Journal Article

Overexpression of γ-Glutamylcysteine Synthetase, but not of Glutathione Synthetase, Elevates Glutathione Allocation in the Phloem of Transgenic Poplar Trees

Cornelia Herschbach, Lise Jouanin and Heinz Rennenberg

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 39, issue 4, pages 447-451
Published in print April 1998 | ISSN: 0032-0781
Published online April 1998 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/oxfordjournals.pcp.a029389
Overexpression of γ-Glutamylcysteine Synthetase, but not of Glutathione Synthetase, Elevates Glutathione Allocation in the Phloem of Transgenic Poplar Trees

More Like This

Show all results sharing these subjects:

  • Biochemistry
  • Molecular and Cell Biology
  • Plant Sciences and Forestry

GO

Show Summary Details

Preview

Phloem exudates were collected along the tree axis at different heights of wild type and transgenic poplar. Over-expression of bacterial γ-glutamylcysteine synthetase (γ-ECS), but not of glutathione synthetase (GS5), significantly enhanced Cys, γ-EC and GSH in phloem exudates. Since growth of poplar is not affected by either γ-ECS or GSS overexpression, phloem transport of thiols seems to be controlled by the source rather than the sink strength.

Keywords: Cysteine; γ-Glutamylcysteine; Glutathione; Methionine; Phloem exudate; Transgenic Poplar (Populus tremula × p. alba)

Journal Article.  0 words. 

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

Full text: subscription required

How to subscribe Recommend to my Librarian

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.