Effect of cadmium on lipid composition of pepper

被引:38
作者
Jemal, F [1 ]
Zarrouk, M
Ghorbal, MH
机构
[1] Fac Sci, Lab Physiol Vegetale, Dept Sci Biol, Tunis 1060, Tunisia
[2] INRST, Lab Adaptat & Ameliorat Plantes, Hammam Lif 2050, Tunisia
关键词
Capsicum annuum; fatty acid; glycerolipid; stress;
D O I
10.1042/BST0280907
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Seedlings (2 weeks old) of pepper (Capsicum annum) were grown in nutrient solution with added CdCl2 (10 or 50 muM) for 7 days. In Cd-treated plants, changes in acyl lipids and fatty acid composition were investigated. Cd particularly lowered the amount of monogalactosyldiacylglycerol(MGDG) and enhanced accumulation of phospholipids [phosphatidylcholine (PC), phosphatidylethanolamine and phosphatidylglycerol] in leaves. In contrast, content of PC and galactolipids (MGDG and digalactosyldiacylglycerol) decreased in roots. Fatty acid composition of leaves was also changed by Cd addition to external medium, but no important changes occurred in roots. Levels of leaf polyunsaturated fatty acids, especially 18:3 and 16:3, were reduced. Lipid and fatty acid composition changes in roots are discussed in relation to Cd tolerance in pepper.
引用
收藏
页码:907 / 910
页数:4
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