scholarly journals Influence of selenium on growth, lipid peroxidation and antioxidative enzyme activity in melon (Cucumis melo L.) seedlings under salt stress

2013 ◽  
Vol 82 (3) ◽  
pp. 193-197 ◽  
Author(s):  
Hu KeLing ◽  
Zhang Ling ◽  
Wang JiTao ◽  
You Yang
Keyword(s):  
Lipid Peroxidation ◽  
Enzyme Activity ◽  
Salt Stress ◽  
Cucumis Melo ◽  
Growth Parameters ◽  
Dry Weight ◽  
Physiological Effect ◽  
Antioxidative Enzyme ◽  
Stem Length ◽  
Antioxidative Enzyme Activity

The objective of this study was to investigate the effect of exogenous selenium (Se) supply (0, 2, 4, 8, 16 μM) on the growth, lipid peroxidation and antioxidative enzyme activity of 100 mM NaCl-stressed melon (<em>Cucumis melo</em> L.) seedlings. Salt stress significantly reduced the growth attributes including stem length, stem diameter, dry weight and increased antioxidative enzyme activity [superoxide dismutase (SOD), peroxidase (POD), catalase (CAT)]. Moreover, the plant exhibited a significant increase in electrolyte leakage and malondialdehyde (MDA) content under NaCl stress. Se supplementation not only improved the growth parameters but also successfully ameliorated the adverse effect caused by salt stress in melon seedlings. However, the mitigation of NaCl-stressed seedlings was different depending on the Se concentration. At lower concentrations (2–8 μM), Se improved growth and acted as antioxidant by inhibiting lipid peroxidation and increasing in SOD and POD enzymes activity under salt stress. At higher concentrations (16 μM), Se exerted diminished beneficial effects on growth. Whereas CAT activity was enhanced. The result indicated that Se supplementation had a positive physiological effect on the growth and development of salt-stressed melon seedlings.

scholarly journals Role of Cystoseira mediterranea extracts (Sauv.) in the Alleviation of salt stress adverse effect and enhancement of some Hordeum vulgare L. (barley) growth parameters

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Leila Bensidhoum ◽  
El-hafid Nabti
Keyword(s):  
Hydrogen Peroxide ◽  
Lipid Peroxidation ◽  
Salt Stress ◽  
Hordeum Vulgare ◽  
Shoot Growth ◽  
Growth Parameters ◽  
Membrane Integrity ◽  
Dry Weight ◽  
Hordeum Vulgare L

AbstractCystoseira mediterranea (Sauv.) extract was tested for its ability to restore barley (Hordeum vulgare) growth under salt stress (350 mM NaCl), shoot growth; membrane integrity; lipid peroxidation and hydrogen peroxide determination were performed. In normal conditions, the obtained data revealed the ability of the extract to stimulate most of barley growth parameters. However, it showed significant effect on most of barley growth parameters (plant height, fresh and dry weight of shoots and roots) and chlorophyll content, under salt stress. The measurement of stress parameters (membrane integrity, lipid peroxidation and hydrogen peroxide) revealed significant effect of C. mediterranea extract on reducing the deleterious impact of salt stress on barley seedlings.

scholarly journals Transcriptome, physiological and biochemical analysis of Triarrhena sacchariflora in response to flooding stress

BMC Genetics ◽  
2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Jia Wang ◽  
Han Sun ◽  
Jiajin Sheng ◽  
Surong Jin ◽  
Fasong Zhou ◽  
...  
Keyword(s):  
Lipid Peroxidation ◽  
Enzyme Activity ◽  
Molecular Mechanisms ◽  
Soluble Sugar ◽  
Antioxidative Enzyme ◽  
Pathway Enrichment Analysis ◽  
Photosynthetic System ◽  
Flooding Stress ◽  
Antioxidative Enzyme Activity ◽  
Physiological And Biochemical

Abstract Background In recent decades, the frequency of flooding is increasing with the change of global climate. Flooding has become one of the major abiotic stresses that seriously affect growth and development of plants. Triarrhena sacchariflora Nakai has been considered a promising energy crop for utilization in ethanol production. Flooding stress is among the most severe abiotic stressors in the production of Nakai. However, the physiological and molecular biological mechanisms of Nakai response to flooding is still unclear. In the present study, in order to understand the molecular mechanisms of Nakai in response to flooding stress, the transcriptome, physiological and biochemical were investigated. Results The results demonstrated that significant physiological changes were observed in photosynthetic system, antioxidative enzyme activity, chlorophyll, carotenoid, proline, lipid peroxidation and soluble sugar content under normal and flooding treatments. Such as, the chlorophyll, carotenoid contents and photosynthetic system were significantly decreased. Whereas, the antioxidative enzyme activity, proline, lipid peroxidation and soluble sugar has increased first and then decreased under treatments compared with the normal plants. Additionally, a total of 8832, 6608 and 3649 unigenes were validated to be differentially expressed under different treatments, respectively. Besides, gene ontology enrichment and Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis of the different expression levels of genes also presented processes, which involved in photosynthesis, sucrose catabolism, glycolysis, stress response and defense, phytohormone biosynthesis and signal transduction. Conclusions The results provide a comprehensive view of the complex molecular events involved in the response to flooding stress of Nakai leaves, which also will promote the research in the development of flood-resistant crops and provide new tools for Nakai breeders.

scholarly journals Plant Growth, Antioxidative Enzymes and Lipid Peroxidation in Sunflower Seedlings Supplemented With Eichhornia crassipes Organic Fertilizer Under Drought Stress Conditions

2018 ◽  
Vol 11 (1) ◽  
pp. 504
Author(s):  
Rifandreo Monteiro Barbosa ◽  
Paulo Ovídio Batista de Brito ◽  
Francisca Raíssa da Silva Costa ◽  
Roberto Albuquerque Pontes Filho ◽  
Francisco Holanda Nunes Júnior ◽  
...  
Keyword(s):  
Lipid Peroxidation ◽  
Enzyme Activity ◽  
Drought Stress ◽  
Plant Growth ◽  
Eichhornia Crassipes ◽  
Organic Fertilizer ◽  
Antioxidative Enzyme ◽  
Stress Conditions ◽  
Semiarid Region ◽  
Antioxidative Enzyme Activity

In the semiarid region of the Brazilian Northeast, there is still the occurrence of soils with low concentrations of organic mass and nutrients. Eichhornia crassipes (water hyacinth) is recognized as one of the top ten endemic herbs in the world. However, its accumulation capacity means it can be an alternative source of nutrients. The objective of this study was to analyse the effects of macrophyte organic residue (ROM) on plant growth, antioxidative enzyme activity and membrane lipid peroxidation in leaves and roots of sunflower seedlings submitted to drought stress conditions. The experiment was conducted under greenhouse conditions at the Instituto Federal de Educa&ccedil;&atilde;o, Ci&ecirc;ncia e Tecnologia do Cear&aacute;, Maracana&uacute; Campus, Brazil. Samples of E. crassipes were collected in the Parangaba Lagoon, Fortaleza, Cear&aacute;, Brazil. The treatments were: 1) 100% (by volume) sand; 2) sand + fertilizer (following the recommendation of 80 kg of N/ha), and 3) sand + 100% of the recommended nitrogen in macrophytes (RN). In general, the use of ROM caused better seedling growth in relation to the other treatments in all conditions studied. Increases in antioxidative enzyme activity and reductions in the deleterious effects of drought stress on plant growth were observed.

scholarly journals Mitigation of salt stress in rice plant at germination stage by using methyl jasmonate

2016 ◽  
Vol 2 (1) ◽  
pp. 74-81 ◽  
Author(s):  
Sakil Mahmud ◽  
Shayla Sharmin ◽  
Bishan Lal Das Chowdhury ◽  
Mohammad Anowar Hossain ◽  
Muhammad Javidul Haque Bhuiyan
Keyword(s):  
Salt Stress ◽  
Methyl Jasmonate ◽  
Root Length ◽  
Growth Parameters ◽  
Dry Weight ◽  
Germination Percentage ◽  
Alpha Amylase ◽  
Rice Varieties ◽  
Biochemical Component ◽  
Germination Stage

To explore the possibility of using methyl jasmonate (MeJA) for alleviation of salt stress, the present study was conducted where six rice varieties (BRRI dhan31, BRRI dhan46, Gota, Kajalsail, Pokkali and Pengek) were grown in non saline (0 dSm-1), saline (12 dSm-1), saline (12 dSm-1) + 10 ?M MeJA and saline (12 dSm-1) + 20 ?M MeJA conditions at germination stage (till the 9 days). MeJA was applied by imbibing seeds in it for 24 hours. To evaluate the effect of MeJA on saline stressed plant at germination stage, change in growth parameters namely germination percentage, shoot and root length, fresh and dry wt. of shoot, fresh and dry wt. of root and biochemical component- activity of alpha-amylase were monitored. Salinity had a minimum effect on final germination percentage (FGP) of rice varieties, but delayed in attaining it. MeJA had least positive effect. Salinity significantly reduced the shoot and root length, fresh and dry weight of all the varieties. MeJA had more decreasing effect in susceptible varieties while increasing effect in moderately tolerant and tolerant. Activity of alpha-amylase in germinated seed varied from 0.051 mg to 0.111 mg mal./mg tissue. At 12dSm-1 salinity, susceptible and moderately tolerant varieties showed significant reduction but tolerant showed significant increase. MeJA intensified the negative effect further in susceptible varieties. In tolerant and moderately tolerant varieties, increment in activity took place and 10 ?M had a better effect over 20 ?M MeJA.Asian J. Med. Biol. Res. March 2016, 2(1): 74-81

scholarly journals Effect of salt stress on some sweet corn (Zea mays L. var. saccharata) genotypes

2015 ◽  
Vol 67 (3) ◽  
pp. 993-1000 ◽  
Author(s):  
Lydia Shtereva ◽  
Roumiana Vassilevska-Ivanova ◽  
Tanya Karceva
Keyword(s):  
Zea Mays ◽  
Salt Stress ◽  
Zea Mays L ◽  
Sweet Corn ◽  
Growth Parameters ◽  
Dry Weight ◽  
Germination Percentage ◽  
F1 Hybrid ◽  
Salt Stress Condition ◽  
Salinity Levels

An experiment was carried out hydroponically under laboratory conditions to investigate the effect of salt stress on several physiological and biochemical parameters of three sweet corn (Zea mays L. var. saccharata) genotypes: lines 6-13, C-6 (pollen source) and their heterotic F1 hybrid ?Zaharina?. The degree of salinity tolerance among these genotypes was evaluated at three different sodium chloride (NaCl) concentrations: 0 mM, 100 mM, 125 mM and 150 mM. Seed germination, plant growth and biochemical stress determining parameters such as malondialdehyde (MDA), proline content and hydrogen peroxide (H2O2) levels were compared between seedlings of lines and hybrid. The obtained results indicated that both lines and hybrid have similar responses at different salinity levels for all examined traits. All the seedlings? growth parameters, such as germination percentage, root length, shoot length, root and shoot fresh and dry weight, decreased with increasing salinity level. MDA, proline and H2O2 increased at different saline conditions in comparison to the control. Based on the results, of the three genotypes examined, the hybrid Zaharina, followed by line C-6, was more salt-sensitive than line 6-13 in salt stress condition.

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