Recent progress in bio-mediated synthesis and applications of engineered nanomaterials for sustainable agriculture

Bora, Kainat Amin Ismail; Hashmi, Saud; Zulfiqar, Faisal; Abideen, Zainul; Ali, Haibat; Siddiqui, Zamin Shaheed; Siddique, Kadambot H.M.

doi:10.3389/fpls.2022.999505

Cited by 14 publications

(6 citation statements)

References 156 publications

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“…Numerous researchers have documented the biological (positive or negative) effects of ENMs on plant growth which depends on plant species tested, the properties of NPs, including size, functional groups, concentrations, as well as application methods of NPs ( Gui et al., 2015 ; Bora et al., 2022 ). Among these, different application methods have been explored for nano fertilization to achieve the best promotion effect in the literature, including root irrigation, foliar application, stem injection, and seed presowing treatment.…”

Section: Introductionmentioning

confidence: 99%

Favorable physiological and morphological effects of molybdenum nanoparticles on tobacco (Nicotiana tabacum L.): root irrigation is superior to foliar spraying

Chen,

Yin,

Zhu

et al. 2023

Front. Plant Sci.

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IntroductionNano fertilizers can provide efficient solutions to the increasing problem of nutrient deficiency caused by low availability. However, the most important prerequisite is to fully understand whether nanomaterials induce phytotoxicity in plants under a variety of different conditions. The mechanisms underlying interactions between molybdenum nanoparticles (Mo NPs) and plants with respect to their uptake and biological effects on crops are still not fully understood.MethodsIn this study, the impacts of Mo NPs over a range of concentrations (0, 25, and 100 μg/mL) on tobacco (Nicotiana tabacum L.) seedling growth were comparatively evaluated under foliar applications and root irrigation.ResultsThe results indicated that more significant active biological effects were observed with root irrigation application of Mo NPs than with foliar spraying. The agronomic attributes, water content and sugar content of Mo NPs-exposed seedlings were positively affected, and morphologically, Mo NPs induced root cell lignification and more vascular bundles and vessels in tobacco tissues, especially when applied by means of root irrigation. Moreover, the photosynthetic rate was improved by 131.4% for root exposure to 100 μg/mL Mo NPs, mainly due to the increased chlorophyll content and stomatal conductance. A significant concentration-dependent increase in malonaldehyde (MDA) and defensive enzyme activity for the Mo NPs-treated tobacco seedlings were detected compared to the controls. Significantly improved absorption of Mo by exposed tobacco seedlings was confirmed with inductively coupled plasma mass spectrometry (ICP-MS) in tobacco tissues, regardless of application method. However, the accumulation of Mo in roots increased by 13.94 times, when roots were exposed to 100 mg/L Mo NPs, higher than that under treatment with foliar spray. Additionally, Mo NPs activated the expression of several genes related to photosynthesis and aquaporin processes.DiscussionThe present investigations offer a better understanding of Mo NPs-plant interactions in terrestrial ecosystems and provide a new strategy for the application of Mo NPs as nano fertilizers in crop production.

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Section: Introductionmentioning

confidence: 99%

Favorable physiological and morphological effects of molybdenum nanoparticles on tobacco (Nicotiana tabacum L.): root irrigation is superior to foliar spraying

Chen,

Yin,

Zhu

et al. 2023

Front. Plant Sci.

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“…Despite being a micronutrient, Si is catered as an additional input besides the primary (N, P, K) and secondary nutrient (Ca, Mg and S) applications. In modern agro-systems, various fertilizers and fertilizing products are applied judiciously: organic and organo-mineral fertilizers, mineral fertilizers, inhibitors (improves nutrient use efficiency), liming materials (acidic soil corrective agent), organic soil improvers (soil water retention, soil physical structure and increase organic matter) and plant bio-stimulants (converts nutrient into plant available form, accelerate growth, improve tolerance to stresses and crop quality) 83,84 . A balanced plant nutrition is key towards production, nevertheless, the heavy reliance on agrochemicals to increase yield and subsequent productivity poses adverse effects to the environment and the engaging agro-system.…”

Section: Discussionmentioning

confidence: 99%

Green synthesis and characterization of UKMRC-8 rice husk-derived mesoporous silica nanoparticle for agricultural application

Dorairaj

Govender

Zakaria

et al. 2022

Sci Rep

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Agriculture plays a crucial role in safeguarding food security, more so as the world population increases gradually. A productive agricultural system is supported by seed, soil, fertiliser and good management practices. Food productivity directly correlates to the generation of solid wastes and utilization of agrochemicals, both of which negatively impact the environment. The rice and paddy industry significantly adds to the growing menace of waste management. In low and middle-income countries, rice husk (RH) is an underutilized agro-waste discarded in landfills or burned in-situ. RH holds enormous potential in the development of value-added nanomaterials for agricultural applications. In this study, a simple and inexpensive sol–gel method is described to extract mesoporous silica nanoparticles (MSNs) from UKMRC8 RH using the bottom-up approach. RHs treated with hydrochloric acid were calcinated to obtain rice husk ash (RHA) with high silica purity (> 98% wt), as determined by the X-ray fluorescence analysis (XRF). Calcination at 650 °C for four hours in a box furnace yielded RHA that was devoid of metal impurities and organic matter. The X-ray diffraction pattern showed a broad peak at 2θ≈20–22 °C and was free from any other sharp peaks, indicating the amorphous property of the RHA. Scanning electron micrographs (SEM) showed clusters of spherically shaped uniform aggregates of silica nanoparticles (NPs) while transmission electron microscopy analysis indicated an average particle size of < 20 nm. Besides Energy Dispersive X-Ray which validated the chemical constituent of the silica NPs, the Fourier transform infrared (FT-IR) spectra showed peaks at 796.4 cm−1 and 1052 cm−1 corresponding to O–Si–O symmetric stretching vibration and O–Si–O asymmetric stretching, respectively. The Brunauer–Emmet–Teller (BET) analysis indicated an average pore size = 8.5 nm while the specific surface area and the pore volume were 300.2015 m2/g and 0.659078 cm3/g, respectively. In conclusion, agrowaste-derived MSN was synthesized using a simple and economical sol–gel method without the addition of surfactant reagents for controlled formation at the structural level. Owing to the MSNs’ excellent physical properties, the method established herein, could be used singly (without any modifications) for the functionalization of a myriad of agrochemicals.

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“…The practical utilization of the accumulated theoretical knowledge regarding plant–NM interactions is a desirable goal. Newer nano-based procedures are being developed, for use in areas such as plant genetic transformation, sensor development, priming, nutrition, and phytostimulation, thus presenting huge potential to improve plant production for different goals ( Aguirre-Becerra et al , 2022 ; Bora et al , 2022 ; Chakraborty et al , 2023 ; Guleria et al , 2023 ).…”

Section: Application Of Theoretical Knowledge About Plant–nm Interact...mentioning

confidence: 99%

Multilevel approach to plant–nanomaterial relationships: from cells to living ecosystems

Oliveira

Seabra

Kondak

et al. 2023

Journal of Experimental Botany

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Due to their unique properties, nanomaterials (NMs) behave peculiarly in biosystems. Regarding plants, the interactions of NMs can be interpreted on a spatial scale: from local interactions in cells to systemic effects on whole plants and on ecosystems. Interpreted on a time scale, the effects of NMs on plants may be immediate or subsequent. At the cellular level, the composition and structure of the cell wall and membranes are modified by NMs, promoting internalization. The effects of NMs on germination and seedling physiology and on the primary and secondary metabolisms in the shoot are realized at organ and organism levels. Nanomaterials interact with the beneficial ecological partners of plants. The effects of NMs on plant growth-promoting rhizobacteria and legume-rhizobia symbiosis can be stimulating or inhibitory, depending on the concentration and type of NM. Nanomaterials exert a negative effect on arbuscular mycorrhiza, and vice versa. Pollinators are exposed to NMs, which may affect plant reproduction. The substances released by the roots influence the availability of NMs in the rhizosphere and components of plant cells trigger internalization, translocation, and transformation of NMs. Understanding of the multilevel and bidirectional relationship between plants and NMs is of great relevance in practice.

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Recent progress in bio-mediated synthesis and applications of engineered nanomaterials for sustainable agriculture

Cited by 14 publications

References 156 publications

Favorable physiological and morphological effects of molybdenum nanoparticles on tobacco (Nicotiana tabacum L.): root irrigation is superior to foliar spraying

Favorable physiological and morphological effects of molybdenum nanoparticles on tobacco (Nicotiana tabacum L.): root irrigation is superior to foliar spraying

Green synthesis and characterization of UKMRC-8 rice husk-derived mesoporous silica nanoparticle for agricultural application

Multilevel approach to plant–nanomaterial relationships: from cells to living ecosystems

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