Volume 10, Issue 4 (2-2011)                   2011, 10(4): 999-1010 | Back to browse issues page

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Rezaei M, Khavari-Nejad R, Najafi F. The effects of interaction between cadmium and iron on growth, gas exchanges and catalase activity in rice (Oryza sativa L. cv.fajr) plant. Quarterly Journal of Science Kharazmi University. 2011; 10 (4) :999-1010
URL: http://jsci.khu.ac.ir/article-1-1401-en.html
1- Karaj, square standard, zobahan street, in front of rahahan residential block, baharestan street, venus building, unity 1
2- Department of Biology, Faculty of Science, Tarbiat Moallem University, Tehran, IRAN
3- Department of Biology, Faculty of Science, Tarbiat Moallem University, Tehran, IRAN.
Abstract:   (5319 Views)
The effects of cadmium and iron interaction on some physiological parameters in rice (Oryza sativa L.cv.fajr) plant were studied. The four days old seedlings were transferred to pots containing sand, irrigated with Hoagland solution in growth chamber. The 15 days old plants were treated with 0, 50 and 100 &muM  CdCl2 supplemented with 5, 10 and 20 ppm Fe as Fe-EDTA. Plants were grown under controlled condition and harvested after 30 days for measurements of some biochemical and physiological parameters. Treatments were conducted with four replications. Under Cd stress, growth of plant decreased. In plants treated with CdCl2, relative growth rate, net assimilation rate and photosynthetic rate were decreased. Addition of Fe-EDTA (10 and 20 ppm) moderated cadmium effects. Under Cd stress without Fe, respiration rate and CO2  compenstation point increased, however, in solutions containing both CdCl2 and Fe-EDTA, respirations rate and CO2  compenstation point decreased. In plants treated with CdCl2, catalase activity increased. However, after increasing Fe in solution containing CdCl2, catalase activity decreased. Therefor, the results indicated that in CdCl2 treated plants with increasing Fe-EDTA, the toxic effects of Cd decreased.
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Type of Study: Research Paper |
Published: 2011/02/15

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