![]() |
Journal of Environmental BiologypISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP |
Google Search the Journal web-site: |
Abstract - Issue Jul 2010, 31 (4) BackBiochemical responses
and accumulation of cadmium
in Spirodela polyrhiza N.M. Rolli*2, S.S. Suvarnakhandi2,
G.S. Mulgund1, R.H. Ratageri3
and T.C. Taranath1 1Environmental Biology
Laboratory, Department of Botany, 2Bldea’s
Comm, BHS Arts and 3Department
of Botany, (Received: Abstract: The present study focused on
biochemical responses of Spirodela polyrhiza to cadmium stresses and its accumulation. The
laboratory experiments were conducted for the assessment of biochemical
responses and accumulation of cadmium in plants at its various concentrations (0.1, 0.5, 1.5 and 2.0 ppm) at the regular interval for twelve days exposure. Spirodela showed visible symptoms like withering of roots
and chlorosis at higher concentration (2.0 ppm), however the plant showed normal growth at lower
concentration (0.1 ppm). The estimation of
biochemical parameters
(total chlorophyll, protein and carbohydrate) of test plants
showed a significant increase at lower concentration (0.1 ppm)
of cadmium. The biochemical changes decrease with increase in exposure
concentration and duration. The toxic effect of cadmium is directly
proportional to its concentration and duration. The accumulation of cadmium by Spirodela
polyrhiza was maximum at four days exposure duration
and gradually decreases. Key words: Cadmium, Accumulation, Toxicity, Biochemical
parameters PDF of full length paper
is available online Copyright
© 2010 Triveni Enterprises. All rights reserved. No part of the Journal can be
reproduced in any form without prior permission. Responsibility regarding
the authenticity of the data, and the acceptability of the conclusions enforced
or derived, rest completely with the author(s). |