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Gao W, Wu D, Zhang D, Geng Z, Tong M, Duan Y, Xia W, Chu J, Yao X. Comparative analysis of the effects of microplastics and nitrogen on maize and wheat: Growth, redox homeostasis, photosynthesis, and AsA-GSH cycle. Sci Total Environ 2024; 932:172555. [PMID: 38677420 DOI: 10.1016/j.scitotenv.2024.172555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 04/15/2024] [Accepted: 04/16/2024] [Indexed: 04/29/2024]
Abstract
Microplastics (MPs) pose a significant threat to the function of agro-ecosystems. At present, research on MPs has mainly focused on the effects of different concentrations or types of MPs on a crop, while ignoring other environmental factors. In agricultural production, the application of nitrogen (N) fertilizer is an important means to maintain the high yield of crops. The effects of MPs and N on growth parameters, photosynthetic system, active oxygen metabolism, nutrient content, and ascorbate-glutathione (AsA-GSH) cycle of maize and wheat were studied in order to explicit whether N addition could effectively alleviate the effects of MPs on maize and wheat. The results showed that MPs inhibited the plant height of both maize and wheat, and MPs effects on physiological traits of maize were more severe than those of wheat, reflecting in reactive oxygen metabolism and restriction of photosynthetic capacity. Under the condition of N supply, AsA-GSH cycle of two plants has different response strategies to MPs: Maize promoted enzyme activity and co-accumulation of AsA and GSH, while wheat tended to consume AsA and accumulate GSH. N application induced slight oxidative stress on maize, which was manifested as an increase in hydrogen peroxide and malonaldehyde contents, and activities of polyphenol oxidase and peroxidase. The antioxidant capacity of maize treated with the combination of MPs + N was better than that treated with N or MPs alone. N could effectively alleviate the adverse effects of MPs on wheat by improving the antioxidant capacity.
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Affiliation(s)
- Wang Gao
- School of Life Sciences, Hebei University, Baoding 071002, China
| | - Dengyun Wu
- School of Life Sciences, Hebei University, Baoding 071002, China
| | - Dan Zhang
- School of Life Sciences, Hebei University, Baoding 071002, China
| | - Zixin Geng
- School of Life Sciences, Hebei University, Baoding 071002, China
| | - Mengting Tong
- School of Life Sciences, Hebei University, Baoding 071002, China
| | - Yusui Duan
- School of Life Sciences, Hebei University, Baoding 071002, China
| | - Wansheng Xia
- School of Life Sciences, Hebei University, Baoding 071002, China
| | - Jianzhou Chu
- School of Life Sciences, Hebei University, Baoding 071002, China.
| | - Xiaoqin Yao
- School of Life Sciences, Hebei University, Baoding 071002, China; Institute of Life Sciences and Green Development, Hebei University, Baoding 071002, China; Key Laboratory of Microbial Diversity Research and Application of Hebei Province, Baoding 071002, China.
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Mazur M, Matoša Kočar M, Jambrović A, Sudarić A, Volenik M, Duvnjak T, Zdunić Z. Crop-Specific Responses to Cold Stress and Priming: Insights from Chlorophyll Fluorescence and Spectral Reflectance Analysis in Maize and Soybean. Plants (Basel) 2024; 13:1204. [PMID: 38732417 PMCID: PMC11085405 DOI: 10.3390/plants13091204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 04/22/2024] [Accepted: 04/22/2024] [Indexed: 05/13/2024]
Abstract
This study aimed to investigate the impact of cold stress and priming on photosynthesis in the early development of maize and soybean, crops with diverse photosynthetic pathways. The main objectives were to determine the effect of cold stress on chlorophyll a fluorescence parameters and spectral reflectance indices, to determine the effect of cold stress priming and possible stress memory and to determine the relationship between different parameters used in determining the stress response. Fourteen maize inbred lines and twelve soybean cultivars were subjected to control, cold stress, and priming followed by cold stress in a walk-in growth chamber. Measurements were conducted using a portable fluorometer and a handheld reflectance instrument. Cold stress induced an overall downregulation of PSII-related specific energy fluxes and efficiencies, the inactivation of RCs resulting in higher energy dissipation, and electron transport chain impairment in both crops. Spectral reflectance indices suggested cold stress resulted in pigment differences between crops. The effect of priming was more pronounced in maize than in soybean with mostly a cumulatively negative effect. However, priming stabilized the electron trapping efficiency and upregulated the electron transfer system in maize, indicating an adaptive response. Overall, this comprehensive analysis provides insights into the complex physiological responses of maize and soybean to cold stress, emphasizing the need for further genotype-specific cold stress response and priming effect research.
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Affiliation(s)
- Maja Mazur
- Agricultural Institute Osijek, Južno Predgrađe 17, 31000 Osijek, Croatia; (M.M.K.); (A.J.); (A.S.); (M.V.); (T.D.); (Z.Z.)
| | - Maja Matoša Kočar
- Agricultural Institute Osijek, Južno Predgrađe 17, 31000 Osijek, Croatia; (M.M.K.); (A.J.); (A.S.); (M.V.); (T.D.); (Z.Z.)
| | - Antun Jambrović
- Agricultural Institute Osijek, Južno Predgrađe 17, 31000 Osijek, Croatia; (M.M.K.); (A.J.); (A.S.); (M.V.); (T.D.); (Z.Z.)
- Center of Excellence for Biodiversity and Molecular Plant Breeding, Faculty of Agriculture, University of Zagreb, Svetošimunska Cesta 25, 10000 Zagreb, Croatia
| | - Aleksandra Sudarić
- Agricultural Institute Osijek, Južno Predgrađe 17, 31000 Osijek, Croatia; (M.M.K.); (A.J.); (A.S.); (M.V.); (T.D.); (Z.Z.)
- Center of Excellence for Biodiversity and Molecular Plant Breeding, Faculty of Agriculture, University of Zagreb, Svetošimunska Cesta 25, 10000 Zagreb, Croatia
| | - Mirna Volenik
- Agricultural Institute Osijek, Južno Predgrađe 17, 31000 Osijek, Croatia; (M.M.K.); (A.J.); (A.S.); (M.V.); (T.D.); (Z.Z.)
| | - Tomislav Duvnjak
- Agricultural Institute Osijek, Južno Predgrađe 17, 31000 Osijek, Croatia; (M.M.K.); (A.J.); (A.S.); (M.V.); (T.D.); (Z.Z.)
| | - Zvonimir Zdunić
- Agricultural Institute Osijek, Južno Predgrađe 17, 31000 Osijek, Croatia; (M.M.K.); (A.J.); (A.S.); (M.V.); (T.D.); (Z.Z.)
- Center of Excellence for Biodiversity and Molecular Plant Breeding, Faculty of Agriculture, University of Zagreb, Svetošimunska Cesta 25, 10000 Zagreb, Croatia
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3
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Abuelsoud W, Saleh AM, Mohammed AE, Alotaibi MO, AbdElgawad H. Chitosan nanoparticles upregulate C and N metabolism in soybean plants grown under elevated levels of atmospheric carbon dioxide. Int J Biol Macromol 2023; 252:126434. [PMID: 37604417 DOI: 10.1016/j.ijbiomac.2023.126434] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 08/13/2023] [Accepted: 08/18/2023] [Indexed: 08/23/2023]
Abstract
Despite the wide utilization of chitosan nanoparticles (CSNPs) as a promising approach for sustainable agriculture, their efficiency under elevated CO2 (eCO2), has not been evaluated. The interactive effects of CSNPs and eCO2 were evaluated on the growth and C and N metabolism of soybean plants. Plants were treated with CSNPs and grown under ambient CO2 (410 ppm, aCO2) or eCO2 (645 ppm). Regardless of CO2 level, CSNPs improved the net photosynthetic rate. CSNPs aggravated the effect of eCO2 treatment on the levels of non-structural carbohydrates (i.e., glucose, fructose, sucrose, and starch), especially in shoots, which was inconsistence with the upregulation of carbohydrates metabolizing enzymes. Being the most pivotal energetic and signaling organic compounds in higher plants, the synergistic action of CSNPs and eCO2 on the accumulation of soluble sugars upregulated the N metabolism as indicated by induced activities of nitrate reductase, arginase, glutamate dehydrogenase, glutamine synthetase, and glutamine oxoglutarate aminotransferase which was manifested finally as increased shoot and root total nitrogen content as well as proline and aspartate in roots. At the hormonal level, the coexistence of eCO2 with CSNPs further supports their positive impact on the contents of IAA and, to a lesser extent, GAs. The present data prove that the biofertilization capacity of CSNPs is even more potent under futuristic eCO2 levels and could even further improve the growth and resilience of plants.
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Affiliation(s)
- Walid Abuelsoud
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza 12613, 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, Riyadh 84428, Saudi Arabia
| | - Modhi O Alotaibi
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh 84428, Saudi Arabia
| | - Hamada AbdElgawad
- Department of Botany and Microbiology, Faculty of Science, Beni-Suef University, 62521 Beni-Suef, Egypt; Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerp, Belgium
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4
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Rai PK, Song H, Kim KH. Nanoparticles modulate heavy-metal and arsenic stress in food crops: Hormesis for food security/safety and public health. Sci Total Environ 2023; 902:166064. [PMID: 37544460 DOI: 10.1016/j.scitotenv.2023.166064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/25/2023] [Accepted: 08/03/2023] [Indexed: 08/08/2023]
Abstract
Heavy metal and arsenic (HM-As) contamination at the soil-food crop interface is a threat to food security/safety and public health worldwide. The potential ecotoxicological effects of HM-As on food crops can perturb normal physiological, biochemical, and molecular processes. To protect food safety and human health, nanoparticles (NPs) can be applied to seed priming and soil amendment, as 'manifestation of hormesis' to modulate HM-As-induced oxidative stress in edible crops. This review provides a comprehensive overview of NPs-mediated alleviation of HM-As stress in food crops and resulting hormetic effects. The underlying biochemical and molecular mechanisms in the amelioration of HM-As-induced oxidative stress is delineated by covering the various aspects of the interaction of NPs (e.g., magnetic particles, silicon, metal oxides, selenium, and carbon nanotubes) with plant microbes, phytohormone, signaling molecules, and plant-growth bioregulators (e.g., salicylic acid and melatonin). With biotechnical advances (such as clustered regularly interspaced short palindromic repeats (CRISPR) gene editing and omics), the efficacy of NPs and associated hormesis has been augmented to produce "pollution-safe designer cultivars" in HM-As-stressed agriculture systems. Future research into nanoscale technological innovations should thus be directed toward achieving food security, sustainable development goals, and human well-being, with the aid of HM-As stress resilient food crops.
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Affiliation(s)
- Prabhat Kumar Rai
- Department of Environmental Science, Mizoram University, Aizawl 796004, India
| | - Hocheol Song
- Department of Earth Resources and Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea; Department of Civil & Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea
| | - Ki-Hyun Kim
- Department of Civil & Environmental Engineering, Hanyang University, 222 Wangsimni-Ro, Seoul 04763, Republic of Korea.
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Abuelsoud W, Madany MMY, Sheteiwy MS, Korany SM, Alsharef E, AbdElgawad H. Alleviation of gadolinium stress on Medicago by elevated atmospheric CO 2 is mediated by changes in carbohydrates, Anthocyanin, and proline metabolism. Plant Physiol Biochem 2023; 202:107925. [PMID: 37566995 DOI: 10.1016/j.plaphy.2023.107925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 07/30/2023] [Accepted: 08/01/2023] [Indexed: 08/13/2023]
Abstract
Rare earth elements (REE) like Gadolinium (Gd), are increasingly used in industry and agriculture and this is concomitant with the increasingly leaking of Gd into the environment. Under a certain threshold concentration, REE can promote plant growth, however, beyond this concentration, they exert negative effects on plant growth. Moreover, the effect of Gd on plants growth and metabolism under a futuristic climate with increasingly atmospheric CO2 has not yet been studied. To this end, we investigated the effect of soil contamination with Gd (150 mg/kg soil) on the growth, carbohydrates, proline, and anthocyanin metabolism of Medicago plants grown under ambient (aCO2, 410 ppm) or elevated CO2 (eCO2, 720 ppm) concentration. Gd negatively affected the growth and photosynthesis of plants and imposed oxidative stress i.e., increased H2O2 and lipid peroxidation (MDA) level. As defense lines, the level and metabolism of osmoprotectants (soluble sugars and proline) and antioxidants (phenolics, anthocyanins, and tocopherols) were increased under Gd treatment. High CO2 positively affected the growth and metabolism of Medicago plants. Moreover, eCO2 mitigated the negative impacts of Gd on Medicago growth. It further induced the levels of osmoprotectants and antioxidants. In line with increased proline and anthocyanins, their metabolic enzymes (e.g. OAT, P5CS, PAL, and CS) were also increased. This study advances our understanding of how Gd adversely affects Medicago plant growth and metabolism. It also sheds light on the biochemical mechanisms underlying the Gd stress-reducing impact of eCO2.
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Affiliation(s)
- Walid Abuelsoud
- Botany and Microbiology Department, Faculty of Science, Cairo University, Egypt.
| | - Mahmoud M Y Madany
- Biology Department, College of Science, Taibah University, Al-Madinah Al-Munawarah, 41411, Saudi Arabia
| | - Mohamed S Sheteiwy
- Department of Agronomy, Faculty of Agriculture, Mansoura University, Mansoura, 35516, Egypt
| | - Shereen M Korany
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, Riyadh, 11671, Saudi Arabia
| | - Emad Alsharef
- 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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6
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Sheteiwy MS, Basit F, El-Keblawy A, Jośko I, Abbas S, Yang H, Korany SM, Alsherif EA, Dawood MFA, AbdElgawad H. Elevated CO 2 differentially attenuates beryllium-induced oxidative stress in oat and alfalfa. Physiol Plant 2023; 175:e14036. [PMID: 37882304 DOI: 10.1111/ppl.14036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 08/20/2023] [Accepted: 09/20/2023] [Indexed: 10/27/2023]
Abstract
Elevated CO2 (eCO2 ) is one of the climate changes that may benefit plant growth under emerging soil contaminants such as heavy metals. In this regard, the morpho-physiological mechanisms underlying the mitigating impact of eCO2 on beryllium (Be) phytotoxicity are poorly known. Hence, we investigated eCO2 and Be interactive effects on the growth and metabolism of two species from different groups: cereal (oat) and legume (alfalfa). Be stress significantly reduced the growth and photosynthetic attributes in both species, but alfalfa was more susceptible to Be toxicity. Be stress induced reactive oxygen species (ROS) accumulation by increasing photorespiration, subsequently resulting in increased lipid and protein oxidation. However, the growth inhibition and oxidative stress induced by Be stress were mitigated by eCO2 . This could be explained, at least partially, by the increase in organic acids (e.g., citric acid) released into the soil, which subsequently reduced Be uptake. Additionally, eCO2 reduced cellular oxidative damage by reducing photorespiration, which was more significant in alfalfa plants. Furthermore, eCO2 improved the redox status and detoxification processes, including phytochelatins, total glutathione and metallothioneins levels, and glutathione-S-transferase activity in both species, but to a greater extend in alfalfa. In this context, eCO2 also stimulated anthocyanin biosynthesis by accumulating its precursors (phenylalanine, coumaric acid, cinnamic acid, and naringenin) and key biosynthetic enzymes (phenylalanine ammonia-lyase, cinnamate hydroxylase, and coumarate:CoA ligase) mainly in alfalfa plants. Overall, this study explored the mechanistic approach by which eCO2 alleviates the harmful effects of Be. Alfalfa was more sensitive to Be stress than oats; however, the alleviating impact of eCO2 on Be stress was more pronounced in alfalfa.
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Affiliation(s)
- Mohamed S Sheteiwy
- Department of Applied Biology, Faculty of Science, University of Sharjah, Sharjah, United Arab Emirates
- Department of Agronomy, Faculty of Agriculture, Mansoura University, Mansoura, Egypt
| | - Farwa Basit
- Department of Botany, Faculty of Life Sciences, Government College University, Faisalabad, Pakistan
| | - Ali El-Keblawy
- Department of Agronomy, Faculty of Agriculture, Mansoura University, Mansoura, Egypt
| | - Izabela Jośko
- Institute of Plant Genetics, Breeding and Biotechnology, Faculty of Agrobioengineering, University of Life Sciences, Lublin, Poland
| | - Saghir Abbas
- Department of Botany, Faculty of Life Sciences, Government College University, Faisalabad, Pakistan
| | - Haishui Yang
- College of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Shereen Magdy Korany
- Department of Biology, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Emad A Alsherif
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt
| | - Mona F A Dawood
- Botany and Microbiology Department, Faculty of Science, Assiut University, Assiut, Egypt
| | - Hamada AbdElgawad
- Botany and Microbiology Department, Faculty of Science, Assiut University, Assiut, Egypt
- Integrated Molecular Plant Physiology Research (IMPRES), Department of Biology, University of Antwerp, Antwerp, Belgium
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Basit F, He X, Zhu X, Sheteiwy MS, Minkina T, Sushkova S, Josko I, Hu J, Hu W, Guan Y. Uptake, accumulation, toxicity, and interaction of metallic-based nanoparticles with plants: current challenges and future perspectives. Environ Geochem Health 2023; 45:4165-4179. [PMID: 37103657 DOI: 10.1007/s10653-023-01561-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 03/29/2023] [Indexed: 06/19/2023]
Abstract
The rapid development of industrialization is causing several fundamental problems in plants due to the interaction between plants and soil contaminated with metallic nanoparticles (NPs). Numerous investigations have been conducted to address the severe toxic effects caused by nanoparticles in the past few decades. Based on the composition, size, concentration, physical and chemical characteristics of metallic NPs, and plant types, it enhances or lessens the plant growth at various developmental stages. Metallic NPs are uptaken by plant roots and translocated toward shoots via vascular system based on composition, size, shape as well as plant anatomy and cause austere phytotoxicity. Herein, we tried to summarize the toxicity induced by the uptake and accumulation of NPs in plants and also we explored the detoxification mechanism of metallic NPs adopted by plants via using different phytohormones, signaling molecules, and phytochelatins. This study was intended to be an unambiguous assessment including current knowledge on NPs uptake, accumulation, and translocation in higher plants. Furthermore, it will also provide sufficient knowledge to the scientific community to understand the metallic NPs-induced inhibitory effects and mechanisms involved within plants.
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Affiliation(s)
- Farwa Basit
- Hainan Institute, Zhejiang University, Sanya, 572025, China
- The Advanced Seed Institute, Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou, 310058, China
| | - Xiang He
- Hainan Institute, Zhejiang University, Sanya, 572025, China
- The Advanced Seed Institute, Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou, 310058, China
| | - Xiaobo Zhu
- Hainan Institute, Zhejiang University, Sanya, 572025, China
- The Advanced Seed Institute, Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou, 310058, China
| | - Mohamed Salah Sheteiwy
- Department of Agronomy, Faculty of Agriculture, Mansoura University, Mansoura, 35516, Egypt
| | - Tatiana Minkina
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don, Russia, 344006
| | - Svetlana Sushkova
- Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don, Russia, 344006
| | - Izabela Josko
- The Advanced Seed Institute, Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou, 310058, China
| | - Jin Hu
- Hainan Institute, Zhejiang University, Sanya, 572025, China
- The Advanced Seed Institute, Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou, 310058, China
| | - Weimin Hu
- Hainan Institute, Zhejiang University, Sanya, 572025, China
- The Advanced Seed Institute, Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou, 310058, China
| | - Yajing Guan
- Hainan Institute, Zhejiang University, Sanya, 572025, China.
- The Advanced Seed Institute, Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University, Hangzhou, 310058, China.
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Alsherif EA, Hajjar D, AbdElgawad H. Future Climate CO 2 Reduces the Tungsten Effect in Rye Plants: A Growth and Biochemical Study. Plants (Basel) 2023; 12:1924. [PMID: 37653841 PMCID: PMC10222005 DOI: 10.3390/plants12101924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/03/2023] [Accepted: 05/04/2023] [Indexed: 09/02/2023]
Abstract
Heavy metal pollution is one of the major agronomic challenges. Tungsten (W) exposure leads to its accumulation in plants, which in turn reduces plant growth, inhibits photosynthesis and induces oxidative damage. In addition, the predicted increase in CO2 could boost plant growth under both optimal and heavy metal stress conditions. The aim of the present study was to investigate the effect of W on growth, photosynthetic parameters, oxidative stress and redox status in rye plants under ambient and elevated (eCO2) levels. To this end, rye plants were grown under the following conditions: ambient CO2 (aCO2, 420 ppm), elevated CO2 (eCO2, 720 ppm), W stress (350 mg kg-1 soil) and W+eCO2. W stress induced significant (p < 0.05) decreases in growth and photosynthesis, increases in oxidative damages (lipid peroxidation) and the antioxidant defense system, i.e., ascorbate (ASC), reduced glutathione (GSH), GSH reductase (GR), peroxidase (POX), catalase (CAT), superoxide dismutase (SOD), ASC peroxide (APX) and dehydroascorbate reductase (DHAR). On the other hand, eCO2 decreased W uptake and improved photosynthesis, which sequentially improved plant growth. The obtained results showed that eCO2 can decrease the phytotoxicity risks of W in rye plants. This positive impact of eCO2 on reducing the negative effects of soil W was related to their ability to enhance plant photosynthesis, which in turn provided energy and a carbon source for scavenging the reactive oxygen species (ROS) accumulation caused by soil W stress.
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Affiliation(s)
- Emad A. Alsherif
- Biology Department, College of Science and Arts at Khulis, University of Jeddah, Jeddah 21959, Saudi Arabia
| | - Dina Hajjar
- Department of Biochemistry, College of Science, University of Jeddah, Jeddah 21959, Saudi Arabia;
| | - Hamada AbdElgawad
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, 2018 Antwerp, Belgium;
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9
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Gong Z, Duan Y, Liu D, Zong Y, Zhang D, Shi X, Hao X, Li P. Physiological and transcriptome analysis of response of soybean (Glycine max) to cadmium stress under elevated CO 2 concentration. J Hazard Mater 2023; 448:130950. [PMID: 36860078 DOI: 10.1016/j.jhazmat.2023.130950] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 01/30/2023] [Accepted: 02/04/2023] [Indexed: 06/18/2023]
Abstract
The continuous accumulation of Cd has long-lasting detrimental effects on plant growth and food safety. Although elevated CO2 concentration (EC) has been reported to reduce Cd accumulation and toxicity in plants, evidence on the functions of elevated CO2 concentration and its mechanisms in the possible alleviation of Cd toxicity in soybean are limited. Here, we used physiological and biochemical methods together with transcriptomic comparison to explore the effects of EC on Cd-stressed soybean. Under Cd stress, EC significantly increased the weight of roots and leaves, promoted the accumulations of proline, soluble sugars, and flavonoid. In addition, the enhancement of GSH activity and GST gene expressions promoted Cd detoxification. These defensive mechanisms reduced the contents of Cd2+, MDA, and H2O2 in soybean leaves. The up-regulation of genes encoding phytochelatin synthase, MTPs, NRAMP, and vacuoles protein storage might play vital roles in the transportation and compartmentalization process of Cd. The MAPK and some transcription factors such as bHLH, AP2/ERF, and WRKY showed changed expressions and might be engaged in mediation of stress response. These findings provide a boarder view on the regulatory mechanism of EC on Cd stress and provide numerous potential target genes for future engineering of Cd-tolerant cultivars in soybean breeding programs under climate changes scenarios.
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Affiliation(s)
- Zehua Gong
- College of Agriculture, Shanxi Agricultural University, 030801 Taigu, China; State Key Laboratory of Sustainable Dryland Agriculture, Shanxi Agricultural University, Taiyuan 030031, China
| | - Yuqian Duan
- College of Agriculture, Shanxi Agricultural University, 030801 Taigu, China
| | - Danmei Liu
- School of Life Science, Shanxi University, 030036, Taiyuan, China
| | - Yuzheng Zong
- College of Agriculture, Shanxi Agricultural University, 030801 Taigu, China
| | - Dongsheng Zhang
- College of Agriculture, Shanxi Agricultural University, 030801 Taigu, China
| | - Xinrui Shi
- College of Agriculture, Shanxi Agricultural University, 030801 Taigu, China
| | - Xingyu Hao
- College of Agriculture, Shanxi Agricultural University, 030801 Taigu, China; State Key Laboratory of Sustainable Dryland Agriculture, Shanxi Agricultural University, Taiyuan 030031, China.
| | - Ping Li
- College of Agriculture, Shanxi Agricultural University, 030801 Taigu, China; State Key Laboratory of Sustainable Dryland Agriculture, Shanxi Agricultural University, Taiyuan 030031, China.
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Alsherif EA, AbdElgawad H. Elevated CO 2 Suppresses the Vanadium Stress in Wheat Plants under the Future Climate CO 2. Plants (Basel) 2023; 12:1535. [PMID: 37050160 PMCID: PMC10096617 DOI: 10.3390/plants12071535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/27/2023] [Accepted: 03/29/2023] [Indexed: 06/19/2023]
Abstract
Increases in atmospheric CO2 is known to promote plant growth under heavy metals stress conditions. However, vanadium (V) stress mitigating the impact of eCO2 as well as the physiological and biochemical bases of this stress mitigation have not been well studied. To this end, this study investigated the growth, photosynthetic parameters, oxidative damages antioxidants, and antioxidants enzymes in wheat plants grown under ambient (420 PPM) and high eCO2 (720 ppm) levels. Exposing wheat plants to higher V increased its accumulation in plants which consequentially inhibited plant growth and induced oxidative damage. An increase in antioxidant and detoxification defense systems was observed but it was not enough to reduce V stress toxicity. On the other hand, wheat growth was improved as a result of reduced V uptake and toxicity on photosynthesis under eCO2. To reduce V uptake, wheat accumulated citric acid, and oxalic acid in soil preferentially under both treatments but to more extend under V and eCO2. Additionally, improved photosynthesis induced high carbon availability that was directed to produce chelating proteins (metallothioneins, phytochelatin) and antioxidants (phenolics, flavonoids, total antioxidant capacity). This study advances our knowledge of the processes behind the variations in the physiological and biochemical responses of the wheat crop under V and eCO2 conditions.
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Affiliation(s)
- Emad A. Alsherif
- Biology Department, College of Science and Arts at Khulis, University of Jeddah, Jeddah 21959, Saudi Arabia
| | - Hamada AbdElgawad
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, 2180 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] [What about the content of this article? (0)] [Affiliation(s)] [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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Arianmehr M, Karimi N, Souri Z. Exogenous supplementation of Sulfur (S) and Reduced Glutathione (GSH) Alleviates Arsenic Toxicity in Shoots of Isatis cappadocica Desv and Erysimum allionii L. Environ Sci Pollut Res Int 2022; 29:64205-64214. [PMID: 35469387 DOI: 10.1007/s11356-022-19477-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Accepted: 02/23/2022] [Indexed: 06/14/2023]
Abstract
The current study was conducted to investigate the role of sulfur (S) and reduced glutathione (GSH) in mitigating arsenic (As) toxicity in Isatis cappadocica and Erysimum allionii. These plants were exposed for 3 weeks to different concentrations (0, 400 and 800 μM) of As to measure fresh weight, total chlorophyll, proline and hydrogen peroxide (H2O2) content, As and S accumulation, and guaiacol peroxidase (POD) and glutathione S-transferase (GST) along with the supplementation of 20 mg L-1 of S and 500 μM of GSH. Results revealed the significant reduction of fresh weight (especially in E. allionii), activities of POD and GST enzymes and proline content as compare to control. However, the application of S and GSH enhanced the fresh weight. Inhibition in H2O2 accumulation and improvement in antioxidant responses were measured with the application of S and GSH. Hence, the supplementation of S and GSH enhanced fresh weight and total chlorophyll in both I. cappadocica and E. allionii by alleviating the adverse effects of As stress via decreased H2O2 content and restricted As uptake.
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Affiliation(s)
- Mitra Arianmehr
- Laboratory of Plant Physiology, Department of Biology, Faculty of Science, Razi University, Kermanshah, Iran
| | - Naser Karimi
- Laboratory of Plant Physiology, Department of Biology, Faculty of Science, Razi University, Kermanshah, Iran.
| | - Zahra Souri
- Laboratory of Plant Physiology, Department of Biology, Faculty of Science, Razi University, Kermanshah, Iran
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El-ramady H, Hajdú P, Törős G, Badgar K, Llanaj X, Kiss A, Abdalla N, Omara AE, Elsakhawy T, Elbasiouny H, Elbehiry F, Amer M, El-mahrouk ME, Prokisch J. Plant Nutrition for Human Health: A Pictorial Review on Plant Bioactive Compounds for Sustainable Agriculture. Sustainability 2022; 14:8329. [DOI: 10.3390/su14148329] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Is there any relationship between plant nutrition and human health? The overall response to this question is very positive, and a strong relationship between the nutrition of plants and humans has been reported in the literature. The nutritional status of edible plants consumed by humans can have a negative or positive impact on human health. This review was designed to assess the importance of plant bioactive compounds for human health under the umbrella of sustainable agriculture. With respect to the first research question, it was found that plant bioactives (e.g., alkaloids, carotenoids, flavonoids, phenolics, and terpenoids) have a crucial role in human health due to their therapeutic benefits, and their potentiality depends on several factors, including botanical, environmental, and clinical attributes. Plant bioactives could be produced using plant tissue culture tools (as a kind of agro-biotechnological method), especially in cases of underexploited or endangered plants. Bioactive production of plants depends on many factors, especially climate change (heat stress, drought, UV radiation, ozone, and elevated CO2), environmental pollution, and problematic soils (degraded, saline/alkaline, waterlogged, etc.). Under the previously mentioned stresses, in reviewing the literature, a positive or negative association was found depending on the kinds of stress or bioactives and their attributes. The observed correlation between plant bioactives and stress (or growth factors) might explain the importance of these bioactives for human health. Their accumulation in stressed plants can increase their tolerance to stress and their therapeutic roles. The results of this study are in keeping with previous observational studies, which confirmed that the human nutrition might start from edible plants and their bioactive contents, which are consumed by humans. This review is the first report that analyzes this previously observed relationship using pictorial presentation.
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Yang Z, Chen Z, He N, Yang D, Liu M. Effects of Silicon and Iron Application on Arsenic Absorption and Physiological Characteristics of Rice (Oryza sativa L.). Bull Environ Contam Toxicol 2022; 108:1046-1055. [PMID: 35244752 DOI: 10.1007/s00128-022-03476-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 02/10/2022] [Indexed: 06/14/2023]
Abstract
This study investigated the effects of silicon and iron on arsenic absorption, as well as the changes in the physiological indices of rice under arsenic stress and how these indices respond to silicon and iron. We found that application of silicon and iron reduces arsenic absorption in rice; co-application of silicon and iron reduced arsenic content by 25.6%-27.4%. The antioxidant enzyme activities of rice treated with silicon and iron were significantly lower than those of untreated rice, with the biggest decreases observed under co-application treatments. Iron significantly increased osmoregulatory substances, while silicon increased soluble sugar; Si1Fe1 treatment (containing 1 mM silicon, 0.1 mM iron) had the highest content of osmoregulatory substances except CK. Membership function analysis suggested that applying silicon and iron alone alleviates the stress condition in rice, with the lowest stresses observed under Si1Fe1 treatment. These results show that silicon and iron co-application significantly inhibits arsenic uptake in rice, decreases the antioxidant enzymes activity, while non-enzymatic substances in rice can be regulated to further alleviate arsenic stress.
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Affiliation(s)
- Zehui Yang
- College of Land and Environment, Shenyang Agricultural University, Shenyang, 110866, People's Republic of China
| | - Zexiao Chen
- College of Land and Environment, Shenyang Agricultural University, Shenyang, 110866, People's Republic of China
| | - Na He
- College of Land and Environment, Shenyang Agricultural University, Shenyang, 110866, People's Republic of China
| | - Dan Yang
- College of Land and Environment, Shenyang Agricultural University, Shenyang, 110866, People's Republic of China.
| | - Mingda Liu
- College of Land and Environment, Shenyang Agricultural University, Shenyang, 110866, People's Republic of China.
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Shabbaj II, Madany MMY, Balkhyour MA, Tammar A, AbdElgawad H. CO 2 Enrichment Differentially Upregulated Sugar, Proline, and Polyamine Metabolism in Young and Old Leaves of Wheat and Sorghum to Mitigate Indium Oxide Nanoparticles Toxicity. Front Plant Sci 2022; 13:843771. [PMID: 35592559 PMCID: PMC9112856 DOI: 10.3389/fpls.2022.843771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Accepted: 02/14/2022] [Indexed: 06/15/2023]
Abstract
Soil contamination with indium oxide nanoparticles (In2O3-NPs) is a challenge for plant growth and productivity. Despite In2O3-NPs toxicity, their effects on plant growth and metabolism are largely unknown, particularly under future climate CO2 (eCO2). Therefore, the In2O3-NPs toxicity and stress mitigating impact of eCO2 in the young and old leaves of C3 (wheat) and C4 (sorghum) plants were investigated. Overall, In2O3-NPs significantly retard the biomass and photosynthetic machinery of all tested crops, particularly the young leaves of C3 plants. Consequently, In2O3-NPs altered C and N metabolism in C3 and C4 plants. On the other hand, eCO2 contrarily alleviated the hazardous effects of In2O3-NPs on growth and photosynthesis, especially in the young leaves of C4 plants. Increased photosynthesis consequently enhanced the soluble sugars' accumulation and metabolism (e.g., sucrose P synthase, cytosolic, and vacuolar invertase) in all stressed plants, but to a greater extent in C4 young leaves. High sugar availability also induced TCA organic and fatty acids' accumulation. This also provided a route for amino acids and polyamines biosynthesis, where a clear increase in proline biosynthetic enzymes [e.g., pyrroline-5-carboxylate synthetase (P5CS), ornithine aminotransferase (OAT), Pyrroline-5-carboxylate reductase (P5CR), pyrroline-5-carboxylate dehydrogenase (P5CDH), and proline dehydrogenase (PRODH)] and polyamine metabolic enzymes (e.g., spermine and spermidine synthases, ornithine decarboxylase, and adenosyl methionine decarboxylase) were mainly recorded in C4 young leaves. The observed increases in these metabolites involved in osmo- and redox-regulation to reduce In2O3-NPs induced oxidative damage. Overall, our study, for the first time, shed light on how eCO2 differentially mitigated In2O3-NPs stress in old and young leaves of different species groups under the threat of In2O3-NPs contamination.
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Affiliation(s)
- Ibrahim I. Shabbaj
- Department of Environmental Sciences, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Mahmoud M. Y. Madany
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza, Egypt
- Department of Biology, College of Science, Taibah University, Medina, Saudi Arabia
| | - Mansour A. Balkhyour
- Department of Environmental Sciences, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Abdurazag Tammar
- Department of Environmental Sciences, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Hamada AbdElgawad
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, Antwerp, Belgium
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Lupitu A, Moisa C, Gavrilaş S, Dochia M, Chambre D, Ciutină V, Copolovici DM, Copolovici L. The Influence of Elevated CO 2 on Volatile Emissions, Photosynthetic Characteristics, and Pigment Content in Brassicaceae Plants Species and Varieties. Plants (Basel) 2022; 11:plants11070973. [PMID: 35406953 PMCID: PMC9002909 DOI: 10.3390/plants11070973] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 03/22/2022] [Accepted: 03/31/2022] [Indexed: 05/04/2023]
Abstract
Climate change will determine a sharp increase in carbon dioxide in the following years. To study the influence of elevated carbon dioxide on plants, we grew 13 different species and varieties from the Brassicaceae family at three carbon dioxide concentrations: 400, 800, and 1200 ppmv. The photosynthetic parameters (assimilation rate and stomatal conductance to water vapor) increase for all species. The emission of monoterpenes increases for plants grown at elevated carbon dioxide while the total polyphenols and flavonoids content decrease. The chlorophyll content is affected only for some species (such as Lipidium sativum), while the β-carotene concentrations in the leaves were not affected by carbon dioxide.
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Shabbaj II, AbdElgawad H, Balkhyour MA, Tammar A, Madany MMY. Elevated CO2 Differentially Mitigated Oxidative Stress Induced by Indium Oxide Nanoparticles in Young and Old Leaves of C3 and C4 Crops. Antioxidants (Basel) 2022; 11:antiox11020308. [PMID: 35204191 PMCID: PMC8868301 DOI: 10.3390/antiox11020308] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 01/22/2022] [Accepted: 01/23/2022] [Indexed: 01/24/2023] Open
Abstract
Soil contamination with indium (In) oxide nanoparticles (In2O3-NPs) threatens plant growth and development. However, their toxicity in plants under ambient (aCO2) and elevated (eCO2) conditions is scarcely studied. To this end, this study was conducted to investigate In2O3-NPs toxicity in the young and old leaves of C3 (barley) and C4 (maize) plants and to understand the mechanisms underlying the stress mitigating impact of eCO2. Treatment of C3 and C4 plants with In2O3-NPs significantly reduced growth and photosynthesis, induced oxidative damage (H2O2, lipid peroxidation), and impaired P and Fe homeostasis, particularly in the young leaves of C4 plants. On the other hand, this phytotoxic hazard was mitigated by eCO2 which improved both C3 and C4 growth, decreased In accumulation and increased phosphorus (P) and iron (Fe) uptake, particularly in the young leaves of C4 plants. Moreover, the improved photosynthesis by eCO2 accordingly enhanced carbon availability under the challenge of In2O3-NPs that were directed to the elevated production of metabolites involved in antioxidant and detoxification systems. Our physiological and biochemical analyses implicated the role of the antioxidant defenses, including superoxide dismutase (SOD) in stress mitigation under eCO2. This was validated by studying the effect of In2O3-stress on a transgenic maize line (TG) constitutively overexpressing the AtFeSOD gene and its wild type (WT). Although it did not alter In accumulation, the TG plants showed improved growth and photosynthesis and reduced oxidative damage. Overall, this work demonstrated that C3 was more sensitive to In2O3-NPs stress; however, C4 plants were more responsive to eCO2. Moreover, it demonstrated the role of SOD in determining the hazardous effect of In2O3-NPs.
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Affiliation(s)
- Ibrahim I. Shabbaj
- Department of Environmental Sciences, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah 21441, Saudi Arabia; (I.I.S.); (M.A.B.); (A.T.)
| | - Hamada AbdElgawad
- Department of Botany, Faculty of Science, Beni-Suef University, Beni-Suef 62511, Egypt;
- Integrated Molecular Plant Physiology Research, Department of Biology, University of Antwerp, 2020 Antwerp, Belgium
| | - Mansour A. Balkhyour
- Department of Environmental Sciences, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah 21441, Saudi Arabia; (I.I.S.); (M.A.B.); (A.T.)
| | - Abdurazag Tammar
- Department of Environmental Sciences, Faculty of Meteorology, Environment and Arid Land Agriculture, King Abdulaziz University, Jeddah 21441, Saudi Arabia; (I.I.S.); (M.A.B.); (A.T.)
| | - Mahmoud M. Y. Madany
- Department of Botany and Microbiology, Faculty of Science, Cairo University, Giza 12613, Egypt
- Biology Department, Faculty of Science, Taibah University, Al-Madinah Al-Munawarah 41411, Saudi Arabia
- Correspondence:
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Abstract
Plants detoxify toxic metal(loid)s by accumulating diverse metabolites. Beside scavenging excess reactive oxygen species (ROS) induced by metal(loid)s, some metabolites chelate metal(loid) ions. Classically, thiol-containing compounds, especially glutathione (GSH) and phytochelatins (PCs) are thought to be the major chelators that conjugate with metal(loid)s in the cytoplasm followed by transport and sequestration in the vacuole. In addition to this classical detoxification pathway, a role for secondary metabolites in metal(loid) detoxification has recently emerged. In particular, anthocyanins, a kind of flavonoids with ROS scavenging potential, contribute to enhanced arsenic tolerance in several plant species. Evidence is accumulating that, in analogy to GSH and PCs, anthocyanins may conjugate with arsenic followed by vacuolar sequestration in the detoxification event. Exogenous application or endogenous accumulation of anthocyanins enhances arsenic tolerance, leading to improved plant growth and productivity. The application of some plant hormones and signaling molecules stimulates endogenous anthocyanin synthesis which confers tolerance to arsenic stress. Anthocyanin biosynthesis is transcriptionally regulated by several transcription factors, including myeloblastosis (MYBs). The light-regulated transcription factor elongated hypocotyl 5 (HY5) also affects anthocyanin biosynthesis, but its role in arsenic tolerance remains elusive. Here, we review the mechanism of arsenic detoxification in plants and the potential role of anthocyanins in arsenic tolerance beyond the classical points of view. Our analysis proposes that anthocyanin manipulation in crop plants may ensure sustainable crop yield and food safety in the marginal lands prone to arsenic pollution.
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Affiliation(s)
- Golam Jalal Ahammed
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, 471023, Henan, China
| | - Youxin Yang
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits & Vegetables, Collaborative Innovation Center of Post-Harvest Key Technology and Quality Safety of Fruits and Vegetables, College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, China.
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Ahammed GJ, Guang Y, Yang Y, Chen J. Mechanisms of elevated CO 2-induced thermotolerance in plants: the role of phytohormones. Plant Cell Rep 2021; 40:2273-2286. [PMID: 34269828 DOI: 10.1007/s00299-021-02751-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 06/29/2021] [Indexed: 05/20/2023]
Abstract
Rising atmospheric CO2 is a key driver of climate change, intensifying drastic changes in meteorological parameters. Plants can sense and respond to changes in environmental parameters including atmospheric CO2 and temperatures. High temperatures beyond the physiological threshold can significantly affect plant growth and development and thus attenuate crop productivity. However, elevated atmospheric CO2 can mitigate the deleterious effects of heat stress on plants. Despite a large body of literature supporting the positive impact of elevated CO2 on thermotolerance, the underlying biological mechanisms and precise molecular pathways that lead to enhanced tolerance to heat stress remain largely unclear. Under heat stress, elevated CO2-induced expression of respiratory burst oxidase homologs (RBOHs) and reactive oxygen species (ROS) signaling play a critical role in stomatal movement, which optimizes gas exchange to enhance photosynthesis and water use efficiency. Notably, elevated CO2 also fortifies antioxidant defense and redox homeostasis to alleviate heat-induced oxidative damage. Both hormone-dependent and independent pathways have been shown to mediate high CO2-induced thermotolerance. The activation of heat-shock factors and subsequent expression of heat-shock proteins are thought to be the essential mechanism downstream of hormone and ROS signaling. Here we review the role of phytohormones in plant response to high atmospheric CO2 and temperatures. We also discuss the potential mechanisms of elevated CO2-induced thermotolerance by focusing on several key phytohormones such as ethylene. Finally, we address some limitations of our current understanding and the need for further research to unveil the yet-unknown crosstalk between plant hormones in mediating high CO2-induced thermotolerance in plants.
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Affiliation(s)
- Golam Jalal Ahammed
- College of Horticulture and Plant Protection, Henan University of Science and Technology, Luoyang, 471023, China
| | - Yelan Guang
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits and Vegetables, Collaborative Innovation Center of Post-Harvest Key Technology and Quality Safety of Fruits and Vegetables, College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, China
| | - Youxin Yang
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits and Vegetables, Collaborative Innovation Center of Post-Harvest Key Technology and Quality Safety of Fruits and Vegetables, College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, China.
| | - Jinyin Chen
- Jiangxi Key Laboratory for Postharvest Technology and Nondestructive Testing of Fruits and Vegetables, Collaborative Innovation Center of Post-Harvest Key Technology and Quality Safety of Fruits and Vegetables, College of Agronomy, Jiangxi Agricultural University, Nanchang, 330045, China.
- Pingxiang University, Pingxiang, Jiangxi, China.
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