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Cell enlargement of plant tissue explants oscillates with a temperature-compensated period of ca. 24 minRate of plant cell enlargement, measured at intervals of 3 min using a sensitive linear transducer, oscillates with a minimum period of about 24 min that parallels the 24-min periodicity observed with the oxidation of NADH by the external plasma membrane NADH oxidase and of single cells measured previously by video-enhanced light microscopy. Also exhibiting 24-min oscillations is the steady-state rate of cell enlargement induced by the addition of the auxin herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) or the natural auxin indole-3-acetic acid (IAA). Immediately following 2,4-D addition, a very complex pattern of oscillations is frequently observed. However, after several hours a dominant 24-min period emerges. The length of the 24-min period is temperature compensated and remains constant at 24 min when measured at 15, 25 or 35 degrees C, despite the fact that the rate of cell enlargement approximately doubles for each 10 degree C rise over this same range of temperatures.
Document ID
Document Type
Reprint (Version printed in journal)
External Source(s)
Morre, D. James (Purdue University West Lafayette, IN 47907-1333, United States)
Ternes, Philipp
Morre, Dorothy M.
Date Acquired
August 21, 2013
Publication Date
January 1, 2002
Publication Information
Publication: In vitro cellular & developmental biology. Plant : journal of the Tissue Culture Association
Volume: 38
Issue: 1
ISSN: 1054-5476
Subject Category
Life Sciences (General)
Distribution Limits
Non-NASA Center
NASA Discipline Cell Biology