Salinity stress and nanoparticles: Insights into antioxidative enzymatic resistance, signaling, and defense mechanisms

Singh, Abhishek; Rajput, Vishnu D.; Sharma, Ragini; Ghazaryan, Karen; Minkina, Tatiana

doi:10.1016/j.envres.2023.116585

Cited by 58 publications

(12 citation statements)

References 213 publications

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“…Nonetheless, the successful emergence of the initial root in response to osmotic pressure, triggered by reduced water availability due to high salt concentrations (150 mM NaCl) in maize seeds, requires a decrease in the suppression of germination potential (SGP). To counteract the adverse effects of salt on seed germination, various factors have been proposed to play a role in promoting successful germination, including increased seed reserves, elevated levels of gibberellic acid within the seed, efficient carbohydrate metabolism, enhanced antioxidant defense mechanisms, activation of MAPK signaling 40 . However, due to limited available data in the context of maize, it remains challenging to dissect the contributions of each of these elements individually.…”

Section: Discussionmentioning

confidence: 99%

Antioxidant production promotes defense mechanism and different gene expression level in Zea mays under abiotic stress

Ali,

Sami,

Haider

et al. 2024

Sci Rep

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The growth and productivity of maize are severely affected by soil salinity. The crucial determinants for the future performance of plants are productive for seed germination and seedling establishment; however, both stages are liable to soil salinity. For grain, maize is an economically significant crop sensitive to abiotic stresses. However, little is known about defense responses by the salinity-induced antioxidant and oxidative stress in maize. In our work, the commercially available maize variety Raka-Poshi was grown in pots for 30 days under greenhouse conditions. To evaluate the salt-induced oxidative/antioxidant responses in maize for salt stress 0, 25, 50, 75, 100 and 150 mM concentrations, treatments were provided using sodium chloride (NaCl). All the biochemical indices were calculated under all NaCl concentrations, while drought was induced by up to 50% irrigation water. After 30 days of seed germination, the maize leaves were collected for the measurement of lipid peroxidase or malondialdehyde (MDA), glutathione reductase (GR), guaiacol peroxidase (GPOD), hydrogen peroxide (H2O2), superoxide dismutase (SOD), lipoxygenase (LOX), catalase (CAT), ascorbate peroxidase (APOD) and glutathione-S-transferase (GST). The results revealed a 47% reduction under 150 mM NaCl and 50% drought stress conditions. The results have shown that the successive increase of NaCl concentrations and drought caused an increase in catalase production. With successive increase in NaCl concentration and drought stress, lower levels of H2O2, SOD, and MDA were detected in maize leaves. The results regarding the morphology of maize seedlings indicated a successive reduction in the root length and shoot length under applications of salt and drought stress, while root-to-shoot weights were found to be increased under drought stress and decreased under salt stress conditions During gene expression analysis collectively indicate that, under drought stress conditions, the expression levels of all nine mentioned enzyme-related genes were consistently downregulated.

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Section: Discussionmentioning

confidence: 99%

Antioxidant production promotes defense mechanism and different gene expression level in Zea mays under abiotic stress

Ali,

Sami,

Haider

et al. 2024

Sci Rep

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“…Chelating substances such as phytosiderophores, nicotianamine, and organic acids are secreted by roots and may affect HM uptake (Dalcorso et al 2010 ). Mitogen-activated protein kinase (MAPK) cascade signalling pathways show up in different stress conditions like salinity and drought; similarly, it is also observed to respond to HMMs stress (Dalcorso et al 2010 ; Singh et al 2023b ). When seedlings of the lucerne ( Medicago sativa L.) plant are exposed to Cu or Cd ions, this leads to the activation of four different MAPKs, e.g., SIMK, MMK2, MMK3, and SAMK.…”

Section: Nanotechnological Approaches For Remediation Of Hmmsmentioning

confidence: 99%

Effects of environmental metal and metalloid pollutants on plants and human health: exploring nano-remediation approach

Rajput,

Singh,

Agrawal

et al. 2024

Stress Biology

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Metal and metalloid pollutants severely threatens environmental ecosystems and human health, necessitating effective remediation strategies. Nanoparticle (NPs)-based approaches have gained significant attention as promising solutions for efficient removing heavy metals from various environmental matrices. The present review is focused on green synthesized NPs-mediated remediation such as the implementation of iron, carbon-based nanomaterials, metal oxides, and bio-based NPs. The review also explores the mechanisms of NPs interactions with heavy metals, including adsorption, precipitation, and redox reactions. Critical factors influencing the remediation efficiency, such as NPs size, surface charge, and composition, are systematically examined. Furthermore, the environmental fate, transport, and potential risks associated with the application of NPs are critically evaluated. The review also highlights various sources of metal and metalloid pollutants and their impact on human health and translocation in plant tissues. Prospects and challenges in translating NPs-based remediation from laboratory research to real-world applications are proposed. The current work will be helpful to direct future research endeavors and promote the sustainable implementation of metal and metalloid elimination.

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“…Osmotic adjustment helps maintain cellular water potential and restrict water loss under salt stress conditions [ 13 ]. Antioxidant defense systems, including enzymes such as superoxide dismutase and catalase, aid in scavenging reactive oxygen species generated during salt stress [ 14 ]. Hormonal regulation, particularly abscisic acid, plays a crucial role in coordinating plant responses to salt stress [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Salt Stress Induces Contrasting Physiological and Biochemical Effects on Four Elite Date Palm Cultivars (Phoenix dactylifera L.) from Southeast Morocco

Benaceur,

Meziani,

El Fadile

et al. 2024

Plants

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Understanding the response of date palm (Phoenix dactylifera L.) cultivars to salt stress is essential for the sustainable management of phoeniculture in Tafilalet, Morocco. It offers a promising avenue for addressing the challenges presented by the increasing salinity of irrigation waters, especially because farmers in these regions often lack the necessary knowledge and resources to make informed decisions regarding cultivar selection. This study addresses this issue by investigating the performance of the most relied on cultivars by farmers in Tafilalet, namely Mejhoul, Boufeggous, Nejda, and Bouskri. These cultivars were exposed to a sodium chloride treatment of 154 mM, and their performances were evaluated over a three-month period. We examined the growth rate, photosynthesis-related parameters, pigments, water status in plants, and biochemical compounds associated with oxidative stress, osmotic stress, and ionic stress. Principle component analysis (PCA) effectively categorized the cultivars into two distinct groups: salt-sensitive (Mejhoul and Nejda) and salt-tolerant (Boufeggous and Bouskri). These findings provide valuable insights for farmers, highlighting the advantages of cultivating Boufeggous and Bouskri cultivars due to their superior adaptation to salt conditions. These cultivars exhibited moderate decrease in shoot growth (25%), enhanced catalase activity, a smaller increase in anthocyanin content, and greater enhancement in organic osmolytes compared with salt-sensitive cultivars like Mejhoul (experiencing an 87% reduction in shoot elongation) and Nejda (exhibiting the highest reduction in leaf area). Furthermore, the Na+/K+ ratio was positively influenced by salt stress, with Mejhoul and Nejda recording the highest values, suggesting its potential as an indicator of salt stress sensitivity in date palms.

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Salinity stress and nanoparticles: Insights into antioxidative enzymatic resistance, signaling, and defense mechanisms

Cited by 58 publications

References 213 publications

Antioxidant production promotes defense mechanism and different gene expression level in Zea mays under abiotic stress

Antioxidant production promotes defense mechanism and different gene expression level in Zea mays under abiotic stress

Effects of environmental metal and metalloid pollutants on plants and human health: exploring nano-remediation approach

Salt Stress Induces Contrasting Physiological and Biochemical Effects on Four Elite Date Palm Cultivars (Phoenix dactylifera L.) from Southeast Morocco

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