Photosynthesis and growth responses of pea Pisum sativum L. under
heavy metals stress |
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Authors: | Sabrine Hatta Boutheina Dridi Lassad Choub Mohamed Ben Kheder and Hamadi Bousetta |
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Institution: | 1. Laboratory of Biochemistry and Environmental Toxicology,ISA Chott-Mariem,Sousse 4042,Tunisia 2. Laboratory of Marine Biology,National Institute of Sea Sciences and Technologies Lagoulette,Tunis 2060,Tunisia 3. Technical Centre of Organic Agriculture,Chott-Mariem,Sousse 4042,Tunisia |
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Abstract: | The present work aimed to study the physiological e ects of cadmium (Cd) and copper (Cu) in pea (Pisum sativum). Pea plants were
exposed to increasing doses of cadmium chloride (CdCl2) and copper chloride (CuCl2) for 20 d. The examined parameters, namely root
and shoot lengths, the concentration of photosynthetic pigments and the rate of photosynthesis were a ected by the treatments especially
with high metals concentrations. The analysis of heavy metals accumulation shows that leaves significantly accumulate cadmium for
all the tested concentrations. However, copper was significantly accumulated only with the highest tested dose. This may explain the
higher inhibitory e ects of cadmium on photosynthesis and growth in pea plants. These results are valuable for understanding the
biological consequences of heavy metals contamination particularly in soils devoted to organic agriculture. |
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Keywords: | Pisum sativum heavy metals photosynthesis growth |
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