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| Status |
Public on Apr 24, 2014 |
| Title |
Physiological, biochemical and genome-wide transcriptional analysis reveals that elevated CO2 mitigates the impact of combined heat wave and drought stress in Arabidopsis thaliana at multiple organizational levels |
| Organism |
Arabidopsis thaliana |
| Experiment type |
Expression profiling by array
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| Summary |
Genome-wide transcriptional profiling of Arabidopsis thaliana to a combination of heatwave and drought under ambient and elevated CO2. Goal of this study was elucidate the transcriptional responses to a combination of heat wave and drought, and to see how these responses are modifed under future climate (high) CO2.
Climate changes increasingly threaten plant growth and productivity. Such changes are complex and involve multiple environmental factors, including rising CO2 levels and climate extreme events. As the molecular and physiological mechanisms underlying plant responses to realistic future climate extreme conditions are still poorly understood, a multiple organizational level-analysis (i.e. eco-physiological, biochemical and transcriptional) was performed, using Arabidopsis exposed to incremental heat wave and water deficit under elevated CO2.The climate extreme resulted in biomass reduction, photosynthesis inhibition, and considerable increases in stress parameters. Photosynthesis was a major target as demonstrated at the physiological and transcriptional levels. In contrast, the climate extreme treatment induced a protective effect on oxidative membrane damage, most likely as a result of strongly increased lipophilic antioxidants and membrane-protecting enzymes. Elevated CO2 significantly mitigated the negative impact of a combined heat and drought, as apparent in biomass reduction, photosynthesis inhibition, chlorophyll fluorescence decline, H2O2 production and protein oxidation. Analysis of enzymatic and molecular antioxidants revealed that the stress-mitigating CO2 effect operates through up-regulation of antioxidant defense metabolism, as well as by reduced photorespiration resulting in lowered oxidative pressure. Therefore, exposure to future climate extreme episodes will negatively impact plant growth and production, but elevated CO2 is likely to mitigate this effect.
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| Overall design |
Transcriptome analysis was performed by Agilent Arabidopsis (V4) 4x44K platform which represented all known genes in the Arabidopsisgenome. Experiments were performed using a modified loop design (Knapen et al., 2009). This design consisted of total 8 arrays; sample from each treatment was labelled once and has 4 biological replicates, two of which were labelled in red and two in green
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| Contributor(s) |
Zinta G, AbdElgawad H, Domagalska MA, Vergauwen L, Knapen D, Nijs I, Janssens IA, Beemster GT, Asard H |
| Citation(s) |
24802996, 29462345 |
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| Submission date |
Apr 24, 2014 |
| Last update date |
Jun 18, 2019 |
| Contact name |
Han Asard |
| E-mail(s) |
[email protected]
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| Phone |
+3232653638
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| Organization name |
University of Antwerp
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| Department |
Department of Biology
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| Lab |
Laboratory of Molecular Plant Physiology and Biotechnology
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| Street address |
Groenenborgerlaan 171
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| City |
Antwerp |
| State/province |
Antwerpen |
| ZIP/Postal code |
2020 |
| Country |
Belgium |
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| Platforms (1) |
| GPL12621 |
Agilent-021169 Arabidopsis 4 Oligo Microarray (V4) (Probe Name version) |
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| Samples (16)
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| Relations |
| BioProject |
PRJNA245258 |
| Supplementary file |
Size |
Download |
File type/resource |
| GSE57035_Array_1.1.gpr.gz |
5.4 Mb |
(ftp)(http) |
GPR |
| GSE57035_Array_1.2.gpr.gz |
5.4 Mb |
(ftp)(http) |
GPR |
| GSE57035_Array_1.3.gpr.gz |
5.4 Mb |
(ftp)(http) |
GPR |
| GSE57035_Array_1.4.gpr.gz |
5.5 Mb |
(ftp)(http) |
GPR |
| GSE57035_Array_2.1.gpr.gz |
5.3 Mb |
(ftp)(http) |
GPR |
| GSE57035_Array_2.2.gpr.gz |
5.3 Mb |
(ftp)(http) |
GPR |
| GSE57035_Array_2.3.gpr.gz |
5.4 Mb |
(ftp)(http) |
GPR |
| GSE57035_Array_2.4.gpr.gz |
5.4 Mb |
(ftp)(http) |
GPR |
| Processed data included within Sample table |
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