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Showing 2 results for Catalase

Mehdi Chenarani, Akbar Safipour Afshar, Fatemeh Saied Nematpour,
Volume 1, Issue 1 (9-2015)
Abstract

Salinity is a major environmental stress that affects the crop yields and the pea plants are high sensitive to salt stress. Salinity through oxidative stress damage cell structures, and antioxidants by eliminating free radicals increase tolerance to these stresses. In this research, effects of salt stress and leaf spray with ascorbic acid on growth parameters, photosynthetic pigments, antioxidant enzyme activities and lipid peroxidation on chickpea (Cicer arietinum L.) were investigated. The experiment is conducted as a factorial in a completely random design with three replications in greenhouse conditions. Salt stress has been applied by 0, 50, 100 mM NaCl solution and foliar were treatment by ascorbic acid solution 0, 3 and 6 mM in 3-5 leave stage. plants exposure to sodium chloride, were showed decrease in growth parameters and content of photosynthetic pigments in comparison with control plants, But the activity of catalase, superoxide dismutase enzymes and the content of proline and lipid peroxidation were increased. In plants exposed to sodium chloride and ascorbic acid, growth parameters, photosynthetic pigments were higher than plants only exposed to sodium chloride, although the lipid peroxidation and activity of catalase and superoxide dismutase enzymes and the content of proline were decreased. The results showed that spraying of ascorbic acid (as an antioxidant) is caused tolerance to salt stress and decreased of side effects of sodium chloride in Cicer arietinumm L.


Forough Yosefzaei, Latifeh Poorakbar, Khalil Farhadi,
Volume 1, Issue 2 (3-2016)
Abstract

Nanotechnology or using technology in the case of atoms and molecules is one of the most important techniques in present century, which will affect on future of world economy. This study was designed to examine the Nanoparticles synthesis and effects of silver nanoparticles (0, 0.5,1,5,10,25,40 ppm) on morphological and physiological indexes of basil(Ocimum basilicum L.). Measurement of root and shoots dry weight and lenght showed that increasing of Silver nanoparticles concentrations have an adverse effect on them. Also our results showed that by increasing silver nanoparticles concentration, the amount of soluble sugars increase. The activities of antioxidant enzymes, which play an important role in detoxification of reactive oxygen species in cells, were measured in leaf treated with Silver nanoparticles and the result showed increase in peroxidase Guaiacol and catalase amount and its reason can be found in the effect of different results of silver nanoparticles in different concentrations on morphologic and physiologic of basil plant.



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مجله فیزیولوژی و بیوشیمی گیاهی ایران Iranian Journal of Plant Physiology and Biochemistry
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