| Title: | Central Metabolic Responses to Ozone and Herbivory Affect Photosynthesis and Stomatal Closure |
| Author(s): | Papazian S; Khaling E; Bonnet C; Lassueur S; Reymond P; Moritz T; Blande JD; Albrectsen BR; |
| Address: | "Umea Plant Science Centre, Department of Plant Physiology, Umea University, 90187 Umea (S.P., B.R.A.); Department of Forest Genetic and Plant Physiology, Swedish University of Agricultural Sciences, 90183 Umea, Sweden (T.M.). Department of Environmental and Biological Sciences, University of Eastern Finland, FIN-70211 Kuopio, Finland (E.K., J.D.B.); and. Department of Plant Molecular Biology, University of Lausanne, 1015 Lausanne, Switzerland (C.B., S.L., P.R.). Umea Plant Science Centre, Department of Plant Physiology, Umea University, 90187 Umea (S.P., B.R.A.); Department of Forest Genetic and Plant Physiology, Swedish University of Agricultural Sciences, 90183 Umea, Sweden (T.M.); james.blande@uef.fi benedicte.albrectsen@umu.se. Department of Environmental and Biological Sciences, University of Eastern Finland, FIN-70211 Kuopio, Finland (E.K., J.D.B.); and james.blande@uef.fi benedicte.albrectsen@umu.se. Department of Plant Molecular Biology, University of Lausanne, 1015 Lausanne, Switzerland (C.B., S.L., P.R.) james.blande@uef.fi benedicte.albrectsen@umu.se" |
| ISSN/ISBN: | 1532-2548 (Electronic) 0032-0889 (Print) 0032-0889 (Linking) |
| Abstract: | "Plants have evolved adaptive mechanisms that allow them to tolerate a continuous range of abiotic and biotic stressors. Tropospheric ozone (O(3)), a global anthropogenic pollutant, directly affects living organisms and ecosystems, including plant-herbivore interactions. In this study, we investigate the stress responses of Brassica nigra (wild black mustard) exposed consecutively to O(3) and the specialist herbivore Pieris brassicae Transcriptomics and metabolomics data were evaluated using multivariate, correlation, and network analyses for the O(3) and herbivory responses. O(3) stress symptoms resembled those of senescence and phosphate starvation, while a sequential shift from O(3) to herbivory induced characteristic plant defense responses, including a decrease in central metabolism, induction of the jasmonic acid/ethylene pathways, and emission of volatiles. Omics network and pathway analyses predicted a link between glycerol and central energy metabolism that influences the osmotic stress response and stomatal closure. Further physiological measurements confirmed that while O(3) stress inhibited photosynthesis and carbon assimilation, sequential herbivory counteracted the initial responses induced by O(3), resulting in a phenotype similar to that observed after herbivory alone. This study clarifies the consequences of multiple stress interactions on a plant metabolic system and also illustrates how omics data can be integrated to generate new hypotheses in ecology and plant physiology" |
| Keywords: | "Animals Energy Metabolism/drug effects/genetics Genes, Plant Glycerol/metabolism Herbivory/*drug effects Insecta/physiology Metabolome/drug effects/genetics Models, Biological Mustard Plant/genetics/*metabolism/*parasitology Ozone/*pharmacology Photosynth;" |
| Notes: | "MedlinePapazian, Stefano Khaling, Eliezer Bonnet, Christelle Lassueur, Steve Reymond, Philippe Moritz, Thomas Blande, James D Albrectsen, Benedicte R eng Research Support, Non-U.S. Gov't 2016/10/21 Plant Physiol. 2016 Nov; 172(3):2057-2078. doi: 10.1104/pp.16.01318. Epub 2016 Oct 6" |
