Chitosan nanoparticles effectively combat salinity stress by enhancing antioxidant activity and alkaloid biosynthesis in Catharanthus roseus (L.) G. Don

Hassan, Fahmy; Ali, Esmat F.; Gaber, Ahmed; Fetouh, M. I.; Mazrou, Ragia M.

doi:10.1016/j.plaphy.2021.03.004

Cited by 69 publications

(57 citation statements)

References 57 publications

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“…Positive correlation between growth, photosynthetic pigments, nutrient content and TSS in one side and essential oil content in the other side was clearly observed (Figure 5). Therefore, these results may be due to the role of CSNPs in increasing the water content, nutrient uptake, photosynthetic pigments and TSS which resulted in higher growth rate which may motivate the efficiency of the translocation and assimilation and translocation of photosynthetic products and other metabolites to the reproductive parts [18,22]. In agreement with our results, chitosan application increased the essential oil content in thyme [14] and Origanium vulgare [45].…”

Section: Discussionsupporting

confidence: 90%

“…CS application improves growth [14,15] and promotes the accumulation of secondary metabolites in several medicinal plants [14,16]. Further, it shows antioxidant activity and is able to counter oxidative damage in plant tissues [17,18].…”

Section: Introductionmentioning

confidence: 99%

“…The effectiveness of chitosan nanoparticles (CSNPs) is higher than that of bulk chitosan due to its wide surface area and small size [24]. CSNPs improve the uptake of water and essential nutrients through increasing the root growth [18,22]. Despite the few abovementioned studies about using bulk chitosan to enhance plant growth, reports concerning the application of CSNPs to enhance growth and secondary metabolites in medicinal plants are scarce.…”

Section: Introductionmentioning

confidence: 99%

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A Pivotal Role of Chitosan Nanoparticles in Enhancing the Essential Oil Productivity and Antioxidant Capacity in Matricaria chamomilla L.

et al. 2021

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Chitosan is a biopolymer with several biological and agricultural applications. Recently, development of chitosan nanoparticles (CSNPs) adds additional value by further using it as an eco-friendly biostimulant. Therefore, the impact of CSNPs foliar application on the growth, essential oil productivity and antioxidant capacity of chamomile was investigated. Treatments comprised 0, 100, 200, 300 and 400 mg L−1 of CSNPs applied to plants as a foliar spray. CSNPs foliar application improved the growth and productivity of chamomile plants. Relative to the control, the flower yield was increased by 52.10 and 55.74% while the essential oil percentage was increased by 57.14 and 47.06% due to CSNPs at 300 mg L−1 during the two seasons of study. Moreover, CSNPs enhanced the photosynthetic pigments, total soluble sugars and N, P and K percentages. Interestingly, CSNPs increased the antioxidant capacity as measured by total phenolics and the antioxidant activity (DPPH). Collectively, it is suggested that CSNPs might be a promising eco-friendly bio-stimulant and it could be an alternative strategy to improve the productivity, quality and decrease the production cost of chamomile and possibly some other medicinal species.

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Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Pivotal Role of Chitosan Nanoparticles in Enhancing the Essential Oil Productivity and Antioxidant Capacity in Matricaria chamomilla L.

et al. 2021

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“…The exogenous application of L-CTS and M-CTS further increased CAT activity in salt-stressed shoots, thus confirming the major role played by CAT as hydrogen-peroxide-scavenging enzyme in durum wheat seedlings under salt stress. Similarly, pretreatment with CTS under salt stress resulted in increased activities of the antioxidant enzymes in Catharanthus roseus [ 54 ], soybean [ 30 ], rice [ 55 ], safflower and sunflower [ 56 ]. Further, in bread wheat exposed to salinity, a significant increase in SOD, CAT and POX activities and a consequent alleviation of the oxidative stress was observed after CTS treatment of seeds [ 57 ], leaves [ 58 ] or CTS addition to the nutrient solution [ 33 ].…”

Section: Discussionmentioning

confidence: 99%

Chitosan-Induced Activation of the Antioxidant Defense System Counteracts the Adverse Effects of Salinity in Durum Wheat

Quitadamo

Simone

Beleggia

et al. 2021

Plants

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The present study was carried out with the aim of (i) evaluating the effect of chitosan (CTS) on the growth of durum wheat under salinity and (ii) examining CTS-regulated mechanisms of salinity tolerance associated with the antioxidant defense system. To achieve these goals, durum wheat seedlings were treated with CTS at different molecular weight, low (L-CTS, 50–190 kDa), medium (M-CTS, 190–310 kDa) and high (H-CTS, 310–375 kDa). The results obtained show that exposure to 200 mM NaCl reduced the shoot and the root dried biomass by 38% and 59%, respectively. The growth impairment induced by salinity was strongly correlated with an increase in the superoxide anion production (5-fold), hydrogen peroxide content (2-fold) and malondialdehyde (MDA) content (4-fold). Seedlings responded to the oxidative stress triggered by salinity with an increase in the total phenolic content (TPC), total flavonoid content (TFC) and total antioxidant activity (TAA) by 67%, 51% and 32%, respectively. A salt-induced increase in the activity of the antioxidant enzymes superoxide dismutase and catalase (CAT) of 89% and 86%, respectively, was also observed. Treatment of salt-stressed seedlings with exogenous CTS significantly promoted seedling growth, with the strongest effects observed for L-CTS and M-CTS, which increased the shoot biomass of stressed seedlings by 32% and 44%, respectively, whereas the root dried biomass increased by 87% and 64%, respectively. L-CTS and M-CTS treatments also decreased the superoxide anion production (57% and 59%, respectively), the hydrogen peroxide content (35% and 38%, respectively) and the MDA content (48% and 56%, respectively) and increased the TPC (23% and 14%, respectively), the TFC (19% and 10%, respectively), the TAA (up to 10% and 7%, respectively) and the CAT activity (29% and 20%, respectively). Overall, our findings indicate that CTS exerts its protective role against the oxidative damages induced by salinity by enhancing the antioxidant defense system. L-CTS and M-CTS were the most effective in alleviating the adverse effect of NaCl, thus demonstrating that the CTS action is strictly related to its molecular weight.

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“…Spraying with chitosan nanoparticles (CSNPs, 1%) resulted in alkaloid accumulation, impeded chl breakdown and upregulated activities of CAT, APX, and GR. Consequently, CSNPs lessened the oxidative damage, evidenced by decreased MDA and H 2 O 2 , thus allowing smooth membrane activity and ensuring salt tolerance [108]. Ait-El-Mokhtar et al [109] investigated the role of exogenously applied AMF and/or compost (240 mM) in regulating oxidative damage in date palm (Phoenix dactylifera cv.…”

Section: Salinitymentioning

confidence: 99%

Biostimulants for the Regulation of Reactive Oxygen Species Metabolism in Plants under Abiotic Stress

Hasanuzzaman

Parvin

Bardhan

et al. 2021

Cells

118

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Global food security for a growing population with finite resources is often challenged by multiple, simultaneously occurring on-farm abiotic stresses (i.e., drought, salinity, low and high temperature, waterlogging, metal toxicity, etc.) due to climatic uncertainties and variability. Breeding for multiple stress tolerance is a long-term solution, though developing multiple-stress-tolerant crop varieties is still a challenge. Generation of reactive oxygen species in plant cells is a common response under diverse multiple abiotic stresses which play dual role of signaling molecules or damaging agents depending on concentration. Thus, a delicate balance of reactive oxygen species generation under stress may improve crop health, which depends on the natural antioxidant defense system of the plants. Biostimulants represent a promising type of environment-friendly formulation based on natural products that are frequently used exogenously to enhance abiotic stress tolerance. In this review, we illustrate the potential of diverse biostimulants on the activity of the antioxidant defense system of major crop plants under stress conditions and their other roles in the management of abiotic stresses. Biostimulants have the potential to overcome oxidative stress, though their wider applicability is tightly regulated by dose, crop growth stage, variety and type of biostimulants. However, these limitations can be overcome with the understanding of biostimulants’ interaction with ROS signaling and the antioxidant defense system of the plants.

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Chitosan nanoparticles effectively combat salinity stress by enhancing antioxidant activity and alkaloid biosynthesis in Catharanthus roseus (L.) G. Don

Cited by 69 publications

References 57 publications

A Pivotal Role of Chitosan Nanoparticles in Enhancing the Essential Oil Productivity and Antioxidant Capacity in Matricaria chamomilla L.

A Pivotal Role of Chitosan Nanoparticles in Enhancing the Essential Oil Productivity and Antioxidant Capacity in Matricaria chamomilla L.

Chitosan-Induced Activation of the Antioxidant Defense System Counteracts the Adverse Effects of Salinity in Durum Wheat

Biostimulants for the Regulation of Reactive Oxygen Species Metabolism in Plants under Abiotic Stress

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