Plant and Cell Physiology, 2004, Vol. 45, No. 3 351-356
© 2004 Oxford University Press
Short Communication |
An Aluminum Influence on Root Circumnutation in Dark Revealed by a New Super-HARP (High-gain Avalanche Rushing Amorphous Photoconductor) Camera
1 Graduate School of Agricultural and Life Sciences, the University of Tokyo, 1-1-1, Yayoi, Bunkyo-ku, Tokyo, 113-8657 Japan
2 Fukushima Prefecture Agricultural Experiment Station, 20 Wakamiyamae, Koriyama City, 963-8041 Japan
3 Japan Broadcasting Corporation, 1-10-11, Kinuta, Setagaya-ku, Tokyo, 157-8510 Japan
Abstract
The circumnutation of a rice root under dark conditions was observed using a highly sensitive camera, a new super-HARP camera. A rice root showed regular rhythmic movement with fixed angle. When treated with Al (5 µM AlCl3), the rotation angle of the root tip was drastically decreased and then the movement was resumed again, whereas the root elongation rate was constant. With the increase of Al concentration, the cycle-fading period became shorter. This is the first report to show that an Al treatment ceased the rotation movement of the root but not elongation.
Footnotes
4 Corresponding author: E-mail: aa26066{at}mail.ecc.u-tokyo.ac.jp; Fax, +81-3-5841-8193.
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