Drought stress amelioration in plants using green synthesised iron oxide nanoparticles

Sreelakshmi, B.; Induja, S.; Adarsh, P; Rahul, H.L.; Arya, S.; Aswana, S.; Haripriya, R.; Aswathy, B.; Manoj, P K; Vishnudasan, Dalia

doi:10.1016/j.matpr.2020.05.801

Cited by 37 publications

(11 citation statements)

References 22 publications

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“…Iron oxide nanoparticles resulted in accumulated soluble sugar contents when plants were drought-stressed. However, iron also stimulates the redox process and chlorophyll biosynthesis in plants, thus should have helped to increase leaf chlorophyll and soluble sugar contents [88,89]. Similar results were reported in stressed cotton plants, but the used nSi concentration that resulted in the highest soluble sugar contents was 3200 mg•L −1 [90]; about 16-fold of what has been used in the present study.…”

Section: Discussionsupporting

confidence: 82%

Foliar Application of Nano-Silicon Improves the Physiological and Biochemical Characteristics of ‘Kalamata’ Olive Subjected to Deficit Irrigation in a Semi-Arid Climate

Hassan¹,

Ajaj

Gaballah³

et al. 2022

Plants

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In Egypt’s arid and semi-arid lands where the main olive production zone is located, evapotranspiration is higher than rainfall during winter. Limited research has used nanomaterials, especially nano-silicon (nSi) to improve the growth, development, and productivity of drought-stressed fruit trees, amid the global water scarcity problem. To assess the role of nSi on drought-sensitive ‘Kalamata’ olive tree growth, and biochemical and physiological changes under drought conditions, a split-plot experiment was conducted in a randomized complete block design. The trees were foliar sprayed with nSi in the field using nine treatments (three replicates each) of 0, 150, and 200 mg.L−1 under different irrigation regimes (100, 90, and 80% irrigation water requirements ‘IWR’) during the 2020 and 2021 seasons. Drought negatively affected the trees, but both concentrations of nSi alleviated drought effects at reduced irrigation levels, compared to the non-stressed trees. Foliar spray of both concentrations of nSi at a moderate level (90% IWR) of drought resulted in improved yield and fruit weight and reduced fruit drop percentage, compared to 80% IWR. In addition, there were reduced levels of osmoprotectants such as proline, soluble sugars, and abscisic acid (ABA) with less membrane damage expressed as reduced levels of malondialdehyde (MDA), H2O2 and electrolyte leakage at 90% compared to 80% IWR. These results suggest that ‘Kalamata’ olive trees were severely stressed at 80% compared to 90% IWR, which was not surprising as it is classified as drought sensitive. Overall, the application of 200 mg.L−1 nSi was beneficial for the improvement of the mechanical resistance, growth, and productivity of moderately-stressed (90% IWR) ‘Kalamata’ olive trees under the Egyptian semi-arid conditions.

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Section: Discussionsupporting

confidence: 82%

Foliar Application of Nano-Silicon Improves the Physiological and Biochemical Characteristics of ‘Kalamata’ Olive Subjected to Deficit Irrigation in a Semi-Arid Climate

Hassan¹,

Ajaj

Gaballah³

et al. 2022

Plants

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“…Iannone et al (2021) observed that magnetite nanoparticles coated with citric acid stimulated the growth of soybean and alfalfa plants with no effects on the levels of H 2 O 2 and MDA [ 54 ]. In another study, iron oxide nanoparticles synthesized from the seaweed Chaetomorpha antennina , especially those coated with citrate, reduced drought stress on Setaria italica plants with the increase of biomass production and absence of toxic effects [ 55 ].…”

Section: Discussionmentioning

confidence: 99%

Effects of biogenic silver and iron nanoparticles on soybean seedlings (Glycine max)

et al. 2022

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Background Biogenic metallic nanoparticles have been emerging as a promising alternative for the control of phytopathogens and as nanofertilizers. In this way, it is essential to investigate the possible impacts of these new nanomaterials on plants. In this study, the effects of soil contamination with biogenic silver (AgNPs) and iron (FeNPs) with known antifungal potential were investigated on morphological, physiological and biochemical parameters of soybean seedlings. Results The exposure of plants/seedlings to AgNPs induced the reduction of root dry weight followed by oxidative stress in this organ, however, adaptive responses such as a decrease in stomatal conductance without impacts on photosynthesis and an increase in intrinsic water use efficiency were also observed. The seedlings exposed to FeNPs had shown an increase in the levels of oxygen peroxide in the leaves not accompanied by lipid peroxidation, and an increase in the expression of POD2 and POD7 genes, indicating a defense mechanism by root lignification. Conclusion Our results demonstrated that different metal biogenic nanoparticles cause different effects on soybean seedlings and these findings highlight the importance of investigating possible phytotoxic effects of these nanomaterials for the control of phytopathogens or as nanofertilizers.

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“…Although many studies have confirmed the uptake of NPs by plants under drought stress, the explicit mechanism of their acquisition and translocation remains elusive. For instance, in an experiment by Sreelakshmi et al (2021), the increased iron content upon treatment with iron oxide NPs (FeNPs) in Setaria italica plants facing drought stress demonstrated the readily uptake of FeNPs by plants. Also, in drought‐stressed wheat ( Triticum aestivum L.), the content of Zn was elevated upon application of zinc oxide nanoparticles (ZnO‐NPs, both coated or uncoated with urea) which confirmed the uptake of ZnO‐NPs (Dimkpa et al, 2020).…”

Section: Uptake and Transport Of Nps Under Drought Stressmentioning

confidence: 99%

Section: Uptake and Transport Of Nps Under Drought Stressmentioning

confidence: 99%

Nanoparticles as potential hallmarks of drought stress tolerance in plants

Kandhol

Jain

Tripathi

2022

Physiologia Plantarum

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Plants are inevitably exposed to drought stress limiting their growth and causing yield loss, thus inciting food crises across the world. Nanoparticles (NPs) are regarded as effective and promising tools for modulation of crop yield to overcome current and future constraints in sustainable agricultural production by upgrading the plant tolerance mechanism under abiotic stress conditions, including drought. NPs exhibit alleviating effects against drought stress via induction of physiological and biochemical readjustments accompanied by modulation of gene expression involved in drought response/tolerance. NPs ameliorate drought‐induced reduction in carbon assimilation via increasing the photosynthetic activity. The improved root growth, upregulation of aquaporins, modification of intracellular water metabolism, accumulation of compatible solutes and ion homeostasis are the major mechanisms used by NPs to mitigate the osmotic stress caused by water deficit. NPs reduce water loss from leaves through stomatal closure due to fostered abscisic acid (ABA) accumulation and ameliorate oxidative stress damage by reducing reactive oxygen species and activating the antioxidant defense system. This review provides an evolutionary foundation regarding drought stress in plant life and summarizes the interactions between NPs and plants under drought. The subsequent impact of NPs on plant development and productivity and recent nanobiotechnological approaches to improve drought stress resilience are presented. On the whole, this review highlights the significance of NPs in dealing with the global problem of water scarcity faced by farmers.

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Drought stress amelioration in plants using green synthesised iron oxide nanoparticles

Cited by 37 publications

References 22 publications

Foliar Application of Nano-Silicon Improves the Physiological and Biochemical Characteristics of ‘Kalamata’ Olive Subjected to Deficit Irrigation in a Semi-Arid Climate

Foliar Application of Nano-Silicon Improves the Physiological and Biochemical Characteristics of ‘Kalamata’ Olive Subjected to Deficit Irrigation in a Semi-Arid Climate

Effects of biogenic silver and iron nanoparticles on soybean seedlings (Glycine max)

Nanoparticles as potential hallmarks of drought stress tolerance in plants

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