A comparative analysis of fatty acid composition of root and shoot lipids in Zea mays under copper and cadmium stress
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Archívum: MTA Könyvtár
Gyűjtemény: Status = Published

Type = Article
Cím:
A comparative analysis of fatty acid composition of root and shoot lipids in Zea mays under copper and cadmium stress
Létrehozó:
Chaffai, R.
Seybou, T.
Marzouk, B.
Ferjani, E.
Kiadó:
Akadémiai Kiadó
Dátum:
2009
info:eu-repo/date/embargoEnd/2029-03-31
Téma:
QH Natural history / természetrajz
Tartalmi leírás:
A comparative analysis of fatty acid composition was conducted in maize (
Zea mays
L.) under copper and cadmium stress. The unsaturation level (double-bond index) of phosphatidylethanolamine (PE) and digalactosyldiacylglycerol (DGDG) was increased in response to both metal treatments, whereas the phosphatidylinositol (PI), the phosphatidylcholine (PC) showed no significant changes. The Cu-treated roots showed a marked increase (about 2-fold) in the phospholipid (PL) content, while the Cd-treated roots showed a slight but insignificant increase. The steryl lipid SL/PL ratio was markedly decreased in response to Cu stress, and therefore, may indicate an activated phospholipid biosynthesis and turnover, in response to damage caused by Cu stress. The double bond indices of chloroplastic lipids: phosphatidylglycerol (PG), monogalactosyldiacylglycerol (MGDG), digalactosyldiacylglycerol (DGDG) and sulfoquinovosyldiacylglycerol (SQDG) revealed a similar but not identical pattern of change. The PG and MGDG contents in shoots were markedly decreased under Cu (by 53 and 48%) and Cd (by 78 and 65%) stress. The increase in the malondialdehyde (MDA) content in roots induced by both metals indicates lipid peroxidation. Generally, in the presence of Cu fatty acid composition was markedly modulated but to lesser extent under Cd stress. These results suggest that changes in the fatty acid composition under Cu and Cd stress conditions are metal-specific and may therefore result in differential metal tolerance.
Nyelv:
magyar
Típus:
Article
PeerReviewed
info:eu-repo/semantics/article
Formátum:
text
Azonosító:
Chaffai, R. and Seybou, T. and Marzouk, B. and Ferjani, E. (2009) A comparative analysis of fatty acid composition of root and shoot lipids in Zea mays under copper and cadmium stress. Acta Biologica Hungarica, 60 (1). pp. 109-125. ISSN 0236-5383
Kapcsolat:
https://doi.org/10.1556/ABiol.60.2009.1.10
Létrehozó:
info:eu-repo/semantics/embargoedAccess