TY - JOUR
T1 - Changes in the rheological properties of the cell wall of plant seedlings under simulated microgravity conditions
AU - Masuda, Y.
AU - Kamisaka, S.
AU - Yamamoto, R.
AU - Hoson, T.
AU - Nishinari, K.
PY - 1994
Y1 - 1994
N2 - In this review article, we discuss the changes in the mechanical properties of the primary cell wall of different organs of several species of plant seedlings grown under simulated microgravity conditions. We compared growth and tropistic responses of these organs growing under different microgravity conditions, namely: 1) 3-D clinostat (three-dimensional clinostat with two axes); 2) water-submergence for rice seedlings, and 3) for comparison, an accelerated gravity using a specifically designed centrifuge. We measured the minimum stress-relaxation time as the parameter representing the mechanical property of the cell wall. We also measured extensiblity, in mm/g. The 3-D clinostat condition disturbed the normal gravitropic response of organs but affected growth rate and mechanical properties of the cell wall very little. Water-submergence of rice seedlings caused an acceleration of coleoptile elongation in the dark and caused a marked change in the mechanical property of the cell wall. However, the additional gravity of 30-135 xg showed only a small effect on growth and the mechanical property of the cell wall.
AB - In this review article, we discuss the changes in the mechanical properties of the primary cell wall of different organs of several species of plant seedlings grown under simulated microgravity conditions. We compared growth and tropistic responses of these organs growing under different microgravity conditions, namely: 1) 3-D clinostat (three-dimensional clinostat with two axes); 2) water-submergence for rice seedlings, and 3) for comparison, an accelerated gravity using a specifically designed centrifuge. We measured the minimum stress-relaxation time as the parameter representing the mechanical property of the cell wall. We also measured extensiblity, in mm/g. The 3-D clinostat condition disturbed the normal gravitropic response of organs but affected growth rate and mechanical properties of the cell wall very little. Water-submergence of rice seedlings caused an acceleration of coleoptile elongation in the dark and caused a marked change in the mechanical property of the cell wall. However, the additional gravity of 30-135 xg showed only a small effect on growth and the mechanical property of the cell wall.
KW - cell wall extensibility
KW - clinostat
KW - hypergravity
KW - microgravity
KW - plant growth
KW - water-submergence
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U2 - 10.3233/BIR-1994-31205
DO - 10.3233/BIR-1994-31205
M3 - Review article
C2 - 8729479
AN - SCOPUS:0028222266
VL - 31
SP - 171
EP - 177
JO - Biorheology
JF - Biorheology
SN - 0006-355X
IS - 2
ER -