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Lowry GV, Giraldo JP, Steinmetz NF, Avellan A, Demirer GS, Ristroph KD, Wang GJ, Hendren CO, Alabi CA, Caparco A, da Silva W, González-Gamboa I, Grieger KD, Jeon SJ, Khodakovskaya MV, Kohay H, Kumar V, Muthuramalingam R, Poffenbarger H, Santra S, Tilton RD, White JC. Towards realizing nano-enabled precision delivery in plants. NATURE NANOTECHNOLOGY 2024; 19:1255-1269. [PMID: 38844663 DOI: 10.1038/s41565-024-01667-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Accepted: 03/27/2024] [Indexed: 09/18/2024]
Abstract
Nanocarriers (NCs) that can precisely deliver active agents, nutrients and genetic materials into plants will make crop agriculture more resilient to climate change and sustainable. As a research field, nano-agriculture is still developing, with significant scientific and societal barriers to overcome. In this Review, we argue that lessons can be learned from mammalian nanomedicine. In particular, it may be possible to enhance efficiency and efficacy by improving our understanding of how NC properties affect their interactions with plant surfaces and biomolecules, and their ability to carry and deliver cargo to specific locations. New tools are required to rapidly assess NC-plant interactions and to explore and verify the range of viable targeting approaches in plants. Elucidating these interactions can lead to the creation of computer-generated in silico models (digital twins) to predict the impact of different NC and plant properties, biological responses, and environmental conditions on the efficiency and efficacy of nanotechnology approaches. Finally, we highlight the need for nano-agriculture researchers and social scientists to converge in order to develop sustainable, safe and socially acceptable NCs.
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Affiliation(s)
- Gregory V Lowry
- Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, PA, USA.
| | - Juan Pablo Giraldo
- Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA.
| | - Nicole F Steinmetz
- Department of NanoEngineering, University of California San Diego, San Diego, CA, USA
- Department of Bioengineering, University of California San Diego, San Diego, CA, USA
- Department of Radiology, University of California San Diego, San Diego, CA, USA
- Center for Nano-ImmunoEngineering, University of California San Diego, San Diego, CA, USA
- Shu and K.C. Chien and Peter Farrell Collaboratory, University of California San Diego, San Diego, CA, USA
- Center for Engineering in Cancer, Institute of Engineering in Medicine, University of California San Diego, San Diego, CA, USA
- Moores Cancer Center, University of California, University of California San Diego, San Diego, CA, USA
- Institute for Materials Discovery and Design, University of California San Diego, San Diego, CA, USA
| | | | - Gozde S Demirer
- Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, USA
| | - Kurt D Ristroph
- Agricultural and Biological Engineering, Purdue University, West Lafayette, IN, USA
| | - Gerald J Wang
- Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Christine O Hendren
- Geological and Environmental Sciences, Appalachian State University, Boone, NC, USA
| | | | - Adam Caparco
- Department of NanoEngineering, University of California San Diego, San Diego, CA, USA
| | | | | | - Khara D Grieger
- Applied Ecology, North Carolina State University, Raleigh, NC, USA
| | - Su-Ji Jeon
- Botany and Plant Sciences, University of California, Riverside, Riverside, CA, USA
| | | | - Hagay Kohay
- Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Vivek Kumar
- Civil and Environmental Engineering, Carnegie Mellon University, Pittsburgh, PA, USA
| | | | | | - Swadeshmukul Santra
- Department of Chemistry and Burnett School of Biomedical Sciences, University of Central Florida, Orlando, FL, USA
| | - Robert D Tilton
- Chemical Engineering and Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Jason C White
- The Connecticut Agricultural Research Station, New Haven, CT, USA
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Madlala NC, Khanyile N, Masenya A. Examining the Correlation between the Inorganic Nano-Fertilizer Physical Properties and Their Impact on Crop Performance and Nutrient Uptake Efficiency. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:1263. [PMID: 39120369 PMCID: PMC11314324 DOI: 10.3390/nano14151263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Revised: 07/19/2024] [Accepted: 07/24/2024] [Indexed: 08/10/2024]
Abstract
The physical properties of nano-fertilizers (NFs) are important in determining their performance, efficacy, and environmental interactions. Nano-fertilizers, due to their small size and high surface area-to-volume ratio, enhance plant metabolic reactions, resulting in higher crop yields. The properties of nano-fertilizers depend on the synthesis methods used. The nanoparticle's nutrient use efficiency (NUE) varies among plant species. This review aims to analyze the relationship between the physical properties of NF and their influence on crop performance and nutrient uptake efficiency. The review focuses on the physical properties of NFs, specifically their size, shape, crystallinity, and agglomeration. This review found that smaller particle-sized nanoparticles exhibit higher nutrient use efficiency than larger particles. Nano-fertilizer-coated additives gradually release nutrients, reducing the need for frequent application and addressing limitations associated with chemical fertilizer utilization. The shapes of nano-fertilizers have varying effects on the overall performance of plants. The crystalline structure of nanoparticles promotes a slow release of nutrients. Amorphous nano-fertilizers improve the NUE and, ultimately, crop yield. Agglomeration results in nanoparticles losing their nanoscale size, accumulating on the outer surface, and becoming unavailable to plants. Understanding the physical properties of nano-fertilizers is crucial for optimizing their performance in agricultural applications.
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Affiliation(s)
| | - Nokuthula Khanyile
- School of Chemical and Physical Sciences, University of Mpumalanga, Mbombela 1200, South Africa
| | - Absalom Masenya
- School of Agricultural Sciences, University of Mpumalanga, Mbombela 1200, South Africa (A.M.)
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Hafeez R, Guo J, Ahmed T, Jiang H, Raza M, Shahid M, Ibrahim E, Wang Y, Wang J, Yan C, An Q, White JC, Li B. Bio-formulated chitosan nanoparticles enhance disease resistance against rice blast by physiomorphic, transcriptional, and microbiome modulation of rice (Oryza sativa L.). Carbohydr Polym 2024; 334:122023. [PMID: 38553222 DOI: 10.1016/j.carbpol.2024.122023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 02/20/2024] [Accepted: 03/03/2024] [Indexed: 04/02/2024]
Abstract
Rice blast disease (RBD) caused by Magnaporthe oryzae, threaten food security by cutting agricultural output. Nano agrochemicals are now perceived as sustainable, cost-effective alternatives to traditional pesticides. This study investigated bioformulation of moringa chitosan nanoparticles (M-CsNPs) and their mechanisms for suppressing RBD while minimizing toxic effects on the microenvironment. M-CsNPs, sized 46 nm with semi-spherical morphology, significantly suppressed pathogen growth, integrity, and colonization at 200 mg L-1in vitro. Greenhouse tests with foliar exposure to the same concentration resulted in a substantial 77.7 % reduction in RBD, enhancing antioxidant enzyme activity and plant health. Furthermore, M-CsNPs improved photosynthesis, gas exchange, and the nutritional profile of diseased rice plants. RNA-seq analysis highlighted upregulated defense-related genes in treated rice plants. Metagenomic study showcased reshaping of the rice microbiome, reducing Magnaporthe abundance by 93.5 %. Both healthy and diseased rice plants showed increased microbial diversity, particularly favoring specific beneficial species Thiobacillus, Nitrospira, Nocardioides, and Sphingomicrobium in the rhizosphere and Azonexus, Agarivorans, and Bradyrhizobium in the phyllosphere. This comprehensive study unravels the diverse mechanisms by which M-CsNPs interact with plants and pathogens, curbing M. oryzae damage, promoting plant growth, and modulating the rice microbiome. It underscores the significant potential for effective plant disease management.
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Affiliation(s)
- Rahila Hafeez
- State Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Junning Guo
- State Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Temoor Ahmed
- State Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China; Xianghu Laboratory, Hangzhou 311231, China; MEU Research Unit, Middle East University, Amman, Jordan
| | - Hubiao Jiang
- State Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Mubashar Raza
- Key Laboratory of Integrated Pest Management on Crops in Northwestern Oasis, Ministry of Agriculture and Rural Affairs, Institute of Plant Protection, Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang 830091, China
| | - Muhammad Shahid
- Department of Bioinformatics and Biotechnology, Government College University, Faisalabad 38000, Pakistan
| | - Ezzeldin Ibrahim
- State Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Yanli Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Jiaoyu Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China.
| | - Chengqi Yan
- Crop Institute, Ningbo Academy of Agricultural Sciences, Ningbo 315040, China
| | - Qianli An
- State Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China
| | - Jason C White
- The Connecticut Agricultural Experiment Station, New Haven, CT, USA.
| | - Bin Li
- State Key Laboratory of Rice Biology and Breeding, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China.
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4
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Vaidya S, Deng C, Wang Y, Zuverza-Mena N, Dimkpa C, White JC. Nanotechnology in agriculture: A solution to global food insecurity in a changing climate? NANOIMPACT 2024; 34:100502. [PMID: 38508516 DOI: 10.1016/j.impact.2024.100502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 02/28/2024] [Accepted: 03/17/2024] [Indexed: 03/22/2024]
Abstract
Although the Green Revolution dramatically increased food production, it led to non- sustainable conventional agricultural practices, with productivity in general declining over the last few decades. Maintaining food security with a world population exceeding 9 billion in 2050, a changing climate, and declining arable land will be exceptionally challenging. In fact, nothing short of a revolution in how we grow, distribute, store, and consume food is needed. In the last ten years, the field of nanotoxicology in plant systems has largely transitioned to one of sustainable nano-enabled applications, with recent discoveries on the use of this advanced technology in agriculture showing tremendous promise. The range of applications is quite extensive, including direct application of nanoscale nutrients for improved plant health, nutrient biofortification, increased photosynthetic output, and greater rates of nitrogen fixation. Other applications include nano-facilitated delivery of both fertilizers and pesticides; nano-enabled delivery of genetic material for gene silencing against viral pathogens and insect pests; and nanoscale sensors to support precision agriculture. Recent efforts have demonstrated that nanoscale strategies increase tolerance to both abiotic and biotic stressors, offering realistic potential to generate climate resilient crops. Considering the efficiency of nanoscale materials, there is a need to make their production more economical, alongside efficient use of incumbent resources such as water and energy. The hallmark of many of these approaches involves much greater impact with far less input of material. However, demonstrations of efficacy at field scale are still insufficient in the literature, and a thorough understanding of mechanisms of action is both necessary and often not evident. Although nanotechnology holds great promise for combating global food insecurity, there are far more ways to do this poorly than safely and effectively. This review summarizes recent work in this space, calling out existing knowledge gaps and suggesting strategies to alleviate those concerns to advance the field of sustainable nano-enabled agriculture.
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Affiliation(s)
- Shital Vaidya
- Connecticut Agricultural Experiment Station (CAES), New Haven, CT 06511, United States
| | - Chaoyi Deng
- Connecticut Agricultural Experiment Station (CAES), New Haven, CT 06511, United States
| | - Yi Wang
- Connecticut Agricultural Experiment Station (CAES), New Haven, CT 06511, United States
| | - Nubia Zuverza-Mena
- Connecticut Agricultural Experiment Station (CAES), New Haven, CT 06511, United States
| | - Christian Dimkpa
- Connecticut Agricultural Experiment Station (CAES), New Haven, CT 06511, United States
| | - Jason C White
- Connecticut Agricultural Experiment Station (CAES), New Haven, CT 06511, United States.
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Steven B, Hassani MA, LaReau JC, Wang Y, White JC. Nanoscale sulfur alters the bacterial and eukaryotic communities of the tomato rhizosphere and their interactions with a fungal pathogen. NANOIMPACT 2024; 33:100495. [PMID: 38246247 DOI: 10.1016/j.impact.2024.100495] [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: 11/07/2023] [Revised: 01/16/2024] [Accepted: 01/17/2024] [Indexed: 01/23/2024]
Abstract
Nanoformulations of sulfur have demonstrated the potential to enhance plant growth and reduce disease incidence when plants are confronted with pathogens. However, the impact of nanoscale sulfur on microbial communities in close contact with the plant root, known as the rhizosphere, remain poorly characterized. In this study, we investigate the impact of three formulations of sulfur; bulk sulfur, uncoated (pristine) sulfur nanoparticles, and stearic acid coated sulfur nanoparticles, on the rhizosphere of tomato plants. Tomato plants were additionally challenged by the pathogenic fungus Fusarium oxysporum f. sp. Lycopersici. Employing bacterial 16S rRNA gene sequencing, along with recently in-house designed peptide nucleic acid clamps to facilitate the recovery of microeukaryote sequences, we performed a comprehensive survey of rhizosphere microbial populations. We found the largest influence on the composition of the rhizosphere microbiome was the presence of the fungal pathogen. However, sulfur amendments also drove state changes in the rhizosphere populations; for example, enriching the relative abundance of the plant-beneficial sulfur-oxidizing bacterium Thiobacillus. Notably, when investigating the response of the rhizosphere community to the different sulfur amendments, there was a strong interaction between the fungal pathogen and sulfur treatments. This resulted in different bacterial and eukaryotic taxa being enriched in association with the different forms of sulfur, which was dependent on the presence of the pathogen. These data point to nano formulations of sulfur exerting unique shifts in the rhizosphere community compared to bulk sulfur, particularly in association with a plant pathogen, and have implications for the sustainable use of nanoscale strategies in sustainable agriculture.
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Affiliation(s)
- Blaire Steven
- Department of Environmental Science and Forestry, Connecticut Agricultural Experiment Station, New Haven, CT, USA.
| | - M Amine Hassani
- Department of Plant Pathology and Ecology, Connecticut Agricultural Experiment Station, New Haven, CT, USA
| | - Jacquelyn C LaReau
- Department of Environmental Science and Forestry, Connecticut Agricultural Experiment Station, New Haven, CT, USA
| | - Yi Wang
- Department of Analytical Chemistry, Connecticut Agricultural Experiment Station, New Haven, CT, USA
| | - Jason C White
- Department of Analytical Chemistry, Connecticut Agricultural Experiment Station, New Haven, CT, USA
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6
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Deng C, Protter CR, Wang Y, Borgatta J, Zhou J, Wang P, Goyal V, Brown HJ, Rodriguez-Otero K, Dimkpa CO, Hernandez R, Hamers RJ, White JC, Elmer WH. Nanoscale CuO charge and morphology control Fusarium suppression and nutrient biofortification in field-grown tomato and watermelon. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 905:167799. [PMID: 37838047 DOI: 10.1016/j.scitotenv.2023.167799] [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: 08/30/2023] [Revised: 10/08/2023] [Accepted: 10/11/2023] [Indexed: 10/16/2023]
Abstract
Limited data exist on how surface charge and morphology impact the effectiveness of nanoscale copper oxide (CuO) as an agricultural amendment under field conditions. This study investigated the impact of these factors on tomatoes and watermelons following foliar treatment with CuO nanosheets (NS-) or nanospikes (NP+ and NP-) exhibiting positive or negative surface charge. Results showed plant species-dependent benefits. Notably, tomatoes infected with Fusarium oxysporum had significantly reduced disease progression when treated with NS-. Watermelons benefited similarly from NP+. Although disease suppression was significant and trends indicated increased yield, the yield effects weren't statistically significant. However, several nanoscale treatments significantly enhanced the fruit's nutritional value, and this nano-enabled biofortification was a function of particle charge and morphology. Negatively charged nanospikes significantly increased the Fe content of healthy watermelon and tomato (20-28 %) and Ca in healthy tomato (66 %), compared to their positively charged counterpart. Negatively charged nanospikes also outperformed negatively charged nanosheets, leading to significant increases in the content of S and Mg in infected watermelon (37-38 %), Fe in healthy watermelon (58 %), and Ca (42 %) in healthy tomato. These findings highlight the potential of tuning nanoscale CuO chemistry for disease suppression and enhanced food quality under field conditions.
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Affiliation(s)
- Chaoyi Deng
- Department of Analytical Chemistry, The Connecticut Agricultural Experiment Station, New Haven, CT 06504, United States; Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, United States; Department of Chemistry, Johns Hopkins University, Baltimore, MD 21218, United States
| | - Connor R Protter
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, United States
| | - Yi Wang
- Department of Analytical Chemistry, The Connecticut Agricultural Experiment Station, New Haven, CT 06504, United States
| | - Jaya Borgatta
- Department of Analytical Chemistry, The Connecticut Agricultural Experiment Station, New Haven, CT 06504, United States
| | - Jingyi Zhou
- Department of Analytical Chemistry, The Connecticut Agricultural Experiment Station, New Haven, CT 06504, United States
| | - Peiying Wang
- Department of Analytical Chemistry, The Connecticut Agricultural Experiment Station, New Haven, CT 06504, United States
| | - Vinod Goyal
- Department of Botany & Plant Physiology, CCS Haryana Agricultural University, Hisar 125004, India
| | - Hannah J Brown
- Agronomy Department, University of Florida, Gainesville, FL 32603, United States
| | | | - Christian O Dimkpa
- Department of Analytical Chemistry, The Connecticut Agricultural Experiment Station, New Haven, CT 06504, United States
| | - Rigoberto Hernandez
- Department of Chemistry, Johns Hopkins University, Baltimore, MD 21218, United States
| | - Robert J Hamers
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, United States
| | - Jason C White
- Department of Analytical Chemistry, The Connecticut Agricultural Experiment Station, New Haven, CT 06504, United States.
| | - Wade H Elmer
- Department of Plant Pathology and Ecology, The Connecticut Agricultural Experiment Station, New Haven, CT 06504, United States
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Goyal V, Rani D, Ritika, Mehrotra S, Deng C, Wang Y. Unlocking the Potential of Nano-Enabled Precision Agriculture for Efficient and Sustainable Farming. PLANTS (BASEL, SWITZERLAND) 2023; 12:3744. [PMID: 37960100 PMCID: PMC10649170 DOI: 10.3390/plants12213744] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 10/19/2023] [Accepted: 10/20/2023] [Indexed: 11/15/2023]
Abstract
Nanotechnology has attracted remarkable attention due to its unique features and potential uses in multiple domains. Nanotechnology is a novel strategy to boost production from agriculture along with superior efficiency, ecological security, biological safety, and monetary security. Modern farming processes increasingly rely on environmentally sustainable techniques, providing substitutes for conventional fertilizers and pesticides. The drawbacks inherent in traditional agriculture can be addressed with the implementation of nanotechnology. Nanotechnology can uplift the global economy, so it becomes essential to explore the application of nanoparticles in agriculture. In-depth descriptions of the microbial synthesis of nanoparticles, the site and mode of action of nanoparticles in living cells and plants, the synthesis of nano-fertilizers and their effects on nutrient enhancement, the alleviation of abiotic stresses and plant diseases, and the interplay of nanoparticles with the metabolic processes of both plants and microbes are featured in this review. The antimicrobial activity, ROS-induced toxicity to cells, genetic damage, and growth promotion of plants are among the most often described mechanisms of operation of nanoparticles. The size, shape, and dosage of nanoparticles determine their ability to respond. Nevertheless, the mode of action of nano-enabled agri-chemicals has not been fully elucidated. The information provided in our review paper serves as an essential viewpoint when assessing the constraints and potential applications of employing nanomaterials in place of traditional fertilizers.
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Affiliation(s)
- Vinod Goyal
- Department of Botany and Plant Physiology, CCS Haryana Agricultural University, Hisar 125004, Haryana, India
| | - Dolly Rani
- Department of Microbiology, CCS Haryana Agricultural University, Hisar 125004, Haryana, India
| | - Ritika
- Department of Microbiology, CCS Haryana Agricultural University, Hisar 125004, Haryana, India
| | - Shweta Mehrotra
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science and Technology, Hisar 125001, Haryana, India
| | - Chaoyi Deng
- Department of Analytical Chemistry, Connecticut Agricultural Experiment Station, New Haven, CT 06511, USA; (C.D.); (Y.W.)
| | - Yi Wang
- Department of Analytical Chemistry, Connecticut Agricultural Experiment Station, New Haven, CT 06511, USA; (C.D.); (Y.W.)
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Zhuang Q, Liu Q, Sun Y, Fu J, Tang S, Sharma S, Dhankher OP, Yuan H. Influence of nanoscale sulfur on mercury accumulation and plant growth in oilseed rape seedlings ( Brassica napus L.) grown on mercury-contaminated soil. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2023; 26:524-534. [PMID: 37641540 DOI: 10.1080/15226514.2023.2251596] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
Mercury (Hg) pollution has seriously threatened the crop productivity and food security. In the present research, experiments were conducted to assess the influence of nanoscale sulfur/sulfur nanoparticles and the corresponding bulk and ionic sulfur forms on the growth and Hg accumulation of oilseed rape seedlings grown on Hg-contaminated soil, as well as the transformation of soil Hg fractions. The results showed a significant reduction in fresh biomass for seedlings grown on 80-200 mg/kg Hg-polluted soil after 30 days. At 120 mg/kg Hg treatment, 100-300 mg/kg sulfur nanoparticles (SNPs) application counteracted Hg toxicity more effectively compared to the corresponding bulk sulfur particles (BSPs) and ionic sulfur (sulfate) treatments. The seedlings treated with 120 mg/kg Hg + 300 mg/kg SNPs gained 54.2 and 56.9% more shoot and root biomass, respectively, compared to those treated with Hg alone. Meanwhile, 300 mg/kg SNPs application decreased Hg accumulation by 18.9 and 76.5% in shoots and roots, respectively, relative to Hg alone treatment.SNPs treatment caused more Hg to be blocked in the soil and accumulating significantly less Hg in plants as compared to other S forms. The chemical fractions of Hg in the soil were subsequently investigated, and the solubility of Hg was significantly decreased by applying SNPs to the soil. Especially 200-300 mg/kg SNPs treatments caused the ratio of the soluble/exchangeable and the specifically absorbed fraction to be the lowest, accounting for 1.95-4.13% of the total Hg of soil. These findings suggest that adding SNPs to Hg-contaminated soils could be an effective measure for immobilizing soluble Hg and decreasing the Hg concentration in the edible parts of crops. The results of the current study hold promise for the practical application of SNPs to Hg-contaminated farmland for better yields and simultaneously increasing the food safety.
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Affiliation(s)
- Qiurong Zhuang
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, China
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Nanjing, China
| | - Qingquan Liu
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, China
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Nanjing, China
| | - Yuming Sun
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, China
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Nanjing, China
| | - Jiahao Fu
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, China
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Nanjing, China
| | - Shijie Tang
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, China
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Nanjing, China
| | - Sudhir Sharma
- Stockbridge School of Agriculture, University of MA Amherst, Amherst, MA, USA
| | - Om Parkash Dhankher
- Stockbridge School of Agriculture, University of MA Amherst, Amherst, MA, USA
| | - Haiyan Yuan
- Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing, China
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Nanjing, China
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