Please use this identifier to cite or link to this item:
http://hdl.handle.net/1942/19191
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | SAENEN, Eline | - |
dc.contributor.author | HOREMANS, Nele | - |
dc.contributor.author | VANHOUDT, Nathalie | - |
dc.contributor.author | VANDENHOVE, Hildegarde | - |
dc.contributor.author | BIERMANS, Geert | - |
dc.contributor.author | van Hees, M. | - |
dc.contributor.author | Wannijn, J. | - |
dc.contributor.author | VANGRONSVELD, Jaco | - |
dc.contributor.author | CUYPERS, Ann | - |
dc.date.accessioned | 2015-09-23T06:58:39Z | - |
dc.date.available | 2015-09-23T06:58:39Z | - |
dc.date.issued | 2015 | - |
dc.identifier.citation | JOURNAL OF ENVIRONMENTAL RADIOACTIVITY, 150, p. 36-43 | - |
dc.identifier.issn | 0265-931X | - |
dc.identifier.uri | http://hdl.handle.net/1942/19191 | - |
dc.description.abstract | Anthropogenic activities have led to a widespread uranium (U) contamination in many countries. The toxic effects of U at the cellular level have mainly been investigated at a pH around 5.5, the optimal pH for hydroponically grown plants. However, since the speciation of U, and hence its toxicity, is strongly dependent on environmental factors such as the pH, it is important to investigate the effects of U at different environmentally relevant pH levels. Although U is poorly translocated from the roots to the shoots, resulting in a low U concentration in the leaves, it has been demonstrated that toxic effects in the leaves were already visible after 1 day exposure at pH 5.5, although only when exposed to relatively high U concentrations (100 mM). Therefore, the present study aimed to analyse the effects of different U concentrations (ranging from 0 to 100 mM) at pH 4.5 in leaves of Arabidopsis thaliana plants. Results indicate that U induces early senescence in A. thaliana leaves as was suggested by a decreased expression of CAT2 accompanied by an induction of CAT3 expression, a decreased CAT capacity and an increased lipid peroxidation. In addition, miRNA398b/c is involved in the regulation of the SOD response in the leaves. As such, an increased MIR398b/c expression was observed leading to a decreased transcript level of CSD1/ 2. Finally, the biosynthesis of ascorbate was induced after U exposure. This can point towards an important role for this metabolite in the scavenging of reactive oxygen species under U stress. | - |
dc.description.sponsorship | This work was supported by a PhD grant for Eline Saenen from the Belgian Nuclear Research Centre (SCK center dot CEN). | - |
dc.language.iso | en | - |
dc.rights | © 2015 Elsevier Ltd. All rights reserved. | - |
dc.subject.other | arabidopsis thaliana; uranium toxicity; pH; oxidative stress; senescence | - |
dc.title | Oxidative stress responses induced by uranium exposure at low pH in leaves of Arabidopsis thaliana plants | - |
dc.type | Journal Contribution | - |
dc.identifier.epage | 43 | - |
dc.identifier.spage | 36 | - |
dc.identifier.volume | 150 | - |
local.bibliographicCitation.jcat | A1 | - |
dc.description.notes | Saenen, E (reprint author), Boeretang 200, B-2400 Mol, Belgium. eline.saenen@sckcen.be; nele.horemans@sckcen.be; nathalie.vanhoudt@sckcen.be; hildegarde.vandenhove@sckcen.be; geert.biermans@FANC.FGOV.BE; mvhees@sckcen.be; jwannijg@sckcen.be; jaco.vangronsveld@uhasselt.be; ann.cuypers@uhasselt.be | - |
local.type.refereed | Refereed | - |
local.type.specified | Article | - |
dc.identifier.doi | 10.1016/j.jenvrad.2015.07.021 | - |
dc.identifier.isi | 000364269200004 | - |
item.contributor | SAENEN, Eline | - |
item.contributor | HOREMANS, Nele | - |
item.contributor | VANHOUDT, Nathalie | - |
item.contributor | VANDENHOVE, Hildegarde | - |
item.contributor | BIERMANS, Geert | - |
item.contributor | van Hees, M. | - |
item.contributor | Wannijn, J. | - |
item.contributor | VANGRONSVELD, Jaco | - |
item.contributor | CUYPERS, Ann | - |
item.validation | ecoom 2016 | - |
item.fullcitation | SAENEN, Eline; HOREMANS, Nele; VANHOUDT, Nathalie; VANDENHOVE, Hildegarde; BIERMANS, Geert; van Hees, M.; Wannijn, J.; VANGRONSVELD, Jaco & CUYPERS, Ann (2015) Oxidative stress responses induced by uranium exposure at low pH in leaves of Arabidopsis thaliana plants. In: JOURNAL OF ENVIRONMENTAL RADIOACTIVITY, 150, p. 36-43. | - |
item.accessRights | Restricted Access | - |
item.fulltext | With Fulltext | - |
crisitem.journal.issn | 0265-931X | - |
crisitem.journal.eissn | 1879-1700 | - |
Appears in Collections: | Research publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
1-s2.0-S0265931X15300631-main.pdf Restricted Access | Published version | 831.35 kB | Adobe PDF | View/Open Request a copy |
SCOPUSTM
Citations
12
checked on Sep 2, 2020
WEB OF SCIENCETM
Citations
22
checked on Apr 23, 2024
Page view(s)
82
checked on Jun 9, 2022
Download(s)
74
checked on Jun 9, 2022
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.