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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/12331

Title: Survival of Cd-exposed Arabidopsis thaliana: Are these plants reproductively challenged?
Authors: KEUNEN, Els
BRUCKERS, Liesbeth
Issue Date: 2011
Citation: PLANT PHYSIOLOGY AND BIOCHEMISTRY, 49 (10). p. 1084-1091
Abstract: Plants exposed to cadmium (Cd) show morphological and physiological disorders. To increase our knowledge regarding Cd-induced signalling, most often the effects of acute exposure are investigated. However, this does not allow in-depth analysis of morphological effects. Therefore, we chronically exposed Arabidopsis thaliana plants to environmentally realistic Cd concentrations (5 or 10 mu M) and, using a described phenotypic framework methodology, we determined the impact of Cd on the plant's ability to complete its life cycle and produce germinative seeds. Visible Cd-induced morphological changes were observed within a short exposure period, with chlorotic and anthocyanous leaf colouring occurring dose-dependently. Although rosette growth was severely reduced in Cd-exposed plants, all plants were able to emerge inflorescences and produce siliques containing germinative seeds, thus confirming the non-lethality of the used Cd concentrations. Although the growth inhibition of Cd-exposed plants was dependent on the dose, both concentrations had similar effects on inflorescence height and silique counts. In conclusion, vegetative growth of plants chronically exposed to Cd is inhibited in a concentration-dependent manner. However, the effect on plant regeneration is clearly stress-determined but independent on the Cd concentration applied. In Arabidopsis thaliana, vegetative and reproductive growth are differentially influenced by Cd. (C) 2011 Elsevier Masson SAS. All rights reserved.
Notes: Cuypers, A (reprint author), [Keunen, E; Truyens, S; Remans, T; Vangronsveld, J; Cuypers, A] Hasselt Univ, Ctr Environm Sci, B-3590 Diepenbeek, Belgium. [Bruckers, L] Hasselt Univ, Interuniv Inst Biostat & Stat Bioinformat, B-3590 Diepenbeek, Belgium. ann.cuypers@uhasselt.be
URI: http://hdl.handle.net/1942/12331
DOI: 10.1016/j.plaphy.2011.07.013
ISI #: 000295949400002
ISSN: 0981-9428
Category: A1
Type: Journal Contribution
Validation: ecoom, 2012
Appears in Collections: Research publications

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