Journal of Stress Physiology & Biochemistry, Vol. 6 No. 1
2010, pp. 4-12 ISSN 1997-0838
Original Text Copyright (cc) 2010 by Ratheesh Chandra, Abdussalam, Nabeesa
Salim and Puthur
ORIGINAL
ARTICLE
Data source : Google Scholar
QueryDate : 2016-12-24
Cites : 13
Distribution of Bio-accumulated Cd and Cr in two Vigna species and the Associated
Histological Variations
Ratheesh Chandra, P., Abdussalam A.K., Nabeesa Salim and Jos T. Puthur*
Division of Plant Physiology and
Biochemistry, Department of Botany, University of Calicut, Kerala, PIN
– 673635. India. Phone: 0494-2401144*406,407, Fax: 0494-2400269 *Email: jtputhur@yahoo.com
Received December 16, 2009
In nutrient culture experiments, bioaccumulation and
anatomical effects of cadmium (CdCl2 - 20μM) and chromium (K2Cr2O7
- 600 μM) on the structure of root and stem was studied by
histochemical and analytical methods in Vigna radiata and Vigna unguiculata.
Each metal exerted specific influences on the anatomy of various
tissues in root and stem. Histochemical localisation of cadmium and
chromium was observed in the stained sections of root and stem. Atomic
Absorption Spectrophotometric study revealed maximum accumulation of
cadmium and chromium in the root tissue as compared to shoot with
significant variation among the species. Abundant occurrences of
densely stained deposits of chromium were seen in the root stelar
region of V. unguiculata and
to a lesser extend in V. radiata.
Cadmium accumulation in V. radiata
was comparatively more than that of V.
unguiculata.
The findings also revealed that the accumulation pattern of cadmium and
chromium varies between species and hence is species specific.
