Effects of hypergravity on the elongation growth in radish and cucumber hypocotyls.
J Plant Res
; 108(1089): 59-64, 1995 Mar.
Article
de En
| MEDLINE
| ID: mdl-11540140
ABSTRACT
The elongation growth of the hypocotyls of radish and cucumber seedlings was examined under hypergravity in a newly developed centrifuge (Kasahara et al. 1995). The effects of hypergravity on elongation growth differed between the two species. The rate of elongation of radish hypocotyls was reduced under basipetal hypergravity (H+2O g) but not under acropetal hypergravity (H-13 g), as compared to growth under the control conditions (C+1 g and C-1 g). In cucumber hypocotyls, elongation growth was inhibited not only by basipetal but also by acropetal hypergravity. Under these conditions, the reduction in the elongation growth of both radish and cucumber hypocotyls was accompanied by an increase in their thickness. Although no distinct differences in relative composition of neutral sugars were found, the amounts of cell-wall components (pectic substances, hemicelluloses and cellulose) per unit length of hypocotyls were increased by exposure to hypergravity.
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Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Hypocotyle
/
Surpesanteur
/
Cucumis sativus
/
Brassicaceae
Langue:
En
Journal:
J Plant Res
Sujet du journal:
BOTANICA
Année:
1995
Type de document:
Article
Pays d'affiliation:
Japon