The aim of this study was to investigate the effects humic acid (HA) applications on rapeseed (Brassica napus L.) growth, heavy metal uptake, bioconcentration factor (BCF), translocation (TF), tolerance index (TI), catalase (CAT), ascorbate peroxidase (APX) enzyme activities and hydrogen peroxide (H2O2) content in polluted soil with lead (Pb), chromium (Cr), cadmium (Cd), zinc (Zn). Three doses...

Changes in the activities of four enzymes involved in antioxidative plant defence against low temperature treatment were studied in winter wheat plants (Triticum aestivum L cv. Sadovo 1) grown on acid soil (pH 4.2, KCl) under controlled environmental conditions. To investigate the effect of molybdenum (Mo) deficiency on antioxidative defence of these plants, Mo was added to part of the plants a...

The intensive global use of glyphosate has led to the evolution resistant (GR) weed species, including economically damaging horseweed (Conyza sumatrensis). We evaluated resistance mechanisms C. sumatrensis. While 5-enolpyruvylshikimate-3-phosphate synthase activity was similar between and nonresistant biotypes, plants from GR population accumulated lower shikimate levels than susceptible ones,...

Chlorella vulqaris is a unicellular microorganism that offers health benefits due to its concentrated antioxidant production. This microalga has received huge attention natural antioxidative property as an alternative source because of rapid growth, easy and flexible culture. Research date only focuses on the growth production in selected phase, especially exponential stationary phases; however...

fire blight, caused by the bacterium erwinia amylovora, is one of the most destructive diseases of plants in the rosaceae subfamily pomoideae. the objective of this study was to determine the level of resistance of 30 pear cultivars and describe the biochemical changes induced in some resistant and susceptible cultivars. the level of resistance was determined by the length of the fire blight le...

Salinization usually plays a primary role in soil degradation, which consequently reduces agricultural productivity. In this study, the effects of salinity on growth parameters, ion, chlorophyll, and proline content, photosynthesis, antioxidant enzyme activities, and lipid peroxidation of two cotton cultivars, [CCRI-79 (salt tolerant) and Simian 3 (salt sensitive)], were evaluated. Salinity was...

The effects of salicylic acid (SA) and cold on photosynthesis, activities of carboxylating enzymes ribulose-1,5bisphosphate carboxylase (RuBPC) and phosphoenolpyruvate carboxylase (PEPC) and activities of photorespiratory enzymes glycolate oxidase (GO) and catalase (CAT), and on the activies of antioxidant enzymes superoxide dismutase (SOD), ascorbate peroxidase (APX), glutathione reductase (GR...

Iron deficiency is one of the most important factors affecting growth and yield. Utilizing tissue culture technique to study the response of plant to Fe-stress was suggested as a rapid and simple method. Fe-deficiency was explored by cultivating shoots of Borage plantlets on MS media with 27.8, 13.0, 0.0 mg/L FeSO4. Results showed that, severe Fe-deficiency induced yellowing and typical iron de...

Alternative oxidase (AOX) has been documented to mitigate the oxidative stress caused by abiotic stresses. However, it remains unknown how AOX regulates antioxidant system and photosynthesis under waterlogging. To address this issue, we used two watermelon (Citrullus lanatus L.) cultivars (waterlogging tolerant cultivar ‘YL’ sensitive ‘Zaojia8424’) as materials inhibitor salicylhydroxamic acid ...