Osaka City University Graduate School of Science
University of Toyama Faculty of Science
Tohoku University Graduate School of Life Sciences
Japan Aerospace Exploration Agency
Osaka Prefecture University Graduate School of Life and Environmental Sciences
Tokyo Gakugei University Faculty of Education
Institute of Physical and Chemical Research RIKEN Plant Science Center
Nara Institute of Science and Technology Graduate School of Biological Sciences
University of Hyogo Graduate School of Life Science
Nagoya City University Graduate School of Natural Sciences
出版者
宇宙航空研究開発機構宇宙科学研究本部
出版者（英）
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
雑誌名
宇宙利用シンポジウム 第23回 平成18年度
雑誌名(英)
Space Utilization Research: Proceedings of the Twenty-third Space Utilization Symposium
ページ
375 - 378
発行年
2007-03
抄録（英）
Resistance to the gravitational force is a principal graviresponse in plants, comparable to gravitropism. However, only limited information has been obtained for this graviresponse. To clarify the nature and mechanisms of gravity resistance, we have organized a working group, consisting 16 members. Here, we report the activity of this working group in the current year, and propose the strategies for space experiments to understand gravity resistance in plants. By hypergravity experiments using different plant materials, we have found that not only seedlings, but also calli and cultured cells show gravity resistance response. We have also studied the details of the processes of gravity resistance; signal perception, transformation and transduction of a perceived signal, and response. We need to clarify the nature and the details of gravity resistance by future space experiments. For this purpose, we should establish the procedure of on-site analyses on orbit with new instruments and suitable plant materials such as mutants.
植物の抗重力反応解明
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