DOIONLINE

DOIONLINE NO - IJASEAT-IRAJ-DOIONLINE-7218

Publish In
International Journal of Advances in Science, Engineering and Technology(IJASEAT)-IJASEAT
Journal Home
Volume Issue
Issue
Volume-5,Issue-1, Spl. Iss-2  ( Feb, 2017 )
Paper Title
The Effect of Some Heavy Metals Accumulation on Anatomical and Physiological Characteristic of the Submerged Macrophyte Vallisneria Plant
Author Name
Sahar A.A. Malik Al-Saadi, Karzan Omer Qader
Affilition
Department of Biology, College of Science, University of Basra, Iraq. Biology School, University of Sulymania, Iraq.
Pages
131-135
Abstract
The degree of contamination by heavy metals (Hg and Pb) on Vallisneria plants has been studied. Plant was exposed to metal treatments of Hg and Pb for three weeks. Leaves were harvested for studying anatomy and analyzing metal accumulation. Accumulation of Hg and Pb in all parts of the plant increased significantly with an increase in applied metal concentration. Results showed the maximum heavy metal concentrations, in the root and minimum heavy metal concentrations in the leaves. Total chlorophyll content increasing concentrations of the heavy metal. In Hg was 5.50%, while in the Pb found the lower effect on total protein research to 4.22 % at 15 mg/l concentration. Anatomical analyses of Vallisneria leaves revealed several changes in the leaves of plants submitted to contaminated treatments. The leaves of plants exposed to contamination presented modified anatomical characteristics. Exposure to heavy metals leads to a reduction in the size of blade thickness, number of conducting elements, reduced cell size of the epidermis and aerenchyma tissue. Leaves undergo changes in size, shape and arrangement of leaf blade and cortical parenchyma cells as well as reduced in vascular bundles. Keywords- Aquatic plants, Vallisneria, heavy metal, chlorophyll, anatomy.
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