Impact of cadmium accumulation on physiological characteristics of two cabbagevarieties during phytoremediation

Author: Safwan Shiyab
Received 11 December 2014, accepted 20 March 2015.
Abstract

Two cabbage (Brassica oleracea L.) varieties, green and red, were tested by applying phytoremediate soils contaminated with cadmium. Results of this study indicated that Cd at a higher concentration has a profound impact on physiology and internal structure of plants. Cadmium accumulation was greater in roots than shoots; this discovery indicates that Cd is not easily transferred into shoots from roots. Chlorophyll and relative water content (RWC) were significantly decreased with increasing Cd concentration. The enzyme activities of CAT, SOD, and APX increased in seedlings under higher Cd concentrations. On the other hand, H2O2 content decreased in cadmium-stressed plants compared to the control. At high concentrations Cd-15 mM, plants showed a reduction in the number of palisade and spongy parenchyma cells and in cell size of leaves. Green cabbage had a higher capacity to uptake and translocation of Cd from contaminated soils than red.

Journal: Food, Agriculture and Environment (JFAE)
Online ISSN: 1459-0263Year: 2015, Vol. 13, Issue 2, pages 262-268.Publisher: WFL.


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