Effects of copper pollution on the ultrastructure of Lessonia spp

Plants of Lessonia trabeculata and L. nigrescens were studied by transmission electron microscopy in order to evaluate ultrastructural level changes in response to copper exposure. Samples of fronds, stipes, and holdfasts were collected from areas with and without copper mining discharges. Changes i...

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Bibliographic Details
Published inHydrobiologia Vol. 398-399; pp. 375 - 383
Main Authors Leonardi, Patricia I., Vasquez, Julio A.
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Nature B.V 01.04.1999
Subjects
Algae
Chemical analysis
Copper
Flowers & plants
Plant tissues
Seawater
Water analysis
Argentina
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Summary:Plants of Lessonia trabeculata and L. nigrescens were studied by transmission electron microscopy in order to evaluate ultrastructural level changes in response to copper exposure. Samples of fronds, stipes, and holdfasts were collected from areas with and without copper mining discharges. Changes in cell ultrastructure observed in Lessonia trabeculata were related to copper concentrations in seawater, seaweeds and extracted alginates. The results strongly suggest that tolerance or adaptation of Lessonia to high concentrations of copper is the capacity of different plant tissues to accumulate copper as precipitates, primarily at two levels: the cell wall and periplasmalemmal space, with the vacuolar system being a third site.[PUBLICATION ABSTRACT]
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ISSN:0018-8158
1573-5117
DOI:10.1023/A:1017067024996