Short-term aluminium-induced changes in barley root tips.
The short-term exposure of barley roots to low Al concentration caused significant root growth inhibition and radial swelling of roots. During Al treatment, the radial expansion of root cells occurred in root tissues representing elongation zone and meristem. Both low pH and Al treatments caused significant disruption of cell membranes in swollen roots. In contrast to Evans blue uptake callose formation was observed only at higher Al concentrations and was detected in both swollen and adjacent root areas. Similarly to Al, exogenous short-term application of indole-3-acetic acid, polar transport inhibitor triiodobenzoic acid, ethylene precursor 1-aminocyclopropane-1-carboxylic acid or H(2)O(2) evoked root growth inhibition and radial cell expansion in barley root tip too.
Zelinová
Veronika
V
Institute of Botany, Slovak Academy of Sciences, Bratislava, Slovak Republic.
Halušková
Lubica
L
Huttová
Jana
J
Illéš
Peter
P
Mistrík
Igor
I
Valentovičová
Katarína
K
Tamás
Ladislav
L
D000535:Aluminum / Q000494:pharmacology*; D016923:Cell Death / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D001467:Hordeum / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism; D006861:Hydrogen Peroxide / Q000378:metabolism; D018519:Meristem / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism
D006861:Hydrogen Peroxide; D000535:Aluminum