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 Hara, M.
Right arrow Articles by Tamari, K.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Hara, M.
Right arrow Articles by Tamari, K.
Agricola
Right arrow Articles by Hara, M.
Right arrow Articles by Tamari, K.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Plant and Cell Physiology, 1973, Vol. 14, No. 1 11-28
© 1973

Article

Inhibition of the biosynthesis of plant cell wall materials, especially cellulose biosynthesis, by coumarin

Masaki Hara1, Noriharu Umetsu, Chikara Miyamoto2 and Kinjiro Tamari

Department of Agricultural Chemistry, Faculty of Agriculture, Tohoku University Sendai, Japan

Coumarin in a concentration range from of 10–100 ppm inhibited the growth of rice, mung bean, lettuce and clover seedlings. These growth inhibitions were accompanied by remarkable tissue swelling in the stem-base and root tip zones. Microscopic observation of the swollen tissue showed that there was no increase in cell number, but swelling of individual cells was observed. In a concentration range of 25–100 ppm, coumarin increased the fresh weight of plumular hook sections of mung bean, but decreased the dry weight. This phenomenon indicates that abnormal water-imbibition by cells occurs as an effect of coumarin. In addition, 25 ppm of coumarin noticeably induced wilting in the newly developing leaves of rice plants. With plumular hook sections of mung bean, 100 ppm of coumarin did not affect the incorporation of 14C-glucose into the cytoplasm, but did inhibit its incorporation into the cell wall by about 30%. Of the inhibition ratios for 14C-glucose incorporation into the cell wall fraction, that into cellulose was conspicuous at about 70%, while ratios into other cell wall fractions were less than 10%. It has also been demonstrated that the inhibition of 14C-glucose incorporation into cellulose by coumarin is due to the inhibition of its biosynthesis and not to a stimulation of its breakdown. The relation of the inhibition of cellulose biosynthesis by coumarin to the induction of cell swelling is discussed, illustrating coumarin's effect on isolated root cells of soybean.

1Present address: International Rice Research Institute, P. O. Box 1300, M. C. C, Makati, Philippines.

2Present address: Nippon Roche Research Center, Kamakura, Japan.

(Received July 12, 1972; )
Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 Plant Cell PhysiolHome page
A. Yoneda, T. Higaki, N. Kutsuna, Y. Kondo, H. Osada, S. Hasezawa, and M. Matsui
Chemical Genetic Screening Identifies a Novel Inhibitor of Parallel Alignment of Cortical Microtubules and Cellulose Microfibrils
Plant Cell Physiol., October 1, 2007; 48(10): 1393 - 1403.
[Abstract] [Full Text] [PDF]

Home page
 Proc. Natl. Acad. Sci. USAHome page
S. DeBolt, R. Gutierrez, D. W. Ehrhardt, C. V. Melo, L. Ross, S. R. Cutler, C. Somerville, and D. Bonetta
Morlin, an inhibitor of cortical microtubule dynamics and cellulose synthase movement
PNAS, April 3, 2007; 104(14): 5854 - 5859.
[Abstract] [Full Text] [PDF]


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.