Ali bagheri Articles List

List of Articles Ali bagheri

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1 - Study of Biochemical Parameters and Antioxidant Enzymes Activities on Oryza sativa under Salt Stress
Ali Asghar Bagheri Fariba Khosravinejad

Abiotic stress including Salt stress is the major limiting factors of growth and crop production in arid and semiaridregions. Many of the Salinity affects are seen at the cellular levels. In order to understand the response of Oryza sativa to salt stress, some of antiox More

Abiotic stress including Salt stress is the major limiting factors of growth and crop production in arid and semiaridregions. Many of the Salinity affects are seen at the cellular levels. In order to understand the response of Oryza sativa to salt stress, some of antioxidant enzyme activities, Lipid peroxidation and Proline content were analyzed. Oryza sativa plant was treated by NaCl 0(control), 100, 200 and 300 mM for 14 days. For this purpose, a factorial design based on completely randomized design with three replications was used. The results showed that Growth parameters for example fresh and dry weight and height of shoot decreased under increasing NaCl. With increasing the concentration of NaCl, The activity of Catalase(CAT) and Ascorbat peroxidase(APX) were increased, but Superoxide dismutase (SOD) activity increased with increasing NaCl to 200 mM and then decreased at 300mM. Proline (Pro) and Malondialdehyde(MDA) contents respectively increased 2 and 3.6-fold at 300mM NaCl relative to the 0mM NaCl. Our results showed that by increasing the activity of CAT, SOD and APX associated with increased Proline had a positive effect on salt tolerance of Oryza sativa. Manuscript profile
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2 - Effect of endophytic fungus, Piriformospora indica, on growth parameters and activity of antioxidant enzymes of rice (Oryza sativa L.) under salinity stress
Ali Asghar Bagheri Fariba Khosravinejad

Abiotic stress including salinity is the major limiting factors of growth and crop production in arid and semiaridregions. The endophytic fungus,Piriformospora indica has a pronounced growth-promoting activity and also increasesplant resistance to environmental stresses More

Abiotic stress including salinity is the major limiting factors of growth and crop production in arid and semiaridregions. The endophytic fungus,Piriformospora indica has a pronounced growth-promoting activity and also increasesplant resistance to environmental stresses including salinity, drought and plantpathogens. In order to study, experiment was conducted in completely randomized block design with three replicationsand with two levels of p.indica–inoculated and non-p.indica-inoculated rice(control) and four levels of NaCl (0, 100, 200 and 300 mM). This research deals with the potential of P. indica to improve growth parameters of rice (Oryza sativa L.) and increase its resistance to salt stress with base on increasing of antioxidant enzyme activities. Our study demonstrated P.indica significantly increased growth parameters for example shoot and root biomass, Relative Water Content(RWC), proline content and activities of antioxidant enzymes such as glutathione reductase (GR), ascorbate peroxidase (APX), catalase (CAT), superoxide dismutase (SOD) and in contrast, decreased malondialdehyde (MDA) content (produced from peroxidation of membrane lipids) in p.indica–inoculated than non-p.indica-inoculated rice under all of salt stress conditions.So our results showed that P. indica-induced protection of O.sativa against salt stress could be mediated by antioxidant enzymes. Manuscript profile
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3 - A study on the inhibitory effects of taxifolin on amyloid fibrillation of hen egg white lysozyme
Mohsen Mahdavimehr Ali Akbar Meratan Ali Asghar Bagheri Fariba Khosravinejad

Among therapeutic approaches for amyloid-related diseases, attention has recently turned to the use of natural products as effective anti-aggregation compounds. Although a wealth of in vitro and in vivo evidence indicates some common inhibitory activity of these compoun More

Among therapeutic approaches for amyloid-related diseases, attention has recently turned to the use of natural products as effective anti-aggregation compounds. Although a wealth of in vitro and in vivo evidence indicates some common inhibitory activity of these compounds, they don’t generally suggest the same mechanism of action. In the present study, using a range of techniques including Thioflavin T and Nile red fluorescence assays, Congo red absorbance measurements, and atomic force microscopy the ability of taxifolin on the inhibition of HEWL amyloid fibrillation was investigated. Obtained results demonstrated that taxifolin exerts its inhibitory effect by binding to HEWL prefibrillar species. Furthermore, it’s binding results in diverting the amyloid pathway toward formation of very large globular, chain-like aggregates with low β-sheet content and reduced solvent-exposed hydrophobic patches. ThT fluorescence measurements show that the binding capacity of taxifolin is significantly reduced, upon generation of large protofibrillar aggregates at the end of growth phase. We believe these results may help design promising inhibitors of protein aggregation for amyloid-related diseases. Manuscript profile

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List of Articles Ali bagheri