Ishii Y, Hoson T, Kamisaka S, Miyamoto K, Ueda J, Mantani S, Fujii S, Masuda Y, Yamamoto R
Laboratory of Biology and Chemistry, Tezukayama College, Nara, Japan.
Biol Sci Space. 1996 Mar;10(1):3-7. doi: 10.2187/bss.10.3.
The life cycle of Arabidopsis plants was examined by growing them on a horizontal clinostat. Seeds on agar media were allowed to germinate and seedlings were grown under a simulated microgravity on a horizontal clinostat. Clinorotation (3 rpm) did not appear to interfere with germination of plant seeds and development of cotyledons and leaves. Stress relaxation parameters of the cell wall, the minimum relaxation time and the relaxation rate did not appear to be affected by clinostat rotation. On the other hand, the length of inflorescences was reduced to 61-62% by clinostat rotation. Rotation was found to inhibit the polar transport of auxin, although inflorescence growth and auxin transport were not completely inhibited. From these facts, it is possible that the life cycle in Arabidopsis plants could be accomplished in space, although growth phenomena involving auxin transport and its action may be disturbed. Plants may have a capacity to grow in space and we may be able to cultivate crops in space.
通过在水平回转器上培养拟南芥植株来研究其生命周期。将琼脂培养基上的种子进行萌发，幼苗在水平回转器上的模拟微重力条件下生长。回转（3转/分钟）似乎并未干扰植物种子的萌发以及子叶和叶片的发育。细胞壁的应力松弛参数，即最小松弛时间和松弛速率，似乎不受回转器旋转的影响。另一方面，回转器旋转使花序长度减少至61 - 62%。虽然花序生长和生长素运输并未被完全抑制，但发现旋转会抑制生长素的极性运输。基于这些事实，尽管涉及生长素运输及其作用的生长现象可能会受到干扰，但拟南芥植株的生命周期有可能在太空中完成。植物可能具有在太空中生长的能力，并且我们或许能够在太空中种植作物。
