Japan Women's University Graduate School of Science
Japan Women's University Graduate School of Science
Hokkaido University Graduate School of Agriculture
Japan Women's University Graduate School of Science
出版者
宇宙科学研究所
出版者（英）
The Institute of Space and Astronautical Science (ISAS)
雑誌名
宇宙利用シンポジウム 第19回 平成14年度
雑誌名(英)
Space Utilization Research: Proceedings of the Nineteenth Space Utilization Symposium
ページ
73 - 75
発行年
2003-02
抄録（英）
The endodermal starch sheath cells were examined to investigate the cause of abnormal gravi-response in branches of the weeping type of Japanese cherry. Current-year branches of both the upright and the weeping types of Prunus spachiana were used as materials. The amyloplasts in the weeping type sedimented toward the base of the branches elongating upward and toward the apex in the branches elongating downward. In both cases, the sedimentation was toward the gravity vector. Then, the amyloplasts of the weeping branches were re-sedimented toward the vector of gravity after changing branch position mechanically to upward, same as the upright type. In electron microscope studies, it showed that amyloplasts had the lamella structure and the endodermal starch sheath cells were filled with large vacuoles. Moreover, endoplasmic reticulum, which was noticed in organelle relating to the graviperception, was presented near the amyloplasts in the endodermal starch sheath cell. The fine structures of the endodermal starch sheath cell of both types of cherry were similar. These results suggest that the abnormality of the gravi-response in the weeping Prunus trees is not due to the abnormal development of gravi-sensor.
シダレザクラの内皮デンプン鞘細胞の検討
