TY  - BOOK
AU  - Zemanová,Veronika
AU  - Pavlík,Milan
AU  - Kyjaková,Pavlína
AU  - Pavlíková,Daniela
TI  - Fatty acid profiles of ecotypes of hyperaccumulator Noccaea caerulescens growing under cadmium stress
SN  - 0176-1617
AV  - QK711.2 JOU 
PY  - 2015///
CY  - Amsterdam
PB  - Elsevier GmbH
KW  - 9,12,15-Octadecatrienoic acid
KW  - 9,12-Octadecadienoic acid
KW  - Heavy metals stress
N2  - Changes in the fatty acid (FAs) composition in response to the extent of Cd contamination of soils (0, 30, 60 and 90 mg Cd kg−1) differed between ecotypes of Noccaea caerulescens originating from France – Ganges, Slovenia – Mežica and Austria – Redlschlag. Mežica ecotype accumulated more Cd in aboveground biomass compared to Ganges and Redlschlag ecotypes. Hyperaccumulators contained saturated fatty acids (SFAs) rarely occurring in plants, as are cerotic (26:0), montanic (28:0), melissic (30:0) acids, and unusual unsaturated fatty acids (USFAs), as are 16:2, 16:3, 20:2 and 20:3. Typical USFAs occurring in the family Brassicaceae, such as erucic, oleic and arachidonic acids, were missing in tested plants. Our results clearly indicate a relationship between Cd accumulation and the FAs composition. The content of SFAs decreased and the content of USFAs increased in aboveground biomass of Ganges and Mežica ecotypes with increasing Cd concentration. Opposite trend of FAs content was determined in Redlschlag ecotype. Linoleic (18:2n−6), α-linolenic (18:3n−3) and palmitic (16:0) acids were found in all ecotypes. The results observed in N. caerulescens ecotypes, showed that mainly Mežica ecotype has an efficient defense strategies which can be related on changes in FAs composition, mainly in VLCFAs synthesis. The most significant effect of ecotype on FAs composition was confirmed using multivariate analysis of variance
UR  - https://doi.org/10.1016/j.jplph.2015.02.012
ER  -