Changes in growth and antioxidant enzymes activities during cadmium stress in the mangrove plant Kandelia candel (L.) Druce.
Journal Title: Advances in Environmental Sciences - International Journal of the Bioflux Society - Year 2010, Vol 2, Issue 1
Abstract
Changes in growth and antioxidant enzymes activities during cadmium (Cd) stress in Kandelia candel (L.) Druce seedlings were investigated. The eedlings were grown in green house condition for three months in nutrient solution with 0, 1, 5, 10, 15, 20, 25 ppm CdCl2. Growth parameters, guaiacol peroxidase (POD), superoxide dismutase (SOD) and catalase (CAT), activities were analyzed in leaves and roots collected after three month exposure. This study demonstrates that under high concentration of Cd stress, the total iomass, the average seedlings stem height and leaf number of the K. candel decreased by 41.57%, 30.54% and 42.68%, respectively compare to control (CK). The activity of antioxidant enzymes POD, SOD and CAT in leaves were significant increase, this was noticed especially at the lower concentration. In root, this effect was more evident and they responded to low Cd stimulation more rapidly. However at the highest concentration of Cd exposure, the activity of POD, SOD and CAT were decreased both in leaf and root. The reductions in the activities of antioxidative enzymes in K. candel at the high concentration of Cd treatments indicate that Cd tolerance characteristics of this plant cannot be attributed to antioxidative defense. This result indicated that the higher concentration of Cd might affect the antioxidant enzyme system of K. candel. That may be inhibited the plant growth and biomass.
Authors and Affiliations
Mohammed Rahman, Md. Rahman, Yan Chongling, Kazi Islam
Keywords
Related Articles
- EP ID EP84853
- DOI -
- Views 146
- Downloads 0
The influence of competition and dimensional-spatial characteristics of trees on their radial growth in Old-Growth Slătioara forest, Romania.
The paper tries to identify how the radial growths of trees from old-growth forests are influenced by some forest structural elements, but also how the radial growths depend on the biometric characteristics of trees. The...
Preliminary indications of blood lead concentrations, among occupationally exposed and non exposed Palestinians
Despite the lower rate of exposure to leaded compounds in the past ten years, due to reduced lead petrol concentrations in the ambient air and improvement in environmental control measures, lead poisoning is still a...
Carbon stock assessment of three selected agroforestry systems in Bukidnon, Philippines
Climate change, caused by global warming, is a phenomenon partly resulting from abundance of carbon dioxide in the atmosphere. It is the most pressing environmental problem of the world today. It persists, and it cannot...
Environmental assessment of pollution with detergents in the Prut River Basin, Romania
This study focuses onto the assessment of the impacts and associated risks posed onto natural water bodies by detergent-containing wastewaters in the Prut river basin in North-Eastern Romania. The focus of this assessmen...
Assessment of the response of Goniopsis pelii (Decapoda, Graspidae) to crude oil in static bioassay
The assessment of acute toxicity of Nigeria Bonny light crude oil against purple mangrove crab, Goniopsis pelii of a tidal creek, Oron, Akwa Ibom State, Nigeria was conducted in the University of Uyo, Uyo, Nigeria Fisher...