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Content available remote The effect of cadmium on oxidative stress in Beta vulgaris
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EN
As a heavy metal, cadmium has strongly toxic effects on plants and can induce oxidative stress. It is absorbed by the roots and transported to the stems and leaves. The aim of the study was to evaluate the effect of various concentrations of cadmium on the metabolic activity of Beta vulgaris and assess the dependence of these processes on the content of metal in the plants. To demonstrate the effect of cadmium on metabolism, protein and photosynthetic pigment content, lipid peroxidation, and the activity of enzymes specific for oxidative stress in roots and shoots were measured. Seeds of B. vulgaris were treated with different concentrations of Cd supplied via a CdCl2 solution: 0 (control), 200, 300 and 400 mg/dm3. Results of the present study revealed increased GPOX activity as cadmium concentration rose, while SOD activity was stimulated by a low Cd concentration (200 mg/dm3) and reduced by high levels of Cd. Based on the present findings, it can be concluded that GPOX in B. vulgaris played a more important role in ROS scavenging than SOD did and was able to reduce the level of lipid peroxidation in plants. Cadmium, in the concentration range used, did not show any significant effect on protein or photosynthetic pigment content.
EN
The present study was carried out at Guneid Research Sugar Cane Center during the two seasons of 2014 and 2015.The objective was to investigate the effect of three irrigation intervals 7, 10 and 14 days and two planting methods manual and mechanical on sugar beet crop growth and yield. The parameters measured were germination ratio, root thickness, root number/ha, leaf weight, root crop yield, polarization, estimated recovery sugar and sugar beet production. A split plot design with four replications was used. Irrigation intervals significantly (P≤0.05) affected root crop yield, root thickness and sugar beet production. The maximum values of root crop yield (65.4 ton/ha) and root thickness (35.2 cm) were obtained under 10 days irrigation interval, while the maximum values of sugar beet production (10 ton/ha) was obtained under 7 days interval. Methods of planting significantly (P≤0.05) affected root crop yield, root thickness, root number/ha, germination ratio, polarization, estimated recovery sugar and sugar beet production. The maximum values of root crop yield (65.2 ton/ha), root number/ha (67375 roots/ha), germination ratio (79.8%) and sugar beet production (9.7 ton/ha) were recorded for the manual planting method, while the maximum values of root thickness (35.6 cm), polarization (18.4%) and estimated recovery sugar (15.8%) were recorded for the mechanical planting method. The combined of irrigation intervals and sowing methods (irrigation intervals 7 days with manual planting methods and irrigation intervals 10 days with mechanical planting methods) resulted in hiegh polarization (18.5, 18.5 %), estimated recovery sugar (16, 16 %) and sugar beet production (10.7, 9.7 ton/ha), respectively, compared to other treatments. Irrigation intervals 10 days with mechanical planting method can be recommended to prevent loss of sugar content in sugar beet roots.
PL
W pracy zawarto zagadnienia związane z analizą obecnego wpływu składowiska odpadów Żelazny Most na zawartość metali ciężkich w burakach ćwikłowych uprawianych w ogródkach przydomowych położonych we wsiach Tarnówek i Komorniki. Z przeprowadzanych analiz zawartości Cu, Zn, Pb, Cd wynika, że spożywanie części nadziemnych i podziemnych buraków ćwikłowych może negatywnie wpływać na stan zdrowia mieszkających tam ludzi.
EN
The work included issues related to the analysis of the current impact of the tailings pond Żelazny Most on the content of heavy metals in red beets grown in home gardens located in the villages of Tarnówek and Komorniki. Analyzes of the contents of Cu, Zn, Pb, Cd show that consumption of the above- and underground parts of rot beet may adversely affect the health of people living there.
EN
n this work, morphology of Beta vulgaris L. cells permeabilized with 0.7 mM of Triton X-100® was evaluated using digital image processing and concepts of fractal dimension (perimeter- area relations). Important morphometric changes were found when the contact-time with chemical agent was increased.The size of cells decreased, the cells lost the roundness and their shape was more sinuous; this behaviour was a result of a probable shrinkage caused by the excess of exposure with the permeabili- zation agent. Morphology of B. vulgaris cells after permeabili- zation, exhibited a fractal nature since the slope of the ratio of the logarithm of the perimeter vs logarithm of the area was higher than unit. Fractal geometry of the cell morphology was affected as a re- sult of the exposure to Triton X-100®. Those changes can be attri- buted to the loss of turgor and structure of the cell wall.
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