Abstract
Fatty acid content and composition of chloroplast membranes, ethylene production associated with thylakoid lipids degradation as well as photosynthetic electron transport involving photosystems 1 and 2 were used to determine the effects of increasing Cd concentrations in the growth medium [0, 14, 28, and 42 mg (Cd) kg−1(sand)] on the photosynthetic performance of barley plants (H. vulgare L., cv. CE9704). High concentrations of Cd triggered serious disturbances of the chloroplast membranes. Ethylene production increased whereas a drop of 18:3 fatty acid content occurred, indicating that Cd mediates lipid peroxidation in the thylakoids. The enhanced ethylene production could be used as an early indicator of Cd-induced membrane degradation, yet at very high concentration (42 mg kg−1) Cd decreased ethylene production.
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Vassilev, A., Lidon, F., Scotti, P. et al. Cadmium-Induced Changes in Chloroplast Lipids and Photosystem Activities in Barley Plants. Biologia Plantarum 48, 153–156 (2004). https://doi.org/10.1023/B:BIOP.0000024295.27419.89
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DOI: https://doi.org/10.1023/B:BIOP.0000024295.27419.89