Leaf biochemistry of Lycopersicon esculentum Mill. at different stages of plant development as affected by mercury treatment.
No Thumbnail Available
Date
2007-04-06
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
The effect of mercury (Hg) on the biochemical parameters of Lycopersicon esculentum Mill leaf was studied. Application of mercuric chloride in varying concentrations (0.5, 1.0, 1.5 and 2.0 mM HgCl2 kg(-1) sand) caused significant reduction that went up to 89% and 72% chlorophyll a and chlorophyll b contents respectively (at flowering stage), 69% in carotenoid content, 64% in total soluble protein content and 91% in nitrate reductase activity (all at post-flowering stage). The amounts of nitrate and proline increased maximally (151% and 143% respectively) at the flowering stage, whereas total soluble sugar enhanced by 57% at the post-flowering stage. Changes observed in most of the parameters, were concentration dependent. Such studies seem to be able to discover suitable bioindicators of heavy metal pollution.
Description
Keywords
Citation
Gauba N, Mahmooduzzafar , Siddiqi TO, Umar S, Iqbal M. Leaf biochemistry of Lycopersicon esculentum Mill. at different stages of plant development as affected by mercury treatment. Journal of Environmental Biology. 2007 Apr; 28(2): 303-6