Title
Dehydroascorbate and glutathione regulate the cellular development of **Nicotiana tabacum** L. SR-1 protoplasts Dehydroascorbate and glutathione regulate the cellular development of **Nicotiana tabacum** L. SR-1 protoplasts
Author
Faculty/Department
Faculty of Sciences. Biology
Faculty of Sciences. Bioscience Engineering
Publication type
article
Publication
Gaithersburg, Md ,
Subject
Biology
Source (journal)
In vitro : cellular and developmental biology : plant / Tissue Culture Association [Rockville, Md] - Gaithersburg, Md, 1991, currens
Volume/pages
46(2010) :3 , p. 289-297
ISSN
1054-5476
1475-2689
ISI
000278179600009
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
A Nicotiana tabacum L. SR-1 leaf protoplast system was used to study the effects of dehydroascorbate and glutathione on cellular development. We found that dehydroascorbate is readily taken up by protoplasts and internally reduced to ascorbate. Concomitantly, cell division was inhibited and cell expansion stimulated. In this respect, dehydroascorbate counteracted auxin-mediated leaf protoplast development. In contrast to the effects of dehydroascorbate, glutathione-induced cell dedifferentiation, and this effect is similar to that mediated by high auxin concentrations. We conclude that dehydroascorbate and glutathione affect the auxin-mediated regulation of cellular development. Therefore, the biological role of these compounds extends beyond stress tolerance and defense.
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