@inproceedings{oai:jaxa.repo.nii.ac.jp:00013118, author = {藤井, 伸治 and 山川, あゆみ and 宮沢, 豊 and 高橋, 秀幸 and 山下, 雅道 and Fujii, Nobuharu and Yamakawa, Ayumi and Miyazawa, Yutaka and Takahashi, Hideyuki and Yamashita, Masamichi}, book = {宇宙利用シンポジウム: 第27回: 平成22年度, Space Utilization Research, Vol. 27 2011: Proceedings of The Twenty-seventh Space Utilization Symposium}, month = {Mar}, note = {第27回宇宙利用シンポジウム (2011年1月24日-25日, 宇宙航空研究開発機構宇宙科学研究所相模原キャンパス), 相模原市, 神奈川県, The Twenty-seventh Space Utilization Symposium (January 24-25, 2011. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)), Sagamihara, Kanagawa Japan, It has been suggested that Arabidopsis has at least 2 gravity-sensing pathways: one is amyloplasts sedimentation pathway and another is ARG1 (ALTERED RESPONSE TO GRAVITY1) pathway. It has been shown that pgm (phosphoglucomutase) mutation reduces amyloplast sedimentation and gravity sensing in plants. ARG1 genes encode DnaJ-like protein. However, these genes would not be considered to encode a receptor that is activated by gravistimulation and in turn alters intracellular molecules to create a response. Therefore, it is predicted that plants have an unidentified gravity-sensing molecule. To identify that, we have been attempting to detect a mutation that is defective in the gene that encodes the gravity-sensor. In this study, we evaluated gravity-responses of pgm arg1 double mutant that was defective in both 2 gravity-sensing pathways by using hyper-gravity conditions. Our results suggested that gravity responses depending on the unidentified gravity-sensing molecule that remained in pgm arg1 double mutant could be detected by using 25G condition with irradiating blue light from below., 資料番号: AA0065129058}, pages = {157--159}, publisher = {宇宙航空研究開発機構宇宙科学研究所 (JAXA)(ISAS), Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)}, title = {過重力環境を利用したシロイヌナズナの重力屈性異常突然変異体の重力応答性の評価}, volume = {27}, year = {2011} }