Journal of Stress Physiology &
Biochemistry, Vol. 9 No. 4
2013, pp. 5-24 ISSN 1997-0838
Original Text Copyright (cc) 2013 by Dowidar, Abo-Hamad,
Mohsen, Khalaf
ORIGINAL ARTICLE
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QueryDate : 2016-12-24
Cites : 0
Bioremediation of copper
stressed Trigonella foenum graecum
Samha M.A. Dowidar, Shaimaa A.
Abo-Hamad, Awatif A. Mohsen and Basma M.M. Khalaf
Botany
Department, Faculty of Science, Tanta University, Tanta, Egypt
Copper is one
of the heavy metals, although it
is an essential microelement through
interference with numerous physiological processes, when it absorbed in
excess amounts, it can be toxic and induce a number of deleterious
effects. A pot experiment was conducted in order to assess the possible
effects of Nostoc muscorum
(2 g/ kg soil fresh pellets) on the growth and some metabolic
activities of Trigonella
foenum gracum at 30 and 60 days of growth growing under
copper stress. This experimental plant was grown in clay-sandy soil
(2:1 W/W) amended either with different concentrations of CuSO4
(0.4, 0.6, 0.8 and 1.0 g/kg soil) or Nostoc
mixed with Cu (0.6, 0.8 and 1.0 g/kg soil). Application of Nostoc in a mixture with Cu
significantly increased fresh and dry weight of root and shoot,
photosynthetic pigments and ctivity at 30 and 60 days of growth when
compared with their counterparts of Cu treatment. In addition, the
content of K+, Ca2+, P3+
and iron were increased with the exception of a
decrease in Cu level at 60 days of growth. On the other hand, the
content of starch was significantly decreased at 30 and 60 days of
growth. Moreover, the activity of both peroxidase (POD) and superoxide
dismutase (SOD) were reduced by applying Nostoc to the soil
having different concentrations of Cu.
