Journal of Stress Physiology & Biochemistry, Vol. 6 No. 3
2010, pp. 56-63 ISSN 1997-0838
Original Text Copyright (cc) 2010 by Hussain. Sahadevan and Salim
ORIGINAL
ARTICLE
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QueryDate : 2016-12-24
Cites : 8
BIO-ACCUMULATION AND RELEASE OF MERCURY IN VIGNA MUNGO (L.) HEPPER SEEDLINGS
Hussain K.*, Sahadevan K.K. and Nabeesa Salim
*Asst. Prof. in Botany, Division of
Plant Physiology and Biochemistry, Unity Women’s College, Manjeri.
Malappuram. Kerala-676122, INDIA Phone: Mob: 9895501751
*Email- akkataria1@rediffmail.com
Received May 7, 2010
Effect of mercury on the seedling of Vigna mungo
seedlings was studied by culturing the seedlings in Hoagland medium
artificially contaminated with 5 and 10mM Mercuric Chloride.
Histochemical localization of the mercury in shoot and root tissues was
done by staining with dithizone and quantitative analyses of mercury
content accumulated in root, stem and leaf tissues were done using
mercury analyser. Localization of mercury was observed as coloured
masses in the cells of root and stem. Stem tissues of seedlings showed
anatomical modification in the epidermal cells as trichomes. Patterns
of bioaccumulation of mercury was root> stem> leaves revealing
feeble translocation to the shoot system. A comparison of residual
mercury content retained in the growth medium after sample harvesting
and quantity accumulated in the plant body reveals that some quantity
of mercury is lost presumably through the trichomes developed on the
stem and/ or through stomata of the leaves.
