Wheat is a widely cultivated cereal throughout the world and stress caused by low temperatures significantly affects all stages of wheat development. Seed priming an effective method to produce stress-resistant plants. This work was carried out determine whether different methods (hormo-, halo-, osmo-, hydropriming) can increase resistance low-temperature conditions (10 °C). The effect on growt...

Bryophytes are poikilohydric organisms that can be used as model plants to study desiccation tolerance mechanisms. The main objective of this was examine the activities antioxidant enzymes ascorbate peroxidase (APX), catalase (CAT) and guaiacol (POD) in rehydrated desiccated states Syntrichia ruralis (Hedw.) Web. & Mohr. from two slopes, one North-east (NE) South-west (SW) facing collected ...

Environmental pollution has been a serious problem since the start of the industrial revolution. The pollution usually comes from industrial wastes, waste water, heavy metal, etc. Heavy metals such as lead, mercury, tin are considered to be toxic to living organisms and enzyme activities. However, metal ions can play essential role in plants and animals as they are involved in fundamental proce...

To evaluate the physiological responses of chrysanthemum to silicon spray in non-stress conditions, this study was performed in two separate experiments (at 4 to 5 and 8 to 12-leaf stages) as a factorial randomized completely design with two factors: silicon source (in two levels: sodium silicate and calcium silicate) and the concentration of silicate at five levels (0, 50, 100, 150 and 200 mg ...

The present study aimed to investigate the effects of zinc exposure (0, 1, 5, 15, 30 mg/L zinc) on biochemical and physiological parameters Peganum harmala seedlings. Two populations (metallicolous non-metallicolous) were compared in Zn tolerance, accumulation, photosynthetic pigments, enzymatic antioxidant activities. Plants treated with at concentrations 0, for 14 days. results showed that in...

A novel, basic (isoelectric point > 10), heme peroxidase isoenzyme (TP; relative molecular weight = 34,660 +/- 10, mean +/- SE) that can account for a significant part of the ascorbate peroxidase activity in tea (Camellia sinensis) leaves has been purified to homogeneity. The ultraviolet/visible absorption spectrum is typical of heme-containing plant peroxidases, with a Soret peak at 406 nm (ep...

A brief study to analyze oxidative stress and antioxidant response of cadmium stress was carried out. The plant chosen Vigna radiata (var. SML-668) was hydroponically grown in 0, 50μM, 100μM and 150μM, cadmium chloride. The roots were taken from hydroponic culture at 6 days of growth for various enzymatic and metabolic estimations. Among the antioxidant enzymes, root catalase and ascorbate pero...

abstract kinetic properties of root of peroxidase of gundelia tournefortii investigated at different ph, temperature and different inhibitors. maximum activity of peroxidase achieved at ph 5.5-6 in according to type of substrate. activity of peroxidase increased at constant concentration of h2o2 and different concentration of guaiacol, catechol and pyrogallol. the maximum activity in presence o...