Chitosan nanoparticles improve physiological and biochemical responses of Salvia abrotanoides (Kar.) under drought stress

Dowom, Samaneh Attaran; Karimian, Zahra; Dehnavi, Mahboubeh Mostafaei; Samiei, Leila

doi:10.1186/s12870-022-03689-4

Cited by 49 publications

(17 citation statements)

References 123 publications

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“…The CS applications are known to interfere positively with a myriad of complex networks including cellular signaling, transcription processes, ionic and water transport, cell redox homeostasis and metabolic activities in germinating seeds. All such CS-mediated physiological and biochemical positive correlations enhance seedling development by minimizing the toxic effects of salt stress [ 79 ]. Further, the polyphenols of GTE serve as the first line of defense due to their direct antioxidant role to maintain cellular redox homeostasis for well-regulated metabolic activities for germination and seedling development.…”

Section: Discussionmentioning

confidence: 99%

“…Considering priming as a facile approach and the high efficiency of nanomaterials, we hypothesized that a biodegradable and nontoxic biopolymer and natural phytochemicals could be exploited as sustainable resources to prepare nanocomposite as an environment-friendly priming agent. Chitosan (CS) is a biodegradable biopolymer, a heterogeneous and cationic polysaccharide that regulates immune signaling, carbon and nitrogen metabolism in plants thus stimulate plant growth and elicit stress resistance [ 28 – 30 ]. Green tea is enriched with polyphenols predominantly catechins which possess a broad spectrum of biological activities including high antioxidant potential [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

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Nanopriming-mediated memory imprints reduce salt toxicity in wheat seedlings by modulating physiobiochemical attributes

et al. 2022

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Background Around the globe, salinity is one of the serious environmental stresses which negatively affect rapid seed germination, uniform seedling establishment and plant developments restricting sustainable agricultural productivity. In recent years, the concepts of sustainable agriculture and cleaner production strategy have emphasized the introduction of greener agrochemicals using biocompatible and natural sources to maximize crop yield with minimum ecotoxicological effects. Over the last decade, the emergence of nanotechnology as a forefront of interdisciplinary science has introduced nanomaterials as fast-acting plant growth-promoting agents. Results Herein, we report the preparation of nanocomposite using chitosan and green tea (CS-GTE NC) as an ecofriendly nanopriming agent to elicit salt stress tolerance through priming imprints. The CS-GTE NC-primed (0.02, 0.04 and 0.06%), hydroprimed and non-primed (control) wheat seeds were germinated under normal and salt stress (150 mM NaCl) conditions. The seedlings developed from aforesaid seeds were used for physiological, biochemical and germination studies. The priming treatments increased protein contents (10–12%), photosynthetic pigments (Chl a (4–6%), Chl b (34–36%), Total Chl (7–14%) and upregulated the machinery of antioxidants (CAT (26–42%), POD (22–43%)) in wheat seedlings under stress conditions. It also reduced MDA contents (65–75%) and regulated ROS production resulting in improved membrane stability. The priming-mediated alterations in biochemical attributes resulted in improved final germination (20–22%), vigor (4–11%) and germination index (6–13%) under both conditions. It reduced mean germination time significantly, establishing the stress-insulating role of the nanocomposite. The improvement of germination parameters validated the stimulation of priming memory in composite-treated seeds. Conclusion Pre-treatment of seeds with nanocomposite enables them to counter salinity at the seedling development stage by means of priming memory warranting sustainable plant growth and high crop productivity.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nanopriming-mediated memory imprints reduce salt toxicity in wheat seedlings by modulating physiobiochemical attributes

et al. 2022

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“…In this way, NPs mitigate drought-induced ROS through the aggregation of osmolytes, which results in enhanced osmotic adaptation and crop water balance ( Alabdallah et al., 2021 ). Furthermore, NPs increase the photosynthetic activity, upregulate aquaporins, modify the intracellular water metabolism, accumulates compatible solutes, maintain intracellular ion homeostasis, increase stomatal density, and reduce water loss from leaves through stomatal closure due to fostered ABA accumulation ( Attaran Dowom et al., 2022 ; Kandhol et al., 2022 ).…”

Section: Nps For Plant Protection Against Abiotic Stressmentioning

confidence: 99%

Nanomaterials as an alternative to increase plant resistance to abiotic stresses

et al. 2022

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The efficient use of natural resources without negative repercussions to the environment has encouraged the incursion of nanotechnology to provide viable alternatives in diverse areas, including crop management. Agriculture faces challenges due to the combination of different abiotic stresses where nanotechnology can contribute with promising applications. In this context, several studies report that the application of nanoparticles and nanomaterials positively affects crop productivity through different strategies such as green synthesis of nanoparticles, plant targeted protection through the application of nanoherbicides and nanofungicides, precise and constant supply of nutrients through nanofertilizers, and tolerance to abiotic stress (e.g., low or high temperatures, drought, salinity, low or high light intensities, UV-B, metals in soil) by several mechanisms such as activation of the antioxidant enzyme system that alleviates oxidative stress. Thus, the present review focuses on the benefits of NPs against these type of stress and their possible action mechanisms derived from the interaction between nanoparticles and plants, and their potential application for improving agricultural practices.

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“…Moreover, CH has a unique bioactive property that can prevent serious injury to plants under stressful conditions by triggering the mechanisms of plant defense (Mohammadi et al 2021). Previous research has shown the use of CH as an antiperspirant (Attaran et al 2022). In this respect, (Mphande et al 2020) divided antiperspirants into three main groups: (A) physical antiperspirants forming a thin layer on the stomata to prevent water evaporation; (B) reflective antiperspirants that improve the light reflectivity of leaf surfaces, reducing leaf temperature; (C) physiological antiperspirants containing certain compounds influencing the guard cells around the stomata and inducing plants to close it.…”

Section: Introductionmentioning

confidence: 99%

Minimizing the Adverse Impact of Drought on Corn by Applying Foliar Potassium Humate Combined with Chitosan

Elshamly

2023

J Soil Sci Plant Nutr

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Previous studies have demonstrated the impact of potassium humate (KH) and chitosan (CH) on ameliorating drought effects, but their combined applications in promoting these benefits are still unfound. Therefore, the current study aims to evaluate the efficacy of KH and CH on corn growth, yield, nutrient contents, and water productivity under full and limited irrigation conditions. Under the drip irrigation system, a split-plot experiment was performed with three replications in the second week of February in the seasons of 2021 and 2022. The main plot was equipped with a valve and a flow emitter to control the amount of the targeted irrigation levels (full irrigation and limited irrigation from the development stage onwards), as well as four foliar applications in the subplot (0, CH 500 mg l−1, KH 3000 mg l−1, and CH 500 mg l−1 + KH 3000 mg l−1). It was found that separate foliar applications of KH or combined foliar applications of KH + CH had a significant impact on the most examined traits. However, compared to the control, adopting limited irrigation and applying combined applications thereof have significantly increased iron, zinc, manganese, oil, protein, yield, and water productivity. In addition, this combination decreased proline, and the maximum reduction was observed for the combined application with adopting full irrigation. In arid regions, the researcher recommends treating stressed plants with combined foliar applications of KH + CH, which could help plants overcome the negative effects of drought and attain the highest yield and water productivity.

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Chitosan nanoparticles improve physiological and biochemical responses of Salvia abrotanoides (Kar.) under drought stress

Cited by 49 publications

References 123 publications

Nanopriming-mediated memory imprints reduce salt toxicity in wheat seedlings by modulating physiobiochemical attributes

Nanopriming-mediated memory imprints reduce salt toxicity in wheat seedlings by modulating physiobiochemical attributes

Nanomaterials as an alternative to increase plant resistance to abiotic stresses

Minimizing the Adverse Impact of Drought on Corn by Applying Foliar Potassium Humate Combined with Chitosan

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