Lanthanum improves the antioxidant capacity in chloroplast of tomato seedlings through ascorbate-glutathione cycle under salt stress

2018 ◽  
Vol 232 ◽  
pp. 264-268 ◽  
Author(s):  
Guangyuan Huang ◽  
Changjuan Shan
Keyword(s):  
Salt Stress ◽  
Antioxidant Capacity ◽  
Tomato Seedlings ◽  
Glutathione Cycle

scholarly journals Engineered BcZAT12 gene mitigates salt stress in tomato seedlings

2021 ◽  
Vol 27 (3) ◽  
pp. 535-541
Author(s):  
Avinash Chandra Rai ◽  
Ashutosh Rai ◽  
Kavita Shah ◽  
Major Singh
Keyword(s):  
Salt Stress ◽  
Tomato Seedlings

scholarly journals Effect of ascorbic acid on morphological and biochemical parameters in tomato seedling exposure to salt stress

2015 ◽  
Vol 26 (2) ◽  
pp. 21-25 ◽  
Author(s):  
Marcelina Krupa-Małkiewicz ◽  
Beata Smolik ◽  
Dominik Ostojski ◽  
Maja Sędzik ◽  
Justyna Pelc
Keyword(s):  
Ascorbic Acid ◽  
Salt Stress ◽  
Biochemical Parameters ◽  
Field Conditions ◽  
Tomato Seedling ◽  
Tomato Plants ◽  
Chl A ◽  
Tomato Seedlings ◽  
Root And Shoot Length ◽  
Mda Content

AbstractThe aim of this study is to determine the effect of both NaCl and KCl alone and in comparison to AsA on the morphological and some biochemical parameters of Oxheart and Vilma cultivars of tomato under laboratory and field conditions. A combination of salt applied in the laboratory experiment caused a significant effect on seed germination and root and shoot length and a significant reduction of Chl a, Chl b and Car contents in 14-day-old tomato seedlings. However, seedlings of cultivar Vilma were characterised by higher tolerance to applied salt stress.NaCl caused a significant decrease in Chl a, Chl b and Car, and an increase in Pro and MDA content in the leaves of Vilma cultivar under field conditions. Besides, tomato plants cv. Vilma treated with NaCl alone or NaCl with ascorbic acid developed longer roots, from 48 to 73%, compared to the control.

scholarly journals Effects of Salt Stress on Fruit Antioxidant Capacity of Wild (Solanum chilense) and Domesticated (Solanum lycopersicum var. cerasiforme) Tomatoes

Agronomy ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1481
Author(s):  
Juan Pablo Martínez ◽  
Raúl Fuentes ◽  
Karen Farías ◽  
Carolina Lizana ◽  
Juan Felipe Alfaro ◽  
...  
Keyword(s):  
Salt Stress ◽  
Antioxidant Capacity ◽  
Solanum Lycopersicum ◽  
Fruit Weight ◽  
Interspecific Crosses ◽  
Antioxidant Power ◽  
Tomato Species ◽  
In The Wild ◽  
Solanum Chilense ◽  
The Impact

The effects of salt on the quality of fruits were investigated in order to compare the impact of salt on key fruit properties of the cultivated domesticated tomato species (Solanum lycopersicum) and its wild halophyte relative Solanum chilense. To this end, cherry tomato plants (S. lycopersicum var. cerasiforme) and from accession LA4107 (S. chilense) were maintained for 112 days in the absence or presence of NaCl (40 and 80 mM) in nutrient solution. Among others, salinity decreased fruit weight and increased total soluble solid (TSS) in S. lycopersicum but not in S. chilense. The fruit antioxidant capacity estimated by ferric reducing antioxidant power (FRAP) analysis was higher in S. chilense than in S. lycopersicum and increased in the former while it decreased in the latter in response to NaCl. Salinity increased the lycopene (LYC) content but decreased ß-carotene (b-CAR) concentration in the fruits of S. lycopersicum, while these compounds were not detected in the wild halophyte S. chilense. The oxidative status of salt-treated fruits was more tightly regulated in S. chilense than in S. lycopersicum. The two considered species, however, possess complementary properties and interspecific crosses may therefore be considered as a promising option for the improvement of salt-stress resistance in tomatoes.

scholarly journals Melatonin-Mediated Regulation of Growth and Antioxidant Capacity in Salt-Tolerant Naked Oat under Salt Stress

2019 ◽  
Vol 20 (5) ◽  
pp. 1176 ◽  
Author(s):  
Wenying Gao ◽  
Zheng Feng ◽  
Qingqing Bai ◽  
Jinjin He ◽  
Yingjuan Wang
Keyword(s):  
Salt Stress ◽  
Antioxidant Capacity ◽  
Stress Responses ◽  
Nacl Stress ◽  
Mitogen Activated Protein Kinase ◽  
Naked Oat ◽  
Exogenous Application ◽  
Transcription Factor Genes ◽  
Mitogen Activated Protein

Melatonin (MT; N-acetyl-5-methoxytryptamine) is a pleiotropic signaling molecule that has been demonstrated to play an important role in plant growth, development, and regulation of environmental stress responses. Studies have been conducted on the role of the exogenous application of MT in a few species, but the potential mechanisms of MT-mediated stress tolerance under salt stress are still largely unknown. In this study, naked oat seedlings under salt stress (150 mM NaCl) were pretreated with two different concentrations of MT (50 and 100 μM), and the effects of MT on the growth and antioxidant capacity of naked oat seedlings were analyzed to explore the regulatory effect of MT on salt tolerance. The results showed that pretreating with different concentrations of MT promoted the growth of seedlings in response to 150 mM NaCl. Different concentrations of MT reduced hydrogen peroxide, superoxide anion, and malondialdehyde contents. The exogenous application of MT also increased superoxide dismutase, peroxidase, catalase, and ascorbate peroxide activities. Chlorophyll content, leaf area, leaf volume, and proline increased in the leaves of naked oat seedlings under 150 mM NaCl stress. MT upregulated the expression levels of the lipid peroxidase genes lipoxygenase and peroxygenase, a chlorophyll biosynthase gene (ChlG), the mitogen-activated protein kinase genes Asmap1 and Aspk11, and the transcription factor genes (except DREB2), NAC, WRKY1, WRKY3, and MYB in salt-exposed MT-pretreated seedlings when compared with seedlings exposed to salt stress alone. These results demonstrate an important role of MT in the relief of salt stress and, therefore, provide a reference for managing salinity in naked oat.

scholarly journals 24-Epibrassinolide (EBR) Confers Tolerance against NaCl Stress in Soybean Plants by Up-Regulating Antioxidant System, Ascorbate-Glutathione Cycle, and Glyoxalase System

Biomolecules ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 640 ◽  
Author(s):  
Alam ◽  
Albalawi ◽  
Altalayan ◽  
Bakht ◽  
Ahanger ◽  
...  
Keyword(s):  
Salt Stress ◽  
Nacl Stress ◽  
Enzymatic Antioxidants ◽  
Oxidative Stress Biomarkers ◽  
Gas Exchange Parameters ◽  
Stress Biomarkers ◽  
Soybean Plants ◽  
Glutathione Cycle ◽  
Na Uptake ◽  
Glyoxalase Cycle

: The present research was performed to assess the effect of 24-epibrassinolide (EBR) on salt-stressed soybean plants. Salt stress suppressed growth, biomass yield, gas exchange parameters, pigment content, and chlorophyll fluorescence, but all these parameters were up-regulated by EBR supply. Moreover, salt stress increased hydrogen peroxide, malondialdehyde, and electrolyte leakage. EBR supplementation reduced the accumulation of oxidative stress biomarkers. The activities of superoxide dismutase and catalase, and the accumulation of proline, glycinebetaine, total phenols, and total flavonoids increased with NaCl stress, but these attributes further increased with EBR supplementation. The activities of enzymes and the levels of non-enzymatic antioxidants involved in the Asc-Glu cycle also increased with NaCl stress, and further enhancement in these attributes was recorded by EBR supplementation. Salinity elevated the methylglyoxal content, but it was decreased by the EBR supplementation accompanying with up-regulation of the glyoxalase cycle (GlyI and GlyII). Salinity enhanced the Na+ uptake in root and shoot coupled with a decrease in uptake of Ca2+, K+, and P. However, EBR supplementation declined Na+ accumulation and promoted the uptake of the aforementioned nutrients. Overall, EBR supplementation regulated the salt tolerance mechanism in soybean plants by modulating osmolytes, activities of key enzymes, and the levels of non-enzymatic antioxidants.

Lettuce production and antioxidant capacity are differentially modified by salt stress and light intensity under ambient and elevated CO2

2013 ◽  
Vol 170 (17) ◽  
pp. 1517-1525 ◽  
Author(s):  
Usue Pérez-López ◽  
Jon Miranda-Apodaca ◽  
Alberto Muñoz-Rueda ◽  
Amaia Mena-Petite
Keyword(s):  
Salt Stress ◽  
Light Intensity ◽  
Antioxidant Capacity ◽  
Elevated Co2
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