Academic Journal
Identifying the Pressure Points of Acute Cadmium Stress Prior to Acclimation in Arabidopsis thaliana
| العنوان: | Identifying the Pressure Points of Acute Cadmium Stress Prior to Acclimation in Arabidopsis thaliana |
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| المؤلفون: | DECKERS, Jana, HENDRIX, Sophie, Prinsen, Els, VANGRONSVELD, Jaco, CUYPERS, Ann |
| المساهمون: | DECKERS, Jana, HENDRIX, Sophie, Prinsen, Els, VANGRONSVELD, Jaco, CUYPERS, Ann |
| بيانات النشر: | MDPI |
| سنة النشر: | 2020 |
| المجموعة: | Document Server@UHasselt (Universiteit Hasselt) |
| مصطلحات موضوعية: | Arabidopsis thaliana, cadmium, acute responses, glutathione, hydrogen peroxide, 1-aminocyclopropane-1-carboxylic acid, ethylene, oxidative challenge |
| الوصف: | The toxic metal cadmium (Cd) is a major soil pollutant. Knowledge on the acute Cd-induced stress response is required to better understand the triggers and sequence of events that precede plant acclimation. Therefore, we aimed to identify the pressure points of Cd stress using a short-term exposure setup ranging from 0 h to 24 h. Acute responses related to glutathione (GSH), hydrogen peroxide (H 2 O 2), 1-aminocyclopropane-1-carboxylic acid (ACC), ethylene and the oxidative challenge were studied at metabolite and/or transcript level in roots and leaves of Arabidopsis thaliana either exposed or not to 5 µM Cd. Cadmium rapidly induced root GSH depletion, which might serve as an alert response and modulator of H 2 O 2 signalling. Concomitantly, a stimulation of root ACC levels was observed. Leaf responses were delayed and did not involve GSH depletion. After 24 h, a defined oxidative challenge became apparent, which was most pronounced in the leaves and concerted with a strong induction of leaf ACC synthesis. We suggest that root GSH depletion is required for a proper alert response rather than being a merely adverse effect. Furthermore, we propose that roots serve as command centre via a.o. root-derived ACC/ethylene to engage the leaves in a proper stress response. ; This research was funded by the Research Foundation-Flanders (FWO) through a PhD grant fellowship for Jana Deckers (1182220N). Additional funding came from FWO projects to Ann Cuypers [grant numbers G0B6716N, G0C7518N] |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | International Journal of Molecular Sciences, 21 (17) (Art N° 6232); http://hdl.handle.net/1942/31960; 17; 21; WOS:000569661800001 |
| DOI: | 10.3390/ijms21176232 |
| الاتاحة: | http://hdl.handle.net/1942/31960 https://doi.org/10.3390/ijms21176232 |
| Rights: | This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited ; info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.A7634B75 |
| قاعدة البيانات: | BASE |
| DOI: | 10.3390/ijms21176232 |
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