Skip Navigation

This Article
Right arrow Full Text (PDF)
Right arrow E-letters: Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when E-letters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Right arrow Disclaimer
Google Scholar
Right arrow Articles by FLOWERS, T. J.
Right arrow Search for Related Content
PubMed
Right arrow Articles by FLOWERS, T. J.
Agricola
Right arrow Articles by FLOWERS, T. J.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© 1974 Oxford University Press

RESEARCH-ARTICLE

Salt tolerance in Suaeda maritima (L.) Dum

A COMPARISON OF MITOCHONDRIA ISOLATED FROM GREEN TISSUES OF SUAEDA AND PISUM

T. J. FLOWERS

School of Biological Sciences, University of Sussex Falmer, Brighton, Sussex

Mitochondria were isolated from green leaves and stems of the glycophyte Pisum sativum and the halophyte Suaeda maritima. The preparations oxidized malate, succinate, and 2-oxoglutarate as well as externally added NADH. Acceptor control ratios were about 2.8 for mitochondria from Pisum and 1.8 for mitochondria from Suaeda oxidizing malate+pyruvate in 125 mM sodium chloride. The mitochondrial fraction was contaminated with chloroplast fragments which resulted in relatively low rates of oxygen uptake when these were expressed on a protein basis.

The addition of sodium chloride at concentrations greater than 200 mM considerably reduced the rates of oxygen uptake by both species in the presence and absence of phosphate acceptor (ADP). Acceptor control ratios were reduced and there was a marked decline in the ADP/O ratio. Sucrose at equivalent molar concentrations had a much less drastic effect on the mitochondria.

There was no significant difference in the effects of these two solutes on mitochondria from the two species and the similarity of response is discussed in relation to the cytoplasmic ion content of the halophyte.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.