نتایج جستجو برای: superoxide dismutase and proxidase activity but reduced chlorophyll a
تعداد نتایج: 20501710 فیلتر نتایج به سال:
Salinity is one of the major environmental constraints affecting agriculture in regions world. This study was conducted to evaluate effect exogenous nitric oxide (NO) treatments on two chickpea cultivars (Cagatay and Inci) under salt stress conditions. Different NO doses (0. 75 100 μM sodium nitroprusside (SNP)) as an source were applied plants grown saline (presence 50 mM NaCl) nonsaline In th...
To find out the biochemical and physiological responses of purple coneflower (Echinacea purpurea L.) medicinal plant to low temperature stress, a compeletly randomized design with three replications was conducted at Sari Agricultural Sciences and Natural Resources University in 2013. Five months old of coneflower seedlings exposure to three temperature levels of 23 ºC (control), 4 and 4 ºC for...
Reactive oxygen species enhance or impair autoregulation. Because superoxide is a vasoconstrictor, we tested the hypothesis that stretch generates superoxide that mediates myogenic responses. Increasing perfusion pressure of mouse isolated perfused renal afferent arterioles from 40 to 80 mm Hg reduced their diameter by 13.3±1.8% (P<0.001) and increased reactive oxygen species (ethidium: dihydro...
Understanding the characteristics of carbon ion beam irradiation-induced mutation is essential to its potential application in plant breeding. A beam-mutagenized soybean population was generated from newly released variety Dongsheng 28, with irradiation dosages 100 Gy, 120 Gy and 140 Gy. Many phenotypic variations novel mutants heritable tendencies including height mutants, sterile early mature...
background: the mechanism of cadmium induced osteoporosis is not well understood, so in this study, we examined the toxicity of bone marrow mesenchymal stem cell (mscs) following treatment of rats with cdcl2 in drinking water, to revile the effect of this chemical on differentiation potential of mscs. methods: at the end of third passage, mscs were grown in the osteogenic medium for 21 days. to...
The activity of superoxide dismutase was investigated in needles of spruce trees. To obtain maximum activity, needles were homogenized in the presence of Triton X-100 and polyvinylpyrrolidone. Superoxide dismutase activity was measured in dialyzed extracts with a modified epinephrine assay (HP Misra, I Fridovich [1972] J Biol Chem 247: 3170-3175) at pH 10.2. The extracts contained 70 to 120 uni...
Increasing the tolerance of plants to biotic and abioticts stresses is a important and debatable subject. Selenium can play a role in mitigating the effects of stress. For this purpose, a factorial experiment was conducted in a completely randomized design with two treatments, cadmium chloride including two levels (0 and 10 mg /kg) in soil and sodium selenate involved three levels (0, 500 and 1...
This study investigated the interaction of NaCl-salinity and elevated atmospheric CO(2) concentration on gas exchange, leaf pigment composition, and leaf ultrastructure of the potential cash crop halophyte Aster tripolium. The plants were irrigated with five different salinity levels (0, 25, 50, 75, 100% seawater salinity) under ambient and elevated (520 ppm) CO(2). Under saline conditions (amb...
Reactive oxygen species enhance or impair autoregulation. Because superoxide is a vasoconstrictor, we tested the hypothesis that stretch generates superoxide that mediates myogenic responses. Increasing perfusion pressure of mouse isolated perfused renal afferent arterioles from 40 to 80 mm Hg reduced their diameter by 13.3 1.8% (P 0.001) and increased reactive oxygen species (ethidium: dihydro...
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