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http://hdl.handle.net/1942/16577
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DC Field | Value | Language |
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dc.contributor.author | KEUNEN, Els | - |
dc.contributor.author | JOZEFCZAK, Marijke | - |
dc.contributor.author | REMANS, Tony | - |
dc.contributor.author | VANGRONSVELD, Jaco | - |
dc.contributor.author | CUYPERS, Ann | - |
dc.date.accessioned | 2014-04-03T12:08:24Z | - |
dc.date.available | 2014-04-03T12:08:24Z | - |
dc.date.issued | 2013 | - |
dc.identifier.citation | Environmental and experimental botany, 91, p. 63-73 | - |
dc.identifier.issn | 0098-8472 | - |
dc.identifier.uri | http://hdl.handle.net/1942/16577 | - |
dc.description.abstract | Plant growth and development can be highly restricted by environmental stressors such as cadmium (Cd) pollution. The mitochondrial non-phosphorylating alternative respiratory pathway, mediated by alternative oxidase (AOX), alternative NAD(P)H dehydrogenases (NDs) and uncoupling protein (UCP), was suggested to be crucial in the acclimation of plants to fluctuating environmental conditions. Therefore, we examined the effects of environmentally realistic Cd exposure (5 and 10 μM) on the alternative respiratory chain in Arabidopsis thaliana using a kinetic exposure setup. We demonstrated that during exposure to Cd, Arabidopsis seedlings show a mitochondrial oxidative challenge to which they acutely respond by increasing the transcript level of several AOX, ND and UCP isoforms in both roots and leaves. In addition, AOX protein levels increased during acute Cd exposure (2 and 24 h). Based on our data, we suggest the formation of a condensed non-phosphorylating electron transport chain (ETC) functioning through cytosolic NDs and AOX, with co-regulation of ND and AOX expression during Cd stress. Therefore, both enzymes might cooperate in the potential acclimation of Arabidopsis seedlings to environmentally realistic Cd exposure by modulating the extent of mitochondrial ROS production. | - |
dc.description.sponsorship | Research Foundation Flanders (FWO); Els Keunen; Hasselt University through BOF (Bijzonder Onderzoeksfonds) projects of Hasselt University (Grant numbers BOF08G01, BOF07N05); Methusalem project (Grant numbers 08M03VGRJ, G.0807.09) | - |
dc.language.iso | en | - |
dc.rights | Copyright © 2013 Elsevier B.V. All rights reserved. | - |
dc.subject.other | alternative respiration; Arabidopsis thaliana; cadmium; gene families; mitochondria; oxidative stress | - |
dc.title | Alternative respiration as a primary defence during cadmium-induced mitochondrial oxidative challenge in Arabidopsis thaliana | - |
dc.type | Journal Contribution | - |
dc.identifier.epage | 73 | - |
dc.identifier.spage | 63 | - |
dc.identifier.volume | 91 | - |
local.bibliographicCitation.jcat | A1 | - |
local.type.refereed | Refereed | - |
local.type.specified | Article | - |
dc.identifier.doi | 10.1016/j.envexpbot.2013.02.008 | - |
dc.identifier.isi | 000319790700007 | - |
dc.identifier.url | http://tarjomefa.com/wp-content/uploads/2017/03/6276-English-TarjomeFa.pdf | - |
item.accessRights | Restricted Access | - |
item.validation | ecoom 2014 | - |
item.fulltext | With Fulltext | - |
item.fullcitation | KEUNEN, Els; JOZEFCZAK, Marijke; REMANS, Tony; VANGRONSVELD, Jaco & CUYPERS, Ann (2013) Alternative respiration as a primary defence during cadmium-induced mitochondrial oxidative challenge in Arabidopsis thaliana. In: Environmental and experimental botany, 91, p. 63-73. | - |
item.contributor | KEUNEN, Els | - |
item.contributor | JOZEFCZAK, Marijke | - |
item.contributor | REMANS, Tony | - |
item.contributor | VANGRONSVELD, Jaco | - |
item.contributor | CUYPERS, Ann | - |
crisitem.journal.issn | 0098-8472 | - |
crisitem.journal.eissn | 1873-7307 | - |
Appears in Collections: | Research publications |
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1-s2.0-S009884721300035X-main.pdf Restricted Access | Published version | 1.52 MB | Adobe PDF | View/Open Request a copy |
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