The filamentous chlorophyte Chaetomorpha linum (Muller) Kutzing can stand wide changes in salinity occuring in brackish and estuarine waters In an attempt to characterize C linum adaptation, a NaCl-inducecl ascorbate oxidase (AAO) activity was identified and partially characterized Immunogold-transmission electron microscopy analysis showed AAO labelling in the cytosol, walls and chloroplasts of C linum cells, whereas in angiosperms this enzyme is almost exclusively confined to the extracellular matrix The possible function of AAO in adaptation and functional evolution of its cellular location is discussed.
Identification of a NaCl-induced ascorbate oxidase activity in Chaetomorpha linum suggests a novel mechanism of adaptation to increased salinity
DE TULLIO, Mario
2010-01-01
Abstract
The filamentous chlorophyte Chaetomorpha linum (Muller) Kutzing can stand wide changes in salinity occuring in brackish and estuarine waters In an attempt to characterize C linum adaptation, a NaCl-inducecl ascorbate oxidase (AAO) activity was identified and partially characterized Immunogold-transmission electron microscopy analysis showed AAO labelling in the cytosol, walls and chloroplasts of C linum cells, whereas in angiosperms this enzyme is almost exclusively confined to the extracellular matrix The possible function of AAO in adaptation and functional evolution of its cellular location is discussed.File in questo prodotto:
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