STS-95 space experiment for plant growth and development,

Junichi Ueda; Kensuke Miyamoto; Tomokazu Yuda; Tomoki Hoshino; Keiko Sato; Shuhei Fujii; Shigeki Kamigaichi; Ryutaro Izumi; Noriaki Ishioka; Sachiko Aizawa; Izumi Yoshizaki; Shimazu; Keiji Fukui

doi:10.2187/bss.14.47

Junichi Ueda, Kensuke Miyamoto, Tomokazu Yuda, Tomoki Hoshino, Keiko Sato, Shuhei Fujii, Shigeki Kamigaichi, Ryutaro Izumi, Noriaki Ishioka, Sachiko Aizawa, Izumi Yoshizaki, Shimazu, Keiji Fukui

Author information

Junichi Ueda
College of Integrated Arts and Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531, Japan
Kensuke Miyamoto
College of Integrated Arts and Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531, Japan
Tomokazu Yuda
College of Integrated Arts and Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531, Japan
Tomoki Hoshino
College of Integrated Arts and Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531, Japan
Keiko Sato
College of Integrated Arts and Sciences, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531, Japan
Shuhei Fujii
Tezukayama College, 3-1-3 Gakuenminami, Nara 631-8585, Japan
Shigeki Kamigaichi
National Space Development Agency of Japan, 2-1-1 Sengen, Tsukuba 305-8505, Japan
Ryutaro Izumi
National Space Development Agency of Japan, 2-1-1 Sengen, Tsukuba 305-8505, Japan
Noriaki Ishioka
National Space Development Agency of Japan, 2-1-1 Sengen, Tsukuba 305-8505, Japan
Sachiko Aizawa
National Space Development Agency of Japan, 2-1-1 Sengen, Tsukuba 305-8505, Japan
Izumi Yoshizaki
National Space Development Agency of Japan, 2-1-1 Sengen, Tsukuba 305-8505, Japan
Shimazu
Japan Space Forum, 1-29-6 Hamamatsu-cho, Tokyo 105-0013, Japan
Keiji Fukui
Japan Space Forum, 1-29-6 Hamamatsu-cho, Tokyo 105-0013, Japan

Keywords: Auxin polar transport, Cell wall extensibility, Growth and development, Maize, Microgravity, Pea, Pisum sativum, Space, STS-95, Zea mays

JOURNAL FREE ACCESS

2000 Volume 14 Issue 2 Pages 47-57

DOI https://doi.org/10.2187/bss.14.47

Details

Abstract

The principal objective of the space experiment, BRIC-AUX on STS-95, was the integrated analysis of the growth and development of etiolated pea and maize seedlings in space, and the effect of microgravity conditions in space on auxin polar transport in the segments. Microgravity conditions in space strongly affected the growth and development of etiolated pea and maize seedlings. Etiolated pea and maize seedlings were leaned and curved during space flight, respectively. Finally the growth inhibition of these seedlings was also observed. Roots of some pea seedlings grew toward the aerial space of Plant Growth Chamber. Extensibilities of cell walls of the third internode of etiolated pea epicotyls and the top region of etiolated maize coleoptiles which were germinated and grown under microgravity conditions in space were significantly low. Activities of auxin polar transport in the second internode segments of etiolated pea seedlings and coleoptile segments of etiolated maize seedlings were significantly inhibited and extremely promoted, respectively, under microgravity conditions in space. These results strongly suggest that auxin polar transport as well as the growth and development of plants is controlled under gravity on the earth.

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