ISSN:
1573-5036
Keywords:
aluminium toxicity
;
calcium channels
;
plasma membrane
;
stimulus/response coupling
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract The primary Al lesion is suggested to be blockage of the root plasma membrane Ca2+ channels. Resulting decrease in net Ca2+ uptake into the root tip cells leads to Ca2+ deficiency in the cytoplasm and disturbance of the cell Ca2+ homeostasis, effects that can deleteriously influence cell structure and function. Contribution of internal Ca2+ stores to maintaining cytoplasmic Ca2+ concentration at physiological levels is considered to be insufficient in meristematic cells at the root tip. It is suggested that differential blockage of Ca2+ channels may be at the core of differential tolerance to Al, opening up the possibility of manipulating Al tolerance at the molecular level.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00009574
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