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SWATH-MS quantitative proteomic investigation of nitrogen starvation in Arabidopsis reveals new aspects of plant nitrogen stress responses.

08:00 EDT 23rd July 2018 | BioPortfolio

Summary of "SWATH-MS quantitative proteomic investigation of nitrogen starvation in Arabidopsis reveals new aspects of plant nitrogen stress responses."

Nitrogen is an essential macronutrient for plant growth and crop productivity. The aim of this work was to further investigate the molecular events during plant adaptation to nitrogen stress. Here, we present a SWATH-MS (Sequential window acquisition of all theoretical mass spectra)-based quantitative approach to detect proteome changes in Arabidopsis seedlings following nitrogen starvation. In total, 736 proteins of diverse functions were determined to show significant abundance changes between nitrogen-supplied and nitrogen-starved Arabidopsis seedlings. Functional categorization revealed the involvement of nitrogen stress-responsive proteins in biological processes including amino acid and protein metabolism, photosynthesis, lipid metabolism and glucosinolate metabolism. Subsequent phospholipid profiling of Arabidopsis seedlings showed changes in phospholipid composition that may enhance membrane fluidity as a response to nitrogen starvation. Moreover, an Arabidopsis grf6 T-DNA insertion mutant was found to have a nitrogen stress-sensitive phenotype. GRF6 is a 14-3-3 protein with elevated abundance upon nitrogen starvation and it may function as a positive regulator during nitrogen stress adaptation.

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This article was published in the following journal.

Name: Journal of proteomics
ISSN: 1876-7737
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Medical and Biotech [MESH] Definitions

Proteins that originate from plants species belonging to the genus ARABIDOPSIS. The most intensely studied species of Arabidopsis, Arabidopsis thaliana, is commonly used in laboratory experiments.

A plant genus of the family BRASSICACEAE that contains ARABIDOPSIS PROTEINS and MADS DOMAIN PROTEINS. The species A. thaliana is used for experiments in classical plant genetics as well as molecular genetic studies in plant physiology, biochemistry, and development.

Locations, on the GENOME, of GENES or other genetic elements that encode or control the expression of a quantitative trait (QUANTITATIVE TRAIT, HERITABLE).

A plant homeotic protein involved in the development of stamens and carpels of Arabidopsis thaliana. It is a DNA-binding protein that contains the MADS-box domain. It is one of the four founder proteins that structurally define the superfamily of MADS DOMAIN PROTEINS.

A characteristic showing quantitative inheritance such as SKIN PIGMENTATION in humans. (From A Dictionary of Genetics, 4th ed)

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