globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.12626
论文题名:
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
作者: Zinta G.; Abdelgawad H.; Domagalska M.A.; Vergauwen L.; Knapen D.; Nijs I.; Janssens I.A.; Beemster G.T.S.; Asard H.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2014
卷: 20, 期:12
起始页码: 3670
结束页码: 3685
语种: 英语
英文关键词: Antioxidants ; Biomass ; Climate change ; Gene expression ; Oxidative stress ; Photorespiration ; Photosynthesis
Scopus关键词: Arabidopsis thaliana ; carbon dioxide ; hydrogen peroxide ; adverse effects ; analysis of variance ; antioxidant responsive element ; Arabidopsis ; biological model ; biomass ; climate change ; computer simulation ; drought ; gene expression profiling ; genetics ; heat ; metabolism ; microarray analysis ; photosynthesis ; physiological stress ; physiology ; Analysis of Variance ; Antioxidant Response Elements ; Arabidopsis ; Biomass ; Carbon Dioxide ; Climate Change ; Computer Simulation ; Droughts ; Gene Expression Profiling ; Hot Temperature ; Hydrogen Peroxide ; Microarray Analysis ; Models, Biological ; Photosynthesis ; Stress, Physiological
英文摘要: 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 ambient and 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. © 2014 John Wiley & Sons Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62157
Appears in Collections:影响、适应和脆弱性

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作者单位: Research Group of Plant and Vegetation Ecology, Department of Biology, University of Antwerp, Universiteitsplein 1, Antwerp, Wilrijk, Belgium; Laboratory for Molecular Plant Physiology and Biotechnology, Department of Biology, University of Antwerp, Groenenborgerlaan 171, Antwerp, Belgium; Zebrafish Laboratory, Veterinary Physiology and Biochemistry, Department of Veterinary Sciences, University of Antwerp, Universiteitsplein 1, Antwerp, Wilrijk, Belgium; Systemic Physiological and Ecotoxicological Research, Department of Biology, University of Antwerp, Groenenborgerlaan 171, Antwerp, Belgium

Recommended Citation:
Zinta G.,Abdelgawad H.,Domagalska M.A.,et al. 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[J]. Global Change Biology,2014-01-01,20(12)
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