Central Metabolic Responses to Ozone and Herbivory Affect Photosynthesis and Stomatal Closure.

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Version: Author's accepted manuscript
Serval ID
serval:BIB_68E08D4A53C8
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Central Metabolic Responses to Ozone and Herbivory Affect Photosynthesis and Stomatal Closure.
Journal
Plant Physiology
Author(s)
Papazian S., Khaling E., Bonnet C., Lassueur S., Reymond P., Moritz T., Blande J.D., Albrectsen B.R.
ISSN
1532-2548 (Electronic)
ISSN-L
0032-0889
Publication state
Published
Issued date
2016
Peer-reviewed
Oui
Volume
172
Number
3
Pages
2057-2078
Language
english
Abstract
Plants have evolved adaptive mechanisms that allow them to tolerate a continuous range of abiotic and biotic stressors. Tropospheric ozone (O3), 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 O3 and the specialist herbivore Pieris brassicae Transcriptomics and metabolomics data were evaluated using multivariate, correlation, and network analyses for the O3 and herbivory responses. O3 stress symptoms resembled those of senescence and phosphate starvation, while a sequential shift from O3 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 O3 stress inhibited photosynthesis and carbon assimilation, sequential herbivory counteracted the initial responses induced by O3, 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.

Pubmed
Web of science
Open Access
Yes
Create date
02/02/2017 8:35
Last modification date
20/08/2019 14:24
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