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 Bialczyk, J.
Right arrow Articles by Lechowski, Z.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Bialczyk, J.
Right arrow Articles by Lechowski, Z.
Agricola
Right arrow Articles by Bialczyk, J.
Right arrow Articles by Lechowski, Z.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Plant and Cell Physiology, 1986, Vol. 27, No. 6 981-987
© 1986

Article

Diurnal Changes in the Malic Acid Concentration in Phaseolus coccineus L. Pulvini

Jan Bialczyk and Zbigniew Lechowski

Department of Plant Physiology, Jagiellonian University Al. Mickiewicza 3, 31-120 Krakow, Poland

Concentration of malic acid was determined in pulvini and petioles and in isolated parts of the pulvinus, i.e. extensor and flexor regions, in Phaseolus coccineus. In the light period of the circadian cycle, the concentration of malic acid in whole pulvini reached the highest value of 35.1 mmole CW while in the dark phase the respective value was 21.0 mmole CW. In the petiole, the highest concentration of malic acid was only 15.3% of the maximum concentration in the whole pulvinus.

In isolated regions of motor cells, a cyclic alternation in the concentration of malic acid was observed. In the light phase, the maximum acid concentration of 43.7 mmole CW in the extensor zone corresponds with the lowest concentration of 15.5 mmole CW in the flexor region. The lowest value of acid concentration of 30.8 mmole CW in the extensor part corresponds with the highest acid concentration of 31.1 mmole CW in the flexor part in the dark phase.

About 22% of the total concentration of malic acid was transported between the two opposite parts of the pulvinus as depending upon the phases of leaf movement.

(Received February 28, 1986; Accepted May 23, 1986)
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.