Exogenous Ca/Mg quotient reduces the inhibitory effects of PEG induced osmotic stress on Avena sativa L.

Bibi, Sakina; Ullah, Sami; Hafeez, Aqsa; Khan, Muhammad Nauman; Javed, Muhammad Ammar; Ali, Baber; Din, Israr Ud; Bangash, Sajid Ali Khan; Wahab, Sana; Wahid, Nazima; Zaman, F.; Alhag, Sadeq K.; Ih, Abd El-Rahim; Ahmed, Ahmed Ezzat; Selim, Samy

doi:10.1590/1519-6984.264642

Cited by 24 publications

(17 citation statements)

References 49 publications

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“…Salt tolerant plants acquire various physiological and metabolic adaptations to avoid specific ion toxicity, osmotic shock 1 – 3 , nutrient imbalance 4 and oxidative damage 5 – 7 . Increase in root and/ or shoot biomass also helps in regulating Na + entry to the xylem or to decrease its transport to the shoot 8 , 9 while excluding and avoiding toxic ions during the process 10 .…”

Section: Introductionmentioning

confidence: 99%

Salinity stress improves antioxidant potential by modulating physio-biochemical responses in Moringa oleifera Lam.

Azeem

Pirjan

Qasim

et al. 2023

Sci Rep

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Moringa oleifera Lam. is a common edible plant, famous for several nutritional and therapeutic benefits. This study investigates the salt -induced modulations in plant growth, physio-biochemical responses, and antioxidant performance of M. oleifera grown under 0, 50, and 100 mM NaCl concentrations. Results showed that the plant effectively managed moderate salinity (50 mM NaCl) by maintaining succulence, weight ratios, and biomass allocation patterns of both shoot and root with minimal reduction in dry biomass. However, high salinity (100 mM NaCl) remarkably declined all growth parameters. The plant accumulated more Na+ and Cl−, while less K+ under salinity as compared to the control. Consequently, osmotic potentials of both root and leaf decreased under salinity, which was corroborated by the high amount of proline and soluble sugars. Increased level of H2O2 with significantly unchanged membrane fluidity indicating its role in perceiving and managing stress at moderate salinity. In addition, increased activities of superoxide dismutase, and catalase, with increased glutathione and flavonoid contents suggest an integrated participation of both enzymatic and non-enzymatic antioxidant components in regulating ROS. On the other hand, high salinity caused an outburst of ROS indicated by high H2O2, MDA, and electrolyte leakage. As a response, moringa drastically increased the activities of all antioxidant enzymes and contents of antioxidant molecules including ascorbic acid, glutathione, total phenols, and flavonoids with high radical scavenging and reducing power capacities. However, a considerable amount of energy was used in such management resulting in a significant growth reduction at 100 mM NaCl. This study suggests that moringa effectively resisted moderate salinity by modulating physio-biochemical attributes and effectively managing ion toxicity and oxidative stress. Salt stress also enhanced the medicinal potentials of moringa by increasing the contents of antioxidant compounds including ascorbic acid, glutathione, total phenols, and flavonoids and their resulting activities. It can be grown on degraded/ saline lands and biomass of this plant can be used for edible and medicinal purposes, besides providing other benefits in a global climate change scenario.

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Section: Introductionmentioning

confidence: 99%

Salinity stress improves antioxidant potential by modulating physio-biochemical responses in Moringa oleifera Lam.

Azeem

Pirjan

Qasim

et al. 2023

Sci Rep

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“…Boron plays a key role in cell wall formation, carbohydrate, Indoleacetic acid (IAA) and Ribonucleic acid (RNA) metabolism, membrane integrity, calcium uptake, translocation of sugars, flowering, pollination and ultimately growth [83][84][85]. The increase in primary branches, pods per plant and pod length is attributed to the role of B in cell elongation and maturation, protein synthesis, development of meristematic tissues and eventually plant growth and yield [86][87][88][89][90]. Jing et al [91] reported that the application of B improves plant dry matter and pods per plant in groundnut.…”

Section: Discussionmentioning

confidence: 99%

Application of Zinc, Iron and Boron Enhances Productivity and Grain Biofortification of Mungbean

Zafar¹,

Ahmed²,

Munir³

et al. 2023

Phyton

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Deficiencies of essential vitamins, iron (Fe), and zinc (Zn) affect over one-half of the world's population. A significant progress has been made to control micronutrient deficiencies through supplementation, but new approaches are needed, especially to reach the rural poor. Agronomic biofortification of pulses with Zn, Fe, and boron (B) offers a pragmatic solution to combat hidden hunger instead of food fortification and supplementation. Moreover, it also has positive effects on crop production as well. Therefore, we conducted three separate field experiments for two consecutive years to evaluate the impact of soil and foliar application of the aforementioned nutrients on the yield and seed biofortification of mungbean. Soil application of Zn at 0, 4.125, 8.25, Fe at 0, 2.5, 5.0 and B at 0, 0.55, 1.1 kg ha −1 was done in the first, second and third experiment, respectively. Foliar application in these experiments was done at 0.3% Zn, 0.2% Fe and 0.1% B respectively one week after flowering initiation. Data revealed that soil-applied Zn, Fe and B at 8.25, 5.0 and 1.1 kg ha −1 , respectively, enhanced the grain yield of mungbean; however, this increase in yield was statistically similar to that recorded with Zn, Fe and B at 4.125, 2.5 and 0.55 kg ha −1 , respectively. Foliar application of these nutrients at flower initiation significantly enhanced the Zn contents by 28% and 31%, Fe contents by 80% and 78%, while B contents by 98% and 116% over control during 2019 and 2020, respectively. It was concluded from the results that soil application of Zn, Fe, and B enhanced the yield performance of mungbean; while significant improvements in seed Zn, Fe, and B contents were recorded with foliar application of these nutrients.

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“…As a result of metal accumulation, a large number of active free oxygen radicals are formed, which may be the main cause of cell membrane lipid peroxidation, and may also harm the functioning and structure of the cell membrane ( Kamran et al., 2019 ; Rehman et al., 2019 ; Afridi et al, 2022a ; Afridi et al, 2022b ). Excessive ROS production causes oxidative stress, as reported for many crops under heavy metals treatment, and is likely to be commenced by molecular oxygen excitation (O 2 ) to generate singlet oxygen or by electron transfer to O 2 and genesis of free radicals (i.e., O 2− and OH − ) ( Mfarrej et al., 2021 ; Bibi et al, 2024 ). Plant response to oxidative stress also depends on plant species and cultivars, and this ROS production in plants is removed by a variety of antioxidant enzymes, such as SOD, POD, CAT, and APX ( Murtaza et al., 2021 ; Akhtar et al., 2022 ; Ali et al., 2022a ).…”

Section: Discussionmentioning

confidence: 99%

Combined application of plant growth-promoting bacteria and iron oxide nanoparticles ameliorates the toxic effects of arsenic in Ajwain (Trachyspermum ammi L.)

Sun

et al. 2022

Front. Plant Sci.

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Soil contamination with toxic heavy metals [such as arsenic (As)] is becoming a serious global problem because of the rapid development of the social economy. Although plant growth-promoting bacteria (PGPB) and nanoparticles (NPs) are the major protectants to alleviate metal toxicity, the study of these chemicals in combination to ameliorate the toxic effects of As is limited. Therefore, the present study was conducted to investigate the combined effects of different levels of Providencia vermicola (5 ppm and 10 ppm) and iron oxide nanoparticles (FeO-NPs) (50 mg/l–1 and 100 mg/l–1) on plant growth and biomass, photosynthetic pigments, gas exchange attributes, oxidative stress and response of antioxidant compounds (enzymatic and non-enzymatic), and their specific gene expression, sugars, nutritional status of the plant, organic acid exudation pattern As accumulation from the different parts of the plants, and electron microscopy under the soil, which was spiked with different levels of As [0 μM (i.e., no As), 50 μM, and 100 μM] in Ajwain (Trachyspermum ammi L.) seedlings. Results from the present study showed that the increasing levels of As in the soil significantly (p< 0.05) decreased plant growth and biomass, photosynthetic pigments, gas exchange attributes, sugars, and nutritional contents from the roots and shoots of the plants, and destroyed the ultra-structure of membrane-bound organelles. In contrast, increasing levels of As in the soil significantly (p< 0.05) increased oxidative stress indicators in term of malondialdehyde, hydrogen peroxide, and electrolyte leakage, and also increased organic acid exudation patter in the roots of T. ammi seedlings. The negative impact of As toxicity can overcome the application of PGPB (P. vermicola) and FeO-NPs, which ultimately increased plant growth and biomass by capturing the reactive oxygen species, and decreased oxidative stress in T. ammi seedlings by decreasing the As contents in the roots and shoots of the plants. Our results also showed that the FeO-NPs were more sever and showed better results when we compared with PGPB (P. vermicola) under the same treatment of As in the soil. Research findings, therefore, suggest that the combined application of P. vermicola and FeO-NPs can ameliorate As toxicity in T. ammi seedlings, resulting in improved plant growth and composition under metal stress, as depicted by balanced exudation of organic acids.

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Exogenous Ca/Mg quotient reduces the inhibitory effects of PEG induced osmotic stress on Avena sativa L.

Cited by 24 publications

References 49 publications

Salinity stress improves antioxidant potential by modulating physio-biochemical responses in Moringa oleifera Lam.

Salinity stress improves antioxidant potential by modulating physio-biochemical responses in Moringa oleifera Lam.

Application of Zinc, Iron and Boron Enhances Productivity and Grain Biofortification of Mungbean

Combined application of plant growth-promoting bacteria and iron oxide nanoparticles ameliorates the toxic effects of arsenic in Ajwain (Trachyspermum ammi L.)

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