Effect of Salt Stress on Na Accumulation, Antioxidant Enzyme Activities and Activity of Cell Wall Peroxidase of Huckleberry (Solanum scabrum) and Eggplant (Solanum melongena)

Assaha, Dekoum V. M.; Liu, Liyun; Mekawy, Ahmad Mohammad M.; Ueda, Akihiro; Nagaoka, Toshinori; Saneoka, Hirofumi

doi:10.17957/ijab/15.0052

Cited by 21 publications

(5 citation statements)

References 32 publications

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“…The plant root systems can respond to sodium chloride toxicity by changing structure, such as reducing root length (Mahajan and Tuteja 2005). Previous studies have shown that cell‐wall peroxidase activity and H 2 O 2 levels increased by sodium salt stress, while exogenous H 2 O 2 and peroxidase inhibited plant root growth (Marius Assaha et al 2015). When the temperature is lower than 25/15°C, the salinity has a significant effect on the root length, and the temperature has little effect on it.…”

Section: Discussionmentioning

confidence: 99%

Effects of salinity and temperature on tuber sprouting and growth of Schoenoplectus nipponicus

et al. 2021

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In a scenario of climate change and intensive land-use change, the issue of salt marsh degradation caused by global warming and soil salinization is becoming more serious. A climate chamber experiment was conducted to examine the responses of tuber sprouting and seedling growth of Schoenoplectus nipponicus to variations in the temperature regimes (20/10, 25/15, 30/20 and 35/25°C; 12-h light/dark 12-h photoperiod) and different salt concentrations (0, 50, 75, and 100 mmol/L salinity). Results showed that the final sprouting percentage decreased with the increase in salinity and increased with the rising temperature. Salinity lower than 50 mmol/L was the most favorable for tuber sprouting. Under high salinity (75 and 100 mmol/L salinity), the inhibition of tuber sprouting at 20/10°C was greater than other temperature regimes. Along the temperature gradients, both plant height and leaf N content increased, and root length decreased under non-saline-alkali conditions, while plant height, leaf N content, and root length declined significantly under salt stress (50, 75, and 100 mmol/L salinity). With the increase in temperature, the production of tubers under the control treatments was enhanced significantly, but that under salt stress declined significantly. Under 0 mmol/L salinity, the accumulation of biomass in various organs increased with rising temperature. Biomass accumulation increased first and then declined for plants grown under salt stress, with a peak value of 25/15°C. Root: shoot ratio was reduced significantly under the combination of high salt stress (75 and 100 mmol/L salinity) and high temperatures (30/20°C and 35/25°C). Our study will contribute to a better understanding of the influence of climate warming and increasing serious human disturbances on this important wetland species.

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Section: Discussionmentioning

confidence: 99%

Effects of salinity and temperature on tuber sprouting and growth of Schoenoplectus nipponicus

et al. 2021

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“…The malondialdehyde (MDA) concentration in the leaf blades and roots was determined as described in Assaha et al [13]. Fresh leaf blades and roots (100 mg) were homogenized in 6 mL of an extraction buffer (10 mM HEPES, pH 7, 15% trichloroacetic acid (TCA), 0.375% thiobarbituric acid, 0.25 N HCl, 0.04% butylated hydroxyl toluene (BHT), and 2% ethanol (EtOH), and heated at 95 • C for 30 min.…”

Section: Measurement Of Lipid Peroxidation (Mda)mentioning

confidence: 99%

Relationship of Salinity Tolerance to Na+ Exclusion, Proline Accumulation, and Antioxidant Enzyme Activity in Rice Seedlings

et al. 2018

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Rice is a staple crop for over 50% of the world’s population, but its sensitivity to salinity poses a threat to meeting the worldwide demand. This study investigated the correlation of salinity tolerance to Na+ exclusion, proline accumulation, and the activity of antioxidant enzymes in some rice cultivars originating from Egypt. Giza 182 was shown to be the most tolerant of the five cultivars, as judged by visual symptoms of salt injury, growth parameters, and patterns of Na+ accumulation, while Sakha 105 appeared to be highly susceptible. In detail, Giza 182 accumulated the lowest Na+ concentration and maintained a much lower Na+/K+ ratio in all plant organs in comparison to Sakha 105. The salinity-tolerant varieties had higher accumulation of proline than the salinity-susceptible cultivars. The salinity-tolerant Giza 182 accumulated a higher concentration of proline, but the lipid peroxidation (MDA) level was significantly reduced compared to in the salinity-susceptible Sakha 105. In addition, Giza 182 had stronger activity of both catalase (CAT) and ascorbate peroxidase (APX) compared to Sakha 105. The findings of this study reveal that the salinity tolerance in rice is primarily attributable to Na+ exclusion, the accumulation of proline in rice organs, a low Na+/K+ ratio, and a low level of lipid peroxidation. The levels of the antioxidant enzymes CAT and APX and the accumulation of proline may play important roles in salinity tolerance in rice. However, the comparative involvement of individual antioxidant enzymes in salinity stress in rice should be further investigated. Giza 182 has the potential to be cultivated in salinity-affected areas, although the effects of salinity stress on its grain yield and quality should be evaluated during the full crop cycle.

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“…When MDA levels are low, the plant metabolism is strong, which is conducive to accumulating assimilation products. Marius et al (2015) showed that MDA accumulation is inversely proportional to the protective ability of plant tissues within a specific range. Our results showed that the MDA content of the soybean leaves decreased significantly after being sprayed with DPC.…”

Section: Discussionmentioning

confidence: 99%

Physiology and proteomics analyses reveal the regulatory mechanism of mepiquat chloride in soybean

Song

Tian

et al. 2023

Front. Sustain. Food Syst.

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Soybean is an important grain and oil crop cultivated worldwide. Mepiquat chloride (DPC), a plant growth regulator, is widely used in cotton planting; however, its application in soybean remains rarely studied. Herein, we explored DPC regulation in soybeans using morphology, physiology, and proteomics analyses. Morphological and physiological analyses showed that DPC significantly reduced the plant height and shoot dry weight, promoted the growth of lateral roots in a specific concentration range, increased the activities of the leaf protective enzymes (superoxide dismutase and catalase), and decreased and increased malondialdehyde and total flavonoid contents, respectively. Proteomic analysis of leaves treated with 100 mg/L DPC revealed that multiple proteins related to plant growth and stress resistance were regulated after treatment. The key proteins involved in photosynthesis and cell wall elongation in the two varieties of soybean were significantly downregulated and those related to promoting lateral root growth and stress resistance were significantly upregulated. Overall, DPC inhibited shoot growth and photosynthesis in soybean but promoted lateral root growth, enhanced protective enzyme activity, and improved the ability of plants to resist abiotic stress. This study preliminarily determined the suitable DPC concentration for soybean spraying and provided a theoretical basis for its rational application.

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Effect of Salt Stress on Na Accumulation, Antioxidant Enzyme Activities and Activity of Cell Wall Peroxidase of Huckleberry (Solanum scabrum) and Eggplant (Solanum melongena)

Cited by 21 publications

References 32 publications

Effects of salinity and temperature on tuber sprouting and growth of Schoenoplectus nipponicus

Effects of salinity and temperature on tuber sprouting and growth of Schoenoplectus nipponicus

Relationship of Salinity Tolerance to Na+ Exclusion, Proline Accumulation, and Antioxidant Enzyme Activity in Rice Seedlings

Physiology and proteomics analyses reveal the regulatory mechanism of mepiquat chloride in soybean

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