Saida Sayar Hammami
Laboratoire de Bio-Physiologie Cellulaires, Departement des Sciences de la Vie,
Facult6 des Sciences de Bizerte, 7021 Zarzouna, Tunisie
Radhouane Chaffai
Laboratoire de Bio-Physiologie Cellulaires, Departement des Sciences de la Vie,
Facult6 des Sciences de Bizerte, 7021 Zarzouna, Tunisie
Ezzedine El Ferjani
Laboratoire de Bio-Physiologie Cellulaires, Departement des Sciences de la Vie,
Facult6 des Sciences de Bizerte, 7021 Zarzouna, Tunisie
ABSTRACT
The characteristics of photosynthetic metabolism, during treatment with cadmium, in two stories of sunflower seedlings were investigated. After 7 days of application of the metal, chlorosis and necrosis appeared especially in the first story. These stories approved a high decrease in the amount of Fe and Mg, this decrease was more important in the first story. Pigments were analyzed in the two stories and a significant decrease was recorded. However, no changes observed in the maximal efficiency of PSII photochemistry (Fv/Fm). Furthermore, the majority of carboxylation enzymes showed a decrease of their activity. Results of the present study suggested that the photosynthetic apparatus remained functional after Cd exposition and showed a tolerance for this metal despite effects on growth, mineral nutrition and enzymes activities.
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How to cite this article
Saida Sayar Hammami, Radhouane Chaffai and Ezzedine El Ferjani, 2004. Effect of Cadmium on Sunflower Growth, Leaf Pigment and Photosynthetic Enzymes. Pakistan Journal of Biological Sciences, 7: 1419-1426.
DOI: 10.3923/pjbs.2004.1419.1426
URL: https://scialert.net/abstract/?doi=pjbs.2004.1419.1426
DOI: 10.3923/pjbs.2004.1419.1426
URL: https://scialert.net/abstract/?doi=pjbs.2004.1419.1426
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