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《Shandong Agricultural Sciences》 2009-03
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Alleviation of Cadmium Toxicity to Solanum nigrum L. by Sulfur

CAI Li-juan1,2,FAN Zhong-xue2,LUAN Wen-zhe2,DU Rui-xue2(1.College of Life Science,Qingdao Agricultural University,Qingdao 266109,China;2.High-tech Research Center,Shandong Academy of Agricultural Sciences/ Key Laboratory for Genetic Improvement of Crop,Animal and Poultry of Shandong Province,Jinan 250100,China)  
By water culture experiments with different concentrations of cadmium and sulfur,the biomass and cadmium content of Solanum nigrum L.were determined besides the non-protein thiol content and the subcellular distribution in different of organs.The results were as follows: ⑴ the biomass of Solanum nigrum L.could be raised by appropriate amount of sulfur under the same concentration of Cd stress;⑵ with the increasing of the cadmium concentration,the cadmium content decreased in shoots but increased in roots.Under the treatments with the same cadmium concentration,as the sulfur concentration increased,the cadmium content in both shoots and roots showed a certain trend of decrease;⑶ there was no significant difference of the non-protein thiol content among the different treatments;⑷ the cadmium mainly accumulated in cell wall but not in cell organelles.From all these results,one conclusion could be speculated that sulfur could alleviate the cadmium poisoning symptoms of Solanum nigrum L.by stopping the absorption of cadmium,but not by forming Cd-S4-complex.
【Fund】: 山东省优秀中青年科学家科研奖励基金(2007BS06014);; 山东省农业科学院博士基金(2006YBS024)
【CateGory Index】: X173
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