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Open Access Article
1 - بررسی اثر نانو ذره سلنیوم بر تحمل تنش خشکی در گیاه گوجه گیلاسی(Solanum lycopersicum L. var.cerasiforme)
علیرضا ایرانبخش مریم نیسانیان رحیم احمدوند زهرا اوراقی اردبیلی مصطفی عبادی -
Open Access Article
2 - بررسی اثر نانو سلنیوم بر جوانه زنی بذر گوجه گیلاسی(Solanum lycopersicum L. var.cerasiforme) در شرایط آبیاری و تنش آبی
مریم نیسانیان علیرضا ایرانبخش رحیم احمدوند زهرا اوراقی اردبیلی مصطفی عبادی -
Open Access Article
3 - Improvment of Physiological and Agronomic Characteristics of Winter Oilseed Rape (Brassica napus L.) with Nano-Selenium Application
Gholam Behzad Parisa Sheikhzadeh Nasser Zare Mitra RostamiTo investigate the effect of foliar selenium nanoparticle applications on the agronomic and yield characteristics of winter oilseed rape, with three levels (0 (control), 25 and 50 mg.L-1) at two growth stages (6-8 leaves and 50% flowering) at the research farm station o MoreTo investigate the effect of foliar selenium nanoparticle applications on the agronomic and yield characteristics of winter oilseed rape, with three levels (0 (control), 25 and 50 mg.L-1) at two growth stages (6-8 leaves and 50% flowering) at the research farm station of the University of Mohaghegh Ardabili during 2018-2019 was studied. The results showed that the selenium nanoparticle applications increased the photosynthetic pigments and the relative water content (RWC) of the leaves significantly. Foliar spraying with 50 mg.L-1 selenium nanoparticle increased in the chlorophyll a and b and total chlorophyll content by 37.04, 44.51 and 39.68%, respectively, as compared to the control treatment. On the other hands, selenium nanoparticle application increased the plant height, number of branches and stem diameter via improving the photosynthetic pigments content and RWC of winter oilseed rape significantly. The biological yield, harvest index and seed oil content of 25 and 50 mg.L-1 of selenium nanoparticle treatments were significantly higher than those of the control. The foliar spraying of oilseed rape plants with selenium nanoparticle applications improved the grain yield throught increase in the number of pods per plant, the number of seeds per pod and the 1000 grain weight significantly. Thus, the highest improvement in the grain yield per unit area (about 34.16 %) was obtained with application of 50 mg.L-1 selenium nanoparticles in comparison with control treatment. In general, the application of 50 mg.L-1 selenium nanoparticles had a positive and significant effect on the physiological (photosynthetic pigments content and RWC) and agronomical characteristics at plants, as to the plant height, branches number, stem diameter, the number of pods per plant, the number of seeds per pod, the 1000-grain weight and seed oil content of winter rape. Manuscript profile -
Open Access Article
4 - Effect of nanoselenium and sodium selenate on some of physiological and biochemical parameters of Vasha (Dorema ammoniacum L.)
Elham Abedi Ramazan Ali Khavari-Nejad Laleh Mosharraf Sara Saadatmand Hossein Ali Asadi-GharnehSelenium with antioxidant properties, has positive effects on growth and development of biological activities of many plants but its excessive levels in soil causes physiological problems. This study was conducted to investigate the effect of selenium (bulk) and nanosel MoreSelenium with antioxidant properties, has positive effects on growth and development of biological activities of many plants but its excessive levels in soil causes physiological problems. This study was conducted to investigate the effect of selenium (bulk) and nanoselenium on some of physiological and biochemical of Vasha, in a completely randomized experiment. Selenium in form of sodium selenate was applied in nutrient solution at concentrations (0, 2.5, 5 and 10 mg L–1) and nanoselenium at concentrations (0, 2.5, 5, 10 and 20 mg L–1). The results showed that application of both bulk and nano-Se treatments significantly increased plant growth parameters (i.e. length of roots and shoot, the root and shoot fresh and dry weights), as well as the content of photosynthetic pigment, total flavonoids, total phenol, anthocyanin and carbohydrate content by 2.5 mg L–1 and 10 mg L– 1 of selenium and nanoselenium respectively. Moreover, the abovementioned concentrations were associated with a significant increase in plant antioxidant activity. All treatments reduced malondialdehyde. The most increase in chlorophyll a was observed at a concentration of 10 mg L-1 nano-Se, which decreased with increasing selenium concentration compared to the control treatment. The results showed that the positive effect of selenium on the growth and increase of phenolic compounds depends on the type and concentration of selenium application. Manuscript profile -
Open Access Article
5 - Synthesis analysis and antibacterial activity of selenium nanoparticles produced by Pseudomonas alcaligenes
morahem ashengroph Seyedeh Roya HosseiniBackground & Objectives: Selenium nanoparticles have a wide range application in industry, biomedical and environmental fields due to their unique physical, chemical and photoelectrical properties. This study was aimed to use aquatic bacteria in bioreduction of sele MoreBackground & Objectives: Selenium nanoparticles have a wide range application in industry, biomedical and environmental fields due to their unique physical, chemical and photoelectrical properties. This study was aimed to use aquatic bacteria in bioreduction of selenite oxyanioninto elemental nano-selenium. Materials & Methods: Synthesized selenium nanoparticles were characterized by spectroscopic analysis and electromicrographs prepared by scanning electron microscopy (SEM). The efficacy of the antimicrobial activity of the synthesized selenium nanoparticles against some Gram-positive and Gram-negative human pathogenic bacteria was also investigated by the agar well diffusion test. Results: Sixteen selenite-resistant bacterial strains were isolated based on selective enrichment techniques in Tryptic Soy Agar (TSA) medium containing 5 mM selenite ion. Our results showed that Pseudomonas alcaligenes SR5 coastal seawater isolate can reduce selenite oxyanion into selenium nanoparticles. Furthermore, the results showed that extracellular selenium nanoparticles with an average size of 36 nm were formed in an optimum selenite concentration of 3 mM and an optimum initial biomass concentration of 15 g/l, following 96 h incubation at 25ᵒ C at (200 rpm under resting cell condition. Conclusion: The current study is the first report on extracellular synthesis of selenium nanoparticles using P. alcaligenes. The produced bio-nanoparticles showed a growth inhibitory effect against four tested pathogenic bacterial strains. Manuscript profile -
Open Access Article
6 - Effects of Replacing Mineral Selenium Supplement with Selenium Nanoparticles on Blood Parameters of Dairy Calves
Mohammad Karimi mehdi Ganjkhanlou farhang fataheiThe purpose of this study was to investigate the effects of replacing mineral selenium supplements with nano selenium particles in the feeding of dairy calves and its effects on blood metabolites, and improving the growth performance and skeletal structure of infant cal MoreThe purpose of this study was to investigate the effects of replacing mineral selenium supplements with nano selenium particles in the feeding of dairy calves and its effects on blood metabolites, and improving the growth performance and skeletal structure of infant calves. The number of 32 newborn Holstein calves with an average body weight of 37.85 ± 4.35 kg in the form of a completely randomized design with 4 treatments (eight calves in each treatment) for 83 days according to the supplemental consumption of milk or drinking water with sources Different selenium were placed. Treatments include: 1) inorganic selenium: providing 0.3 mg of selenium per kilogram of dry matter with sodium selenite, 2) low level of nano selenium: providing 0.15 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium, 3 (Medium level of nano-selenium: providing 0.3 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium, 4) High level of nano-selenium: providing 0.45 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium. The results showed that the calves that received nano selenium had no significant difference in the parameters of aspartate transferase and alanine transaminase compared to sodium selenite. The concentration of glutathione peroxidase in 42 days in nano selenium treatments increased and malondialdehyde decreased linearly significantly compared to mineral selenium (P=0.03). The results of this study showed that nano selenium was effective in improving the antioxidant status of calf blood during post-weaning. Manuscript profile -
Open Access Article
7 - Effects of Replacing Mineral Selenium Supplement with Selenium Nanoparticles on Feed Digestibility and Ruminal Parameters of suckling Dairy Calves
Mohammad Karimi mehdi Ganjkhanlou farhang fatehiThis study aimed to investigate the effects of replacing mineral selenium supplement with nano-selenium particles in feeding infant calves and its effects on nutrient digestibility and, rumen fermentation characteristics. The number of 32 newborn Holstein calves with an MoreThis study aimed to investigate the effects of replacing mineral selenium supplement with nano-selenium particles in feeding infant calves and its effects on nutrient digestibility and, rumen fermentation characteristics. The number of 32 newborn Holstein calves with an average body weight of 37.85 ± 4.35 kg in the form of a completely randomized design with 4 treatments (eight calves in each treatment) for 83 days according to the supplemental consumption of milk or drinking water with sources different selenium were placed. Treatments include: 1) mineral selenium: providing 0.3 mg of selenium per kilogram of dry matter with sodium selenite source, 2) Low level of nano selenium: providing 0.15 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium source, 3 (Medium level of nano-selenium: providing 0.3 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium source, 4) High level of nano-selenium: providing 0.45 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium source. The results showed that improve the digestibility of protein and insoluble fibers in neutral detergent with nano-selenium. Ruminal ammonia nitrogen concentration in calves fed with rations supplemented with nano-selenium tended to decrease (p = 0.08) in a quadratic way, and its average level was the lowest. Acetate concentration for calves fed nano-selenium decreased (p < 0.01), while propionate concentration increased (p < 0.05) for calves fed nano-selenium. The results of this study showed that nano-selenium was effective in improving feed digestibility. Manuscript profile -
Open Access Article
8 - The effects of replacing mineral selenium supplement with selenium-nano particles on the performance of dairy calves
Mohammad Karimi mehdi Ganjkhanlou farhang fatahei aboulfazl zali sadeghi mostafa ronak rafiporThe purpose of this study was to investigate the effects of replacing mineral selenium supplement with nano selenium particles in the feeding of infant calves and its effects on nutrient digestibility, rumen fermentation characteristics, blood metabolites, and improving MoreThe purpose of this study was to investigate the effects of replacing mineral selenium supplement with nano selenium particles in the feeding of infant calves and its effects on nutrient digestibility, rumen fermentation characteristics, blood metabolites, and improving the growth performance and skeletal structure of infant calves. The number of 32 newborn Holstein calves with an average body weight of 37.85 ± 4.35 kg in the form of a completely randomized design with 4 treatments (eight calves in each treatment) for 83 days according to the supplemental consumption of milk or drinking water with sources Different selenium were placed. Treatments include: 1) inorganic selenium: providing 0.3 mg of selenium per kilogram of dry matter with sodium selenite, 2) low level of nano selenium: providing 0.15 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium, 3 (Medium level of nano-selenium: providing 0.3 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium, 4) High level of nano-selenium: providing 0.45 mg of selenium per kilogram of dry matter with nanoparticles prepared from selenium. . The results showed that supplementing milk with selenium nanoparticles had no effect on the performance of calves during the pre-weaning period, but significantly improved it after weaning compared to calves that were fed sodium selenite. The feed efficiency in the second period increased exponentially (P<0.01) and the average level was the highest. Improve the digestibility of protein and insoluble fibers in neutral detergent with nanoselenium. Some parameters of skeletal growth were improved by supplementation with selenium nanoparticles. Manuscript profile -
Open Access Article
9 - The Study of the Effect of Nano-selenium on Oogenesis and Uterus Changes in Adult NMRI Mouse Strain
A. Sharafli N. Hayati roudbari K. Parivar P. MaghamiDifferent nutrients affecting male reproductive organs have a significant effect on the prevention and treatment of infertility; one of these elements is selenium. This study was aimed at evaluating selenium nanoparticles (NSAs) in oogenesis and uterine changes in adult MoreDifferent nutrients affecting male reproductive organs have a significant effect on the prevention and treatment of infertility; one of these elements is selenium. This study was aimed at evaluating selenium nanoparticles (NSAs) in oogenesis and uterine changes in adult female NMRI mice. In this study, 30 adult female NMRI mice were selected and randomly assigned to five groups: controls, Sham and three experimental groups. Control group did not receive any material, the Sham group received solvent and the experimental groups received Nano selenium at three doses of 0.2 mg/kg, 0.3 mg/kg, 0.4 mg/kg for 30 days. The weight of the animals in the experimental groups at the high dose was significantly reduced. The weight and diameter of the ovary declined, but the results were not significant. The number of primordial follicles, primary and secondary follicles, and atretic follicle have decreased. The number of Graafian follicles decreased at the dose of 0.4 mg/kg of Nano selenium and corpus luteum decreased at the dose of 0.3 mg/kg of Nano selenium. The diameter of the secondary follicle was increased, but it was not significant. The diameter of the Graafian follicle did not change. The number of blood vessels in the ovaries was increased, but their diameter did not change significantly. In experimental groups, the diameter of the uterine cavity was significantly reduced. The thickness of the perimetrium of uterine layer was also reduced. The number of uterine glands endometrium decreased in the third experimental group, but their diameter did not significantly change in any of the groups. Nano-selenium caused an increase in the number of primordial, primary and secondary follicles due to its antioxidant effect; and the uterine layer of the endometrium increased and perimetrium and myometrium decreased. Manuscript profile
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