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 Kondo, T.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Kondo, T.
Agricola
Right arrow Articles by Kondo, T.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Plant and Cell Physiology, 1982, Vol. 23, No. 5 909-915
© 1982

Article

Correlation between Potassium Uptake Rhythm and Nitrate Uptake Rhythm in Lemna gibba G3

Takao Kondo

National Institute for Basic Biology Okazaki 444, Japan

The potassium and nitrate uptake rhythms in Lemna gibba G3 were compared under various light and medium conditions. Under light intensities ranging from 500 to 4,200 lux, the amplitudes of both rhythms were nearly the same, although the nitrate uptake activity contained a considerable arrhythmic component. The nitrate uptake rhythm was not affected by lowering of potassium concentration or substituting potassium with other cations. The potassium uptake rhythm persisted in the absence of nitrate with a reduced amplitude and an advanced phase. Duckweeds cultured on molybdenum-free medium showed the potassium uptake rhythm but no nitrate uptake rhythm; those cultured on nitrate-free medium also showed a potassium uptake rhythm. These results suggest that the potassium and the nitrate uptakes in the duckweed are not linked together by a common ion permeating system in the cell membrane, but are separately controlled by the oscillator.

(Received December 28, 1981; Accepted May 19, 1982)
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.