | - Bo Gao
- College of Environmental Science and Technology, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, PR China
| | - Hanping Xia
- Institute of Ecology, South China Botanical Garden, The Chinese Academy of Sciences, Guangzhou 510650, PR China.
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30
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Grote R, Morfopoulos C, Niinemets Ü, Sun Z, Keenan T, Pacifico F, Butler T. A fully integrated isoprenoid emissions model coupling emissions to photosynthetic characteristics. PLANT, CELL & ENVIRONMENT 2014; 37:1965-80. [PMID: 24661098 PMCID: PMC4415481 DOI: 10.1111/pce.12326] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Accepted: 03/14/2014] [Indexed: 05/20/2023]
Abstract
The lack of a mechanistic basis has hampered modelling isoprene emission responses to environmental drivers, in particular the simulation of isoprene emissions under different CO₂ concentrations. Here, we advance previous semi-mechanistic model formulations by introducing a model that explicitly links electron availability for other purpose than carbon assimilation (or available energy for secondary metabolism processes; supply-constraint) and enzyme activity (capacity-constraint) to emissions. We furthermore investigate the sensitivity of the model to variations in photosynthetic and emission-specific parameters. By comparing species-specific simulations with experimental data, we demonstrate that differences in photosynthetic characteristics can explain inter-species differences in emissions. Interestingly, the seasonal development of emissions could also be explained to some degree by the change in energy supply from photosynthesis throughout the season. In addition, we show that the principal responses are not limited to isoprene but can be formulated to describe the emission of other light-dependent volatile species. The proposed model is suitable for implementation into regional and global models, particularly those that already provide species-specific photosynthesis estimates.
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Affiliation(s)
- Rüdiger Grote
- Institute for Advanced Sustainability Studies (IASS), Berliner Str. 130, 14467 Potsdam, Germany
- Karlsruhe Institute for Technology, Institute for Meteorology and Climate Research (IMK-IFU), Kreuzeckbahnstraße 19, 82467 Garmisch-Partenkirchen, Germany
| | | | - Ülo Niinemets
- Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 1, Tartu 51014, Estonia
| | - Zhihong Sun
- Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 1, Tartu 51014, Estonia
| | - Trevor Keenan
- Department of Biological Sciences, E8C Building Room 270, Macquarie University, Sydney, Australia
| | - Federica Pacifico
- University of Exeter College of Engineering, Mathematics and Physical Sciences Harrison, Building, North Park Road Exeter, EX4 4QF, UK
| | - Tim Butler
- Institute for Advanced Sustainability Studies (IASS), Berliner Str. 130, 14467 Potsdam, Germany
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31
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Zhang X, Gao B, Xia H. Effect of cadmium on growth, photosynthesis, mineral nutrition and metal accumulation of bana grass and vetiver grass. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2014; 106:102-108. [PMID: 24836884 DOI: 10.1016/j.ecoenv.2014.04.025] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Revised: 04/12/2014] [Accepted: 04/20/2014] [Indexed: 06/03/2023]
Abstract
An experiment was conducted to evaluate the differential effects of Cd contamination on the growth, photosynthesis, mineral nutrition and Cd accumulation of bana grass (Pennisetum americanum × Pennisetum purpureum) and vetiver grass (Vetiveria zizanioides). Bana grass accumulated 48-453 and 25-208 mg kg(-1) in plant roots and shoots, respectively, at 15-100 mg kg(-1) soil Cd concentration, while vetiver grass accumulated 167-396 and 0.13-9.0 mg kg(-1). These results indicated that bana grass was a Cd accumulator while vetiver grass was a Cd excluder. The ratio of root to shoot biomass was significantly increased in vetiver grass, while it was unchanged in bana grass by Cd pollution. This suggests that excluders may allocate more energy to roots than shoots under Cd pollution compared to un-contaminated condition, while accumulators may allocate equal proportions of energy to roots and shoots. For bana grass, soil Cd pollution significantly decreased the concentration of Fe and Mn in roots as well as the translocation factors of Zn and K. For vetiver grass, soil Cd pollution significantly decreased the concentration of Fe in roots and had no influence on the translocation factors of Fe, Mn, Cu, Zn, Mg, K and Ca. Soil Cd pollution showed no significant effect on chlorophyll content and photosynthetic rates in either of the grasses. The water content and leaf transpiration rate were significantly increased by Cd pollution in bana grass, while they were unchanged in vetiver grass. The results indicated that the energy allocation and mineral nutrition characteristics may aid in screening suitable plant species for phytoremediation.
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Affiliation(s)
- Xingfeng Zhang
- Institute of Ecology, South China Botanical Garden, The Chinese Academy of Sciences, Guangzhou 510650, PR China; College of Environmental Science and Technology, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, PR China
| | - Bo Gao
- College of Environmental Science and Technology, Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, PR China
| | - Hanping Xia
- Institute of Ecology, South China Botanical Garden, The Chinese Academy of Sciences, Guangzhou 510650, PR China.
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32
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Romeo S, Trupiano D, Ariani A, Renzone G, Scippa GS, Scaloni A, Sebastiani L. Proteomic analysis of Populus × euramericana (clone I-214) roots to identify key factors involved in zinc stress response. JOURNAL OF PLANT PHYSIOLOGY 2014; 171:1054-63. [PMID: 24974332 DOI: 10.1016/j.jplph.2014.03.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Revised: 03/20/2014] [Accepted: 03/23/2014] [Indexed: 05/12/2023]
Abstract
Contamination of soil and water by heavy metals has become a widespread problem; environmental pollution by high zinc (Zn) concentration occurs frequently. Although poplar (Populus spp.) has been identified as suitable for phytoremediation approaches, its response to high Zn concentrations are still not clearly understood. For this reason, we investigated the effects of Zn in Populus×euramericana clone I-214 roots by proteomic analysis. Comparative experiments were conducted on rooted woody cuttings grown in nutrient solutions containing 1mM (treatment) or 1μM (control) Zn concentrations. A gel-based proteomic approach coupled with morphological and chemical analysis was used to identify differentially represented proteins in treated roots and to investigate the effect of Zn treatment on the poplar root system. Data shows that Zn was accumulated preferentially in roots, that the antioxidant system, the carbohydrate/energy and amino acid metabolisms were the main pathways modulated by Zn excess, and that mitochondria and vacuoles were the cellular organelles predominately affected by Zn stress. A coordination between cell death and proliferation/growth seems to occur under this condition to counteract the Zn-induced damage.
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Affiliation(s)
- Stefania Romeo
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant'Anna, 56127 Pisa, Italy
| | - Dalila Trupiano
- Dipartimento di Bioscienze e Territorio, University of Molise, 86090 Pesche, IS, Italy
| | - Andrea Ariani
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant'Anna, 56127 Pisa, Italy
| | - Giovanni Renzone
- Proteomics and Mass Spectrometry Laboratory, ISPAAM, National Research Council, 80147 Napoli, Italy
| | - Gabriella S Scippa
- Dipartimento di Bioscienze e Territorio, University of Molise, 86090 Pesche, IS, Italy
| | - Andrea Scaloni
- Proteomics and Mass Spectrometry Laboratory, ISPAAM, National Research Council, 80147 Napoli, Italy
| | - Luca Sebastiani
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant'Anna, 56127 Pisa, Italy.
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Ma Y, Rajkumar M, Rocha I, Oliveira RS, Freitas H. Serpentine bacteria influence metal translocation and bioconcentration of Brassica juncea and Ricinus communis grown in multi-metal polluted soils. FRONTIERS IN PLANT SCIENCE 2014; 5:757. [PMID: 25601876 PMCID: PMC4283507 DOI: 10.3389/fpls.2014.00757] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 12/09/2014] [Indexed: 05/20/2023]
Abstract
The aim of this study was to assess the effects of inoculation of rhizosphere or endophytic bacteria (Psychrobacter sp. SRS8 and Pseudomonas sp. A3R3, respectively) isolated from a serpentine environment on the plant growth and the translocation and accumulation of Ni, Zn, and Fe by Brassica juncea and Ricinus communis on a multi-metal polluted serpentine soil (SS). Field collected SS was diluted to 0, 25, 50, and 75% with pristine soil in order to obtain a range of heavy metal concentrations and used in microcosm experiments. Regardless of inoculation with bacteria, the biomass of both plant species decreased with increase of the proportion of SS. Inoculation of plants with bacteria significantly increased the plant biomass and the heavy metal accumulation compared with non-inoculated control in the presence of different proportion of SS, which was attributed to the production of plant growth promoting and/or metal mobilizing metabolites by bacteria. However, SRS8 showed a maximum increase in the biomass of the test plants grown even in the treatment of 75% SS. In turn, A3R3 showed maximum effects on the accumulation of heavy metals in both plants. Regardless of inoculation of bacteria and proportion of SS, both plant species exhibited low values of bioconcentration factor (<1) for Ni and Fe. The inoculation of both bacterial strains significantly increased the translocation factor (TF) of Ni while decreasing the TF of Zn in both plant species. Besides this contrasting effect, the TFs of all metals were <1, indicating that all studied bacteria-plant combinations are suitable for phytostabilization. This study demonstrates that the bacterial isolates A3R3 and SRS8 improved the growth of B. juncea and R. communis in SS soils and have a great potential to be used as inoculants in phytostabilization scenarios of multi-metal contaminated soils.
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Affiliation(s)
- Ying Ma
- Centre for Functional Ecology, Department of Life Sciences, University of CoimbraCoimbra, Portugal
- *Correspondence: Ying Ma, Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal e-mail:
| | - Mani Rajkumar
- Department of Life Sciences, Central University of Tamil NaduThiruvarur, India
| | - Inês Rocha
- Centre for Functional Ecology, Department of Life Sciences, University of CoimbraCoimbra, Portugal
| | - Rui S. Oliveira
- Centre for Functional Ecology, Department of Life Sciences, University of CoimbraCoimbra, Portugal
- Centro de Biotecnologia e Química Fina – Laboratório Associado, Escola Superior de Biotecnologia, Universidade Católica PortuguesaPorto, Portugal
- Research Centre on Health and Environment, School of Allied Health Sciences, Polytechnic Institute of PortoVila Nova de Gaia, Portugal
| | - Helena Freitas
- Centre for Functional Ecology, Department of Life Sciences, University of CoimbraCoimbra, Portugal
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Gajewska E, Niewiadomska E, Tokarz K, Słaba M, Skłodowska M. Nickel-induced changes in carbon metabolism in wheat shoots. JOURNAL OF PLANT PHYSIOLOGY 2013; 170:369-377. [PMID: 23374731 DOI: 10.1016/j.jplph.2012.10.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2012] [Revised: 10/30/2012] [Accepted: 10/30/2012] [Indexed: 06/01/2023]
Abstract
In this study, we analyzed the toxic effect of Ni during the development of wheat shoots. Typical developmental alterations in carbon metabolism-related parameters reflecting changes associated with the transition of the seedlings from heterotrophic to autotrophic metabolism were observed in the control shoots between the 1st and the 4th days. Adverse effects of 50 and 100 μM Ni became evident starting from the 4th day of growth on the metal-containing media. We found that Ni-induced stimulation of phosphoenolpyruvate carboxylase (PEPC) activity coincided with decrease in the ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) level and with declines in net photosynthetic rate (P(N)) and stomatal conductance (g(s)). Application of Ni resulted in increased activities of several dehydrogenases: glucose-6-phosphate dehydrogenase (G6PDH), 6-phosphogluconate dehydrogenase (6PGDH), isocitrate dehydrogenase (NADP-ICDH) and malate dehydrogenase (NADH-MDH). In contrast, the activities of malic enzymes (NADP-ME and NAD-ME) decreased due to Ni stress. Treatment with Ni led to accumulation of glucose and declined concentration of sucrose as well as considerable increases in concentrations of malic and citric acids. Our results indicate that Ni stress redirects the carbon metabolism of developing wheat shoots to provide carbon skeletons for synthesis of amino acids and organic acids as well as to supply reducing power to sustain normal metabolic processes and to support defense mechanisms against oxidative stress.
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Affiliation(s)
- Ewa Gajewska
- Department of Plant Physiology and Biochemistry, University of Łódź, Banacha 12/16, 90-237 Łódź, Poland.
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Tognetti R, Cocozza C, Marchetti M. Shaping the multifunctional tree: the use of Salicaceae in environmental restoration. IFOREST - BIOGEOSCIENCES AND FORESTRY 2013. [PMID: 0 DOI: 10.3832/ifor0920-006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
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Flexas J, Barbour MM, Brendel O, Cabrera HM, Carriquí M, Díaz-Espejo A, Douthe C, Dreyer E, Ferrio JP, Gago J, Gallé A, Galmés J, Kodama N, Medrano H, Niinemets Ü, Peguero-Pina JJ, Pou A, Ribas-Carbó M, Tomás M, Tosens T, Warren CR. Mesophyll diffusion conductance to CO2: an unappreciated central player in photosynthesis. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2012; 193-194:70-84. [PMID: 22794920 DOI: 10.1016/j.plantsci.2012.05.009] [Citation(s) in RCA: 343] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2012] [Revised: 05/08/2012] [Accepted: 05/20/2012] [Indexed: 05/20/2023]
Abstract
Mesophyll diffusion conductance to CO(2) is a key photosynthetic trait that has been studied intensively in the past years. The intention of the present review is to update knowledge of g(m), and highlight the important unknown and controversial aspects that require future work. The photosynthetic limitation imposed by mesophyll conductance is large, and under certain conditions can be the most significant photosynthetic limitation. New evidence shows that anatomical traits, such as cell wall thickness and chloroplast distribution are amongst the stronger determinants of mesophyll conductance, although rapid variations in response to environmental changes might be regulated by other factors such as aquaporin conductance. Gaps in knowledge that should be research priorities for the near future include: how different is mesophyll conductance among phylogenetically distant groups and how has it evolved? Can mesophyll conductance be uncoupled from regulation of the water path? What are the main drivers of mesophyll conductance? The need for mechanistic and phenomenological models of mesophyll conductance and its incorporation in process-based photosynthesis models is also highlighted.
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Affiliation(s)
- Jaume Flexas
- Research Group in Plant Biology under Mediterranean Conditions, Universitat de les Illes Balears, Carretera de Valldemossa Km 7.5, 07122 Palma de Mallorca, Illes Balears, Spain.
| | - Margaret M Barbour
- Faculty of Agriculture, Food and Natural Resources, The University of Sydney, Private Bag 4011, Narellan, NSW 2567, Australia
| | - Oliver Brendel
- INRA, UMR 1137, Ecologie et Ecophysiologie Forestières, F-54280 Champenoux, France; Université de Lorraine, UMR 1137, Ecologie et Ecophysiologie Forestières, Faculté des Sciences, F-54500 Vandoeuvre, France
| | - Hernán M Cabrera
- Research Group in Plant Biology under Mediterranean Conditions, Universitat de les Illes Balears, Carretera de Valldemossa Km 7.5, 07122 Palma de Mallorca, Illes Balears, Spain; Centro de Ecología Aplicada Ltda., Av. Suecia 3304, Ñuñoa, Santiago, Chile
| | - Marc Carriquí
- Research Group in Plant Biology under Mediterranean Conditions, Universitat de les Illes Balears, Carretera de Valldemossa Km 7.5, 07122 Palma de Mallorca, Illes Balears, Spain
| | - Antonio Díaz-Espejo
- Instituto de Recursos Naturales y Agrobiología, IRNAS-CSIC, Apartado 1052, 41080 Sevilla, Spain
| | - Cyril Douthe
- INRA, UMR 1137, Ecologie et Ecophysiologie Forestières, F-54280 Champenoux, France; Université de Lorraine, UMR 1137, Ecologie et Ecophysiologie Forestières, Faculté des Sciences, F-54500 Vandoeuvre, France; School of Biological Sciences, The University of Sydney, Sydney, NSW 2006, Australia
| | - Erwin Dreyer
- INRA, UMR 1137, Ecologie et Ecophysiologie Forestières, F-54280 Champenoux, France; Université de Lorraine, UMR 1137, Ecologie et Ecophysiologie Forestières, Faculté des Sciences, F-54500 Vandoeuvre, France
| | - Juan P Ferrio
- Department of Crop and Forest Sciences, AGROTECNIO Center, Universitat de Lleida, Avda. Rovira Roure 191, 25198 Lleida, Spain
| | - Jorge Gago
- Research Group in Plant Biology under Mediterranean Conditions, Universitat de les Illes Balears, Carretera de Valldemossa Km 7.5, 07122 Palma de Mallorca, Illes Balears, Spain
| | - Alexander Gallé
- Research Group in Plant Biology under Mediterranean Conditions, Universitat de les Illes Balears, Carretera de Valldemossa Km 7.5, 07122 Palma de Mallorca, Illes Balears, Spain
| | - Jeroni Galmés
- Research Group in Plant Biology under Mediterranean Conditions, Universitat de les Illes Balears, Carretera de Valldemossa Km 7.5, 07122 Palma de Mallorca, Illes Balears, Spain
| | - Naomi Kodama
- Agro-Meteorology Division, National Institute for Agro-Environmental Sciences, 3-1-3 Kannondai, Tsukuba 305-8604, Japan
| | - Hipólito Medrano
- Research Group in Plant Biology under Mediterranean Conditions, Universitat de les Illes Balears, Carretera de Valldemossa Km 7.5, 07122 Palma de Mallorca, Illes Balears, Spain
| | - Ülo Niinemets
- Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 1, Tartu 51014, Estonia
| | - José J Peguero-Pina
- Research Group in Plant Biology under Mediterranean Conditions, Universitat de les Illes Balears, Carretera de Valldemossa Km 7.5, 07122 Palma de Mallorca, Illes Balears, Spain
| | - Alicia Pou
- Research Group in Plant Biology under Mediterranean Conditions, Universitat de les Illes Balears, Carretera de Valldemossa Km 7.5, 07122 Palma de Mallorca, Illes Balears, Spain
| | - Miquel Ribas-Carbó
- Research Group in Plant Biology under Mediterranean Conditions, Universitat de les Illes Balears, Carretera de Valldemossa Km 7.5, 07122 Palma de Mallorca, Illes Balears, Spain
| | - Magdalena Tomás
- Research Group in Plant Biology under Mediterranean Conditions, Universitat de les Illes Balears, Carretera de Valldemossa Km 7.5, 07122 Palma de Mallorca, Illes Balears, Spain
| | - Tiina Tosens
- Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Kreutzwaldi 1, Tartu 51014, Estonia
| | - Charles R Warren
- School of Biological Sciences, The University of Sydney, Sydney, NSW 2006, Australia
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Le Guédard M, Faure O, Bessoule JJ. Early changes in the fatty acid composition of photosynthetic membrane lipids from Populus nigra grown on a metallurgical landfill. CHEMOSPHERE 2012; 88:693-698. [PMID: 22531865 DOI: 10.1016/j.chemosphere.2012.03.079] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2011] [Revised: 03/26/2012] [Accepted: 03/29/2012] [Indexed: 05/31/2023]
Abstract
We compared the fatty acid composition of leaves taken from poplars on a metal-contaminated landfill, and on the uncontaminated roadside bordering this site. For the first time, it is shown that the percentage of linolenic acid, which is mainly associated with thylakoid lipids, was significantly lower in tree species within the landfill than within the control area. A correlation study was carried out to investigate relationships between the C18:3/(C18:0 + C18:1 + C18:2) fatty acid ratios and the metal contents in soils and leaves. Lead and chromium leaf contents were significantly negatively correlated to this fatty acid ratio. The impact of each of these metals remains difficult to evaluate, but chromium in leaf likely plays a major role in toxicity. In addition, the decrease in the C18:3/(C18:0 + C18:1 + C18:2) fatty acid ratio occurred at low leaf metal content, and therefore it is shown that this ratio can be used as an early indicator of the effect of metals.
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Affiliation(s)
- Marina Le Guédard
- CNRS, Laboratoire de Biogenèse Membranaire, UMR-5200, F-33076 Bordeaux Cedex, France.
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