Alteration of cotyledonary globulins and albumins mobilization in pea exposed to cadmium

Scientific Research and Essays

Khadija Jaouani¹ 

关键词:  ;    Albumin;    amino acid;    cadmium;    germination;    globulin;     ;    Pisum sativum ;    L.;   

DOI  :  10.5897/SRE11.1809

学科分类：社会科学、人文和艺术（综合）

来源: Academic Journals

【 摘 要 】

Seed germination and post germination events are complex physiological processes which can be seriously affected by heavy metals. Cadmium (Cd) is an environmental pollutant extremely toxic to plants and other living organisms including humans. To assess Cd phytotoxicity, pea seeds (Pisum sativumL. var. douce province) were germinated in distilled water or 200 µM CdCl2. Cadmium treatment induces a deleterious inhibition in embryonic axis growth by limiting the biomass transfer from cotyledons, particularly the hydrolysis of the major storage proteins and, thereby, the amino acids freeing. The electrophoretic analysis of albumins and globulins showed that heavy metal alters the breakdown of 33 and 19 kDa polypeptides (alkaline legumin and small vicilin, respectively), as well as other peptides (17-19 kDa) which may be produced by a previous hydrolysis of albumins.

【 授权许可】

CC BY