Identification of a NaCl-induced ascorbate oxidase activity in Chaetomorpha linum suggests a novel mechanism of adaptation to increased salinity

被引：12

作者：

Caputo, Emanuela ^{[1
]}

Ceglie, Valentina ^{[1
]}

Lippolis, Michela ^{[1
]}

La Rocca, Nicoletta ^{[2
]}

De Tullio, Mario C. ^{[1
]}

机构：

[1] Univ Bari, Dipartimento Biol & Patol Vegetale, I-70125 Bari, Italy

[2] Univ Padua, Dipartimento Biol, I-35121 Padua, Italy

来源：

ENVIRONMENTAL AND EXPERIMENTAL BOTANY | 2010年 / 69卷 / 01期

关键词：

Chaetomorpha linum; Ascorbate oxidase; Salt adaptation; Muticopper oxidases; ACID OXIDASE; ANTIOXIDANT RESPONSES; OXIDATIVE STRESS; QUIESCENT CENTER; GENE-EXPRESSION; ULVA-FASCIATA; TOBACCO; OXYGEN; MACROALGA; DEFENSE;

D O I：

10.1016/j.envexpbot.2010.02.008

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

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 (C) 2010 Elsevier B V All rights reserved.

引用

页码：63 / 67

页数：5