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Mohammed AE, Pawelzik E, Nour MM, Alotaibi MO, Abdelgawad H, Saleh AM. Mycorrhized wheat and bean plants tolerate bismuth contaminated soil via improved metal detoxification and antioxidant defense systems. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 205:108148. [PMID: 37977026 DOI: 10.1016/j.plaphy.2023.108148] [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: 06/03/2023] [Revised: 09/09/2023] [Accepted: 10/26/2023] [Indexed: 11/19/2023]
Abstract
Contamination of agricultural fields with bismuth (Bi) reduces crop yield and quality. Arbuscular mycorrhizal fungi (AMF) are known to enhance plant growth and crop production, even under stressful conditions such as soil contamination with heavy metals. The objective of this study was to investigate the effect of AMF on the mitigation of Bi-phytotoxicity in wheat (Triticum aestivum) and beans (Phaseolus vulgaris) and to provide a comprehensive evaluation of the physiological and biochemical basis for the growth and development of AMF-induced plants under Bi stress conditions. Wheat and bean were treated by Bi and AMF individually and in combination. Then the physiological and biochemical responses in the shoot and roots of the two crop species were studied. Evident retardations in plant growth and key photosynthesis-related parameters and accumulation of MDA, H2O2, as markers of oxidative stress, were observed in plants subjected to Bi. AMF colonization reduced the uptake and translocation of Bi in the plant organs by enhancing the exudation of polyphenols and organic acids into the rhizospheric soil. Mycorrhized wheat and bean plants were able to attenuate the effects of Bi by improving metal detoxification (phytochelatins, metallothionein, total glutathione, and glutathione-S-transferase activity) and antioxidant defense systems (both enzymatic and non-enzymatic) and maintaining C assimilation and nutrient status. The current results suggest the manipulation of AMF as a powerful approach to alleviate the phytotoxicity of Bi in legumes and grasses.
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Affiliation(s)
- Afrah E Mohammed
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia.
| | - Elke Pawelzik
- Division Quality of Plant Products, Department of Crop Science, Faculty of Agricultural Sciences, University of Göttingen, Carl-Sprengel-Weg 1, 37075, Göttingen, Germany.
| | - Mudawi M Nour
- Nurseries Department, Habitat Regeneration & Landscaping, Wildlife and Natural Heritage, Royal Commission for AlUla Province, Saudi Arabia.
| | - Modhi O Alotaibi
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia.
| | - Hamada Abdelgawad
- Laboratory for Integrated Molecular Plant Physiology Research (IMPRES), Department of Biology, University of Antwerp, Antwerp, Belgium; Department of Botany and Microbiology, Faculty of Science, Beni-Suef University, 62521, Beni-Suef, Egypt.
| | - Ahmed M Saleh
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza, 12613, Egypt.
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Khamis G, Reyad AM, Alsherif EA, Madany MMY, Korany SM, Asard H, AbdElgawad H. Elevated CO 2 reduced antimony toxicity in wheat plants by improving photosynthesis, soil microbial content, minerals, and redox status. FRONTIERS IN PLANT SCIENCE 2023; 14:1244019. [PMID: 37780499 PMCID: PMC10534994 DOI: 10.3389/fpls.2023.1244019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 08/14/2023] [Indexed: 10/03/2023]
Abstract
Introduction Antimony (Sb), a common rare heavy metal, is naturally present in soils at low concentrations. However, it is increasingly used in industrial applications, which in turn, leads to an increased release into the environment, exerting a detrimental impact on plant growth. Thus, it is important to study Sb effects on plants under the current and future CO2 (eCO2). Methods To this end, high Sb concentrations (1500 mg/kg soil) effects under ambient (420 ppm) and eCO2 (710 ppm) on wheat growth, physiology (photosynthesis reactions) and biochemistry (minerals contents, redox state), were studied and soil microbial were evaluated. Results and discussion Our results showed that Sb uptake significantly decreased wheat growth by 42%. This reduction could be explained by the inhibition in photosynthesis rate, Rubisco activity, and photosynthetic pigments (Cha and Chb), by 35%, 44%, and 51%, respectively. Sb significantly reduced total bacterial and fungal count and increased phenolic and organic acids levels in the soil to decrease Sb uptake. Moreover, it induced oxidative markers, as indicated by the increased levels of H2O2 and MDA (1.96 and 2.8-fold compared to the control condition, respectively). To reduce this damage, antioxidant capacity (TAC), CAT, POX, and SOD enzymes activity were increased by 1.61, 2.2, 2.87, and 1.86-fold, respectively. In contrast, eCO2 mitigated growth inhibition in Sb-treated wheat. eCO2 and Sb coapplication mitigated the Sb harmful effect on growth by reducing Sb uptake and improving photosynthesis and Rubisco enzyme activity by 0.58, 1.57, and 1.4-fold compared to the corresponding Sb treatments, respectively. To reduce Sb uptake and improve mineral availability for plants, a high accumulation of phenolics level and organic acids in the soil was observed. eCO2 reduces Sb-induced oxidative damage by improving redox status. In conclusion, our study has provided valuable insights into the physiological and biochemical bases underlie the Sb-stress mitigating of eCO2 conditions. Furthermore, this is important step to define strategies to prevent its adverse effects of Sb on plants in the future.
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Affiliation(s)
- Galal Khamis
- Department of Laser Applications in Metrology, Photochemistry, and Agriculture (LAMPA), National Institute of Laser Enhanced Sciences, Cairo University, Giza, Egypt
| | - Ahmed Mohamed Reyad
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Emad A. Alsherif
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Mahmoud M. Y. Madany
- Biology Department, College of Science, Taibah University, Al-Madinah Al-Munawarah, Saudi Arabia
| | - Shereen Magdy Korany
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Han Asard
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerp, Belgium
| | - Hamada AbdElgawad
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerp, Belgium
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Albqmi M, Selim S, Al-Sanea MM, Alnusaire TS, Almuhayawi MS, Jaouni SKA, Hussein S, Warrad M, Sofy MR, AbdElgawad H. Interactive Effect of Arbuscular Mycorrhizal Fungi (AMF) and Olive Solid Waste on Wheat under Arsenite Toxicity. PLANTS (BASEL, SWITZERLAND) 2023; 12:plants12051100. [PMID: 36903959 PMCID: PMC10005190 DOI: 10.3390/plants12051100] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/20/2023] [Accepted: 02/26/2023] [Indexed: 06/12/2023]
Abstract
Heavy metal such as arsenite (AsIII) is a threat worldwide. Thus, to mitigate AsIII toxicity on plants, we investigated the interactive effect of olive solid waste (OSW) and arbuscular mycorrhizal fungi (AMF) on wheat plants under AsIII stress. To this end, wheat seeds were grown in soils treated with OSW (4% w/w), AMF-inoculation, and/or AsIII treated soil (100 mg/kg soil). AMF colonization is reduced by AsIII but to a lesser extent under AsIII + OSW. AMF and OSW interactive effects also improved soil fertility and increased wheat plants' growth, particularly under AsIII stress. The interactions between OSW and AMF treatments reduced AsIII-induced H2O2 accumulation. Less H2O2 production consequently reduced AsIII-related oxidative damages i.e., lipid peroxidation (malondialdehyde, MDA) (58%), compared to As stress. This can be explained by the increase in wheat's antioxidant defense system. OSW and AMF increased total antioxidant content, phenol, flavonoids, and α-tocopherol by approximately 34%, 63%, 118%, 232%, and 93%, respectively, compared to As stress. The combined effect also significantly induced anthocyanins accumulation. The combination of OSW+AMF improved antioxidants enzymes activity, where superoxide dismutase (SOD, catalase (CAT), peroxidase (POX), glutathione reductase (GR), and glutathione peroxidase (GPX) were increased by 98%, 121%, 105%, 129%, and 110.29%, respectively, compared to AsIII stress. This can be explained by induced anthocyanin percussors phenylalanine, cinamic acid and naringenin, and biosynthesic enzymes (phenylalanine aminolayse (PAL) and chalcone synthase (CHS)). Overall, this study suggested the effectiveness of OSW and AMF as a promising approach to mitigate AsIII toxicity on wheat growth, physiology, and biochemistry.
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Affiliation(s)
- Mha Albqmi
- Department of Chemistry, College of Science and Arts, Jouf University, Al Qurayyat 77447, Saudi Arabia
- Olive Research Center, Jouf University, Sakaka 72341, Saudi Arabia
| | - Samy Selim
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka 72388, Saudi Arabia
| | - Mohammad M. Al-Sanea
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia
| | - Taghreed S. Alnusaire
- Department of Biology, College of Science, Jouf University, Sakaka 72341, Saudi Arabia
| | - Mohammed S. Almuhayawi
- Department of Medical Microbiology and Parasitology, Faculty of Medicine, King Abdulaziz University Hospital, Jeddah 21589, Saudi Arabia
| | - Soad K. Al Jaouni
- Department of Hematology and Oncology, Yousef Abdulatif Jameel Scientific Chair of Prophetic Medicine Application, Faculty of Medicine, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Shaimaa Hussein
- Department of Pharmacology, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia
| | - Mona Warrad
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences at Al-Quriat, Jouf University, Al-Qurayyat 77425, Saudi Arabia
| | - Mahmoud R. Sofy
- Botany and Microbiology Department, Faculty of Science, Al-Azhar University, Cairo 11884, Egypt
| | - Hamada AbdElgawad
- Department of Botany and Microbiology, Faculty of Science, Beni-Suef University, Beni-Suef 62521, Egypt
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Saleh AM, Abu El-Soud WM, Alotaibi MO, Beemster GTS, Mohammed AE, AbdElgawad H. Chitosan nanoparticles support the impact of arbuscular mycorrhizae fungi on growth and sugar metabolism of wheat crop. Int J Biol Macromol 2023; 235:123806. [PMID: 36841386 DOI: 10.1016/j.ijbiomac.2023.123806] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 02/16/2023] [Accepted: 02/18/2023] [Indexed: 02/27/2023]
Abstract
Arbuscular mycorrhizae fungi (AMF) symbiosis is an indispensable approach in sustainable agriculture. AMF-plant association is likely to be enhanced by the nanoparticle's application. Herein, the impact of chitosan nanoparticles (CSNPs) on the mycorrhizal colonization in wheat has been investigated. The provoked changes in wheat growth, physiology and metabolism were assessed. CSNPs treatment improved AMF colonization (52 %) by inducing the levels of auxins and strigolactones in roots by 32 and 21 %, respectively besides flavonoids exudation into the rhizosphere (9 %). Such supporting action of CSNPs was associated with improved plant biomass production (21 %) compared to AMF treatment. Both treatments synergistically enhanced the photochemical efficiency of photosystem II and stomatal conductance, therefore the photosynthetic rate was increased. The combined application of CSNPs and AMF enhanced accumulation of glucose, fructose, sucrose, and starch (12, 22, 31 and 13 %, respectively), as well as the activities of sucrose-p-synthase, invertases and starch synthase compared to AMF treatment. The synchronous application of CSNPs and AMF promoted the levels of polyphenols, carotenoids, and tocopherols therefore, improved antioxidant capacity (33 %), in the roots. CSNPs can be applied as an efficient biofertilization strategies to enhance plant growth and fitness, beside improvement of health promoting compounds in wheat.
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Affiliation(s)
- Ahmed M Saleh
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza 12613, Egypt; Biology Department, Faculty of Science at Yanbu, Taibah University, King Khalid Rd., Al Amoedi, Yanbu El-Bahr, 46423, Saudi Arabia
| | - Walid M Abu El-Soud
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Modhi O Alotaibi
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia
| | - Gerrit T S Beemster
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerp, Belgium
| | - Afrah E Mohammed
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia.
| | - Hamada AbdElgawad
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerp, Belgium; Department of Botany and Microbiology, Faculty of Science, Beni-Suef University, 62521 Beni-Suef, Egypt
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Ofoe R, Thomas RH, Asiedu SK, Wang-Pruski G, Fofana B, Abbey L. Aluminum in plant: Benefits, toxicity and tolerance mechanisms. FRONTIERS IN PLANT SCIENCE 2023; 13:1085998. [PMID: 36714730 PMCID: PMC9880555 DOI: 10.3389/fpls.2022.1085998] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 12/23/2022] [Indexed: 06/18/2023]
Abstract
Aluminum (Al) is the third most ubiquitous metal in the earth's crust. A decrease in soil pH below 5 increases its solubility and availability. However, its impact on plants depends largely on concentration, exposure time, plant species, developmental age, and growing conditions. Although Al can be beneficial to plants by stimulating growth and mitigating biotic and abiotic stresses, it remains unknown how Al mediates these effects since its biological significance in cellular systems is still unidentified. Al is considered a major limiting factor restricting plant growth and productivity in acidic soils. It instigates a series of phytotoxic symptoms in several Al-sensitive crops with inhibition of root growth and restriction of water and nutrient uptake as the obvious symptoms. This review explores advances in Al benefits, toxicity and tolerance mechanisms employed by plants on acidic soils. These insights will provide directions and future prospects for potential crop improvement.
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Affiliation(s)
- Raphael Ofoe
- Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Bible Hill, NS, Canada
| | - Raymond H. Thomas
- School of Science and the Environment, Memorial University of Newfoundland, Grenfell Campus, Corner Brook, NL, Canada
| | - Samuel K. Asiedu
- Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Bible Hill, NS, Canada
| | - Gefu Wang-Pruski
- Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Bible Hill, NS, Canada
| | - Bourlaye Fofana
- Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Bible Hill, NS, Canada
- Charlottetown Research and Development Centre, Agriculture and Agri-Food Canada, Charlottetown, PE, Canada
| | - Lord Abbey
- Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Bible Hill, NS, Canada
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de Sousa A, AbdElgawad H, Fidalgo F, Teixeira J, Matos M, Tamagnini P, Fernandes R, Figueiredo F, Azenha M, Teles LO, Korany SM, Alsherif EA, Selim S, Beemster GTS, Asard H. Subcellular compartmentalization of aluminum reduced its hazardous impact on rye photosynthesis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 315:120313. [PMID: 36228849 DOI: 10.1016/j.envpol.2022.120313] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 09/25/2022] [Accepted: 09/26/2022] [Indexed: 06/16/2023]
Abstract
Aluminum (Al) toxicity limits crops growth and production in acidic soils. Compared to roots, less is known about the toxic effects of Al in leaves. Al subcellular compartmentalization is also largely unknown. Using rye (Secale cereale L.) Beira (more tolerant) and RioDeva (more sensitive to Al) genotypes, we evaluated the patterns of Al accumulation in leaf cell organelles and the photosynthetic and metabolic changes to cope with Al toxicity. The tolerant genotype accumulated less Al in all organelles, except the vacuoles. This suggests that Al compartmentalization plays a role in Al tolerance of Beira genotype. PSII efficiency, stomatal conductance, pigment biosynthesis, and photosynthesis metabolism were less affected in the tolerant genotype. In the Calvin cycle, carboxylation was compromised by Al exposure in the tolerant genotype. Other Calvin cycle-related enzymes, phoshoglycerate kinase (PGK), glyceraldehyde 3-phosphate dehydrogenase (GAPDH), triose-phosphate isomerase (TPI), and fructose 1,6-bisphosphatase (FBPase) activities decreased in the sensitive line after 48 h of Al exposure. Consequentially, carbohydrate and organic acid metabolism were affected in a genotype-specific manner, where sugar levels increased only in the tolerant genotype. In conclusion, Al transport to the leaf and compartmentalization in the vacuoles tolerant genotype's leaf cells provide complementary mechanisms of Al tolerance, protecting the photosynthetic apparatus and thereby sustaining growth.
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Affiliation(s)
- Alexandra de Sousa
- Plant Stress Lab - GreenUPorto Sustainable Agrifood Production Research Center, Biology Department, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007, Porto, Portugal; Laboratory for Integrated Molecular Plant Physiology Research (IMPRES), Department of Biology, University of Antwerp, B-2020, Antwerp, Belgium
| | - Hamada AbdElgawad
- Laboratory for Integrated Molecular Plant Physiology Research (IMPRES), Department of Biology, University of Antwerp, B-2020, Antwerp, Belgium; Botany and Microbiology Department, Faculty of Science, Beni-Suef University, 62511, Beni-Suef, Egypt.
| | - Fernanda Fidalgo
- Plant Stress Lab - GreenUPorto Sustainable Agrifood Production Research Center, Biology Department, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007, Porto, Portugal
| | - Jorge Teixeira
- Plant Stress Lab - GreenUPorto Sustainable Agrifood Production Research Center, Biology Department, Faculty of Sciences, University of Porto, Rua do Campo Alegre s/n, 4169-007, Porto, Portugal
| | - Manuela Matos
- Biosystems & Integrative Sciences Institute (BioISI), Department of Genetics and Biotechnology, UTAD- University of Trás-os-Montes e Alto-Douro, Quinta dos Prados, 5000-801, Vila Real, Portugal
| | - Paula Tamagnini
- HEMS-Histology and Electron Microscopy Service, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal
| | - Rui Fernandes
- HEMS-Histology and Electron Microscopy Service, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal
| | - Francisco Figueiredo
- HEMS-Histology and Electron Microscopy Service, Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal
| | - Manuel Azenha
- IQ-UP, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Luís Oliva Teles
- CIIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Rua dos Bragas n° 289, Porto, 4050-123, Portugal
| | - Shereen Magdy Korany
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia
| | - Emad A Alsherif
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, 62511, Beni-Suef, Egypt; Biology Department, College of Science and Arts at Khulis, University of Jeddah, Jeddah, 21959, Saudi Arabia
| | - Samy Selim
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka, 72341, Saudi Arabia
| | - Gerrit T S Beemster
- Laboratory for Integrated Molecular Plant Physiology Research (IMPRES), Department of Biology, University of Antwerp, B-2020, Antwerp, Belgium
| | - Han Asard
- Laboratory for Integrated Molecular Plant Physiology Research (IMPRES), Department of Biology, University of Antwerp, B-2020, Antwerp, Belgium
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AbdElgawad H, Sheteiwy MS, Saleh AM, Mohammed AE, Alotaibi MO, Beemster GTS, Madany MMY, van Dijk JR. Elevated CO 2 differentially mitigates chromium (VI) toxicity in two rice cultivars by modulating mineral homeostasis and improving redox status. CHEMOSPHERE 2022; 307:135880. [PMID: 35964713 DOI: 10.1016/j.chemosphere.2022.135880] [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: 04/15/2022] [Revised: 07/05/2022] [Accepted: 07/26/2022] [Indexed: 06/15/2023]
Abstract
Chromium (Cr) contamination reduces crop productivity worldwide. On the other hand, the expected increase in the future CO2 levels (eCO2) would improve plant growth under diverse growth conditions. However, the synergetic effect of eCO2 has not been investigated at both physiological and biochemical levels in Cr-contaminated soil. This study aims to analyze the mitigating effect of eCO2 on Cr VI phytotoxicity in two rice cultivars (Giza 181 and Sakha 106). Plants are exposed to different Cr concentrations (0, 200 and 400 mg Cr/kg Soil) at ambient (aCO2) and eCO2 (410 and 620 ppm, respectively). Unlike the stress parameters (MDA, H2O2 and protein oxidation), growth and photosynthetic reactions significantly dropped with increasing Cr concentration. However, in eCO2 conditions, plants were able to mitigate the Cr stress by inducing antioxidants as well as higher concentrations of phytochelatins to detoxify Cr. Notably, the expression levels of the genes involved in mineral nutrition i.e., OsNRAMP1, OsRT1, OsHMA3, OsLCT1 and iron chelate reductase were upregulated in Cr-stressed Giza 181 plants grown under eCO2. Mainly in Sakha 106, eCO2 induced ascorbate-glutathione (ASC/GSH)-mediated antioxidative defense system. The present study brings the first ever comprehensive assessment of how future eCO2 differentially mitigated Cr toxicity in rice.
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Affiliation(s)
- Hamada AbdElgawad
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerp, Belgium; Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, 62511, Egypt
| | - Mohamed S Sheteiwy
- Department of Agronomy, Faculty of Agriculture, Mansoura University, Mansoura, 35516, Egypt.
| | - Ahmed M Saleh
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Afrah E Mohammed
- Department of Biology, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia.
| | - Modhi O Alotaibi
- Department of Biology, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia
| | - Gerrit T S Beemster
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerp, Belgium
| | - Mahmoud M Y Madany
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Jesper R van Dijk
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerp, Belgium; Geobiology, Department of Biology, University of Antwerp, Antwerp, Universiteitsplein 1, Wilrijk, B-2610, Belgium
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AbdElgawad H, El-Sawah AM, Mohammed AE, Alotaibi MO, Yehia RS, Selim S, Saleh AM, Beemster GTS, Sheteiwy MS. Increasing atmospheric CO 2 differentially supports arsenite stress mitigating impact of arbuscular mycorrhizal fungi in wheat and soybean plants. CHEMOSPHERE 2022; 296:134044. [PMID: 35202662 DOI: 10.1016/j.chemosphere.2022.134044] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 02/15/2022] [Accepted: 02/16/2022] [Indexed: 06/14/2023]
Abstract
Arbuscular mycorrhizal fungi (AMF) are beneficial for the plant growth under heavy metal stress. Such beneficial effect is improved by elevated CO2 (eCO2). However, the mechanisms by which eCO2 improves AMF symbiotic associations under arsenite (AsIII) toxicity are hardly studied. Herein, we compared these regulatory mechanisms in species from two agronomical important plant families - grasses (wheat) and legumes (soybean). AsIII decreased plant growth (i.e., 53.75 and 60.29% of wheat and soybean, respectively) and photosynthesis. It also increased photorespiration and oxidative injury in both species, but soybean was more sensitive to oxidative stress as indicated by higher H2O2 accumulation and oxidation of protein and lipid. eCO2 significantly improved AMF colonization by increasing auxin levels, which induced high carotenoid cleavage dioxygenase (CCDs) activity, particularly in soybean roots. The improved sugar metabolism in plant shoots by co-application of eCO2 and AsIII allocated more sugars to roots sequentially. Sugar accumulation in plant roots is further induced by AMF, resulting in more C skeletons to produce organic acids, which are effectively exudated into the soil to reduce AsIII uptake. Exposure to eCO2 reduced oxidative damage and this mitigation was stronger in soybean. This could be attributed to a greater reduction in photorespiration as well as a stronger antioxidant and detoxification defence systems. The grass/legume-specificity was supported by principal component analysis, which revealed that soybean was more affected by AsIII stress and more responsive to AMF and eCO2. This study provided a mechanistic understanding of the impact of AMF, eCO2 and their interaction on As-stressed grass and legume plants, allowing better practical strategies to mitigate AsIII phytotoxicity.
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Affiliation(s)
- Hamada AbdElgawad
- Laboratory for Integrated Molecular Plant Physiology Research (IMPRES), Department of Biology, University of Antwerp, Antwerp, Belgium; Department of Botany and Microbiology, Faculty of Science, Beni-Suef University, 62521, Beni-Suef, Egypt
| | - Ahmed M El-Sawah
- Department of Agricultural Microbiology, Faculty of Agriculture, Mansoura University, Mansoura, 35516, Egypt
| | - Afrah E Mohammed
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia.
| | - Modhi O Alotaibi
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia
| | - Ramy S Yehia
- Department of Biological Sciences, College of Science, King Faisal University, Al-Ahsa, 31982, Saudi Arabia; Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Samy Selim
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka 72341, Saudi Arabia
| | - Ahmed M Saleh
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Gerrit T S Beemster
- Laboratory for Integrated Molecular Plant Physiology Research (IMPRES), Department of Biology, University of Antwerp, Antwerp, Belgium
| | - Mohamed S Sheteiwy
- Department of Agronomy, Faculty of Agriculture, Mansoura University, Mansoura, 35516, Egypt.
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Ma L, Yang S. Growth and physiological response of Kandelia obovata and Bruguiera sexangula seedlings to aluminum stress. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:43251-43266. [PMID: 35091926 PMCID: PMC9148292 DOI: 10.1007/s11356-021-17926-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 11/30/2021] [Indexed: 06/14/2023]
Abstract
The role of mangroves as a biogeochemical buffer for heavy metal pollutants in coastal wetlands has been demonstrated, but knowledge gaps still exist on the tolerant capacity of mangroves to aluminum (Al). This study assessed the growth and physiological response of viviparous mangroves Kandelia obovata and Bruguiera sexangula to Al stress. The two mangrove seedlings were treated with AlCl3 at concentrations of 0 (as control) to 100 mmol L-1, and the impact of Al on their growth and antioxidant parameters were determined. Additionally, the accumulation and translocation of metal elements were estimated in B. sexangula seedlings under relative long-term Al stress. K. obovata appeared to survive with a tolerance potential of 10 mmol L-1 AlCl3, whereas B. sexangula had a higher tolerant ability of 50 mmol L-1 AlCl3. Both root elongation and seedling growth were inhibited by Al stress. The exposure to 25-100 mmol L-1 AlCl3 induced increases in membrane lipid peroxidation and osmoprotectant molecule (proline) in mangrove seedlings. Both mangrove seedlings revealed significant changes in antioxidant enzyme activities that were attributed to Al stress-induced oxidative damages. The activities of superoxide dismutase, catalase, peroxidase, and/or ascorbate peroxidase were differently impacted by the treatment time (7 days for short term versus 60 days for long term) and AlCl3 concentrations in K. obovata and B. sexangula seedlings. For B. sexangula seedlings, Al accumulation was in an order root > leaf > stem, whereas the translocation of metal elements in the aboveground tissues (leaf and stem) was differently impacted by Al stress. In conclusion, this study provides insights into different Al-tolerant abilities operated in two mangrove species that are widespread in coastal wetlands of China.
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Affiliation(s)
- Li Ma
- Key Laboratory of the Coastal and Wetland Ecosystem (Ministry of Education), College of the Environment and Ecology, Xiamen University, Xiamen, China
- Department of Chemical Engineering, Chengde Petroleum College, Chengde, China
| | - Shengchang Yang
- Key Laboratory of the Coastal and Wetland Ecosystem (Ministry of Education), College of the Environment and Ecology, Xiamen University, Xiamen, China.
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10
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AbdElgawad H, de Soua A, Alotaibi MO, Mohammed AE, Schoenaers S, Selim S, Saleh AM. The differential tolerance of C3 and C4 cereals to aluminum toxicity is faded under future CO 2 climate. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 169:249-258. [PMID: 34808467 DOI: 10.1016/j.plaphy.2021.11.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 11/04/2021] [Accepted: 11/11/2021] [Indexed: 06/13/2023]
Abstract
Industrial activities have led to a gradual and global increase in soil aluminum (Al) and atmospheric CO2 concentrations. Al bioavailability strongly depends on the soil pH, which in turn is affected by atmospheric CO2 levels. In spite of the concurrent impact which Al and elevated CO2 (eCO2) could have on plants, their interaction and how it might affect the growth of economically important crop species has not been investigated. Here, we have investigated the combined impact of soil Al and eCO2 exposure on key C3 (wheat, oat) and C4 (maize, sorghum) crops, at the physiological and biochemical level. Compared to C3 plants, C4 plants accumulated less Al by stimulating soil Al retention through exudation of root organic acids. Consequently, Al-exposed C4 plants maintained photosynthetic performance and anti-oxidative capacity. Exposure to eCO2 reduced the stress responses of C3 and C4 crops to Al exposure. Elevated CO2 decreased Al accumulation and oxidative damage in all cereals, and ameliorated C3 plant growth. This was reflected on the biochemical level, where eCO2 inhibited ROS production and restored RuBisCo activity in C3 crops only. Overall, our data suggest that, compared to C3 crops, C4 cereals are more tolerant to soil Al exposure under current ambient CO2 (aCO2) levels whereas future eCO2 levels might stimulate Al tolerance in C3 crops.
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Affiliation(s)
- Hamada AbdElgawad
- Laboratory for Integrated Molecular Plant Physiology Research (IMPRES), Department of Biology, University of Antwerp, B-2020, Antwerp, Belgium; Department of Botany and Microbiology, Faculty of Science, Beni-Suef University, 62521, Beni-Suef, Egypt.
| | - Alexandra de Soua
- Laboratory for Integrated Molecular Plant Physiology Research (IMPRES), Department of Biology, University of Antwerp, B-2020, Antwerp, Belgium
| | - Modhi O Alotaibi
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Afrah E Mohammed
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Sébastjen Schoenaers
- Laboratory for Integrated Molecular Plant Physiology Research (IMPRES), Department of Biology, University of Antwerp, B-2020, Antwerp, Belgium
| | - Samy Selim
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka 72341, Saudi Arabia
| | - Ahmed M Saleh
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza, 12613, Egypt.
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11
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Proteolytic and Structural Changes in Rye and Triticale Roots under Aluminum Stress. Cells 2021; 10:cells10113046. [PMID: 34831267 PMCID: PMC8618286 DOI: 10.3390/cells10113046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 10/28/2021] [Accepted: 11/04/2021] [Indexed: 01/04/2023] Open
Abstract
Proteolysis and structural adjustments are significant for defense against heavy metals. The purpose of this study was to evaluate whether the Al3+ stress alters protease activity and the anatomy of cereale roots. Azocaseinolytic and gelatinolytic measurements, transcript-level analysis of phytocystatins, and observations under microscopes were performed on the roots of Al3+-tolerant rye and tolerant and sensitive triticales exposed to Al3+. In rye and triticales, the azocaseinolytic activity was higher in treated roots. The gelatinolytic activity in the roots of rye was enhanced between 12 and 24 h in treated roots, and decreased at 48 h. The gelatinolytic activity in treated roots of tolerant triticale was the highest at 24 h and the lowest at 12 h, whereas in treated roots of sensitive triticale it was lowest at 12 h but was enhanced at 24 and 48 h. These changes were accompanied by increased transcript levels of phytocystatins in rye and triticale-treated roots. Light microscope analysis of rye roots revealed disintegration of rhizodermis in treated roots at 48 h and indicated the involvement of root border cells in rye defense against Al3+. The ultrastructural analysis showed vacuoles containing electron-dense precipitates. We postulate that proteolytic-antiproteolytic balance and structural acclimation reinforce the fine-tuning to Al3+.
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12
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AbdElgawad H, Schoenaers S, Zinta G, Hassan YM, Abdel-Mawgoud M, Alkhalifah DHM, Hozzein WN, Asard H, Abuelsoud W. Soil arsenic toxicity differentially impacts C3 (barley) and C4 (maize) crops under future climate atmospheric CO 2. JOURNAL OF HAZARDOUS MATERIALS 2021; 414:125331. [PMID: 34030395 DOI: 10.1016/j.jhazmat.2021.125331] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 12/14/2020] [Accepted: 02/01/2021] [Indexed: 05/13/2023]
Abstract
Soil arsenic (As) contamination limits global agricultural productivity. Anthropogenic emissions are causing atmospheric CO2 levels to rise. Elevated CO2 (eCO2) boosts plant growth both under optimal and suboptimal growth conditions. However, the crop-specific interaction between eCO2 and soil arsenic exposure has not been investigated at the whole plant, physiological and biochemical level. Here, we tested the effects of eCO2 (620 ppm) and soil As exposure (mild and severe treatments, 25 and 100 mg As/Kg soil) on growth, photosynthesis and redox homeostasis in barley (C3) and maize (C4). Compared to maize, barley was more susceptible to soil As exposure at ambient CO2 levels. Barley plants accumulated more As, particularly in roots. As accumulation inhibited plant growth and induced oxidative damage in a species-specific manner. As-exposed barley experienced severe oxidative stress as illustrated by high H2O2 and protein oxidation levels. Interestingly, eCO2 differentially mitigated As-induced stress in barley and maize. In barley, eCO2 exposure reduced photorespiration, H2O2 production, and lipid/protein oxidation. In maize eCO2 exposure led to an upregulation of the ascorbate-glutathione (ASC/GSH)-mediated antioxidative defense system. Combined, this work highlights how ambient and future eCO2 levels differentially affect the growth, physiology and biochemistry of barley and maize crops exposed to soil As pollution.
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Affiliation(s)
- Hamada AbdElgawad
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerp, Belgium; Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Sébastjen Schoenaers
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerp, Belgium
| | - Gaurav Zinta
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerp, Belgium; Academy of Scientific and Innovative Research (AcSIR), CSIR-HRDC Campus, Ghaziabad, Uttar Pradesh, India; Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, India.
| | - Yasser M Hassan
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | | | - Dalal Hussien M Alkhalifah
- Department of Biology, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia.
| | - Wael N Hozzein
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt; Bioproducts Research Chair, Zoology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Han Asard
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerp, Belgium
| | - Walid Abuelsoud
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza, Egypt
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Ozfidan-Konakci C, Yildiztugay E, Alp FN, Kucukoduk M, Turkan I. Naringenin induces tolerance to salt/osmotic stress through the regulation of nitrogen metabolism, cellular redox and ROS scavenging capacity in bean plants. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 157:264-275. [PMID: 33152645 DOI: 10.1016/j.plaphy.2020.10.032] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 10/01/2020] [Indexed: 06/11/2023]
Abstract
The present study was conducted to uncover underlying possible effect mechanisms of flavonoid naringenin (Nar, 0.1-0.4 mM) in nitrogen assimilation, antioxidant response, redox status and the expression of NLP7 and DREB2A, on salt (100 mM NaCl) and osmotic-stressed (10% Polyethylene glycol, -0.54 MPa) Phaseolus vulgaris cv. Yunus 90). Nar ameliorated salt/osmotic stresses-induced growth inhibition and improved the accumulation of proline, glycine betaine and choline. In response to stress, Nar increased endogenous content of nitrate (NO3-) and nitrite (NO2-) by regulating of nitrate reductase and nitrite reductase. Stress-triggered NH4+ was eliminated with Nar through increases in glutamine synthetase and glutamate synthase. After NaCl or NaCl + PEG exposure, Nar utilized the aminating activity of glutamate dehydrogenase in the conversion of NH4+. The stress-inducible expression levels of DREB2A were increased further by Nar, which might have affected stress tolerance of bean. Nar induced effectively the relative expression of NLP7 in the presence of the combination or alone of stress. Also, the impaired redox state by stress was modulated by Nar and hydrogen peroxide (H2O2) and TBARS decreased. Nar regulated the different pathways for scavenging of H2O2 under NaCl and/or PEG treatments. When Nar + NaCl exposure, the damage was removed by superoxide dismutase (SOD), catalase (CAT), POX (only at 0.1 mM Nar + NaCl) and AsA-GSH cycle. Under osmotic stress plus Nar, the protection was manifested by activated CAT and, glutathione S-transferase and the regeneration of ascorbate. 0.1 mM Nar could protect bean plant against salt/osmotic stresses, likely by regulating nitrogen assimilation pathways, improving expression levels of genes associated with tolerance mechanisms and modulating the antioxidant capacity and AsA-GSH redox-based systems.
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Affiliation(s)
- Ceyda Ozfidan-Konakci
- Necmettin Erbakan University, Faculty of Science, Department of Molecular Biology and Genetics, 42090, Konya, Turkey.
| | - Evren Yildiztugay
- Selcuk University, Faculty of Science, Department of Biotechnology, 42130, Konya, Turkey.
| | - Fatma Nur Alp
- Selcuk University, Faculty of Science, Department of Biotechnology, 42130, Konya, Turkey.
| | - Mustafa Kucukoduk
- Selcuk University, Faculty of Science, Department of Biology, 42130, Konya, Turkey.
| | - Ismail Turkan
- Ege University, Faculty of Science, Department of Biology, Bornova, 35100, Izmir, Turkey.
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Al exposure increases proline levels by different pathways in an Al-sensitive and an Al-tolerant rye genotype. Sci Rep 2020; 10:16401. [PMID: 33009431 PMCID: PMC7532535 DOI: 10.1038/s41598-020-73358-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 06/10/2020] [Indexed: 12/30/2022] Open
Abstract
Aluminium (Al) toxicity limits crop productivity, particularly at low soil pH. Proline (Pro) plays a role in protecting plants against various abiotic stresses. Using the relatively Al-tolerant cereal rye (Secale cereale L.), we evaluated Pro metabolism in roots and shoots of two genotypes differing in Al tolerance, var. RioDeva (sensitive) and var. Beira (tolerant). Most enzyme activities and metabolites of Pro biosynthesis were analysed. Al induced increases in Pro levels in each genotype, but the mechanisms were different and were also different between roots and shoots. The Al-tolerant genotype accumulated highest Pro levels and this stronger increase was ascribed to simultaneous activation of the ornithine (Orn)-biosynthetic pathway and decrease in Pro oxidation. The Orn pathway was particularly enhanced in roots. Nitrate reductase (NR) activity, N levels, and N/C ratios demonstrate that N-metabolism is less inhibited in the Al-tolerant line. The correlation between Pro changes and differences in Al-sensitivity between these two genotypes, supports a role for Pro in Al tolerance. Our results suggest that differential responses in Pro biosynthesis may be linked to N-availability. Understanding the role of Pro in differences between genotypes in stress responses, could be valuable in plant selection and breeding for Al resistance.
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15
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Salazar-Chavarría V, Sánchez-Nieto S, Cruz-Ortega R. Fagopyrum esculentum at early stages copes with aluminum toxicity by increasing ABA levels and antioxidant system. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 152:170-176. [PMID: 32422533 DOI: 10.1016/j.plaphy.2020.04.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 03/28/2020] [Accepted: 04/17/2020] [Indexed: 06/11/2023]
Abstract
Aluminum toxicity (Al) is one of the main constraints for plant growth on acid soils. While most plants are sensitive to Al, some species have developed strategies to cope with this metal. Fagopyrum esculentum, Moench., var Mancan (Polygonaceae), despite being an aluminum-tolerant plant, shows root inhibition as a seedling during the first hours of exposure to Al, whereas at later times, it fully recovers. In this study, we assessed whether abscisic acid (ABA) levels and the antioxidant system might be involved in the early tolerance mechanisms of F. esculentum. The results showed that seedlings exposed to 50 μM Al for 3, 6, 12, 24, and 48 h showed decreases in the relative root growth (RRG), and there was an accumulation of Al in the root apex from 3 to 24 h. In addition, reactive oxygen species (ROS) levels increased, and were detected early after Al exposure; endogenous ABA levels increased and antioxidant enzyme activity increased, including catalase (CAT, EC1.11.1.6), glutathione reductase (GR, EC 1.6.4.2), ascorbate peroxidase (APX, EC 1.11.1.11), and superoxide dismutase (SOD, EC 1.15.1.1) activity. Seedlings treated with exogenous ABA also showed increased ROS levels and CAT and APX activity. The results suggest that after the first 12 h of Al treatment, root growth declines while ROS levels increase due to the entrance of Al into the root. However, the enzyme antioxidant system is promoted, which may impact the recovery of the root growth at later times and increasing levels of ABA might mediate this effect.
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Affiliation(s)
- Violeta Salazar-Chavarría
- Instituto de Ecología, UNAM, Circuito exterior Universitario S/N anexo Jardín Botánico exterior Ciudad Universitaria, Mexico
| | - Sobeida Sánchez-Nieto
- Facultad de Química, UNAM, Ciudad Universitaria, Ciudad de México, C.P, 04500, Mexico
| | - Rocío Cruz-Ortega
- Instituto de Ecología, UNAM, Circuito exterior Universitario S/N anexo Jardín Botánico exterior Ciudad Universitaria, Mexico.
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16
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Yin F, Liu X, Cao B, Xu K. Low pH altered salt stress in antioxidant metabolism and nitrogen assimilation in ginger (Zingiber officinale) seedlings. PHYSIOLOGIA PLANTARUM 2020; 168:648-659. [PMID: 31278755 DOI: 10.1111/ppl.13011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Revised: 06/07/2019] [Accepted: 07/03/2019] [Indexed: 05/21/2023]
Abstract
The effects of low pH on antioxidant metabolism and nitrogen (N) assimilation in ginger seedlings under salt stress were investigated. A two-way randomized block design was used: the main treatment consisted of two pH levels, normal and low pH (6.0 and 4.0, respectively), and the other treatment consisted of two salinity levels, 0 and 100 mmol l-1 Na+ (NaCl and Na2 SO4 ). The results showed that low pH decreased the malondialdehyde (MDA) and hydrogen peroxide contents of ginger seedling leaves under salt stress. Moreover, low pH and salt stress significantly decreased the contents of non-enzymatic antioxidants, including ascorbate (AsA) and glutathione (GSH), and increased the activities of antioxidant enzymes, such as superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR) and glutathione reductase (GR). In addition, salt stress inhibited the N assimilation process in ginger seedling leaves, but low pH improved N assimilation under salt stress. Our finding was that low pH alleviated oxidative damage and promoted N assimilation under salt stress.
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Affiliation(s)
- Fengman Yin
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, China
- Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, Tai'an, 271018, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huanghuai Region, Ministry of Agriculture and Rural Affairs, Tai'an, 271018, China
- State Key Laboratory of Crop Biology, Tai'an, 271018, China
| | - Xuena Liu
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, China
- Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, Tai'an, 271018, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huanghuai Region, Ministry of Agriculture and Rural Affairs, Tai'an, 271018, China
- State Key Laboratory of Crop Biology, Tai'an, 271018, China
| | - Bili Cao
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, China
- Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, Tai'an, 271018, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huanghuai Region, Ministry of Agriculture and Rural Affairs, Tai'an, 271018, China
- State Key Laboratory of Crop Biology, Tai'an, 271018, China
| | - Kun Xu
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai'an, 271018, China
- Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production in Shandong, Tai'an, 271018, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops in Huanghuai Region, Ministry of Agriculture and Rural Affairs, Tai'an, 271018, China
- State Key Laboratory of Crop Biology, Tai'an, 271018, China
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17
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Yildiztugay E, Ozfidan-Konakci C, Kucukoduk M, Turkan I. Flavonoid Naringenin Alleviates Short-Term Osmotic and Salinity Stresses Through Regulating Photosynthetic Machinery and Chloroplastic Antioxidant Metabolism in Phaseolus vulgaris. FRONTIERS IN PLANT SCIENCE 2020; 11:682. [PMID: 32582241 PMCID: PMC7283533 DOI: 10.3389/fpls.2020.00682] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 04/30/2020] [Indexed: 05/18/2023]
Abstract
The current study was conducted to demonstrate the possible roles of exogenously applied flavonoid naringenin (Nar) on the efficiency of PSII photochemistry and the responses of chloroplastic antioxidant of salt and osmotic-stressed Phaseolus vulgaris (cv. Yunus90). For this aim, plants were grown in a hydroponic culture and were treated with Nar (0.1 mM and 0.4 mM) alone or in a combination with salt (100 mM NaCl) and/or osmotic (10% Polyethylene glycol, -0.54 MPa). Both caused a reduction in water content (RWC), osmotic potential (ΨΠ), chlorophyll fluorescence (Fv/Fm), and potential photochemical efficiency (Fv/Fo). Nar reversed the changes on these parameters. The phenomenological fluxes (TRo/CS and ETo/CS) altered by stress were induced by Nar and Nar led to a notable increase in the performance index (PIABS) and the capacity of light reaction [ΦPo/(1-ΦPo)]. Besides, Nar-applied plants exhibited higher specific fluxes values [ABS/RC, ETo/RC, and ΨEo/(1-ΨEo)] and decreasing controlled dissipation of energy (DIo/CSo and DIo/RC). The transcripts levels of psbA and psbD were lowered in stress-treated bean but upregulated in Nar-treated plants after stress exposure. Nar also alleviated the changes on gas exchange parameters [carbon assimilation rate (A), stomatal conductance (gs), intercellular CO2 concentrations (Ci), transpiration rate (E), and stomatal limitation (Ls)]. By regulating the antioxidant metabolism of the isolated chloroplasts, Nar was able to control the toxic levels of hydrogen peroxide (H2O2) and TBARS (lipid peroxidation) produced by stresses. Chloroplastic superoxide dismutase (SOD) activity reduced by stresses was increased by Nar. In response to NaCl, Nar increased the activities of ascorbate peroxidase (APX), glutathione reductase (GR), monodehydroascorbate reductase (MDHAR), and dehydroascorbate reductase (DHAR), as well as peroxidase (POX). Nar protected the bean chloroplasts by minimizing disturbances caused by NaCl exposure via the ascorbate (AsA) and glutathione (GSH) redox-based systems. Under Nar plus PEG, Nar maintained the AsA regeneration by the induction of MDHAR and DHAR, but not GSH recycling by virtue of no induction in GR activity and the reduction in GSH/GSSG and GSH redox state. Based on these advances, Nar protected in bean chloroplasts by minimizing disturbances caused by NaCl or PEG exposure via the AsA or GSH redox-based systems and POX activity.
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Affiliation(s)
- Evren Yildiztugay
- Department of Biotechnology, Faculty of Science, Selcuk University, Konya, Turkey
| | - Ceyda Ozfidan-Konakci
- Department of Molecular Biology and Genetics, Faculty of Science, Necmettin Erbakan University, Konya, Turkey
| | - Mustafa Kucukoduk
- Department of Biology, Faculty of Science, Selcuk University, Konya, Turkey
| | - Ismail Turkan
- Department of Biology, Faculty of Science, Ege University, Bornova, Turkey
- *Correspondence: Ismail Turkan,
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18
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de Sousa A, Saleh AM, Habeeb TH, Hassan YM, Zrieq R, Wadaan MAM, Hozzein WN, Selim S, Matos M, AbdElgawad H. Silicon dioxide nanoparticles ameliorate the phytotoxic hazards of aluminum in maize grown on acidic soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 693:133636. [PMID: 31377375 DOI: 10.1016/j.scitotenv.2019.133636] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 07/25/2019] [Accepted: 07/26/2019] [Indexed: 05/03/2023]
Abstract
Aluminum (Al) toxicity is a major constraint for crop production in acid soils. Therefore, looking for sustainable solutions to increase plant tolerance to Al toxicity is needed. Although several studies addressed the potential utilization of silica or silicon dioxide nanoparticles (SNPs) to ameliorate heavy metal phytotoxicity, the exact mechanisms underlying SNPs-induced stress tolerance are still unknown. The current study investigated how SNPs could mitigate Al toxicity in maize plants grown on acidic soil. The impact of Al alone or in combination with SNPs on Al accumulation and detoxification, plant growth, photosynthetic C assimilation and redox homeostasis has been investigated. Al accumulation in stressed-maize organs reduced their growth, decreased photosynthesis related parameters and increased production of reactive oxygen species, through induced NADPH oxidase and photorespiration activities, and cell damage. These effects were more pronounced in roots than in leaves. SNPs ameliorated Al toxicity at growth, physiological and oxidative damage levels. Co-application of SNPs significantly reduced the activities of the photorespiratory enzymes and NADPH oxidase. It stimulated the antioxidant defense systems at enzymatic (superoxide dismutase, catalase, ascorbate and glutathione peroxidases) and non-enzymatic (ascorbate, glutathione, polyphenols, flavonoids, tocopherols, and FRAP) levels. Moreover, SNPs increased organic acids accumulation and metal detoxification (i.e. glutathione-S-transferase activity) in roots, as a protective mechanism against Al toxicity. The SNPs induced-protective mechanisms was dependent on the applied Al concentration and acted in organ-specific manner. Overall, the current study suggests the promising application of SNPs as an innovative approach to mitigate Al phytotoxicity in acidic soils and provides a comprehensive view of the cellular and biochemical mechanisms underlying this mitigation capacity.
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Affiliation(s)
- Alexandra de Sousa
- GreenUPorto - Sustainable Agrifood Production Research Center, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre, s/n, 4169-007 Porto, Portugal; Laboratory for Integrated Molecular Plant Physiology Research (IMPRES), Department of Biology, University of Antwerp, Antwerp, Belgium
| | - Ahmed M Saleh
- Biology Department, Faculty of Science at Yanbu, Taibah University, King Khalid Rd., Al Amoedi, 46423 Yanbu El-Bahr, Saudi Arabia; Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza 12613, Egypt.
| | - Talaat H Habeeb
- Biology Department, Faculty of Science at Yanbu, Taibah University, King Khalid Rd., Al Amoedi, 46423 Yanbu El-Bahr, Saudi Arabia
| | - Yasser M Hassan
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Rafat Zrieq
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, University of Hail, Hail, Saudi Arabia
| | - Mohammed A M Wadaan
- Bioproducts Research Chair, Zoology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Wael N Hozzein
- Bioproducts Research Chair, Zoology Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Samy Selim
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka, Saudi Arabia; Microbiology and Botany Department, Faculty of Science, Suez Canal University, Ismailia, Egypt
| | - Manuela Matos
- Biosystems & Integrative Sciences Institute (BioISI), Faculty of Sciences, University of Lisboa, Lisboa, Portugal; Department of Genetics and Biotechnology (DGB), University of Trás-os-Montes and Alto Douro (UTAD), Vila Real, Portugal
| | - Hamada AbdElgawad
- Laboratory for Integrated Molecular Plant Physiology Research (IMPRES), Department of Biology, University of Antwerp, Antwerp, Belgium.
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Zaid A, Mohammad F, Wani SH, Siddique KMH. Salicylic acid enhances nickel stress tolerance by up-regulating antioxidant defense and glyoxalase systems in mustard plants. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 180:575-587. [PMID: 31129436 DOI: 10.1016/j.ecoenv.2019.05.042] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 01/21/2019] [Accepted: 05/13/2019] [Indexed: 05/07/2023]
Abstract
The present study identified inverse relationships between nickel (Ni) levels and growth, photosynthesis and physio-biochemical attributes, but increasing levels of Ni stress enhanced methylglyoxal, electrolyte leakage, hydrogen peroxide, and lipid peroxidation content. Exogenous application of salicylic acid (SA) (10-5 M) ameliorated the ill-effects of Ni by restoring growth, photosynthesis and physio-biochemical attributes and increasing the activities of enzymes associated with antioxidant systems, especially the ascorbate-glutathione (AsA-GSH) cycle and glyoxalase system. In addition, SA application to Ni-stressed plants had an additive effect on the activities of the ascorbate and glutathione pools, and the AsA-GSH cycle enzymes (ascorbate peroxidase, monodehydroascorbate reductase, dehydroascorbate reductase, glutathione reductase), superoxide dismutase, catalase, glutathione S-transferase, and osmolyte biosynthesis). This trend also follows in glyoxalase system viz. glyoxalase I and glyoxalase II enzymes. Nevertheless, exogenous SA supplementation restored mineral nutrient contents. Principal component analysis showed that growth, photosynthesis, and mineral nutrient parameters were positively correlated with each other and negatively correlated with antioxidant enzymes and oxidative stress biomarkers. Hence, SA is an alternative compound with potential application in the phytoremediation of Ni.
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Affiliation(s)
- Abbu Zaid
- Plant Physiology and Biochemistry Section, Department of Botany, Aligarh Muslim University, Aligarh, 202002, India.
| | - Firoz Mohammad
- Plant Physiology and Biochemistry Section, Department of Botany, Aligarh Muslim University, Aligarh, 202002, India
| | - Shabir Hussain Wani
- Mountain Research Centre for Field Crops, Khudwani Anantnag, 192101, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, J&K, India
| | - Kadambot M H Siddique
- The UWA Institute of Agriculture, The University of Western Australia, LB 5005, Perth, WA, 6001, Australia
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Hamed SM, Hassan SH, Selim S, Kumar A, Khalaf SMH, Wadaan MAM, Hozzein WN, AbdElgawad H. Physiological and biochemical responses to aluminum-induced oxidative stress in two cyanobacterial species. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 251:961-969. [PMID: 31234263 DOI: 10.1016/j.envpol.2019.05.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Revised: 04/23/2019] [Accepted: 05/08/2019] [Indexed: 06/09/2023]
Abstract
Phycoremediation technologies significantly contribute to solving serious problems induced by heavy metals accumulation in the aquatic systems. Here we studied the mechanisms underlying Al stress tolerance in two diazotrophic cyanobacterial species, to identify suitable species for Al phycoremediation. Al uptake as well as the physiological and biochemical responses of Anabaena laxa and Nostoc muscorum to 7 days Al exposure at two different concentrations i.e., mild (100 μM) and high dose (200 μM), were investigated. Our results revealed that A. laxa accumulated more Al, and it could acclimatize to long-term exposure of Al stress. Al induced a dose-dependent decrease in photosynthesis and its related parameters e.g., chlorophyll content (Chl a), phosphoenolpyruvate carboxylase (PEPC) and Ribulose‒1,5‒bisphosphate carboxylase/oxygenase (RuBisCo) activities. The affect was less pronounced in A. laxa than N. muscorum. Moreover, Al stress significantly increased cellular membrane damage as indicated by induced H2O2, lipid peroxidation, protein oxidation, and NADPH oxidase activity. However, these increases were lower in A. laxa compared to N. muscorum. To mitigate the impact of Al stress, A. laxa induced its antioxidant defense system by increasing polyphenols, flavonoids, tocopherols and glutathione levels as well as peroxidase (POX), catalase (CAT), glutathione reductase (GR) and glutathione peroxidase (GPX) enzymes activities. On the other hand, the antioxidant increases in N. muscorum were only limited to ascorbate (ASC) cycle. Overall, high biosorption/uptake capacity and efficient antioxidant defense system of A. laxa recommend its feasibility in the treatment of Al contaminated waters/soils.
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Affiliation(s)
- Seham M Hamed
- Soil Microbiology Department, Soils, Water and Environment Research Institute, Agricultural Research Center, Giza, P.O. 175, El‒Orman, Egypt.
| | - Sherif H Hassan
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka, P.O, 2014, Saudi Arabia; Botany and Microbiology Department, Faculty of Science, Beni‒Suef University, Beni‒Suef, 62521, Egypt
| | - Samy Selim
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Jouf University, Sakaka, P.O, 2014, Saudi Arabia; Microbiology and Botany Department, Faculty of Science, Suez Canal University, Ismailia, P.O.Box, 41522, Egypt
| | - Amit Kumar
- Centre for Climate Change Studies, Sathyabama Institute of Science and Technology, Chennai, 600119, India
| | - Sameh M H Khalaf
- Bioproducts Research Chair, Zoology Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Mohammed A M Wadaan
- Bioproducts Research Chair, Zoology Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Wael N Hozzein
- Bioproducts Research Chair, Zoology Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia; Botany and Microbiology Department, Faculty of Science, Beni‒Suef University, Beni‒Suef, 62521, Egypt
| | - Hamada AbdElgawad
- Botany and Microbiology Department, Faculty of Science, Beni‒Suef University, Beni‒Suef, 62521, Egypt; Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerp, Belgium
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21
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Ahmad P, Abd Allah EF, Alyemeni MN, Wijaya L, Alam P, Bhardwaj R, Siddique KHM. Exogenous application of calcium to 24-epibrassinosteroid pre-treated tomato seedlings mitigates NaCl toxicity by modifying ascorbate-glutathione cycle and secondary metabolites. Sci Rep 2018; 8:13515. [PMID: 30201952 PMCID: PMC6131545 DOI: 10.1038/s41598-018-31917-1] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Accepted: 08/08/2018] [Indexed: 01/16/2023] Open
Abstract
The present study tested the efficacy of 24-epibrassinolide (EBL) and calcium (Ca) for mediating salinity tolerance in tomato. Salinity stress affected the morphological parameters of tomato as well as leaf relative water content (LRWC), photosynthetic and accessory pigments, leaf gas exchange parameters, chlorophyll fluorescence and the uptake of essential macronutrients. The salt (NaCl) treatment induced oxidative stress in the form of increased Na+ ion concentration by 146%, electrolyte leakage (EL) by 61.11%, lipid peroxidation (MDA) 167% and hydrogen peroxide (H2O2) content by 175%. Salt stress also enhanced antioxidant enzyme activities including those in the ascorbate-glutathione cycle. Plants treated with EBL or Ca after salt exposure mitigated the ill effects of salt stress, including oxidative stress, by reducing the uptake of Na+ ions by 52%. The combined dose of EBL + Ca reversed the salt-induced changes through an elevated pool of enzymes in the ascorbate-glutathione cycle, other antioxidants (superoxide dismutase, catalase), and osmoprotectants (proline, glycine betaine). Exogenously applied EBL and Ca help to optimize mineral nutrient status and enable tomato plants to tolerate salt toxicity. The ability of tomato plants to tolerate salt stress when supplemented with EBL and Ca was attributed to modifications to enzymatic and non-enzymatic antioxidants, osmolytes and metabolites.
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Affiliation(s)
- Parvaiz Ahmad
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2460, Riyadh, 11451, Saudi Arabia.
- Department of Botany, S.P. College, Srinagar, 190001, Jammu and Kashmir, India.
| | - Elsayed Fathi Abd Allah
- Plant Production Department, College of Food and Agricultural Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Mohammed Nasser Alyemeni
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2460, Riyadh, 11451, Saudi Arabia
| | - Leonard Wijaya
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2460, Riyadh, 11451, Saudi Arabia
| | - Pravej Alam
- Biology Department, College of Science and Humanities, Prince Sattam bin Abdulaziz University, 11942, Alkharj, Saudi Arabia
| | - Renu Bhardwaj
- Department of Botanical and Environmental Sciences, Guru Nanak Dev University, Amritsar, 143005, India
| | - Kadambot H M Siddique
- The UWA Institute of Agriculture and School of Agriculture & Environment, The University of Western Australia, LB 5005, Perth, WA, 6001, Australia
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Monteiro F, Vidigal P, Barros AB, Monteiro A, Oliveira HR, Viegas W. Genetic Distinctiveness of Rye In situ Accessions from Portugal Unveils a New Hotspot of Unexplored Genetic Resources. FRONTIERS IN PLANT SCIENCE 2016; 7:1334. [PMID: 27630658 PMCID: PMC5006150 DOI: 10.3389/fpls.2016.01334] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 08/18/2016] [Indexed: 05/21/2023]
Abstract
Rye (Secale cereale L.) is a cereal crop of major importance in many parts of Europe and rye breeders are presently very concerned with the restrict pool of rye genetic resources available. Such narrowing of rye genetic diversity results from the presence of "Petkus" pool in most modern rye varieties as well as "Petkus" × "Carsten" heterotic pool in hybrid rye breeding programs. Previous studies on rye's genetic diversity revealed moreover a common genetic background on landraces (ex situ) and cultivars, regardless of breeding level or geographical origin. Thus evaluation of in situ populations is of utmost importance to unveil "on farm" diversity, which is largely undervalued. Here, we perform the first comprehensive assessment of rye's genetic diversity and population structuring using cultivars, ex situ landraces along a comprehensive sampling of in situ accessions from Portugal, through a molecular-directed analysis using SSRs markers. Rye genetic diversity and population structure analysis does not present any geographical trend but disclosed marked differences between genetic backgrounds of in situ accessions and those of cultivars/ex situ collections. Such genetic distinctiveness of in situ accessions highlights their unexplored potential as new genetic resources, which can be used to boost rye breeding strategies and the production of new varieties. Overall, our study successfully demonstrates the high prospective impact of comparing genetic diversity and structure of cultivars, ex situ, and in situ samples in ascertaining the status of plant genetic resources (PGR).
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Affiliation(s)
- Filipa Monteiro
- Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia, Universidade de LisboaLisboa, Portugal
- *Correspondence: Filipa Monteiro
| | - Patrícia Vidigal
- Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia, Universidade de LisboaLisboa, Portugal
| | - André B. Barros
- Colégio F3 Food, Farming and Forestry, Universidade de LisboaLisboa, Portugal
| | - Ana Monteiro
- Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia, Universidade de LisboaLisboa, Portugal
| | - Hugo R. Oliveira
- Plant Biology/Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do PortoPorto, Portugal
- Faculty of Life Sciences, Manchester Institute of Biotechnology, University of ManchesterManchester, UK
| | - Wanda Viegas
- Linking Landscape, Environment, Agriculture and Food, Instituto Superior de Agronomia, Universidade de LisboaLisboa, Portugal
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Wang Y, Xu L, Tang M, Jiang H, Chen W, Zhang W, Wang R, Liu L. Functional and Integrative Analysis of the Proteomic Profile of Radish Root under Pb Exposure. FRONTIERS IN PLANT SCIENCE 2016; 7:1871. [PMID: 28018404 PMCID: PMC5156831 DOI: 10.3389/fpls.2016.01871] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 11/28/2016] [Indexed: 05/22/2023]
Abstract
Lead (Pb) is one of the most abundant heavy metal (HM) pollutants, which can penetrate the plant through the root and then enter the food chain causing potential health risks for human beings. Radish is an important root vegetable crop worldwide. To investigate the mechanism underlying plant response to Pb stress in radish, the protein profile changes of radish roots respectively upon Pb(NO3)2 at 500 mg L-1(Pb500) and 1000 mg L-1(Pb1000), were comprehensively analyzed using iTRAQ (Isobaric Tag for Relative and Absolute Quantification). A total of 3898 protein species were successfully detected and 2141 were quantified. Among them, a subset of 721 protein species were differentially accumulated upon at least one Pb treatment, and 135 ones showed significantly abundance changes under both two Pb-stressed conditions. Many critical protein species related to protein translation, processing, and degradation, reactive oxygen species (ROS) scavenging, photosynthesis, and respiration and carbon metabolism were successfully identified. Gene Ontology (GO) and pathway enrichment analysis of the 135 differential abundance protein species (DAPS) revealed that the overrepresented GO terms included "cell wall," "apoplast," "response to metal ion," "vacuole," and "peroxidase activity," and the critical enriched pathways were involved in "citric acid (TCA) cycle and respiratory electron transport," "pyruvate metabolism," "phenylalanine metabolism," "phenylpropanoid biosynthesis," and "carbon metabolism." Furthermore, the integrative analysis of transcriptomic, miRNA, degradome, metabolomics and proteomic data provided a strengthened understanding of radish response to Pb stress at multiple levels. Under Pb stress, many key enzymes (i.e., ATP citrate lyase, Isocitrate dehydrogenase, fumarate hydratase and malate dehydrogenase) involved in the glycolysis and TCA cycle were severely affected, which ultimately cause alteration of some metabolites including glucose, citrate and malate. Meanwhile, a series of other defense responses including ascorbate (ASA)-glutathione (GSH) cycle for ROS scavenging and Pb-defense protein species (glutaredoxin, aldose 1-epimerase malate dehydrogenase and thioredoxin), were triggered to cope with Pb-induced injuries. These results would be helpful for further dissecting molecular mechanism underlying plant response to HM stresses, and facilitate effective management of HM contamination in vegetable crops by genetic manipulation.
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