Skip Navigation

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
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
Google Scholar
Right arrow Articles by Fujita, Y.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Fujita, Y.
Agricola
Right arrow Articles by Fujita, Y.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Plant and Cell Physiology, 1978, Vol. 19, No. 7 1129-1136
© 1978

Article

Carotenoid photobleaching induced by photosystem II action in the membrane fragments of the blue-green alga Anabaena variabilis : Action of O2

Yoshihiko Fujita

Ocean Research Institute, University of Tokyo Nakano, Tokyo 164, Japan

Carotenoid photobleaching induced by photosystem II action was studied using membrane fragments of the blue-green alga Anabaena variabilis. Special attention was paid to the action of O2.

Carotenoid photobleaching elicited by carbonyl cyanide m-chlorophenylhydrazone (CCCP) depended on O2. However, the addition of H2O2, sodium silicotungstate or potassium ferricyanide (Ferri), an electron acceptor for reaction center II action, removed the O2-dependency. These results indicate that O2 acts as the electron acceptor for this reaction.

When both CGCP and Ferri were present, a short illumination (0.25 sec) caused a rapid photobleaching followed by a slow recovery in the subsequent dark period. The spectrum of the absorption decrease in the light was identical with that of the absorption increase in the subsequent dark, indicating that a reversible process is involved in the carotenoid photobleaching. The size in the dark recovery relative to the light bleaching became larger under anaerobic conditions and smaller under higher partial pressure of O2. The reuslts were interpreted as indicating that O2 does not function in the primary process including a reversible bleaching step, but is involved in the slow and irreversible bleaching process.

(Received April 3, 1978; )
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.