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Title: | Survival of Cd-exposed Arabidopsis thaliana: Are these plants reproductively challenged? | Authors: | KEUNEN, Els TRUYENS, Sascha BRUCKERS, Liesbeth REMANS, Tony VANGRONSVELD, Jaco CUYPERS, Ann |
Issue Date: | 2011 | Publisher: | ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER | Source: | 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 | Keywords: | Arabidopsis thaliana; Cadmium phytotoxicity; Development; Phenotypic analysis | Document URI: | http://hdl.handle.net/1942/12331 | ISSN: | 0981-9428 | e-ISSN: | 1873-2690 | DOI: | 10.1016/j.plaphy.2011.07.013 | ISI #: | 000295949400002 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2012 |
Appears in Collections: | Research publications |
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