Ascorbic Acid Enhances Growth and Yield of Sweet Peppers (Capsicum annum) by Mitigating Salinity Stress

El-Beltagi, Hossam S.; Ahmad, Imran; Basıt, Abdul; Shehata, Wael F.; Hassan, Umair ul; Shah, Syed Tanveer; Haleema, Bibi; Jalal, Abdullah; Amin, Roohul; Khalid, Muhammad Areeb; Noor, Fahad; Mohamed, Heba I.

doi:10.1007/s10343-021-00619-6

Cited by 43 publications

(21 citation statements)

References 73 publications

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“…Due to the non-toxic applied doses of both nano-Cu and nano-Se fertilizers (100 mg L −1 ), an increase in all antioxidant enzymatic activities (i.e., CAT, PPO and POX) were observed by increasing the applied nanofertilizers. These findings are not surprising given the fact that other research shows applied nano-Cu or Se did not cause any damage to the antioxidant system in many crops when they applied up to 100 mg L −1 of, e.g., Chrysanthemum morifolium Ramat [40] and Oryza sativa [49]. Furthermore, high photosynthetic rates and enzyme activities in the banana transplants, as well as a high growth rate, were observed due to the high applied dose of nanofertilizers.…”

Section: Antioxidant Enzymatic Activities Of Banana Transplantsmentioning

confidence: 54%

“…This finding may answer the main question in this study: is using nanofertilizers effective in acclimatization and rooting of banana transplants? A strong relationship between plant photosynthetic pigments and nanofertilizers has been reported in the literature [39][40][41][42][43][44][45][46]. Surprisingly, nano-Cu recorded the highest values of photosynthetic pigments and its fluorescence compared to control or nano-Se.…”

Section: Photosynthetic Pigments and Fluorescencementioning

confidence: 90%

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Acclimatization of In Vitro Banana Seedlings Using Root-Applied Bio-Nanofertilizer of Copper and Selenium

et al. 2022

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The production of in vitro banana transplants has become an important practice in the global banana production. Proper and enough nutrients are needed for banana production particularly during the acclimatization period. To avoid the environmental problem resulting from the chemical fertilizers, nanofertilizers of Se and Cu were separately applied during the acclimatization of banana. The biological form of nano-Cu (50 and 100 mg L−1) and nano-Se (25, 50, 75, and 100 mg L−1) were studied on acclimatized banana transplants under greenhouse conditions. Both applied nanofertilizers enhanced the growth of transplant by 10.9 and 12.6% for dry weight after nano-Se and nano-Cu application up to 100 mg L−1, respectively. The survival rate was also increased by increasing applied doses of both nanofertilizers up to 100 mg L−1, whereas the highest survival rate (95.3%) was recorded for nano-Cu. All studied photosynthetic pigments and its fluorescence were improved by applying nanofertilizers. Studied antioxidant enzymatic activities (CAT, PPO, and POX) were also increased. A pH decrease in the growing medium was noticed after applying nano-Cu, which may explain the high bioavailability of studied nutrients (N, P, K, Cu, Fe, Se, and Zn) by banana transplants.

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Section: Antioxidant Enzymatic Activities Of Banana Transplantsmentioning

confidence: 54%

Section: Photosynthetic Pigments and Fluorescencementioning

confidence: 90%

Acclimatization of In Vitro Banana Seedlings Using Root-Applied Bio-Nanofertilizer of Copper and Selenium

et al. 2022

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“…Meanwhile, a significant decrease was observed in CAT and G-POX of ALA-treated seedlings under alkaline stress conditions. These effects imply that under sodic alkaline stress, ALA can reduce the cytotoxicity of superoxide anion and H 2 O 2 by affecting the activities of SOD and APX, respectively [ 68 , 69 , 70 , 71 , 72 , 73 , 74 ]. Several previous studies have confirmed that exogenous ALA can alter the activities of antioxidant enzymes in different patterns according to its concentration, plant species and the type of environmental stress [ 25 , 26 , 28 ].…”

Section: Discussionmentioning

confidence: 99%

Alpha Lipoic Acid as a Protective Mediator for Regulating the Defensive Responses of Wheat Plants against Sodic Alkaline Stress: Physiological, Biochemical and Molecular Aspects

Ramadan

Alharbi

Alenzi

et al. 2022

Plants

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Recently, exogenous α-Lipoic acid (ALA) has been suggested to improve the tolerance of plants to a wide array of abiotic stresses. However, there is currently no definitive data on the role of ALA in wheat plants exposed to sodic alkaline stress. Therefore, this study was designed to evaluate the effects of foliar application by ALA at 0 (distilled water as control) and 20 µM on wheat seedlings grown under sodic alkaline stress (50 mM 1:1 NaHCO3 & Na2CO3; pH 9.7. Under sodic alkaline stress, exogenous ALA significantly (p ≤ 0.05) improved growth (shoot fresh and dry weight), chlorophyll (Chl) a, b and Chl a + b, while Chl a/b ratio was not affected. Moreover, leaf relative water content (RWC), total soluble sugars, carotenoids, total soluble phenols, ascorbic acid, K and Ca were significantly increased in the ALA-treated plants compared to the ALA-untreated plants. This improvement was concomitant with reducing the rate of lipid peroxidation (malondialdehyde, MDA) and H2O2. Superoxide dismutase (SOD) and ascorbate peroxidase (APX) demonstrated greater activity in the ALA-treated plants compared to the non-treated ones. Conversely, proline, catalase (CAT), guaiacol peroxidase (G-POX), Na and Na/K ratio were significantly decreased in the ALA-treated plants. Under sodic alkaline stress, the relative expression of photosystem II (D2 protein; PsbD) was significantly up-regulated in the ALA treatment (67% increase over the ALA-untreated plants); while Δ pyrroline-5-carboxylate synthase (P5CS), plasma membrane Na+/H+ antiporter protein of salt overly sensitive gene (SOS1) and tonoplast-localized Na+/H+ antiporter protein (NHX1) were down-regulated by 21, 37 and 53%, respectively, lower than the ALA-untreated plants. These results reveal that ALA may be involved in several possible mechanisms of alkalinity tolerance in wheat plants.

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“…Therefore, PBZ can delay senescence and extend the juvenility of seedlings, which increased the seedlings life without losses; additionally, it increased the resistance against most of pathogens in the nursery. Interestingly, few studies have reported the potential of paclobutrazol in improving the levels of chlorophyll, antioxidants, and proline contents under various biotic and abiotic stresses, as well as extending the plant growth cycle by delaying physiological maturity [ 40 , 41 , 42 , 43 ].…”

Section: Discussionmentioning

confidence: 99%

Paclobutrazol Improves the Quality of Tomato Seedlings to Be Resistant to Alternaria solani Blight Disease: Biochemical and Histological Perspectives

Shalaby

Taha

Taher

et al. 2022

Plants

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The production and quality of tomato seedlings needs many growth factors and production requirements besides controlling the phytopathogens. Paclobutrazol (PBZ) has benefit applications in improving crop productivity under biotic stress (Alternaria solani, the causal agent of early blight disease in tomatoes). In the current study, the foliar application of PBZ, at rates of 25, 50, and 100 mg L−1, was evaluated against early blight disease in tomatoes under greenhouse conditions. The roles of PBZ to extend tomato seedling lives and handling in nurseries were also investigated by measuring different the biochemical (leaf enzymes, including catalase and peroxidase) and histological attributes of tomato seedlings. Disease assessment confirmed that PBZ enhanced the quality of tomato seedlings and induced resistance to early blight disease post inoculation, at 7, 14, and 21 days. Higher values in chlorophyll content, enzyme activities, and anatomical features of stem (cuticle thickness) and stomata (numbers and thickness) were recorded, due to applied PBZ. This may support the delay of the transplanting of tomato seedlings without damage. The reason for this extending tomato seedling life may be due to the role of PBZ treatment in producing seedlings to be greener, more compact, and have a better root system. The most obvious finding to emerge from this study is that PBZ has a distinguished impact in ameliorating biotic stress, especially of the early blight disease under greenhouse conditions. Further studies, which consider molecular variables, will be conducted to explore the role of PBZ in more detail.

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Ascorbic Acid Enhances Growth and Yield of Sweet Peppers (Capsicum annum) by Mitigating Salinity Stress

Cited by 43 publications

References 73 publications

Acclimatization of In Vitro Banana Seedlings Using Root-Applied Bio-Nanofertilizer of Copper and Selenium

Acclimatization of In Vitro Banana Seedlings Using Root-Applied Bio-Nanofertilizer of Copper and Selenium

Alpha Lipoic Acid as a Protective Mediator for Regulating the Defensive Responses of Wheat Plants against Sodic Alkaline Stress: Physiological, Biochemical and Molecular Aspects

Paclobutrazol Improves the Quality of Tomato Seedlings to Be Resistant to Alternaria solani Blight Disease: Biochemical and Histological Perspectives

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