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

Plant and Cell Physiology, 1980, Vol. 21, No. 6 933-937
© 1980

Article

Osmotic potential of the epidermal cells of cucumber hypocotyls as affected by gibberellin and cotyledons

Masayuki Katsumi, Haruko Kazama and Noriko Kawamura1

Biology Department, International Christian University Osawa, Mitaka, Tokyo 181, Japan

By using light-grown cucumber (cv. Aonagajibae) seedlings with fully expanded cotyledons, the osmotic potential of the epidermal cells of the hypocotyl, as determined by the plasmolysis method was examined in relation to the effects of gibberellin (GA7) and cotyledons. GA7 at a dosage level of 0.05 µg/plant applied to the apical bud lowered the osmotic potential; the decrease was significant 5 hr after the GA7 treatment. Removal of the cotyledons, covering them with aluminum foil, or applying linuron, a DCMU analogue, to them caused an increase in the potential. In light-grown cucumber seedlings, the maintenance of a lower osmotic potential in the epidermal cells of the hypocotyl was concluded to be regulated by the photosynthetic activity of the cotyledon and also by gibberellin.

1Noriko Katsu, Kitano-Haitsu 203, Saginuma 1-9-10, Takatsu-ku, Kawasaki 218, Japan.

(Received May 30, 1980; )
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.