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Alenazi MM, El-Ebidy AM, El-shehaby OA, Seleiman MF, Aldhuwaib KJ, Abdel-Aziz HMM. Chitosan and Chitosan Nanoparticles Differentially Alleviate Salinity Stress in Phaseolus vulgaris L. Plants. PLANTS (BASEL, SWITZERLAND) 2024; 13:398. [PMID: 38337931 PMCID: PMC10857083 DOI: 10.3390/plants13030398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/14/2023] [Accepted: 12/25/2023] [Indexed: 02/12/2024]
Abstract
Salinity stress can significantly cause negative impacts on the physiological and biochemical traits of plants and, consequently, a reduction in the yield productivity of crops. Therefore, the current study aimed to investigate the effects of chitosan (Cs) and chitosan nanoparticles (CsNPs) to mitigate salinity stress (i.e., 25, 50, 100, and 200 mM NaCl) and improve pigment fractions, carbohydrates content, ions content, proline, hydrogen peroxide, lipid peroxidation, electrolyte leakage content, and the antioxidant system of Phaseolus vulgaris L. grown in clay-sandy soil. Methacrylic acid was used to synthesize CsNPs, with an average size of 40 ± 2 nm. Salinity stress negatively affected yield traits, pigment fractions, and carbohydrate content. However, in plants grown under salt stress, the application of either Cs or CsNPs significantly improved yield, pigment fractions, carbohydrate content, proline, and the antioxidant system, while these treatments reduced hydrogen peroxide, lipid peroxidation, and electrolyte leakage. The positive effects of CsNPs were shown to be more beneficial than Cs when applied exogenously to plants grown under salt stress. In this context, it could be concluded that CsNPs could be used to mitigate salt stress effects on Phaseolus vulgaris L. plants grown in saline soils.
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Affiliation(s)
- Mekhled M. Alenazi
- Plant Production Department, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
| | - Aya M. El-Ebidy
- Botany Department, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
| | - Omar A. El-shehaby
- Botany Department, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
| | - Mahmoud F. Seleiman
- Plant Production Department, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia
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2
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Moshirian Farahi SM, Taghavizadeh Yazdi ME, Einafshar E, Akhondi M, Ebadi M, Azimipour S, Mahmoodzadeh H, Iranbakhsh A. The effects of titanium dioxide (TiO 2) nanoparticles on physiological, biochemical, and antioxidant properties of Vitex plant ( Vitex agnus - Castus L). Heliyon 2023; 9:e22144. [PMID: 38034643 PMCID: PMC10685375 DOI: 10.1016/j.heliyon.2023.e22144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 10/20/2023] [Accepted: 11/05/2023] [Indexed: 12/02/2023] Open
Abstract
Titanium dioxide nanoparticles (TiO2NPs) are widely used in agriculture in order to increase the yield and growth characteristics of plants. This study investigated the effects of TiO2NPs on photosynthetic pigments and several biochemical activities and antioxidant enzymes of the Vitex plant. Different concentrations of nanoparticles (0, 200, 400, 600 and 800 ppm) at five levels were sprayed on Vitex plants on the 30th day of the experiment. TiO2NPs at different concentrations had positive effects on root and shoot dry weight and a negative effect on leaf dry weight. The amount of chlorophyll increased with the concentration of TiO2NPs; however, the amount of chlorophyll b showed a decreasing trend while the total chlorophyll had a constant trend. The highest amount of soluble sugar was obtained in the treatment of 200 ppm nanoparticles. The application of TiO2NPs did not have any effect on the content of proline and soluble proteins of Vitex plant. The effects of foliar TiO2NPs, compared to the control, showed a significant increase in the activity of antioxidant enzymes. In general, TiO2NPs had a favorable effect on dry matter production and some antioxidant and biochemical properties of the Vitex plant.
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Affiliation(s)
| | | | - Elham Einafshar
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahdi Akhondi
- Department of Biology, Payame Noor University, Tehran, Iran
| | - Mostafa Ebadi
- Department of Biology, Damghan Branch, Islamic Azad University, Damghan, Iran
| | - Shahrouz Azimipour
- Faculty of Chemistry, Semnan Branch, Islamic Azad University, Semnan, Iran
| | - Homa Mahmoodzadeh
- Department of Biology, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - Alireza Iranbakhsh
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
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Sinha D, Datta S, Mishra R, Agarwal P, Kumari T, Adeyemi SB, Kumar Maurya A, Ganguly S, Atique U, Seal S, Kumari Gupta L, Chowdhury S, Chen JT. Negative Impacts of Arsenic on Plants and Mitigation Strategies. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12091815. [PMID: 37176873 PMCID: PMC10181087 DOI: 10.3390/plants12091815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 04/21/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023]
Abstract
Arsenic (As) is a metalloid prevalent mainly in soil and water. The presence of As above permissible levels becomes toxic and detrimental to living organisms, therefore, making it a significant global concern. Humans can absorb As through drinking polluted water and consuming As-contaminated food material grown in soil having As problems. Since human beings are mobile organisms, they can use clean uncontaminated water and food found through various channels or switch from an As-contaminated area to a clean area; but plants are sessile and obtain As along with essential minerals and water through roots that make them more susceptible to arsenic poisoning and consequent stress. Arsenic and phosphorus have many similarities in terms of their physical and chemical characteristics, and they commonly compete to cause physiological anomalies in biological systems that contribute to further stress. Initial indicators of arsenic's propensity to induce toxicity in plants are a decrease in yield and a loss in plant biomass. This is accompanied by considerable physiological alterations; including instant oxidative surge; followed by essential biomolecule oxidation. These variables ultimately result in cell permeability and an electrolyte imbalance. In addition, arsenic disturbs the nucleic acids, the transcription process, and the essential enzymes engaged with the plant system's primary metabolic pathways. To lessen As absorption by plants, a variety of mitigation strategies have been proposed which include agronomic practices, plant breeding, genetic manipulation, computer-aided modeling, biochemical techniques, and the altering of human approaches regarding consumption and pollution, and in these ways, increased awareness may be generated. These mitigation strategies will further help in ensuring good health, food security, and environmental sustainability. This article summarises the nature of the impact of arsenic on plants, the physio-biochemical mechanisms evolved to cope with As stress, and the mitigation measures that can be employed to eliminate the negative effects of As.
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Affiliation(s)
- Dwaipayan Sinha
- Department of Botany, Government General Degree College, Mohanpur 721436, Paschim Medinipur, West Bengal, India
| | - Soumi Datta
- Bioactive Natural Product Laboratory, School of Interdisciplinary Sciences and Technology, Jamia Hamdard, Hamdard Nagar, New Delhi 110062, India
| | - Reema Mishra
- Department of Botany, Gargi College, University of Delhi, New Delhi 110049, India
| | - Preeti Agarwal
- Department of Botany, Gargi College, University of Delhi, New Delhi 110049, India
| | - Tripti Kumari
- Department of Chemistry, Gargi College, University of Delhi, New Delhi 110049, India
| | - Sherif Babatunde Adeyemi
- Ethnobotany/Phytomedicine Laboratory, Department of Plant Biology, Faculty of Life Sciences, University of Ilorin, Ilorin PMB 1515, Kwara State, Nigeria
| | - Arun Kumar Maurya
- Department of Botany, Multanimal Modi College, Modinagar, Ghaziabad 201204, Uttar Pradesh, India
| | - Sharmistha Ganguly
- University Department of Botany, Ranchi University, Ranchi 834008, Jharkhand, India
| | - Usman Atique
- Department of Bioscience and Biotechnology, College of Biological Systems, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Sanchita Seal
- Department of Botany, Polba Mahavidyalaya, Polba 712148, West Bengal, India
| | - Laxmi Kumari Gupta
- Bioprocess Development Laboratory, Department of Biotechnology, National Institute of Technology Warangal, Warangal 506004, Telangana, India
| | - Shahana Chowdhury
- Department of Biotechnology, Faculty of Engineering Sciences, German University Bangladesh, TNT Road, Telipara, Chandona Chowrasta, Gazipur 1702, Bangladesh
| | - Jen-Tsung Chen
- Department of Life Sciences, National University of Kaohsiung, Kaohsiung 811, Taiwan
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Stepankova H, Michalkova H, Splichal Z, Richtera L, Svec P, Vaculovic T, Pribyl J, Kormunda M, Rex S, Adam V, Heger Z. Unveiling the nanotoxicological aspects of Se nanomaterials differing in size and morphology. Bioact Mater 2023; 20:489-500. [PMID: 35800405 PMCID: PMC9237951 DOI: 10.1016/j.bioactmat.2022.06.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 03/08/2022] [Accepted: 06/17/2022] [Indexed: 11/26/2022] Open
Abstract
Although the general concept of nanotechnology relies on exploitation of size-dependent properties of nanoscaled materials, the relation between the size/morphology of nanoparticles with their biological activity remains not well understood. Therefore, we aimed at investigating the biological activity of Se nanoparticles, one of the most promising candidates of nanomaterials for biomedicine, possessing the same crystal structure, but differing in morphology (nanorods vs. spherical particles) and aspect ratios (AR, 11.5 vs. 22.3 vs. 1.0) in human cells and BALB/c mice. Herein, we report that in case of nanorod-shaped Se nanomaterials, AR is a critical factor describing their cytotoxicity and biocompatibility. However, spherical nanoparticles (AR 1.0) do not fit this statement and exhibit markedly higher cytotoxicity than lower-AR Se nanorods. Beside of cytotoxicity, we also show that morphology and size substantially affect the uptake and intracellular fate of Se nanomaterials. In line with in vitro data, in vivo i.v. administration of Se nanomaterials revealed the highest toxicity for higher-AR nanorods followed by spherical nanoparticles and lower-AR nanorods. Moreover, we revealed that Se nanomaterials are able to alter intracellular redox homeostasis, and affect the acidic intracellular vesicles and cytoskeletal architecture in a size- and morphology-dependent manner. Although the tested nanoparticles were produced from the similar sources, their behavior differs markedly, since each type is promising for several various application scenarios, and the presented testing protocol could serve as a concept standardizing the biological relevance of the size and morphology of the various types of nanomaterials and nanoparticles.
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Affiliation(s)
- Hana Stepankova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
| | - Hana Michalkova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, Brno, CZ-612 00, Czech Republic
| | - Zbynek Splichal
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, Brno, CZ-612 00, Czech Republic
| | - Lukas Richtera
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, Brno, CZ-612 00, Czech Republic
| | - Pavel Svec
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, Brno, CZ-612 00, Czech Republic
| | - Tomas Vaculovic
- Department of Chemistry, Masaryk University, Kamenice 5, Brno, CZ-625 00, Czech Republic
- Institute of Laboratory Research on Geomaterials, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, 842 15 Bratislava, Slovak Republic
| | - Jan Pribyl
- Central European Institute of Technology, Masaryk University, Kamenice 5, Brno, CZ-625 00, Czech Republic
| | - Martin Kormunda
- Department of Physics, Faculty of Science, J. E. Purkyne University, Pasteurova 1, Usti nad Labem, CZ-400 96, Czech Republic
| | - Simona Rex
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, Brno, CZ-612 00, Czech Republic
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, Brno, CZ-612 00, Czech Republic
| | - Zbynek Heger
- Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, Brno, CZ-613 00, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Purkynova 123, Brno, CZ-612 00, Czech Republic
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Cunha MLO, Oliveira LCAD, Silva VM, Montanha GS, Reis ARD. Selenium increases photosynthetic capacity, daidzein biosynthesis, nodulation and yield of peanuts plants (Arachis hypogaea L.). PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2022; 190:231-239. [PMID: 36137309 DOI: 10.1016/j.plaphy.2022.08.006] [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: 06/13/2022] [Revised: 08/04/2022] [Accepted: 08/11/2022] [Indexed: 06/16/2023]
Abstract
This study aimed to investigate the roles of selenium (Se) application on the profile of photosynthetic pigments, oxidant metabolism, flavonoids biosynthesis, nodulation, and its relation to agronomic traits of peanut plants. Two independent experiments were carried out: one conducted in soil and the other in a nutrient solution. When the plants reached the V2 growth stage, five Se doses (0, 7.5, 15, 30, and 45 μg kg-1) and four Se concentrations (0, 5, 10, and 15 μmol L-1) were supplied as sodium selenate. The concentration of photosynthetic pigments, activity of antioxidant enzymes and the concentration of total sugars in peanut leaves increased in response to Se fertilization. In addition, Se improves nitrogen assimilation efficiency by increasing nitrate reductase activity which results in a higher concentration of ureides, amino acids and proteins. Se increases the synthesis of daidzein and genistein in the root, resulting in a greater number of nodules and concentration and transport of ureides to the leaves. Se-treated plants showed greater growth, biomass accumulation in shoots and roots, yield and Se concentration in leaves and grains. Our results contribute to food security and also to increase knowledge about the effects of Se on physiology, biochemistry and biological nitrogen fixation in legume plants.
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Affiliation(s)
- Matheus Luís Oliveira Cunha
- São Paulo State University, Faculty of Agricultural and Veterinary Sciences, Via de Acesso Prof. Paulo Donato Castellane, 14884-900, Jaboticabal, São Paulo, Brazil
| | - Lara Caroline Alves de Oliveira
- São Paulo State University, Faculty of Agricultural and Veterinary Sciences, Via de Acesso Prof. Paulo Donato Castellane, 14884-900, Jaboticabal, São Paulo, Brazil
| | - Vinicius Martins Silva
- São Paulo State University, Faculty of Agricultural and Veterinary Sciences, Via de Acesso Prof. Paulo Donato Castellane, 14884-900, Jaboticabal, São Paulo, Brazil
| | - Gabriel Sgarbiero Montanha
- University of São Paulo, Centre for Nuclear Energy in Agriculture, Laboratory of Nuclear Instrumentation, Avenida Centenário, 303, 13400-970, Piracicaba, Brazil
| | - André Rodrigues Dos Reis
- São Paulo State University (UNESP), School of Science and Engineering, Rua Domingos da Costa Lopes 780, 17602-496, Tupã, Brazil.
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Teixeira GCM, de Prado RM, Rocha AMS, de Oliveira Filho ASB, da Sousa Junior GS, Gratão PL. Action of silicon on the activity of antioxidant enzymes and on physiological mechanisms mitigates water deficit in sugarcane and energy cane plants. Sci Rep 2022; 12:17487. [PMID: 36261673 PMCID: PMC9581957 DOI: 10.1038/s41598-022-21680-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 09/30/2022] [Indexed: 01/12/2023] Open
Abstract
Production of sugarcane and more recently of energy cane strengthen renewable bioenergy production capacity. However, droughts resulting from climate change have limited the production of these crops. One of the strategies to attenuate water deficit damage in these crops is the use of silicate, which contributes to plant physiology. This strategy is likely to increase water use efficiency, thus promoting crop sustainability. Notwithstanding, studies on this issue are still incipient. This study assesses whether Si applied via fertigation and foliar spraying in the seedling production phase and as a complement after seedling transplanting to the soil is efficient in attenuating water deficit in sugarcane and energy cane. The study further elucidates physiological and biochemical mechanisms involved in this process. For this, the authors conducted two experiments: one with sugarcane and the other with energy cane. Treatments were arranged in randomized blocks with 5 replications, in a 2 × 2 factorial scheme. Factors consisted of the absence (-Si) and presence of Si (+ Si) applied via fertigation and foliar spraying; and two water regimes: 70% (without water deficit) and 30% (severe water deficit) of the soil water retention capacity. Silicon was supplied during the formation phase of presprouted seedlings and during the transplanting of seedlings to pots filled with samples of Entisol (Quartzipsamment). In these pots, water regimes were induced from 7 to 160 days after transplanting. Severe water deficit reduced the water content and water potential of plants. This situation induced oxidative stress and impaired gas exchange and photosynthetic water use efficiency, reducing plant growth. Silicon supply via fertigation in association with foliar spraying in the seedling formation phase with complementation after transplanting was efficient in increasing Si accumulation in the plants. Silicon was effective in attenuating severe water deficit damage up to initial culm formation through mechanisms that maintain water and physiological balance by favoring the antioxidant defense system in sugarcane and energy cane plants.
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Affiliation(s)
- Gelza Carliane Marques Teixeira
- grid.410543.70000 0001 2188 478XLaboratory of Plant Nutrition, Department of Soils and Fertilizers, São Paulo State University (UNESP), Jaboticabal, São Paulo, Brazil
| | - Renato Mello de Prado
- grid.410543.70000 0001 2188 478XLaboratory of Plant Nutrition, Department of Soils and Fertilizers, São Paulo State University (UNESP), Jaboticabal, São Paulo, Brazil
| | - Antonio Márcio Souza Rocha
- grid.410543.70000 0001 2188 478XLaboratory of Biogeochemistry, Department of Technology, São Paulo State University (UNESP), Jaboticabal, São Paulo, Brazil
| | - Antonio Santana Batista de Oliveira Filho
- grid.410543.70000 0001 2188 478XLaboratory of Plant Nutrition, Department of Soils and Fertilizers, São Paulo State University (UNESP), Jaboticabal, São Paulo, Brazil
| | - Gilmar Silveira da Sousa Junior
- grid.410543.70000 0001 2188 478XLaboratory of Plant Physiology, Department of Biology Applied to Agriculture, São Paulo State University (UNESP), Jaboticabal, São Paulo, Brazil
| | - Priscila Lupino Gratão
- grid.410543.70000 0001 2188 478XLaboratory of Plant Physiology, Department of Biology Applied to Agriculture, São Paulo State University (UNESP), Jaboticabal, São Paulo, Brazil
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Singh S, Dubey NK, Singh VP. Nitric oxide and hydrogen peroxide independently act in mitigating chromium stress in Triticum aestivum L. seedlings: Regulation of cell death, chromium uptake, antioxidant system, sulfur assimilation and proline metabolism. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2022; 183:76-84. [PMID: 35569168 DOI: 10.1016/j.plaphy.2022.05.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 04/29/2022] [Accepted: 05/05/2022] [Indexed: 05/12/2023]
Abstract
In this study, we have explored potential of a nitric oxide (NO) donor (SNP, sodium nitroprusside) and hydrogen peroxide (H2O2) in curtailing stress of hexavalent chromium [Cr(VI)] in wheat seedlings. Cr(VI) stress caused a significant decline in growth (30%) and photosynthesis (13%) as a result of enhanced uptake of Cr(VI) and root tips cell death. Further, Cr(VI) stress also accelerated indices of oxidative stress but differentially regulated antioxidant system. But application of either NO or H2O2 separately significantly mitigated Cr(VI) stress by reducing cell death and Cr(VI) uptake in roots, and oxidative stress markers. The application of c-PTIO [2-(4-carboxy-2-phenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide, a scavenger of NO] and N-acetyl-L-cysteine (a scavenger of ROS) reserved alleviatory effect of NO and H2O2, respectively and thus further increased Cr(VI) toxicity. Application of diphenylene iodonium (DPI, an inhibitor of NADPH oxidases) also further increased Cr(VI) toxicity. But SNP and H2O2 significantly rescued negative effects of DPI and c-PTIO, respectively under Cr(VI) stress. Overall results suggested that NO and H2O2 both independently act in mitigating Cr(VI) stress in wheat seedlings by minimizing cell death, restricting Cr(VI) uptake in roots, and increasing antioxidant system, sulfur assimilation and proline metabolism.
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Affiliation(s)
- Samiksha Singh
- Centre of Advanced Studies in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Nawal Kishore Dubey
- Centre of Advanced Studies in Botany, Institute of Science, Banaras Hindu University, Varanasi, 221005, India.
| | - Vijay Pratap Singh
- Plant Physiology Laboratory, Department of Botany, C.M.P. Degree College, A Constituent Post Graduate College of University of Allahabad, Prayagraj, 211002, India
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de Souza Rodrigues J, Ventura RB, da Silva Santos RT, Bacha AL, Gratão PL, Grey TL, da Costa Aguiar Alves PL. Effect of subdoses of sugarcane ripeners on lettuce physiology in a drift scenario. ECOTOXICOLOGY (LONDON, ENGLAND) 2021; 30:575-584. [PMID: 33755842 DOI: 10.1007/s10646-021-02375-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/22/2021] [Indexed: 06/12/2023]
Abstract
In order to understand the physiological effects of ripeners in sensitive crops, the objective of this work was to evaluate the effect of subdoses of the ripeners glyphosate, trinexapac-ethyl and sulfometuron methyl commonly used in sugarcane, in the growth of lettuce cultivar 'Lucy Brown' and 'Vanda'. To address the effects of the products in the lettuce physiology, analyses of fresh weight, dry weight, number of leaves, chlorophyll content, quantum efficiency of photosystem II, lipid peroxidation (MDA), hydrogen peroxide (H2O2), glutathione reductase (GR), guaiacol peroxidase (GPOX) were performed. We observed that among the products tested, glyphosate had minor impact on plant growth, compared to trinexapac-ethyl and sulfometuron methyl. All products induced a decrease in chlorophyll content for both cultivars. Chlorophyll A fluorescence suffered a major reduction with trinexapac-ethyl and sulfometuron methyl in 'Vanda' and no differences were observed for 'Lucy Brown'. MDA content and enzyme quantification varied by cultivar and the sugarcane ripener tested. By disturbing chlorophyll content and quantum efficiency of photosystem II, through these sugarcane ripeners did not have direct mode of action affecting photosystem II, they can cause some level of damage and activate different mechanisms and at different times, in response to stress. In this sense, it is possible to observe that reduced doses of glyphosate, trinexapac ethyl, and sulfometuron methyl affect the development of lettuce at different levels and trigger an oxidative response that was cultivar dependent.
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Affiliation(s)
- Juliana de Souza Rodrigues
- UNESP/FCAV, Sao Paulo State University, Via de Acesso Professor Paulo Donato Castelane Castellane S/N - Vila Industrial, Jaboticabal, Sao Paulo, Brazil.
- University of Georgia, 2360 Rainwater Road, Tifton, Georgia, USA.
| | - Ricardo Borjas Ventura
- UNESP/FCAV, Sao Paulo State University, Via de Acesso Professor Paulo Donato Castelane Castellane S/N - Vila Industrial, Jaboticabal, Sao Paulo, Brazil
- Universidad Nacional Agraria La Molina, Av. La Molina S/N, La Molina, Lima, Peru
| | - Renata Thaysa da Silva Santos
- UNESP/FCAV, Sao Paulo State University, Via de Acesso Professor Paulo Donato Castelane Castellane S/N - Vila Industrial, Jaboticabal, Sao Paulo, Brazil
| | - Allan Lopes Bacha
- UNESP/FCAV, Sao Paulo State University, Via de Acesso Professor Paulo Donato Castelane Castellane S/N - Vila Industrial, Jaboticabal, Sao Paulo, Brazil
| | - Priscila Lupino Gratão
- UNESP/FCAV, Sao Paulo State University, Via de Acesso Professor Paulo Donato Castelane Castellane S/N - Vila Industrial, Jaboticabal, Sao Paulo, Brazil
| | | | - Pedro Luís da Costa Aguiar Alves
- UNESP/FCAV, Sao Paulo State University, Via de Acesso Professor Paulo Donato Castelane Castellane S/N - Vila Industrial, Jaboticabal, Sao Paulo, Brazil
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Mateus MPDB, Tavanti RFR, Tavanti TR, Santos EF, Jalal A, Reis ARD. Selenium biofortification enhances ROS scavenge system increasing yield of coffee plants. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 209:111772. [PMID: 33316726 DOI: 10.1016/j.ecoenv.2020.111772] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 12/02/2020] [Accepted: 12/04/2020] [Indexed: 05/19/2023]
Abstract
There are conclusive evidences of selenium (Se) deficiency in Brazilian soils and foods. Brazil is the largest producer and consumer of coffee worldwide, which favors agronomic biofortification of its coffee. This study aimed to evaluate effects of foliar application of three formulations and six rates of Se on antioxidant metabolism, agronomic biofortification and yield of coffee beans. Seven Se concentrations (0, 10, 20, 40, 80, 100 and 160 mg L-1) were applied from three formulations of Se (sodium selenate, nano-Se 1500, and nano-Se 5000). Selenium application up to 40 mg L-1 increased the concentration of photosynthetic pigments such as chlorophylls, pheophytins and carotenoids in coffee leaves. Foliar application of Se ranging from 20 to 80 mg L-1 decreased lipid peroxidation and concentration of hydrogen peroxide, but increased superoxide dismutase, ascorbate peroxidase, catalase and glutathione reductase activities in coffee leaves. These results indicated that foliar Se application stimulates antioxidative metabolism to mitigate reactive oxygen species. Foliar application of 20 mg Se L-1 of sodium selenate increased coffee yield by 38%, and 160 mg Se L-1 of nano-Se 5000 increased dramatically coffee yield by 42%. Selenium concentration in grains ranged from 0.116 to 4.47 mg kg-1 (sodium selenate), 4.84 mg kg-1 (nano-Se 1500) and 5.82 mg kg-1 (nano-Se 5000). The results suggest the beneficial effect of Se on the increment of photosynthetic pigments, antioxidative metabolism, increased coffee yield and nutritional quality of grains. The recommended foliar Se application in this study can mitigate abiotic stressors such as high temperatures resulting in higher yield of coffee plants.
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Affiliation(s)
| | | | | | - Elcio Ferreira Santos
- Federal Institute of Mato Grosso do Sul (IFMS), MS - 473, km 23, Nova Andradina 75.750-000, MS, Brazil
| | - Arshad Jalal
- São Paulo State University (UNESP), Ilha Solteira 15385-000, SP, Brazil
| | - André Rodrigues Dos Reis
- São Paulo State University (UNESP), School of Sciences and Engineering, Tupã 17602-496, SP, Brazil.
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Hasanuzzaman M, Bhuyan MHMB, Raza A, Hawrylak-Nowak B, Matraszek-Gawron R, Nahar K, Fujita M. Selenium Toxicity in Plants and Environment: Biogeochemistry and Remediation Possibilities. PLANTS (BASEL, SWITZERLAND) 2020; 9:E1711. [PMID: 33291816 PMCID: PMC7762096 DOI: 10.3390/plants9121711] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 12/02/2020] [Accepted: 12/03/2020] [Indexed: 02/06/2023]
Abstract
Selenium (Se) is a widely distributed trace element with dual (beneficial or toxic) effects for humans, animals, and plants. The availability of Se in the soil is reliant on the structure of the parental material and the procedures succeeding to soil formation. Anthropogenic activities affect the content of Se in the environment. Although plants are the core source of Se in animal and human diet, the role of Se in plants is still debatable. A low concentration of Se can be beneficial for plant growth, development, and ecophysiology both under optimum and unfavorable environmental conditions. However, excess Se results in toxic effects, especially in Se sensitive plants, due to changing structure and function of proteins and induce oxidative/nitrosative stress, which disrupts several metabolic processes. Contrary, Se hyperaccumulators absorb and tolerate exceedingly large amounts of Se, could be potentially used to remediate, i.e., remove, transfer, stabilize, and/or detoxify Se-contaminants in the soil and groundwater. Thereby, Se-hyperaccumulators can play a dynamic role in overcoming global problem Se-inadequacy and toxicity. However, the knowledge of Se uptake and metabolism is essential for the effective phytoremediation to remove this element. Moreover, selecting the most efficient species accumulating Se is crucial for successful phytoremediation of a particular Se-contaminated area. This review emphasizes Se toxicity in plants and the environment with regards to Se biogeochemistry and phytoremediation aspects. This review follows a critical approach and stimulates thought for future research avenues.
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Affiliation(s)
- Mirza Hasanuzzaman
- Department of Agronomy, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka 1207, Bangladesh
| | | | - Ali Raza
- Key Lab of Biology and Genetic Improvement of Oil Crops, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Wuhan 430062, China;
| | - Barbara Hawrylak-Nowak
- Department of Botany and Plant Physiology, University of Life Sciences in Lublin, Akademicka 15, 20-950 Lublin, Poland; (B.H.-N.); (R.M.-G.)
| | - Renata Matraszek-Gawron
- Department of Botany and Plant Physiology, University of Life Sciences in Lublin, Akademicka 15, 20-950 Lublin, Poland; (B.H.-N.); (R.M.-G.)
| | - Kamrun Nahar
- Department of Agricultural Botany, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka 1207, Bangladesh;
| | - Masayuki Fujita
- Laboratory of Plant Stress Responses, Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, 2393 Ikenobe, Miki-cho, Kita-gun, Kagawa 761-0795, Japan
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11
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Hasanuzzaman M, Bhuyan MHMB, Raza A, Hawrylak-Nowak B, Matraszek-Gawron R, Nahar K, Fujita M. Selenium Toxicity in Plants and Environment: Biogeochemistry and Remediation Possibilities. PLANTS (BASEL, SWITZERLAND) 2020; 9:plants9121711. [PMID: 33291816 DOI: 10.1016/j.envexpbot.2020.104170] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 12/02/2020] [Accepted: 12/03/2020] [Indexed: 05/22/2023]
Abstract
Selenium (Se) is a widely distributed trace element with dual (beneficial or toxic) effects for humans, animals, and plants. The availability of Se in the soil is reliant on the structure of the parental material and the procedures succeeding to soil formation. Anthropogenic activities affect the content of Se in the environment. Although plants are the core source of Se in animal and human diet, the role of Se in plants is still debatable. A low concentration of Se can be beneficial for plant growth, development, and ecophysiology both under optimum and unfavorable environmental conditions. However, excess Se results in toxic effects, especially in Se sensitive plants, due to changing structure and function of proteins and induce oxidative/nitrosative stress, which disrupts several metabolic processes. Contrary, Se hyperaccumulators absorb and tolerate exceedingly large amounts of Se, could be potentially used to remediate, i.e., remove, transfer, stabilize, and/or detoxify Se-contaminants in the soil and groundwater. Thereby, Se-hyperaccumulators can play a dynamic role in overcoming global problem Se-inadequacy and toxicity. However, the knowledge of Se uptake and metabolism is essential for the effective phytoremediation to remove this element. Moreover, selecting the most efficient species accumulating Se is crucial for successful phytoremediation of a particular Se-contaminated area. This review emphasizes Se toxicity in plants and the environment with regards to Se biogeochemistry and phytoremediation aspects. This review follows a critical approach and stimulates thought for future research avenues.
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Affiliation(s)
- Mirza Hasanuzzaman
- Department of Agronomy, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka 1207, Bangladesh
| | - M H M Borhannuddin Bhuyan
- Citrus Research Station, Bangladesh Agricultural Research Institute, Jaintapur, Sylhet 3156, Bangladesh
| | - Ali Raza
- Key Lab of Biology and Genetic Improvement of Oil Crops, Oil Crops Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Wuhan 430062, China
| | - Barbara Hawrylak-Nowak
- Department of Botany and Plant Physiology, University of Life Sciences in Lublin, Akademicka 15, 20-950 Lublin, Poland
| | - Renata Matraszek-Gawron
- Department of Botany and Plant Physiology, University of Life Sciences in Lublin, Akademicka 15, 20-950 Lublin, Poland
| | - Kamrun Nahar
- Department of Agricultural Botany, Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka 1207, Bangladesh
| | - Masayuki Fujita
- Laboratory of Plant Stress Responses, Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, 2393 Ikenobe, Miki-cho, Kita-gun, Kagawa 761-0795, Japan
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12
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Singh RP, Handa R, Manchanda G. Nanoparticles in sustainable agriculture: An emerging opportunity. J Control Release 2020; 329:1234-1248. [PMID: 33122001 DOI: 10.1016/j.jconrel.2020.10.051] [Citation(s) in RCA: 94] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 10/22/2020] [Accepted: 10/23/2020] [Indexed: 10/23/2022]
Abstract
Conventional agriculture often relies on bulky doses of fertilizers and pesticides that have adversely affected the living beings as well as the ecosystems. As a basic tenet of sustainable agriculture, minimum agrochemicals should be used so that the environment can be protected and various species can be conserved. Further, sustainable agriculture should be a low input system, where the production costs are lower and net returns are higher. The application of nanotechnology in agriculture can significantly enhance the efficiency of agricultural inputs and thus it offers a significant way to maintain sustainable development of agroecosystems via nanoparticles. In this regard, nano-plant growth promoters, nanopesticides, nanofertilizers, nano-herbicides, agrochemical encapsulated nanocarrier systems etc. have been developed for the potential applications in agriculture. These can have great benefits for agriculture, including higher production of crops, inhibition of plant pathogens, removal of unwanted weeds and insects with lesser cost, energy and waste production. However, there are several concerns related to the use of nanoparticles in agriculture. These include the approaches for synthesis, their mechanisms of penetration to applied surfaces and the risks involved. Though, advent of new technologies has significantly improved the synthesis and application of nanomaterials in agriculture, there are many uncertainties regarding nano-synthesis, their way of utilization, uptake and internalization inside the crop cells. Therefore, an elaborate investigation is required for deciphering the engineered nanomaterials, assessing their mechanistic application and agroecological toxicity. Hence, this review is aimed to critically highlight the NPs material application and points towards the vital gaps in the use of nanotechnology for sustainable agriculture.
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Affiliation(s)
- Raghvendra Pratap Singh
- Department of Research & Development, Biotechnology, Uttaranchal University, Uttarakhand 248007, India.
| | - Rahul Handa
- Department of Botany and Environment Studies, DAV University, Jalandhar, Punjab 144001, India
| | - Geetanjali Manchanda
- Department of Botany and Environment Studies, DAV University, Jalandhar, Punjab 144001, India.
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13
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Moldes CA, Cantarelli MA, Heredia JZ, Camiña JM. Multivariate Analysis Reveals Different Responses of Antioxidant Defense in Wheat Plants Exposed to Arsenic (As) and Cadmium (Cd). CURR ANAL CHEM 2020. [DOI: 10.2174/1573411016666200324115218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Multivariate analysis is a chemometric tool that has been little explored to
determine physiological status under heavy metal stress. Nevertheless, PCA has an unexplored potential
to determine the plant physiologic status and its modification under stress factors like heavy
metals.
Objectives:
This work aims to assess the physiological and biochemical effects and responses of
wheat plants under the different exposition of As and Cd using multivariate models.
Materials and Methods:
Wheat plants growing in a greenhouse were exposed to 0, 10 and 50 mg kg-1
soil of As and 0, 10 and 33 50 mg kg-1 soil of Cd until growth stage 5. After 56 days, wheat leaves
and roots were collected to determine dry weight, lipid peroxidation and the activity of three enzymes:
catalase, ascorbate peroxidase and guaiacol peroxidase. These measures were considered as
the variables of three performed multivariate models to determine physiological status.
Results:
Through the interpretation of score plot and loading plot in combination, it was possible to
determine that both As and Cd affect chlorophyll content and antioxidant response. However, a chlorophyll
decrease and a lipid peroxidation increase were observed together with an inhibition of antioxidant
response more accentuated in wheat plants exposed to As than those exposed to Cd.
Conclusions:
Multivariate analysis allows us to determine the differences between the physiological
behavior of both stressors, which turn this chemometric tools useful for the characterization of a
physiological response.
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Affiliation(s)
- Carlos A. Moldes
- Facultad de Ciencias Exactas y Naturales (UNLPam), Av. Uruguay 161 (6300) Santa Rosa, La Pampa, Argentina
| | - Miguel A. Cantarelli
- Facultad de Ciencias Exactas y Naturales (UNLPam), Av. Uruguay 161 (6300) Santa Rosa, La Pampa, Argentina
| | - Jorgelina Z. Heredia
- Facultad de Ciencias Exactas y Naturales (UNLPam), Av. Uruguay 161 (6300) Santa Rosa, La Pampa, Argentina
| | - José M. Camiña
- Facultad de Ciencias Exactas y Naturales (UNLPam), Av. Uruguay 161 (6300) Santa Rosa, La Pampa, Argentina
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14
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Forti JC, Loretti GH, Tadayozzi YS, de Andrade AR. A phytotoxicity assessment of the efficiency 2,4-D degradation by different oxidative processes. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 266:110588. [PMID: 32310122 DOI: 10.1016/j.jenvman.2020.110588] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 04/07/2020] [Accepted: 04/08/2020] [Indexed: 06/11/2023]
Abstract
Highly stable compounds such as dichlorophenoxyacetic acid (2,4-D), which are present in the commercial herbicide Tordon®, are difficult to degrade. Therefore, the objective of this work was to degrade 2,4-D present in Tordon® using different oxidative processes, such as anodic oxidation, Fenton reactions, electro-Fenton, photoelectro-oxidation and photoelectro-Fenton processes. An oxide electrode with the nominal composition Ti/Ru0.3Ti0.7O2 was prepared and inserted into an electrochemical cell containing 100 mL of 0.05 mol L-1 Na2SO4 (pH 3) and 100 mg L-1 of Tordon®. Electrolysis was performed applying a constant current of 50 mA cm-2 for 2 h. The concentration of Fenton's reagent was varied from 5 to 10 mg L-1 (Fe2+), and from 50 to 100 mg L-1 (H2O2). Chemical analyses of the total organic carbon (TOC) and the chemical oxygen demand (COD) were performed whilst high-performance liquid chromatography (HPLC) was used to monitor the degradation. A phytotoxicity assessment was performed using cucumber seeds as bioindicators. Germination tests were performed using cucumber seeds in the presence of the solutions collected after the application of the oxidative processes. Several analyses were carried out to determine the following: total protein content, the extent of lipid peroxidation, activity of superoxide dismutase, hydrogen peroxide content, catalase activity, and glutathione reductase activity. Oxidation of 2,4-D was observed in all of the oxidative processes, and significant results for the removal of TOC and COD were obtained. Anodic oxidation, and the Fenton and photoelectro-oxidation processes were the least efficient, affording 2,4-dichlorophenol, 2-chlorohydroquinone, and 2-chlorobenzoquinone as by-products. The electro-Fenton and photoelectro-Fenton processes were the most efficient, giving short-chain acids as the main by-products. The formation of these by-products directly affected the phytotoxicity results. The processes that formed short-chain by-products did not generate significant oxidative stress during seed growth, and therefore, seed germination tests were successful.
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Affiliation(s)
- Juliane C Forti
- São Paulo State University (UNESP), School of Sciences and Engineering, Biosystems Engineering Department, 17602-496, Tupã, SP, Brazil.
| | - Gustavo H Loretti
- São Paulo State University (UNESP), School of Sciences and Engineering, Biosystems Engineering Department, 17602-496, Tupã, SP, Brazil
| | - Yasmin S Tadayozzi
- São Paulo State University (UNESP), School of Sciences and Engineering, Biosystems Engineering Department, 17602-496, Tupã, SP, Brazil
| | - Adalgisa R de Andrade
- University of São Paulo (USP), Department of Chemistry, Faculty of Philosophy Sciences and Letters at Ribeirão Preto, 14040-901, Ribeirão Preto, SP, Brazil; UNESP, National Institute for Alternative Technologies of Detection, Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM),Institute of Chemistry, P.O. Box 355, 14800-900, Araraquara, SP, Brazil
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15
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Auobi Amirabad S, Behtash F, Vafaee Y. Selenium mitigates cadmium toxicity by preventing oxidative stress and enhancing photosynthesis and micronutrient availability on radish (Raphanus sativus L.) cv. Cherry Belle. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:12476-12490. [PMID: 31997246 DOI: 10.1007/s11356-020-07751-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 01/14/2020] [Indexed: 05/08/2023]
Abstract
We aimed to examine the effects of selenium on the tolerance of radish plants CV. Cherri Belle under cadmium phytotoxicity. The biomass accumulation was drastically decreased under Cd toxicity and the supplementary Se maintained the biomass acquisition under Cd pressure. The chlorophyll index (SPAD), PSII efficiency (Fv/Fm), and PSII quantum yield (ΦPSII) were declined in response to Cd treatment, while Se nutrition improved these variables in a dose-dependent manner. The highest H2O2 and MDA contents were observed in the plants fed with 10 mg-1 L Cd. The Cd stress resulted in a considerable decline in the activities of GPX, CAT, and APX antioxidant enzymes, while Se supplementation increased their activities in the Cd-treated plants. Based on the mineral analyses, no Cd was traced in the control plants, while the Cd concentration in both roots and leaves of the Cd-stressed radish plants increased with increasing the supplemented Cd levels. Compared with plants solely treated with 10 mg L-1 Cd, Se nutrition declined the Cd absorption in roots and in leaves. The concentration of evaluated micronutrients including Fe, Mn, Cu, and Zn tended to decrease in the Cd-imposed plants in comparison with control plants. Se nutrition of both stressed and non-stressed radish plants increased the concentrations of the studied microelements, except for Zn in which the individual use of Se led to a decrease in the Zn content. Significant positive and negative correlation values were found among the studied traits and the principle component analysis (PCA) biplot and Ward dendrogram confirmed the results of the correlation analysis. Se proved to be efficient in the alleviation of Cd-triggered deleterious effects by improving biomass acquisition, enhancing chlorophyll biosynthesis and fluorescence, and increasing micronutrient uptake in a dose-dependent manner. Furthermore, the Se alleviation mechanism under Cd stress was also connected with the activation of enzymatic antioxidative protection system as well as with decreasing Cd uptake, transport, and distribution in radish leaves. Altogether, our research strongly suggests the implementation of Se in the growth medium to enhance the tolerance of radish plants under Cd stress.
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Affiliation(s)
- Setareh Auobi Amirabad
- Department of Horticultural Science, Faculty of Agriculture, University of Maraghe, Maraghe, 55181-83111, Iran
| | - Farhad Behtash
- Department of Horticultural Science, Faculty of Agriculture, University of Maraghe, Maraghe, 55181-83111, Iran
| | - Yavar Vafaee
- Department of Horticultural Science, Faculty of Agriculture, University of Kurdistan, Sanandaj, 66177-15175, Iran.
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16
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Kolbert Z, Molnár Á, Feigl G, Van Hoewyk D. Plant selenium toxicity: Proteome in the crosshairs. JOURNAL OF PLANT PHYSIOLOGY 2019; 232:291-300. [PMID: 30544054 DOI: 10.1016/j.jplph.2018.11.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 11/02/2018] [Accepted: 11/02/2018] [Indexed: 05/23/2023]
Abstract
The metalloid element, selenium (Se) is in many ways special and perhaps because of this its research in human and plant systems is of great interest. Despite its non-essentiality, higher plants take it up and metabolize it via sulfur pathways, but higher amounts of Se cause toxic symptoms in plants. However, the molecular mechanisms of selenium phytotoxicity have been only partly revealed; the data obtained so far point out that Se toxicity targets the plant proteome. Besides seleno- and oxyproteins, nitroproteins are also formed due to Se stress. In order to minimize proteomic damages induced by Se, certain plants are able to redirect selenocysteine away from protein synthesis thus preventing Se-protein formation. Additionally, the damaged or malformed selenoproteins, oxyproteins and nitroproteins may be removed by proteasomes. Based on the literature this review sets Se toxicity mechanisms into a new concept and it draws attention to the importance of Se-induced protein-level changes.
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Affiliation(s)
- Z Kolbert
- Department of Plant Biology, University of Szeged, 6726 Szeged Közép fasor 52, Hungary.
| | - Á Molnár
- Department of Plant Biology, University of Szeged, 6726 Szeged Közép fasor 52, Hungary.
| | - G Feigl
- Department of Plant Biology, University of Szeged, 6726 Szeged Közép fasor 52, Hungary.
| | - D Van Hoewyk
- Department of Biology, Coastal Carolina University, Conway, SC 29526, USA.
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17
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Cao D, Liu Y, Ma L, Jin X, Guo G, Tan R, Liu Z, Zheng L, Ye F, Liu W. Transcriptome analysis of differentially expressed genes involved in selenium accumulation in tea plant (Camellia sinensis). PLoS One 2018; 13:e0197506. [PMID: 29856771 PMCID: PMC5983420 DOI: 10.1371/journal.pone.0197506] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 05/03/2018] [Indexed: 01/09/2023] Open
Abstract
Tea plant (Camellia sinensis) has strong enrichment ability for selenium (Se). Selenite is the main form of Se absorbed and utilized by tea plant. However, the mechanism of selenite absorption and accumulation in tea plant is still unknown. In this study, RNA sequencing (RNA-seq) was used to perform transcriptomic analysis on the molecular mechanism of selenite absorption and accumulation in tea plant. 397.98 million high-quality reads were obtained and assembled into 168,212 unigenes, 89,605 of which were extensively annotated. There were 60,582 and 1,362 differentially expressed genes (DEGs) in roots and leaves, respectively. RNA-seq results were further validated by quantitative RT-PCR. Based on GO terms, the unigenes were mainly involved in cell, binding and metabolic process. KEGG pathway enrichment analysis showed that predominant pathways included ribosome and protein processing in endoplasmic reticulum. Further analysis revealed that sulfur metabolism, glutathione metabolism, selenocompound metabolism and plant hormone signal transduction responded to selenite in tea plant. Additionally, a large number of genes of higher expressions associated with phosphate transporters, sulfur assimilation, antioxidant enzymes, antioxidant substances and responses to ethylene and jasmonic acid were identified. Stress-related plant hormones might play a signaling role in promoting sulfate/selenite uptake and assimilation in tea plant. Moreover, some other Se accumulation mechanisms of tea plant were found. Our study provides a possibility for controlling Se accumulation in tea plant through bio-technologies and will be helpful for breeding new tea cultivars.
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Affiliation(s)
- Dan Cao
- Fruit and Tea Research Institute, Hubei Academy of Agricultural Sciences, Wuhan, Hubei, China
| | - Yanli Liu
- Fruit and Tea Research Institute, Hubei Academy of Agricultural Sciences, Wuhan, Hubei, China
| | - Linlong Ma
- Fruit and Tea Research Institute, Hubei Academy of Agricultural Sciences, Wuhan, Hubei, China
| | - Xiaofang Jin
- Fruit and Tea Research Institute, Hubei Academy of Agricultural Sciences, Wuhan, Hubei, China
| | - Guiyi Guo
- Henan Key Laboratory of Tea Comprehensive utilization in South Henan, Xinyang Agriculture and Forestry University, Xinyang, Henan, China
| | - Rongrong Tan
- Fruit and Tea Research Institute, Hubei Academy of Agricultural Sciences, Wuhan, Hubei, China
| | - Zheng Liu
- Fruit and Tea Research Institute, Hubei Academy of Agricultural Sciences, Wuhan, Hubei, China
| | - Lin Zheng
- Fruit and Tea Research Institute, Hubei Academy of Agricultural Sciences, Wuhan, Hubei, China
| | - Fei Ye
- Fruit and Tea Research Institute, Hubei Academy of Agricultural Sciences, Wuhan, Hubei, China
| | - Wei Liu
- Henan Key Laboratory of Tea Comprehensive utilization in South Henan, Xinyang Agriculture and Forestry University, Xinyang, Henan, China
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18
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Dobrzanski T, Gravina F, Steckling B, Olchanheski LR, Sprenger RF, Espírito Santo BC, Galvão CW, Reche PM, Prestes RA, Pileggi SAV, Campos FR, Azevedo RA, Sadowsky MJ, Beltrame FL, Pileggi M. Bacillus megaterium strains derived from water and soil exhibit differential responses to the herbicide mesotrione. PLoS One 2018; 13:e0196166. [PMID: 29694403 PMCID: PMC5918998 DOI: 10.1371/journal.pone.0196166] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Accepted: 04/06/2018] [Indexed: 02/07/2023] Open
Abstract
The intense use of herbicides for weed control in agriculture causes selection pressure on soil microbiota and water ecosystems, possibly resulting in changes to microbial processes, such as biogeochemical cycles. These xenobiotics may increase the production of reactive oxygen species and consequently affect the survival of microorganisms, which need to develop strategies to adapt to these conditions and maintain their ecological functionality. This study analyzed the adaptive responses of bacterial isolates belonging to the same species, originating from two different environments (water and soil), and subjected to selection pressure by herbicides. The effects of herbicide Callisto and its active ingredient, mesotrione, induced different adaptation strategies on the cellular, enzymatic, and structural systems of two Bacillus megaterium isolates obtained from these environments. The lipid saturation patterns observed may have affected membrane permeability in response to this herbicide. Moreover, this may have led to different levels of responses involving superoxide dismutase and catalase activities, and enzyme polymorphisms. Due to these response systems, the strain isolated from water exhibited higher growth rates than did the soil strain, in evaluations made in oligotrophic culture media, which would be more like that found in semi-pristine aquatic environments. The influence of the intracellular oxidizing environments, which changed the mode of degradation of mesotrione in our experimental model and produced different metabolites, can also be observed in soil and water at sites related to agriculture. Since the different metabolites may present different levels of toxicity, we suggest that this fact should be considered in studies on the fate of agrochemicals in different environments.
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Affiliation(s)
- Tatiane Dobrzanski
- Laboratório de Microbiologia Ambiental, Setor de Ciências Biológicas e da Saúde, Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Ponta Grossa, Paraná, Brazil
| | - Fernanda Gravina
- Laboratório de Microbiologia Ambiental, Setor de Ciências Biológicas e da Saúde, Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Ponta Grossa, Paraná, Brazil
| | - Bruna Steckling
- Laboratório de Microbiologia Ambiental, Setor de Ciências Biológicas e da Saúde, Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Ponta Grossa, Paraná, Brazil
| | - Luiz R. Olchanheski
- Laboratório de Biologia Molecular e Ecologia Microbiana, Instituto de Ciências Biomédicas, Departamento de Microbiologia, Universidade de São Paulo, São Paulo, São Paulo, Brazil
| | - Ricardo F. Sprenger
- Separare - Núcleo de Cromatografia, Departamento de Química, Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil
| | - Bruno C. Espírito Santo
- Laboratório de Biotecnologia Microbiana, Departamento de Biotecnologia, Genética e Biologia Celular, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Carolina W. Galvão
- Laboratório de Biologia Molecular Microbiana, Setor de Ciências Biológicas e da Saúde, Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Ponta Grossa, Paraná, Brazil
| | - Péricles M. Reche
- Laboratório de Pesquisa em Recursos Hídricos, Setor de Ciências Biológicas e da Saúde, Departamento de Enfermagem e Saúde Pública, Universidade Estadual de Ponta Grossa, Ponta Grossa, Paraná, Brazil
| | - Rosilene A. Prestes
- Departamento Acadêmico, Campus Ponta Grossa, Universidade Tecnológica Federal do Paraná, UTFPR, Campus Ponta Grossa, Ponta Grossa, Paraná, Brazil
| | - Sônia A. V. Pileggi
- Laboratório de Microbiologia Ambiental, Setor de Ciências Biológicas e da Saúde, Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Ponta Grossa, Paraná, Brazil
| | - Francinete R. Campos
- Laboratório de Biociências e Espectrometria de Massas, Departamento de Farmácia, Universidade Federal do Paraná, Curitiba, Paraná, Brazil
| | - Ricardo A. Azevedo
- Departamento de Genética, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, São Paulo, Brazil
| | - Michael J. Sadowsky
- Department of Soil, Water, and Climate, and The Biotechnology Institute, University of Minnesota, Saint Paul, Minnesota, United States of America
| | - Flávio L. Beltrame
- Laboratório de Fitoterapia, Tecnologia e Química de Produtos Naturais, Departamento de Ciências Farmacêuticas, Setor de Ciências Biológicas e da Saúde, Universidade Estadual de Ponta Grossa, Ponta Grossa, Paraná, Brazil
| | - Marcos Pileggi
- Laboratório de Microbiologia Ambiental, Setor de Ciências Biológicas e da Saúde, Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Ponta Grossa, Paraná, Brazil
- * E-mail:
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19
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Shahid M, Niazi NK, Khalid S, Murtaza B, Bibi I, Rashid MI. A critical review of selenium biogeochemical behavior in soil-plant system with an inference to human health. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 234:915-934. [PMID: 29253832 DOI: 10.1016/j.envpol.2017.12.019] [Citation(s) in RCA: 228] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Revised: 11/22/2017] [Accepted: 12/06/2017] [Indexed: 05/06/2023]
Abstract
Selenium (Se) is an essential trace element for humans and animals, although controversial for different plant species. There exists a narrow line between essential, beneficial and toxic levels of Se to living organisms which greatly varies with Se speciation, as well as the type of living organisms. Therefore, it is crucial to monitor its solid- and solution-phase speciation, exposure levels and pathways to living organisms. Consumption of Se-laced food (cereals, vegetables, legumes and pulses) is the prime source of Se exposure to humans. Thus, it is imperative to assess the biogeochemical behavior of Se in soil-plant system with respect to applied levels and speciation, which ultimately affect Se status in humans. Based on available relevant literature, this review traces a plausible link among (i) Se levels, sources, speciation, bioavailability, and effect of soil chemical properties on selenium bioavailability/speciation in soil; (ii) role of different protein transporters in soil-root-shoot transfer of Se; and (iii) speciation, metabolism, phytotoxicity and detoxification of Se inside plants. The toxic and beneficial effects of Se to plants have been discussed with respect to speciation and toxic/deficient concentration of Se. We highlight the significance of various enzymatic (catalase, peroxidase, superoxide dismutase, ascorbate peroxidase, glutathione peroxidase) and non-enzymatic (phytochelatins and glutathione) antioxidants which help combat Se-induced overproduction of reactive oxygen species (ROS). The review also delineates Se accumulation in edible plant parts from soils containing low or high Se levels; elucidates associated health disorders or risks due to the consumption of Se-deficient or Se-rich foods; discusses the potential role of Se in different human disorders/diseases.
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Affiliation(s)
- Muhammad Shahid
- Department of Environmental Sciences, COMSATS Institute of Information Technology, Vehari 61100, Pakistan.
| | - Nabeel Khan Niazi
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan; MARUM and Department of Geosciences, University of Bremen, Bremen, D-28359, Germany; Southern Cross GeoScience, Southern Cross University, Lismore 2480, NSW, Australia.
| | - Sana Khalid
- Department of Environmental Sciences, COMSATS Institute of Information Technology, Vehari 61100, Pakistan
| | - Behzad Murtaza
- Department of Environmental Sciences, COMSATS Institute of Information Technology, Vehari 61100, Pakistan
| | - Irshad Bibi
- Institute of Soil and Environmental Sciences, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan; Southern Cross GeoScience, Southern Cross University, Lismore 2480, NSW, Australia
| | - Muhammad Imtiaz Rashid
- Department of Environmental Sciences, COMSATS Institute of Information Technology, Vehari 61100, Pakistan; Center of Excellence in Environmental Studies, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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Effect of sodium selenate on photosynthetic efficiency, antioxidative defence system and micronutrients in maize (Zea mays). Biologia (Bratisl) 2018. [DOI: 10.2478/s11756-018-0017-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Wadgaonkar SL, Nancharaiah YV, Esposito G, Lens PNL. Environmental impact and bioremediation of seleniferous soils and sediments. Crit Rev Biotechnol 2018; 38:941-956. [DOI: 10.1080/07388551.2017.1420623] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
| | - Yarlagadda V. Nancharaiah
- Biofouling and Biofilm Processes Section of Water and Steam Chemistry Division, Bhabha Atomic Research Centre, Kalpakkam, Tamil Nadu, India
- Homi Bhabha National Institute, Anushakti Nagar Complex, Mumbai, Maharashtra, India
| | - Giovanni Esposito
- Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Cassino, FR, Italy
| | - Piet N. L. Lens
- UNESCO IHE Institute for Water Education, Delft, The Netherlands
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Qiao B, He B, Cai J, Lam AKY, He W. Induction of oxidative stress and cell apoptosis by selenium: the cure against oral carcinoma. Oncotarget 2017; 8:113614-113621. [PMID: 29371933 PMCID: PMC5768350 DOI: 10.18632/oncotarget.22752] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 10/27/2017] [Indexed: 01/06/2023] Open
Abstract
Oral carcinoma (OC) remains one of the most difficult malignancies to cure. selenium (Se) is an essential trace mineral for human and animals, but high concentrations of Se induce apoptosis and oxidative effects. Although cell apoptosis has been evidenced as a critical mechanism mediating the anticancer activity of Se, the underlying molecular mechanisms remain elusive. To explore the role of Se in rat OC, we examined the weather the oxidative stress-mediated apoptotic pathway induced by Se was involved in the development of OC. In this study, we successfully constructed the OC rat model by 4-Nitroquinoline-1-oxide (4-NQO) exposure which reflected from histopathological observations. Se-induced the productions of methane dicarboxylic aldehyde (MDA) and reactive oxygen species (ROS), which was accompanied by the inhibition of superoxide dismutase (SOD) both in vivo and vitro. The anti-apoptotic gene (Bcl-2) was down-regulated and pro-apoptosis members (Bax, Bak, Cyt-c, caspase9 and caspase3) were up-regulated by Se in OC cells. Meanwhile, we also found that Se could strongly inhibited the cell proliferation of OC lines in vitro. These results suggested that excessive Se could effectively cause oxidative stress and induce apoptosis in OC cells, as a result the OC was also inhibited to some extent. Therefore, the information presented in this study is believed to be helpful in supplementing data for further therapy of OC.
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Affiliation(s)
- Bin Qiao
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, P.R. China
| | - Baoxia He
- Department of Pharmacy, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, Henan, P.R. China
| | - Jinghua Cai
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, P.R. China
| | - Alfred King-Yin Lam
- Cancer Molecular Pathology, School of Medicine and Menzies Health Institute Queensland, Griffith University, Gold Coast, Australia
| | - Wei He
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, P.R. China
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Gupta M, Gupta S. An Overview of Selenium Uptake, Metabolism, and Toxicity in Plants. FRONTIERS IN PLANT SCIENCE 2017; 7:2074. [PMID: 28123395 PMCID: PMC5225104 DOI: 10.3389/fpls.2016.02074] [Citation(s) in RCA: 277] [Impact Index Per Article: 39.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 12/29/2016] [Indexed: 05/18/2023]
Abstract
Selenium (Se) is an essential micronutrient for humans and animals, but lead to toxicity when taken in excessive amounts. Plants are the main source of dietary Se, but essentiality of Se for plants is still controversial. However, Se at low doses protects the plants from variety of abiotic stresses such as cold, drought, desiccation, and metal stress. In animals, Se acts as an antioxidant and helps in reproduction, immune responses, thyroid hormone metabolism. Selenium is chemically similar to sulfur, hence taken up inside the plants via sulfur transporters present inside root plasma membrane, metabolized via sulfur assimilatory pathway, and volatilized into atmosphere. Selenium induced oxidative stress, distorted protein structure and function, are the main causes of Se toxicity in plants at high doses. Plants can play vital role in overcoming Se deficiency and Se toxicity in different regions of the world, hence, detailed mechanism of Se metabolism inside the plants is necessary for designing effective Se phytoremediation and biofortification strategies.
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Affiliation(s)
- Meetu Gupta
- Ecotoxicogenomics Lab, Department of Biotechnology, Jamia Millia IslamiaNew Delhi, India
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Tamaoki M, Maruyama-Nakashita A. Molecular Mechanisms of Selenium Responses and Resistance in Plants. PLANT ECOPHYSIOLOGY 2017. [DOI: 10.1007/978-3-319-56249-0_3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Anjum NA, Sofo A, Scopa A, Roychoudhury A, Gill SS, Iqbal M, Lukatkin AS, Pereira E, Duarte AC, Ahmad I. Lipids and proteins--major targets of oxidative modifications in abiotic stressed plants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:4099-121. [PMID: 25471723 DOI: 10.1007/s11356-014-3917-1] [Citation(s) in RCA: 132] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2014] [Accepted: 11/24/2014] [Indexed: 05/18/2023]
Abstract
Stress factors provoke enhanced production of reactive oxygen species (ROS) in plants. ROS that escape antioxidant-mediated scavenging/detoxification react with biomolecules such as cellular lipids and proteins and cause irreversible damage to the structure of these molecules, initiate their oxidation, and subsequently inactivate key cellular functions. The lipid- and protein-oxidation products are considered as the significant oxidative stress biomarkers in stressed plants. Also, there exists an abundance of information on the abiotic stress-mediated elevations in the generation of ROS, and the modulation of lipid and protein oxidation in abiotic stressed plants. However, the available literature reflects a wide information gap on the mechanisms underlying lipid- and protein-oxidation processes, major techniques for the determination of lipid- and protein-oxidation products, and on critical cross-talks among these aspects. Based on recent reports, this article (a) introduces ROS and highlights their relationship with abiotic stress-caused consequences in crop plants, (b) examines critically the various physiological/biochemical aspects of oxidative damage to lipids (membrane lipids) and proteins in stressed crop plants, (c) summarizes the principles of current technologies used to evaluate the extent of lipid and protein oxidation, (d) synthesizes major outcomes of studies on lipid and protein oxidation in plants under abiotic stress, and finally, (e) considers a brief cross-talk on the ROS-accrued lipid and protein oxidation, pointing to the aspects unexplored so far.
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Affiliation(s)
- Naser A Anjum
- CESAM-Centre for Environmental & Marine Studies and Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal,
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Capaldi Arruda SC, Diniz Silva AL, Moretto Galazzi R, Antunes Azevedo R, Zezzi Arruda MA. Nanoparticles applied to plant science: A review. Talanta 2015; 131:693-705. [DOI: 10.1016/j.talanta.2014.08.050] [Citation(s) in RCA: 134] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 08/16/2014] [Accepted: 08/18/2014] [Indexed: 10/24/2022]
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Peters LP, Carvalho G, Martins PF, Dourado MN, Vilhena MB, Pileggi M, Azevedo RA. Differential responses of the antioxidant system of ametryn and clomazone tolerant bacteria. PLoS One 2014; 9:e112271. [PMID: 25380132 PMCID: PMC4224425 DOI: 10.1371/journal.pone.0112271] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2014] [Accepted: 10/02/2014] [Indexed: 12/26/2022] Open
Abstract
The herbicides ametryn and clomazone are widely used in sugarcane cultivation, and following microbial degradation are considered as soil and water contaminants. The exposure of microorganisms to pesticides can result in oxidative damage due to an increase in the production of reactive oxygen species (ROS). This study investigated the response of the antioxidant systems of two bacterial strains tolerant to the herbicides ametryn and clomazone. Bacteria were isolated from soil with a long history of ametryn and clomazone application. Comparative analyses based on 16S rRNA gene sequences revealed that strain CC07 is phylogenetically related to Pseudomonas aeruginosa and strain 4C07 to P. fulva. The two bacterial strains were grown for 14 h in the presence of separate and combined herbicides. Lipid peroxidation, reduced glutathione content (GSH) and antioxidant enzymes activities were evaluated. The overall results indicated that strain 4C07 formed an efficient mechanism to maintain the cellular redox balance by producing reactive oxygen species (ROS) and subsequently scavenging ROS in the presence of the herbicides. The growth of bacterium strain 4C07 was inhibited in the presence of clomazone alone, or in combination with ametryn, but increased glutathione reductase (GR) and glutathione S-transferase (GST) activities, and a higher GSH concentration were detected. Meanwhile, reduced superoxide dismutase (SOD), catalase (CAT) and GST activities and a lower concentration of GSH were detected in the bacterium strain CC07, which was able to achieve better growth in the presence of the herbicides. The results suggest that the two bacterial strains tolerate the ametryn and clomazone herbicides with distinctly different responses of the antioxidant systems.
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Affiliation(s)
- Leila Priscila Peters
- Departamento de Genética, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, Brazil
| | - Giselle Carvalho
- Departamento de Genética, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, Brazil
| | - Paula Fabiane Martins
- Departamento de Genética, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, Brazil
| | - Manuella Nóbrega Dourado
- Departamento de Genética, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, Brazil
| | - Milca Bartz Vilhena
- Departamento de Genética, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, Brazil
| | - Marcos Pileggi
- Departamento de Biologia Estrutural, Molecular e Genética, Universidade Estadual de Ponta Grossa, Ponta Grossa, Brazil
| | - Ricardo Antunes Azevedo
- Departamento de Genética, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, Brazil
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Van Hoewyk D. A tale of two toxicities: malformed selenoproteins and oxidative stress both contribute to selenium stress in plants. ANNALS OF BOTANY 2013; 112:965-72. [PMID: 23904445 PMCID: PMC3783228 DOI: 10.1093/aob/mct163] [Citation(s) in RCA: 133] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Accepted: 05/28/2013] [Indexed: 05/06/2023]
Abstract
BACKGROUND Despite selenium's toxicity in plants at higher levels, crops supply most of the essential dietary selenium in humans. In plants, inorganic selenium can be assimilated into selenocysteine, which can replace cysteine in proteins. Selenium toxicity in plants has been attributed to the formation of non-specific selenoproteins. However, this paradigm can be challenged now that there is increasingly abundant evidence suggesting that selenium-induced oxidative stress also contributes to toxicity in plants. SCOPE This Botanical Briefing summarizes the evidence indicating that selenium toxicity in plants is attributable to both the accumulation of non-specific selenoproteins and selenium-induced oxidative stress. Evidence is also presented to substantiate the claim that inadvertent selenocysteine replacement probably impairs or misfolds proteins, which supports the malformed selenoprotein hypothesis. The possible physiological ramifications of selenoproteins and selenium-induced oxidative stress are discussed. CONCLUSIONS Malformed selenoproteins and oxidative stress are two distinct types of stress that drive selenium toxicity in plants and could impact cellular processes in plants that have yet to be thoroughly explored. Although challenging, deciphering whether the extent of selenium toxicity in plants is imparted by selenoproteins or oxidative stress could be helpful in the development of crops with fortified levels of selenium.
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Affiliation(s)
- Doug Van Hoewyk
- Coastal Carolina University, Biology Department, Conway, SC 29526, USA
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Wang YD, Wang X, Ngai SM, Wong YS. Comparative Proteomics Analysis of Selenium Responses in Selenium-Enriched Rice Grains. J Proteome Res 2013; 12:808-20. [DOI: 10.1021/pr300878y] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Yu-Dong Wang
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Xu Wang
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Sai-ming Ngai
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
| | - Yum-shing Wong
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong SAR, China
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Schiavon M, Moro I, Pilon-Smits EAH, Matozzo V, Malagoli M, Dalla Vecchia F. Accumulation of selenium in Ulva sp. and effects on morphology, ultrastructure and antioxidant enzymes and metabolites. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2012; 122-123:222-31. [PMID: 22858602 DOI: 10.1016/j.aquatox.2012.06.014] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Accepted: 06/24/2012] [Indexed: 05/07/2023]
Abstract
The impact of selenium (Se) on Ulva sp., a green macroalga naturally growing in the Venice Lagoon, was investigated. The alga was provided for 10 days with concentrations of selenate (Na(2)SeO(4)) ranging from 0 to 100 μM. Se accumulation in the algal biomass was linearly related to the selenate dose and this relationship was not affected by the high sulfate concentration measured in the seawater. The amount of Se measured in the alga was always relatively low and not hazardous to algal consumers. However, Se induced the formation of hydrogen peroxide (H(2)O(2)) in Ulva sp. and, as a result, the activity of antioxidant enzymes (superoxide dismutase, SOD, and catalase, CAT) and the amount of antioxidant metabolites (phenols, flavonoids and carotenoids) increased, even when selenate was supplied to the macroalga at low concentration (2.5 μM). This indicated that different components of the antioxidant defence system played a pivotal role in overcoming oxidative damage by Se in the macroalga, and explained the lack of morphological and ultrastructural alterations in Ulva sp. exposed to selenate.
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Adki VS, Jadhav JP, Bapat VA. Exploring the phytoremediation potential of cactus (Nopalea cochenillifera Salm. Dyck.) cell cultures for textile dye degradation. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2012; 14:554-569. [PMID: 22908626 DOI: 10.1080/15226514.2011.619226] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Cactaceae Nopalea cochenillifera cell cultures and intact plants (cladodes) transform various toxic textile dyes, including Red HE7B into less phytotoxic, non-hazardous metabolites. The [tentative] pathway analysis demonstrates that Red HE7B is transformed into 3-amino-5-imino-5,8-dihydronaphthalen-2-ol, 2-amino-6-(carboxycarbonyl)-3,4-dihydroxybenzoic acid, 4-aminophenol, and phenoL The significant induction of the activities of intracellular laccase (687%), tyrosinase (219%), azoreductase (144%), and 2,6-dichlorophenolindophenol reductase (167%) indicated the involvement of these enzymes in the transformation pathways of Red HE7B but these enzymes have not been definitively linked to the phytotransformation of this toxic dye. The present foundation work could add another plant candidate for phytoremediation of undesirable products from industry wastes and harmful chemicals.
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Affiliation(s)
- Vinayak S Adki
- Department of Biotechnology, Shivaji University, Vidyanagar, Kolhapur, India
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Monteiro CC, Rolão MB, Franco MR, Peters LP, Cia MC, Capaldi FR, Carvalho RF, Gratão PL, Rossi ML, Martinelli AP, Peres LE, Azevedo RA. Biochemical and histological characterization of tomato mutants. ACTA ACUST UNITED AC 2012; 84:573-85. [DOI: 10.1590/s0001-37652012005000022] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Accepted: 03/09/2012] [Indexed: 12/22/2022]
Abstract
Biochemical responses inherent to antioxidant systems as well morphological and anatomical properties of photomorphogenic, hormonal and developmental tomato mutants were investigated. Compared to the non-mutant Micro-Tom (MT), we observed that the malondialdehyde (MDA) content was enhanced in the diageotropica (dgt) and lutescent (l) mutants, whilst the highest levels of hydrogen peroxide (H2O2) were observed in high pigment 1 (hp1) and aurea (au) mutants. The analyses of antioxidant enzymes revealed that all mutants exhibited reduced catalase (CAT) activity when compared to MT. Guaiacol peroxidase (GPOX) was enhanced in both sitiens (sit) and notabilis (not) mutants, whereas in not mutant there was an increase in ascorbate peroxidase (APX). Based on PAGE analysis, the activities of glutathione reductase (GR) isoforms III, IV, V and VI were increased in l leaves, while the activity of superoxide dismutase (SOD) isoform III was reduced in leaves of sit, epi, Never ripe (Nr) and green flesh (gf) mutants. Microscopic analyses revealed that hp1 and au showed an increase in leaf intercellular spaces, whereas sit exhibited a decrease. The au and hp1 mutants also exhibited a decreased in the number of leaf trichomes. The characterization of these mutants is essential for their future use in plant development and ecophysiology studies, such as abiotic and biotic stresses on the oxidative metabolism.
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Barbosa HS, Arruda SCC, Azevedo RA, Arruda MAZ. New insights on proteomics of transgenic soybean seeds: evaluation of differential expressions of enzymes and proteins. Anal Bioanal Chem 2012; 402:299-314. [PMID: 21947011 DOI: 10.1007/s00216-011-5409-1] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Revised: 08/25/2011] [Accepted: 09/08/2011] [Indexed: 10/17/2022]
Abstract
This work reports the evaluation of differentially expressed enzymes and proteins from transgenic and nontransgenic soybean seeds. Analysis of malondialdehyde, ascorbate peroxidase (EC 1.11.1.11), glutathione reductase (EC 1.6.4.2), and catalase (EC 1.11.1.6) revealed higher levels (29.8, 30.6, 71.4, and 35.3%, respectively) in transgenic seeds than in nontransgenic seeds. Separation of soybean seed proteins was done by two-dimensional polyacrylamide gel electrophoresis, and 192 proteins were identified by matrix-assisted laser desorption/ionization (MALDI) quadrupole time-of-flight (QTOF) mass spectrometry (MS) and electrospray ionization (ESI) QTOF MS. Additionally, the enzyme CP4 EPSPS, involved in the genetic modification, was identified by enzymatic digestions using either trypsin or chymotrypsin and ESI-QTOF MS/MS for identification. From the proteins identified, actin fragment, cytosolic glutamine synthetase, glycinin subunit G1, and glycine-rich RNA-binding protein were shown to be differentially expressed after analysis using the two-dimensional difference gel electrophoresis technique, and applying a regulator factor of 1.5 or greater.
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Affiliation(s)
- Herbert S Barbosa
- Spectrometry, Sample Preparation and Mechanization Group-GEPAM, Institute of Chemistry, University of Campinas-UNICAMP, Campinas, SP, Brazil
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Queirós F, Rodrigues JA, Almeida JM, Almeida DPF, Fidalgo F. Differential responses of the antioxidant defence system and ultrastructure in a salt-adapted potato cell line. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2011; 49:1410-9. [PMID: 22078378 DOI: 10.1016/j.plaphy.2011.09.020] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2011] [Accepted: 09/27/2011] [Indexed: 05/02/2023]
Abstract
Changes in lipid peroxidation and ion content and the possible involvement of the antioxidant system in salt tolerance at the cellular level was studied in a potato (Solanum tuberosum L.) callus line grown on 150 mM NaCl (salt-adapted) and in a non-adapted line exposed to 150 mM NaCl (salt-stressed). Salinity reduced the growth rate and increased lipid peroxidation in salt-stressed line, which remained unaltered in the adapted line. Na⁺ and Cl⁻ content increased due to salinity in both lines, but the adapted line displayed greater K⁺/Na⁺ ratio than the stressed one. Total superoxide dismutase (SOD, EC 1.15.1.1), ascorbate peroxidase (APX, EC 1.11.1.11), and glutathione reductase (GR, EC 1.6.4.2) activities decreased in both salt-exposed lines; catalase (CAT, EC 1.11.1.6) activity did not change in the adapted line, but decreased in the stressed cell line. Salinity caused the suppression of one GR isoform, while the isozyme patterns of SOD, APX, and CAT were not affected. Ascorbate and reduced glutathione increased in both salt-exposed calli lines. α-Tocopherol increased as a result of salt exposure, with higher levels found in adapted calli. Electron microscopy showed that neither the structural integrity of the cells nor membrane structure were affected by salinity, but plastids from adapted cells had higher starch content. The results suggest that the enzymic and non-enzymic components of the antioxidant system are differentially modulated by salt. Different concentrations of antioxidant metabolites are more relevant to the adaptive response to salinity in potato calli than the differences in activity of the antioxidant enzymes.
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Affiliation(s)
- Filipa Queirós
- Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal.
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Ramírez-Benítez JE, Muñoz-Sánchez JA, Becerril-Chi KM, Miranda-Ham MDL, Castro-Concha LA, Hernández-Sotomayor ST. Aluminum induces changes in oxidative burst scavenging enzymes in Coffea arabica L. suspension cells with differential Al tolerance. J Inorg Biochem 2011; 105:1523-8. [DOI: 10.1016/j.jinorgbio.2011.09.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2011] [Revised: 08/30/2011] [Accepted: 09/22/2011] [Indexed: 12/24/2022]
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Adki VS, Shedbalkar UU, Jagtap UB, Jadhav JP, Bapat VA. Detoxification of a carcinogenic paint preservative by Blumea malcolmii Hook cell cultures. JOURNAL OF HAZARDOUS MATERIALS 2011; 191:150-157. [PMID: 21550720 DOI: 10.1016/j.jhazmat.2011.04.055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Revised: 04/13/2011] [Accepted: 04/14/2011] [Indexed: 05/30/2023]
Abstract
Phytoremediation is considered as an effective viable alternative to remediate the contaminated sites, industrially hazardous chemicals and other toxic pollutants. This bioremediation option offers a safe, cheap and eco friendly alternative to existing physical and chemical remediation technologies as well as other biological sources. The wall paint preservatives consist of several harmful and carcinogenic compounds causing serious environmental concerns. In the present study, an actively growing Blumea malcolmii Hook cell suspensions were established successfully on MS+CM (20%) +2,4-D (5 mg l(-1))+Gln (100 mg l(-1))+sucrose (3%) and were used to detoxify a paint preservative Troysan S 89 (a mixture of carbendazim, diuron and ochthilinone). FTIR and UV spectral analytical studies revealed the phytotransformation of Troysan S 89 by Blumea cell suspension cultures. The non-toxic nature of the products formed after phytotransformation was confirmed by phytotoxicity, cytogenotoxicity while non-carcinogenic nature by Ames tests. The novelty of the present study is effective communal degradation of a mixture of three toxicants in Troysan S 89 by cell suspension cultures of Blumea. This work suggested that Blumea cell suspensions might be able to contribute to the wider and safer application of phytoremediation.
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Affiliation(s)
- Vinayak S Adki
- Department of Biotechnology, Shivaji University, Kolhapur, India
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Bottcher A, Nobile PM, Martins PF, Conte FF, Azevedo RA, Mazzafera P. A role for ferritin in the antioxidant system in coffee cell cultures. Biometals 2010; 24:225-37. [PMID: 21046200 DOI: 10.1007/s10534-010-9388-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2010] [Accepted: 10/22/2010] [Indexed: 11/24/2022]
Abstract
Iron (Fe) is an essential nutrient for plants, but it can generate oxidative stress at high concentrations. In this study, Coffea arabica L. cell suspension cultures were exposed to excess Fe (60 and 240 μM) to investigate changes in the gene expression of ferritin and antioxidant enzymes. Iron content accumulated during cell growth, and Western blot analysis showed an increase of ferritin in cells treated with Fe. The expression of two ferritin genes retrieved from the Brazilian coffee EST database was studied. CaFER1, but not CaFER2, transcripts were induced by Fe exposure. Phylogenetic analysis revealed that CaFER1 is not similar to CaFER2 or to any ferritin that has been characterised in detail. The increase in ferritin gene expression was accompanied by an increase in the activity of antioxidant enzymes. Superoxide dismutase, guaiacol peroxidase, catalase, and glutathione reductase activities increased in cells grown in the presence of excess Fe, especially at 60 μM, while the activity of glutathione S-transferase decreased. These data suggest that Fe induces oxidative stress in coffee cell suspension cultures and that ferritin participates in the antioxidant system to protect cells against oxidative damage. Thus, cellular Fe concentrations must be finely regulated to avoid cellular damage most likely caused by increased oxidative stress induced by Fe. However, transcriptional analyses indicate that ferritin genes are differentially controlled, as only CaFER1 expression was responsive to Fe treatment.
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Affiliation(s)
- Alexandra Bottcher
- Departamento de Biologia Vegetal, Instituto de Biologia, CP 6109, Universidade Estadual de Campinas, Campinas, SP, 13083-970, Brazil
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Iannone MF, Rosales EP, Groppa MD, Benavides MP. Reactive oxygen species formation and cell death in catalase-deficient tobacco leaf disks exposed to cadmium. PROTOPLASMA 2010; 245:15-27. [PMID: 20052507 DOI: 10.1007/s00709-009-0097-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2009] [Accepted: 12/03/2009] [Indexed: 05/18/2023]
Abstract
The physiological responses of tobacco (Nicotiana tabacum L.) to oxidative stress induced by cadmium were examined with respect to reactive oxygen species (ROS) formation, antioxidant enzymes activities, and cell death appearance in wild-type SR1 and catalase-deficient CAT1AS plants. Leaf disks treated with 100 or 500 microM CdCl(2) increased Evans blue staining and leakage of electrolytes in SR1 or CAT1AS plants, more pronouncedly in the transgenic cultivar, but without evidence of lipid peroxidation in any of the cultivars compared to controls. Cadmium significantly reduced the NADPH oxidase-dependent O (2)(-) formation in a dose dependent manner in SR1 very strongly at 500 microM (to 5% of the activity in the nontreated SR1 leaf disks). In CAT1AS, the NADPH oxidase activity was constitutively reduced at 50% with respect to that of SR1, but the magnitude of the decay was less prominent in this cultivar, reaching an average of 64% of the C at 21 h, for both Cd concentrations. Hydrogen peroxide formation was only slightly increased in SR1 or CAT1AS leaf disks at 21 h of exposure compared to the respective controls. Cd increased superoxide dismutase activity more than six times at 21 h in CAT1AS, but not in SR1 and reduced catalase activity by 59% at 21 h of treatment only in SR1 plants. Despite that catalase expression was constitutively lower in CATAS1 compared to SR1 nontreated leaf disks, 500 microM CdCl(2) almost doubled it only in CAT1AS at 21 h. The mechanisms underlying Cd-induced cell death were possibly not related exclusively to ROS formation or detoxification in tobacco SR1 or CAT1AS plants.
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Affiliation(s)
- María Florencia Iannone
- Departamento de Química Biológica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Junín 956, 1113, Buenos Aires, Argentina
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Rodrigues VD, Martins PF, Gaziola SA, Azevedo RA, Ottoboni LM. Antioxidant enzyme activity in Acidithiobacillus ferrooxidans LR maintained in contact with chalcopyrite. Process Biochem 2010. [DOI: 10.1016/j.procbio.2010.02.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Akbulut M, Cakir S. The effects of Se phytotoxicity on the antioxidant systems of leaf tissues in barley (Hordeum vulgare L.) seedlings. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2010; 48:160-6. [PMID: 19948409 DOI: 10.1016/j.plaphy.2009.11.001] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2009] [Revised: 11/01/2009] [Accepted: 11/09/2009] [Indexed: 05/07/2023]
Abstract
A hydroponic experiment was carried out in a growth chamber to investigate the impact of Selenium (Se) levels on physiological and biochemical characteristics of a barley cultivar. Membrane lipid peroxidation (LPO), proline accumulation and antioxidant activities of some enzymes of barley seedlings under Se toxicity were investigated. Significant increase in thiobarbituric acid reactive substance (TBARS) content, and a stimulation of catalase (CAT, 1.11.1.6), ascorbate peroxidase (APX, 1.11.1.11), glutathione reductase (GR, 1.6.4.2), and glutathione S-transferase (GST, 2.5.1.18) activities were recorded in barley seedlings subjected to 2, 4, 8, 16 ppm Se. Superoxide dismutase (SOD, EC 1.15.1.1) activity was not altered significantly. Plant height and chlorophyll content of the seedlings were also affected significantly in a dose dependent manner by Se treatment. Considerable amount of proline accumulation was also observed in response to Se treatment. The results indicated that increases in the activities of the antioxidant enzymes were not sufficient to protect cell membrane against Se toxicity.
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Affiliation(s)
- Mikail Akbulut
- Erciyes University, Faculty of Sciences and Arts, Department of Biology, Kayseri, Turkey.
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Doran PM. Application of plant tissue cultures in phytoremediation research: Incentives and limitations. Biotechnol Bioeng 2009; 103:60-76. [DOI: 10.1002/bit.22280] [Citation(s) in RCA: 122] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Tamaoki M, Freeman JL, Marqusè L, Pilon-Smits EAH. New insights into the roles of ethylene and jasmonic acid in the acquisition of selenium resistance in plants. PLANT SIGNALING & BEHAVIOR 2008; 3:865-7. [PMID: 19704524 PMCID: PMC2634399 DOI: 10.4161/psb.3.10.6050] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2008] [Accepted: 04/07/2008] [Indexed: 05/07/2023]
Abstract
In a recent paper, we reported that both ethylene and jasmonic acid (JA) are important for selenium (Se) resistance in Arabidopsis.1 Elevated levels of reactive oxygen species were associated with ethylene and JA production in a Se-resistant Arabidopsis ecotype. Here, we further discuss the functions of these phytohormones, and their possible interactions, in plant Se resistance and -accumulation, placing our data in a broader perspective of other recently published papers.
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Affiliation(s)
- Masanori Tamaoki
- Biology Department; Colorado State University; Environmental Biology Division; National Institute for Environmental Studies; Graduate School of Life and Environmental Sciences; University of Tsukuba; Tsukuba, Ibaraki Japan; UMR de Biochimie et Physiologie Moléculaire des Plantes (B & PMP); Centre National de la Recherche Scientifique; Université Montpellier; Montpellier France
| | - JL Freeman
- Biology Department; Colorado State University; Environmental Biology Division; National Institute for Environmental Studies; Graduate School of Life and Environmental Sciences; University of Tsukuba; Tsukuba, Ibaraki Japan; UMR de Biochimie et Physiologie Moléculaire des Plantes (B & PMP); Centre National de la Recherche Scientifique; Université Montpellier; Montpellier France
| | - L Marqusè
- Biology Department; Colorado State University; Environmental Biology Division; National Institute for Environmental Studies; Graduate School of Life and Environmental Sciences; University of Tsukuba; Tsukuba, Ibaraki Japan; UMR de Biochimie et Physiologie Moléculaire des Plantes (B & PMP); Centre National de la Recherche Scientifique; Université Montpellier; Montpellier France
| | - EAH Pilon-Smits
- Biology Department; Colorado State University; Environmental Biology Division; National Institute for Environmental Studies; Graduate School of Life and Environmental Sciences; University of Tsukuba; Tsukuba, Ibaraki Japan; UMR de Biochimie et Physiologie Moléculaire des Plantes (B & PMP); Centre National de la Recherche Scientifique; Université Montpellier; Montpellier France
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Tamaoki M, Freeman JL, Pilon-Smits EAH. Cooperative ethylene and jasmonic acid signaling regulates selenite resistance in Arabidopsis. PLANT PHYSIOLOGY 2008; 146:1219-30. [PMID: 18178671 PMCID: PMC2259059 DOI: 10.1104/pp.107.110742] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2007] [Accepted: 12/22/2007] [Indexed: 05/18/2023]
Abstract
Selenium (Se) is an essential element for many organisms, but excess Se is toxic. To better understand plant Se toxicity and resistance mechanisms, we compared the physiological and molecular responses of two Arabidopsis (Arabidopsis thaliana) accessions, Columbia (Col)-0 and Wassilewskija (Ws)-2, to selenite treatment. Measurement of root length Se tolerance index demonstrated a clear difference between selenite-resistant Col-0 and selenite-sensitive Ws-2. Macroarray analysis showed more pronounced selenite-induced increases in mRNA levels of ethylene- or jasmonic acid (JA)-biosynthesis and -inducible genes in Col-0 than in Ws-2. Indeed, Col-0 exhibited higher levels of ethylene and JA. The selenite-sensitive phenotype of Ws-2 was attenuated by treatment with ethylene precursor or methyl jasmonate (MeJA). Conversely, the selenite resistance of Col-0 was reduced in mutants impaired in ethylene or JA biosynthesis or signaling. Genes encoding sulfur (S) transporters and S assimilation enzymes were up-regulated by selenite in Col-0 but not Ws-2. Accordingly, Col-0 contained higher levels of total S and Se and of nonprotein thiols than Ws-2. Glutathione redox status was reduced by selenite in Ws-2 but not in Col-0. Furthermore, the generation of reactive oxygen species by selenite was higher in Col-0 than in Ws-2. Together, these results indicate that JA and ethylene play important roles in Se resistance in Arabidopsis. Reactive oxygen species may also have a signaling role, and the resistance mechanism appears to involve enhanced S uptake and reduction.
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Affiliation(s)
- Masanori Tamaoki
- Biology Department, Colorado State University, Fort Collins, CO 80523, USA.
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