TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN
p) Space Life Science
Objectives, Outlines, and Preparation for the Resist Tubule Space Experiment to Understand the Mechanism of Gravity Resistance in Plants
Takayuki HOSONHaruhiko AKAMATSUKouichi SOGAKazuyuki WAKABAYASHIHirofumi HASHIMOTOMasamichi YAMASHITAKatsuya HASEGAWASachiko YANOKatsunori OMORINoriaki ISHIOKAShohei MATSUMOTOHaruo KASAHARAToru SHIMAZUShoji A. BABATakashi HASHIMOTO
Author information
JOURNALS RESTRICTED ACCESS

Volume 10 (2012) Issue ists28 Pages Tp_1-Tp_5

Details
Download PDF (1610K) Contact us
Abstract

Gravity resistance is a principal graviresponse in plants. In resistance to hypergravity, the gravity signal may be perceived by the mechanoreceptors located on the plasma membrane, and then transformed and transduced via the structural continuum or physiological continuity of cortical microtubules-plasma membrane-cell wall, leading to an increase in the cell wall rigidity as the final response. The Resist Tubule experiment, which will be conducted in the Kibo Module on the International Space Station, aims to confirm that this hypothesis is applicable to resistance to 1 G gravity. There are two major objectives in the Resist Tubule experiment. One is to quantify the contributions of cortical microtubules to gravity resistance using Arabidopsis tubulin mutants with different degrees of defects. Another objective is to analyze the modifications to dynamics of cortical microtubules and membrane rafts under microgravity conditions on-site by observing green fluorescent protein (GFP)-expressing Arabidopsis lines with the fluorescence microscope in the Kibo. We have selected suitable mutants, developed necessary hardware, and fixed operation procedure for the experiment.

Information related to the author
© 2012 The Japan Society for Aeronautical and Space Sciences
Previous article Next article
feedback
Top