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  Molecular plant responses to combined abiotic stresses put a spotlight on unknown and abundant genes

Sewelam, N., Brilhaus, D., Bräutigam, A., Alseekh, S., Fernie, A. R., & Maurino, V. G. (2020). Molecular plant responses to combined abiotic stresses put a spotlight on unknown and abundant genes. Journal of Experimental Botany, 71(16), 5098-5112. doi:10.1093/jxb/eraa250.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-D261-F Version Permalink: http://hdl.handle.net/21.11116/0000-0006-D262-E
Genre: Journal Article

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Sewelam, Nasser1, Author
Brilhaus, Dominik1, Author
Bräutigam, Andrea1, Author
Alseekh, S.2, Author              
Fernie, A. R.2, Author              
Maurino, Veronica G1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Central Metabolism, Department Willmitzer, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753339              

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 Abstract: Environmental stresses such as drought, heat and salinity limit plant development and agricultural productivity. While individual stresses have been studied extensively, much less is known about the molecular interaction of responses to multiple stresses. To address this problem, we investigated molecular responses of Arabidopsis thaliana to single, double, and triple combinations of salt, osmotic, and heat stresses. A metabolite profiling analysis indicated the production of specific compatible solutes depending on the nature of the stress applied. We found that in combination with other stresses, heat has a dominant effect on global gene expression and metabolites level patterns. Treatments that include heat stress lead to strongly reduced transcription of genes coding for abundant photosynthetic proteins and proteins regulating the cell life cycle, while genes involved in protein degradation are upregulated. Under combined stress conditions, the plants shifted their metabolism to a survival state characterized by low productivity. Our work provides molecular evidence for the dangers for plant productivity and future world food security posed by heat waves resulting from global warming. We highlight candidate genes, many of which are functionally uncharacterized, for engineering plant abiotic stress tolerance.

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Language(s): eng - English
 Dates: 2020-06
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: DOI: 10.1093/jxb/eraa250
BibTex Citekey: 10.1093/jxb/eraa250
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Title: Journal of Experimental Botany
  Other : J. Exp. Bot
Source Genre: Journal
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Publ. Info: Oxford : Oxford University Press [etc.]
Pages: - Volume / Issue: 71 (16) Sequence Number: - Start / End Page: 5098 - 5112 Identifier: ISSN: 0022-0957
CoNE: https://pure.mpg.de/cone/journals/resource/954925413883